/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_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:07:02,802 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:07:02,807 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:07:02,860 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:07:02,861 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:07:02,865 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:07:02,869 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:07:02,887 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:07:02,889 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:07:02,890 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:07:02,891 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:07:02,893 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:07:02,893 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:07:02,894 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:07:02,896 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:07:02,897 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:07:02,898 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:07:02,899 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:07:02,901 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:07:02,903 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:07:02,905 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:07:02,906 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:07:02,907 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:07:02,908 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:07:02,911 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 08:07:02,912 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 08:07:02,912 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 08:07:02,913 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 08:07:02,913 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 08:07:02,915 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 08:07:02,915 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 08:07:02,916 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 08:07:02,917 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 08:07:02,918 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 08:07:02,919 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 08:07:02,919 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 08:07:02,920 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 08:07:02,920 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 08:07:02,921 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:07:02,922 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:07:02,923 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:07:02,924 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:07:02,956 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:07:02,957 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:07:02,958 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:07:02,958 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:07:02,959 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:07:02,960 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:07:02,960 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:07:02,961 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:07:02,961 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:07:02,961 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:07:02,961 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:07:02,962 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:07:02,962 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:07:02,962 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:07:02,962 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:07:02,963 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:07:02,963 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:07:02,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:07:02,964 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:07:02,964 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:07:02,965 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:07:02,965 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:07:02,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:07:02,965 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:07:02,965 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:07:02,966 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:07:03,319 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:07:03,351 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:07:03,355 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:07:03,356 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:07:03,357 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:07:03,358 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-22 08:07:03,445 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d67b81441/bb323fb5ed73458fa90e750b8a97a26f/FLAG80affc2ca [2020-12-22 08:07:04,117 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:07:04,117 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-22 08:07:04,139 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d67b81441/bb323fb5ed73458fa90e750b8a97a26f/FLAG80affc2ca [2020-12-22 08:07:04,398 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d67b81441/bb323fb5ed73458fa90e750b8a97a26f [2020-12-22 08:07:04,402 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:07:04,407 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:07:04,410 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:07:04,410 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:07:04,414 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:07:04,415 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:07:04" (1/1) ... [2020-12-22 08:07:04,417 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66dcbf18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:07:04, skipping insertion in model container [2020-12-22 08:07:04,418 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:07:04" (1/1) ... [2020-12-22 08:07:04,429 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:07:04,520 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:07:04,968 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_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[12246,12259] [2020-12-22 08:07:05,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:07:05,093 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:07:05,182 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_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[12246,12259] [2020-12-22 08:07:05,218 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:07:05,245 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:07:05,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:07:05 WrapperNode [2020-12-22 08:07:05,246 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:07:05,247 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:07:05,247 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:07:05,247 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:07:05,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:07:05" (1/1) ... [2020-12-22 08:07:05,273 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:07:05" (1/1) ... [2020-12-22 08:07:05,397 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:07:05,398 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:07:05,398 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:07:05,398 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:07:05,413 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:07:05" (1/1) ... [2020-12-22 08:07:05,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:07:05" (1/1) ... [2020-12-22 08:07:05,422 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:07:05" (1/1) ... [2020-12-22 08:07:05,429 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:07:05" (1/1) ... [2020-12-22 08:07:05,463 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:07:05" (1/1) ... [2020-12-22 08:07:05,493 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:07:05" (1/1) ... [2020-12-22 08:07:05,503 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:07:05" (1/1) ... [2020-12-22 08:07:05,518 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:07:05,519 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:07:05,519 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:07:05,519 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:07:05,521 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:07:05" (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 08:07:05,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:07:05,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:07:05,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:07:05,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:07:07,080 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:07:07,081 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:07:07,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:07:07 BoogieIcfgContainer [2020-12-22 08:07:07,088 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:07:07,090 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:07:07,090 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:07:07,095 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:07:07,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:07:04" (1/3) ... [2020-12-22 08:07:07,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a4b1356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:07:07, skipping insertion in model container [2020-12-22 08:07:07,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:07:05" (2/3) ... [2020-12-22 08:07:07,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a4b1356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:07:07, skipping insertion in model container [2020-12-22 08:07:07,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:07:07" (3/3) ... [2020-12-22 08:07:07,104 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-22 08:07:07,111 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:07:07,117 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 08:07:07,132 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 08:07:07,160 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:07:07,160 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:07:07,161 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:07:07,161 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:07:07,161 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:07:07,161 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:07:07,161 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:07:07,161 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:07:07,184 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states. [2020-12-22 08:07:07,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-22 08:07:07,199 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:07:07,200 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] [2020-12-22 08:07:07,200 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:07:07,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:07:07,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1531985210, now seen corresponding path program 1 times [2020-12-22 08:07:07,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:07:07,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943219804] [2020-12-22 08:07:07,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:07:07,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:07:07,800 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 08:07:07,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943219804] [2020-12-22 08:07:07,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:07:07,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:07:07,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745109646] [2020-12-22 08:07:07,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:07:07,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:07:07,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:07:07,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:07:07,825 INFO L87 Difference]: Start difference. First operand 314 states. Second operand 3 states. [2020-12-22 08:07:07,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:07:07,975 INFO L93 Difference]: Finished difference Result 577 states and 997 transitions. [2020-12-22 08:07:07,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:07:07,979 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2020-12-22 08:07:07,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:07:08,004 INFO L225 Difference]: With dead ends: 577 [2020-12-22 08:07:08,004 INFO L226 Difference]: Without dead ends: