/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 09:07:50,347 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 09:07:50,350 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 09:07:50,403 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 09:07:50,404 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 09:07:50,409 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 09:07:50,413 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 09:07:50,423 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 09:07:50,427 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 09:07:50,435 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 09:07:50,437 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 09:07:50,438 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 09:07:50,439 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 09:07:50,443 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 09:07:50,445 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 09:07:50,447 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 09:07:50,449 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 09:07:50,465 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 09:07:50,469 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 09:07:50,471 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 09:07:50,473 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 09:07:50,475 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 09:07:50,477 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 09:07:50,480 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 09:07:50,493 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 09:07:50,507 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 09:07:50,508 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 09:07:50,509 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 09:07:50,515 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 09:07:50,570 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 09:07:50,570 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 09:07:50,575 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 09:07:50,576 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 09:07:50,576 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 09:07:50,577 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 09:07:50,577 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 09:07:50,577 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 09:07:50,577 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 09:07:50,578 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 09:07:50,579 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 09:07:50,579 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 09:07:50,579 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 09:07:50,579 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 09:07:50,580 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 09:07:50,580 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 09:07:50,580 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 09:07:50,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 09:07:50,581 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 09:07:50,581 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 09:07:50,581 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 09:07:50,581 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 09:07:50,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 09:07:50,582 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 09:07:50,582 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 09:07:50,582 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 09:07:51,030 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 09:07:51,068 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 09:07:51,072 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 09:07:51,073 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 09:07:51,074 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 09:07:51,075 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-12-22 09:07:51,172 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25ce4d687/a8b8a12865cb4d108c7c29f78e0f2f5c/FLAG77070dcc2 [2020-12-22 09:07:52,125 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 09:07:52,125 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-12-22 09:07:52,161 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25ce4d687/a8b8a12865cb4d108c7c29f78e0f2f5c/FLAG77070dcc2 [2020-12-22 09:07:52,675 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25ce4d687/a8b8a12865cb4d108c7c29f78e0f2f5c [2020-12-22 09:07:52,678 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 09:07:52,681 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 09:07:52,684 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 09:07:52,685 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 09:07:52,693 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 09:07:52,695 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:07:52" (1/1) ... [2020-12-22 09:07:52,697 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cb8492b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:07:52, skipping insertion in model container [2020-12-22 09:07:52,698 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:07:52" (1/1) ... [2020-12-22 09:07:52,706 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 09:07:52,852 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 09:07:53,945 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c[34821,34834] [2020-12-22 09:07:54,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:07:54,358 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 09:07:54,697 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c[34821,34834] [2020-12-22 09:07:54,860 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:07:54,886 INFO L208 MainTranslator]: Completed translation [2020-12-22 09:07:54,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:07:54 WrapperNode [2020-12-22 09:07:54,887 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 09:07:54,888 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 09:07:54,889 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 09:07:54,889 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 09:07:54,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:07:54" (1/1) ... [2020-12-22 09:07:54,929 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:07:54" (1/1) ... [2020-12-22 09:07:55,039 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 09:07:55,040 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 09:07:55,040 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 09:07:55,040 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 09:07:55,051 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:07:54" (1/1) ... [2020-12-22 09:07:55,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:07:54" (1/1) ... [2020-12-22 09:07:55,060 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:07:54" (1/1) ... [2020-12-22 09:07:55,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:07:54" (1/1) ... [2020-12-22 09:07:55,092 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:07:54" (1/1) ... [2020-12-22 09:07:55,121 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:07:54" (1/1) ... [2020-12-22 09:07:55,132 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:07:54" (1/1) ... [2020-12-22 09:07:55,163 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 09:07:55,167 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 09:07:55,168 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 09:07:55,168 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 09:07:55,171 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:07:54" (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 09:07:55,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 09:07:55,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 09:07:55,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 09:07:55,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 09:07:58,526 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 09:07:58,526 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 09:07:58,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:07:58 BoogieIcfgContainer [2020-12-22 09:07:58,532 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 09:07:58,536 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 09:07:58,537 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 09:07:58,541 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 09:07:58,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 09:07:52" (1/3) ... [2020-12-22 09:07:58,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68d33e0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:07:58, skipping insertion in model container [2020-12-22 09:07:58,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:07:54" (2/3) ... [2020-12-22 09:07:58,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68d33e0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:07:58, skipping insertion in model container [2020-12-22 09:07:58,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:07:58" (3/3) ... [2020-12-22 09:07:58,546 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-12-22 09:07:58,554 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 09:07:58,561 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 09:07:58,582 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 09:07:58,633 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 09:07:58,633 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 09:07:58,633 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 09:07:58,633 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 09:07:58,633 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 09:07:58,634 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 09:07:58,634 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 09:07:58,634 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 09:07:58,679 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states. [2020-12-22 09:07:58,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-12-22 09:07:58,723 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:07:58,725 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] [2020-12-22 09:07:58,726 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:07:58,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:07:58,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1016279858, now seen corresponding path program 1 times [2020-12-22 09:07:58,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:07:58,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749714765] [2020-12-22 09:07:58,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:07:59,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:08:00,023 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 09:08:00,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749714765] [2020-12-22 09:08:00,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:08:00,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:08:00,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054372006] [2020-12-22 09:08:00,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:08:00,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:08:00,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:08:00,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:08:00,062 INFO L87 Difference]: Start difference. First operand 790 states. Second operand 3 states. [2020-12-22 09:08:00,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:08:00,434 INFO L93 Difference]: Finished difference Result 1423 states and 2503 transitions. [2020-12-22 09:08:00,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:08:00,437 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 320 [2020-12-22 09:08:00,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:08:00,469 INFO L225 Difference]: With dead ends: 1423 [2020-12-22 09:08:00,470 INFO L226 Difference]: Without dead ends: 1253 [2020-12-22 09:08:00,476 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 09:08:00,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1253 states. [2020-12-22 09:08:00,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1253 to 1251. [2020-12-22 09:08:00,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1251 states. [2020-12-22 09:08:00,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1251 states to 1251 states and 1956 transitions. [2020-12-22 09:08:00,625 INFO L78 Accepts]: Start accepts. Automaton has 1251 states and 1956 transitions. Word has length 320 [2020-12-22 09:08:00,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:08:00,627 INFO L481 AbstractCegarLoop]: Abstraction has 1251 states and 1956 transitions. [2020-12-22 09:08:00,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:08:00,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1251 states and 1956 transitions. [2020-12-22 09:08:00,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-12-22 09:08:00,640 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:08:00,640 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] [2020-12-22 09:08:00,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 09:08:00,641 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:08:00,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:08:00,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1186607043, now seen corresponding path program 1 times [2020-12-22 09:08:00,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:08:00,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769165514] [2020-12-22 09:08:00,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:08:01,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:08:01,619 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 09:08:01,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769165514] [2020-12-22 09:08:01,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:08:01,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:08:01,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223578568] [2020-12-22 09:08:01,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:08:01,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:08:01,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:08:01,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:08:01,626 INFO L87 Difference]: Start difference. First operand 1251 states and 1956 transitions. Second operand 4 states. [2020-12-22 09:08:01,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:08:01,995 INFO L93 Difference]: Finished difference Result 3691 states and 5763 transitions. [2020-12-22 09:08:01,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:08:01,996 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 320 [2020-12-22 09:08:01,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:08:02,017 INFO L225 Difference]: With dead ends: 3691 [2020-12-22 09:08:02,018 INFO L226 Difference]: Without dead ends: 2451 [2020-12-22 09:08:02,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:08:02,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2451 states. [2020-12-22 09:08:02,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2451 to 2449. [2020-12-22 09:08:02,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2449 states. [2020-12-22 09:08:02,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2449 states to 2449 states and 3805 transitions. [2020-12-22 09:08:02,211 INFO L78 Accepts]: Start accepts. Automaton has 2449 states and 3805 transitions. Word has length 320 [2020-12-22 09:08:02,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:08:02,212 INFO L481 AbstractCegarLoop]: Abstraction has 2449 states and 3805 transitions. [2020-12-22 09:08:02,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:08:02,213 INFO L276 IsEmpty]: Start isEmpty. Operand 2449 states and 3805 transitions. [2020-12-22 09:08:02,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-12-22 09:08:02,223 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:08:02,224 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:08:02,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 09:08:02,224 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:08:02,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:08:02,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1005675603, now seen corresponding path program 1 times [2020-12-22 09:08:02,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:08:02,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912214197] [2020-12-22 09:08:02,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:08:02,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:08:02,643 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 09:08:02,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912214197] [2020-12-22 09:08:02,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:08:02,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:08:02,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084528297] [2020-12-22 09:08:02,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:08:02,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:08:02,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:08:02,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:08:02,652 INFO L87 Difference]: Start difference. First operand 2449 states and 3805 transitions. Second operand 3 states. [2020-12-22 09:08:02,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:08:02,977 INFO L93 Difference]: Finished difference Result 7128 states and 11035 transitions. [2020-12-22 09:08:02,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:08:02,977 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 322 [2020-12-22 09:08:02,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:08:03,003 INFO L225 Difference]: With dead ends: 7128 [2020-12-22 09:08:03,003 INFO L226 Difference]: Without dead ends: 4804 [2020-12-22 09:08:03,009 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 09:08:03,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4804 states. [2020-12-22 09:08:03,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4804 to 4802. [2020-12-22 09:08:03,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4802 states. [2020-12-22 09:08:03,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4802 states to 4802 states and 7419 transitions. [2020-12-22 09:08:03,282 INFO L78 Accepts]: Start accepts. Automaton has 4802 states and 7419 transitions. Word has length 322 [2020-12-22 09:08:03,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:08:03,282 INFO L481 AbstractCegarLoop]: Abstraction has 4802 states and 7419 transitions. [2020-12-22 09:08:03,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:08:03,283 INFO L276 IsEmpty]: Start isEmpty. Operand 4802 states and 7419 transitions. [2020-12-22 09:08:03,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-12-22 09:08:03,298 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:08:03,299 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:08:03,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 09:08:03,299 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:08:03,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:08:03,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1227155250, now seen corresponding path program 1 times [2020-12-22 09:08:03,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:08:03,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031570938] [2020-12-22 09:08:03,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:08:03,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:08:03,486 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 09:08:03,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031570938] [2020-12-22 09:08:03,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:08:03,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:08:03,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673623602] [2020-12-22 09:08:03,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:08:03,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:08:03,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:08:03,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:08:03,491 INFO L87 Difference]: Start difference. First operand 4802 states and 7419 transitions. Second operand 3 states. [2020-12-22 09:08:03,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:08:03,986 INFO L93 Difference]: Finished difference Result 14339 states and 22141 transitions. [2020-12-22 09:08:03,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:08:03,987 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 322 [2020-12-22 09:08:03,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:08:04,035 INFO L225 Difference]: With dead ends: 14339 [2020-12-22 09:08:04,035 INFO L226 Difference]: Without dead ends: 9575 [2020-12-22 09:08:04,045 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 09:08:04,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9575 states. [2020-12-22 09:08:04,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9575 to 4821. [2020-12-22 09:08:04,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4821 states. [2020-12-22 09:08:04,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4821 states to 4821 states and 7447 transitions. [2020-12-22 09:08:04,442 INFO L78 Accepts]: Start accepts. Automaton has 4821 states and 7447 transitions. Word has length 322 [2020-12-22 09:08:04,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:08:04,442 INFO L481 AbstractCegarLoop]: Abstraction has 4821 states and 7447 transitions. [2020-12-22 09:08:04,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:08:04,442 INFO L276 IsEmpty]: Start isEmpty. Operand 4821 states and 7447 transitions. [2020-12-22 09:08:04,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-12-22 09:08:04,457 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:08:04,457 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] [2020-12-22 09:08:04,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 09:08:04,458 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:08:04,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:08:04,458 INFO L82 PathProgramCache]: Analyzing trace with hash 706446803, now seen corresponding path program 1 times [2020-12-22 09:08:04,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:08:04,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765922926] [2020-12-22 09:08:04,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:08:04,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:08:04,673 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 09:08:04,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765922926] [2020-12-22 09:08:04,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:08:04,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:08:04,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095065998] [2020-12-22 09:08:04,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:08:04,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:08:04,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:08:04,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:08:04,678 INFO L87 Difference]: Start difference. First operand 4821 states and 7447 transitions. Second operand 3 states. [2020-12-22 09:08:05,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:08:05,258 INFO L93 Difference]: Finished difference Result 14358 states and 22162 transitions. [2020-12-22 09:08:05,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:08:05,259 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 323 [2020-12-22 09:08:05,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:08:05,325 INFO L225 Difference]: With dead ends: 14358 [2020-12-22 09:08:05,325 INFO L226 Difference]: Without dead ends: 9593 [2020-12-22 09:08:05,333 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 09:08:05,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9593 states. [2020-12-22 09:08:05,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9593 to 4839. [2020-12-22 09:08:05,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4839 states. [2020-12-22 09:08:05,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4839 states to 4839 states and 7468 transitions. [2020-12-22 09:08:05,729 INFO L78 Accepts]: Start accepts. Automaton has 4839 states and 7468 transitions. Word has length 323 [2020-12-22 09:08:05,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:08:05,729 INFO L481 AbstractCegarLoop]: Abstraction has 4839 states and 7468 transitions. [2020-12-22 09:08:05,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:08:05,729 INFO L276 IsEmpty]: Start isEmpty. Operand 4839 states and 7468 transitions. [2020-12-22 09:08:05,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-12-22 09:08:05,744 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:08:05,745 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:08:05,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 09:08:05,745 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:08:05,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:08:05,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1589061576, now seen corresponding path program 1 times [2020-12-22 09:08:05,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:08:05,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208946596] [2020-12-22 09:08:05,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:08:05,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:08:06,106 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 09:08:06,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208946596] [2020-12-22 09:08:06,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:08:06,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:08:06,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793249205] [2020-12-22 09:08:06,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:08:06,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:08:06,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:08:06,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:08:06,109 INFO L87 Difference]: Start difference. First operand 4839 states and 7468 transitions. Second operand 3 states. [2020-12-22 09:08:06,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:08:06,827 INFO L93 Difference]: Finished difference Result 13994 states and 21517 transitions. [2020-12-22 09:08:06,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:08:06,828 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 324 [2020-12-22 09:08:06,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:08:06,853 INFO L225 Difference]: With dead ends: 13994 [2020-12-22 09:08:06,853 INFO L226 Difference]: Without dead ends: 9396 [2020-12-22 09:08:06,863 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 09:08:06,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9396 states. [2020-12-22 09:08:07,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9396 to 9394. [2020-12-22 09:08:07,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9394 states. [2020-12-22 09:08:07,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9394 states to 9394 states and 14396 transitions. [2020-12-22 09:08:07,548 INFO L78 Accepts]: Start accepts. Automaton has 9394 states and 14396 transitions. Word has length 324 [2020-12-22 09:08:07,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:08:07,548 INFO L481 AbstractCegarLoop]: Abstraction has 9394 states and 14396 transitions. [2020-12-22 09:08:07,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:08:07,548 INFO L276 IsEmpty]: Start isEmpty. Operand 9394 states and 14396 transitions. [2020-12-22 09:08:07,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-12-22 09:08:07,574 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:08:07,574 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:08:07,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 09:08:07,575 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:08:07,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:08:07,575 INFO L82 PathProgramCache]: Analyzing trace with hash -899885403, now seen corresponding path program 1 times [2020-12-22 09:08:07,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:08:07,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072031405] [2020-12-22 09:08:07,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:08:07,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:08:08,299 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 09:08:08,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072031405] [2020-12-22 09:08:08,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:08:08,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:08:08,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429692328] [2020-12-22 09:08:08,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:08:08,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:08:08,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:08:08,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:08:08,304 INFO L87 Difference]: Start difference. First operand 9394 states and 14396 transitions. Second operand 5 states. [2020-12-22 09:08:09,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:08:09,528 INFO L93 Difference]: Finished difference Result 27524 states and 42093 transitions. [2020-12-22 09:08:09,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:08:09,529 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 324 [2020-12-22 09:08:09,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:08:09,577 INFO L225 Difference]: With dead ends: 27524 [2020-12-22 09:08:09,577 INFO L226 Difference]: Without dead ends: 18185 [2020-12-22 09:08:09,598 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:08:09,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18185 states. [2020-12-22 09:08:10,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18185 to 18183. [2020-12-22 09:08:10,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18183 states. [2020-12-22 09:08:10,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18183 states to 18183 states and 27633 transitions. [2020-12-22 09:08:10,931 INFO L78 Accepts]: Start accepts. Automaton has 18183 states and 27633 transitions. Word has length 324 [2020-12-22 09:08:10,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:08:10,931 INFO L481 AbstractCegarLoop]: Abstraction has 18183 states and 27633 transitions. [2020-12-22 09:08:10,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:08:10,932 INFO L276 IsEmpty]: Start isEmpty. Operand 18183 states and 27633 transitions. [2020-12-22 09:08:10,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-12-22 09:08:10,974 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:08:10,974 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:08:10,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 09:08:10,975 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:08:10,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:08:10,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1502929468, now seen corresponding path program 1 times [2020-12-22 09:08:10,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:08:10,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600696885] [2020-12-22 09:08:10,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:08:11,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:08:11,647 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 09:08:11,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600696885] [2020-12-22 09:08:11,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:08:11,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:08:11,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572013615] [2020-12-22 09:08:11,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:08:11,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:08:11,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:08:11,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:08:11,658 INFO L87 Difference]: Start difference. First operand 18183 states and 27633 transitions. Second operand 5 states. [2020-12-22 09:08:13,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:08:13,653 INFO L93 Difference]: Finished difference Result 53470 states and 81104 transitions. [2020-12-22 09:08:13,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:08:13,654 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 326 [2020-12-22 09:08:13,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:08:13,743 INFO L225 Difference]: With dead ends: 53470 [2020-12-22 09:08:13,744 INFO L226 Difference]: Without dead ends: 35404 [2020-12-22 09:08:13,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:08:13,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35404 states. [2020-12-22 09:08:15,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35404 to 35402. [2020-12-22 09:08:15,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35402 states. [2020-12-22 09:08:16,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35402 states to 35402 states and 53372 transitions. [2020-12-22 09:08:16,040 INFO L78 Accepts]: Start accepts. Automaton has 35402 states and 53372 transitions. Word has length 326 [2020-12-22 09:08:16,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:08:16,041 INFO L481 AbstractCegarLoop]: Abstraction has 35402 states and 53372 transitions. [2020-12-22 09:08:16,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:08:16,041 INFO L276 IsEmpty]: Start isEmpty. Operand 35402 states and 53372 transitions. [2020-12-22 09:08:16,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-12-22 09:08:16,115 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:08:16,116 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:08:16,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 09:08:16,116 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:08:16,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:08:16,117 INFO L82 PathProgramCache]: Analyzing trace with hash -854896249, now seen corresponding path program 1 times [2020-12-22 09:08:16,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:08:16,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295816673] [2020-12-22 09:08:16,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:08:16,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:08:16,981 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 09:08:16,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295816673] [2020-12-22 09:08:16,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:08:16,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:08:16,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197224194] [2020-12-22 09:08:16,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:08:16,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:08:16,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:08:16,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:08:16,990 INFO L87 Difference]: Start difference. First operand 35402 states and 53372 transitions. Second operand 4 states. [2020-12-22 09:08:20,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:08:20,340 INFO L93 Difference]: Finished difference Result 104364 states and 157065 transitions. [2020-12-22 09:08:20,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:08:20,341 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 326 [2020-12-22 09:08:20,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:08:20,488 INFO L225 Difference]: With dead ends: 104364 [2020-12-22 09:08:20,488 INFO L226 Difference]: Without dead ends: 69192 [2020-12-22 09:08:20,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:08:20,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69192 states. [2020-12-22 09:08:24,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69192 to 69190. [2020-12-22 09:08:24,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69190 states. [2020-12-22 09:08:24,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69190 states to 69190 states and 103480 transitions. [2020-12-22 09:08:24,432 INFO L78 Accepts]: Start accepts. Automaton has 69190 states and 103480 transitions. Word has length 326 [2020-12-22 09:08:24,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:08:24,433 INFO L481 AbstractCegarLoop]: Abstraction has 69190 states and 103480 transitions. [2020-12-22 09:08:24,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:08:24,433 INFO L276 IsEmpty]: Start isEmpty. Operand 69190 states and 103480 transitions. [2020-12-22 09:08:24,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-12-22 09:08:24,502 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:08:24,502 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:08:24,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 09:08:24,503 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:08:24,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:08:24,503 INFO L82 PathProgramCache]: Analyzing trace with hash -585132120, now seen corresponding path program 1 times [2020-12-22 09:08:24,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:08:24,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377682445] [2020-12-22 09:08:24,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:08:24,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:08:24,958 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 09:08:24,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377682445] [2020-12-22 09:08:24,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:08:24,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:08:24,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604678016] [2020-12-22 09:08:24,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:08:24,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:08:24,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:08:24,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:08:24,960 INFO L87 Difference]: Start difference. First operand 69190 states and 103480 transitions. Second operand 3 states. [2020-12-22 09:08:30,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:08:30,589 INFO L93 Difference]: Finished difference Result 203290 states and 303280 transitions. [2020-12-22 09:08:30,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:08:30,591 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 328 [2020-12-22 09:08:30,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:08:30,989 INFO L225 Difference]: With dead ends: 203290 [2020-12-22 09:08:30,990 INFO L226 Difference]: Without dead ends: 135480 [2020-12-22 09:08:31,116 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 09:08:31,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135480 states. [2020-12-22 09:08:37,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135480 to 135478. [2020-12-22 09:08:37,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135478 states. [2020-12-22 09:08:38,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135478 states to 135478 states and 201078 transitions. [2020-12-22 09:08:38,068 INFO L78 Accepts]: Start accepts. Automaton has 135478 states and 201078 transitions. Word has length 328 [2020-12-22 09:08:38,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:08:38,068 INFO L481 AbstractCegarLoop]: Abstraction has 135478 states and 201078 transitions. [2020-12-22 09:08:38,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:08:38,068 INFO L276 IsEmpty]: Start isEmpty. Operand 135478 states and 201078 transitions. [2020-12-22 09:08:38,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-12-22 09:08:38,495 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:08:38,495 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:08:38,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 09:08:38,495 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:08:38,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:08:38,496 INFO L82 PathProgramCache]: Analyzing trace with hash -710792467, now seen corresponding path program 1 times [2020-12-22 09:08:38,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:08:38,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356301609] [2020-12-22 09:08:38,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:08:38,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:08:38,701 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 09:08:38,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356301609] [2020-12-22 09:08:38,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:08:38,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:08:38,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900852801] [2020-12-22 09:08:38,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:08:38,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:08:38,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:08:38,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:08:38,705 INFO L87 Difference]: Start difference. First operand 135478 states and 201078 transitions. Second operand 3 states. [2020-12-22 09:08:49,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:08:49,800 INFO L93 Difference]: Finished difference Result 405310 states and 601410 transitions. [2020-12-22 09:08:49,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:08:49,801 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 328 [2020-12-22 09:08:49,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:08:50,495 INFO L225 Difference]: With dead ends: 405310 [2020-12-22 09:08:50,495 INFO L226 Difference]: Without dead ends: 270494 [2020-12-22 09:08:50,747 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 09:08:50,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270494 states. [2020-12-22 09:08:58,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270494 to 135688. [2020-12-22 09:08:58,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135688 states. [2020-12-22 09:08:59,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135688 states to 135688 states and 201390 transitions. [2020-12-22 09:08:59,316 INFO L78 Accepts]: Start accepts. Automaton has 135688 states and 201390 transitions. Word has length 328 [2020-12-22 09:08:59,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:08:59,316 INFO L481 AbstractCegarLoop]: Abstraction has 135688 states and 201390 transitions. [2020-12-22 09:08:59,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:08:59,316 INFO L276 IsEmpty]: Start isEmpty. Operand 135688 states and 201390 transitions. [2020-12-22 09:08:59,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-12-22 09:08:59,439 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:08:59,439 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] [2020-12-22 09:08:59,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 09:08:59,440 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:08:59,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:08:59,440 INFO L82 PathProgramCache]: Analyzing trace with hash -772630862, now seen corresponding path program 1 times [2020-12-22 09:08:59,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:08:59,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714220453] [2020-12-22 09:08:59,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:08:59,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:08:59,589 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 09:08:59,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714220453] [2020-12-22 09:08:59,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:08:59,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:08:59,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293061791] [2020-12-22 09:08:59,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:08:59,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:08:59,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:08:59,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:08:59,591 INFO L87 Difference]: Start difference. First operand 135688 states and 201390 transitions. Second operand 3 states. [2020-12-22 09:09:11,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:09:11,995 INFO L93 Difference]: Finished difference Result 405498 states and 601616 transitions. [2020-12-22 09:09:11,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:09:11,996 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 329 [2020-12-22 09:09:11,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:09:12,460 INFO L225 Difference]: With dead ends: 405498 [2020-12-22 09:09:12,461 INFO L226 Difference]: Without dead ends: 270672 [2020-12-22 09:09:12,622 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 09:09:13,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270672 states. [2020-12-22 09:09:21,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270672 to 135918. [2020-12-22 09:09:21,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135918 states. [2020-12-22 09:09:22,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135918 states to 135918 states and 201654 transitions. [2020-12-22 09:09:22,217 INFO L78 Accepts]: Start accepts. Automaton has 135918 states and 201654 transitions. Word has length 329 [2020-12-22 09:09:22,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:09:22,218 INFO L481 AbstractCegarLoop]: Abstraction has 135918 states and 201654 transitions. [2020-12-22 09:09:22,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:09:22,218 INFO L276 IsEmpty]: Start isEmpty. Operand 135918 states and 201654 transitions. [2020-12-22 09:09:22,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-12-22 09:09:22,594 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:09:22,594 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:09:22,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 09:09:22,594 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:09:22,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:09:22,595 INFO L82 PathProgramCache]: Analyzing trace with hash 2027125024, now seen corresponding path program 1 times [2020-12-22 09:09:22,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:09:22,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860771529] [2020-12-22 09:09:22,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:09:22,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:09:23,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:09:23,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860771529] [2020-12-22 09:09:23,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:09:23,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:09:23,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999442719] [2020-12-22 09:09:23,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:09:23,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:09:23,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:09:23,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:09:23,156 INFO L87 Difference]: Start difference. First operand 135918 states and 201654 transitions. Second operand 5 states. [2020-12-22 09:09:37,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:09:37,508 INFO L93 Difference]: Finished difference Result 399549 states and 591511 transitions. [2020-12-22 09:09:37,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:09:37,509 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 330 [2020-12-22 09:09:37,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:09:38,056 INFO L225 Difference]: With dead ends: 399549 [2020-12-22 09:09:38,056 INFO L226 Difference]: Without dead ends: 264212 [2020-12-22 09:09:38,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:09:38,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264212 states. [2020-12-22 09:09:54,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264212 to 264210. [2020-12-22 09:09:54,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264210 states. [2020-12-22 09:09:54,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264210 states to 264210 states and 388508 transitions. [2020-12-22 09:09:54,928 INFO L78 Accepts]: Start accepts. Automaton has 264210 states and 388508 transitions. Word has length 330 [2020-12-22 09:09:54,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:09:54,929 INFO L481 AbstractCegarLoop]: Abstraction has 264210 states and 388508 transitions. [2020-12-22 09:09:54,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:09:54,929 INFO L276 IsEmpty]: Start isEmpty. Operand 264210 states and 388508 transitions. [2020-12-22 09:09:55,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-12-22 09:09:55,185 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:09:55,186 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:09:55,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 09:09:55,186 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:09:55,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:09:55,186 INFO L82 PathProgramCache]: Analyzing trace with hash 2131703408, now seen corresponding path program 1 times [2020-12-22 09:09:55,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:09:55,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749937400] [2020-12-22 09:09:55,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:09:55,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:09:56,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:09:56,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749937400] [2020-12-22 09:09:56,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:09:56,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:09:56,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713242809] [2020-12-22 09:09:56,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:09:56,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:09:56,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:09:56,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:09:56,060 INFO L87 Difference]: Start difference. First operand 264210 states and 388508 transitions. Second operand 4 states. [2020-12-22 09:10:13,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:10:13,836 INFO L93 Difference]: Finished difference Result 548615 states and 806570 transitions. [2020-12-22 09:10:13,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:10:13,837 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 332 [2020-12-22 09:10:13,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:10:14,331 INFO L225 Difference]: With dead ends: 548615 [2020-12-22 09:10:14,331 INFO L226 Difference]: Without dead ends: 286023 [2020-12-22 09:10:14,853 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:10:15,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286023 states. [2020-12-22 09:10:31,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286023 to 264445. [2020-12-22 09:10:31,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264445 states. [2020-12-22 09:10:32,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264445 states to 264445 states and 388694 transitions. [2020-12-22 09:10:32,644 INFO L78 Accepts]: Start accepts. Automaton has 264445 states and 388694 transitions. Word has length 332 [2020-12-22 09:10:32,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:10:32,645 INFO L481 AbstractCegarLoop]: Abstraction has 264445 states and 388694 transitions. [2020-12-22 09:10:32,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:10:32,645 INFO L276 IsEmpty]: Start isEmpty. Operand 264445 states and 388694 transitions. [2020-12-22 09:10:32,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-12-22 09:10:32,916 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:10:32,916 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:10:32,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 09:10:32,917 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:10:32,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:10:32,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1894625523, now seen corresponding path program 1 times [2020-12-22 09:10:32,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:10:32,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502501335] [2020-12-22 09:10:32,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:10:32,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:10:33,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:10:33,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502501335] [2020-12-22 09:10:33,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:10:33,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:10:33,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380546557] [2020-12-22 09:10:33,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:10:33,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:10:33,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:10:33,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:10:33,456 INFO L87 Difference]: Start difference. First operand 264445 states and 388694 transitions. Second operand 3 states. [2020-12-22 09:11:04,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:11:04,044 INFO L93 Difference]: Finished difference Result 786991 states and 1156103 transitions. [2020-12-22 09:11:04,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:11:04,044 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 334 [2020-12-22 09:11:04,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:11:05,264 INFO L225 Difference]: With dead ends: 786991 [2020-12-22 09:11:05,265 INFO L226 Difference]: Without dead ends: 525024 [2020-12-22 09:11:05,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:11:06,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525024 states. [2020-12-22 09:11:26,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525024 to 264918. [2020-12-22 09:11:26,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264918 states. [2020-12-22 09:11:27,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264918 states to 264918 states and 389275 transitions. [2020-12-22 09:11:27,823 INFO L78 Accepts]: Start accepts. Automaton has 264918 states and 389275 transitions. Word has length 334 [2020-12-22 09:11:27,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:11:27,823 INFO L481 AbstractCegarLoop]: Abstraction has 264918 states and 389275 transitions. [2020-12-22 09:11:27,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:11:27,823 INFO L276 IsEmpty]: Start isEmpty. Operand 264918 states and 389275 transitions. [2020-12-22 09:11:28,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-12-22 09:11:28,098 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:11:28,099 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:11:28,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 09:11:28,099 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:11:28,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:11:28,103 INFO L82 PathProgramCache]: Analyzing trace with hash 57572492, now seen corresponding path program 1 times [2020-12-22 09:11:28,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:11:28,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477820257] [2020-12-22 09:11:28,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:11:28,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:11:28,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:11:28,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477820257] [2020-12-22 09:11:28,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:11:28,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:11:28,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025479267] [2020-12-22 09:11:28,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:11:28,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:11:28,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:11:28,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:11:28,837 INFO L87 Difference]: Start difference. First operand 264918 states and 389275 transitions. Second operand 3 states.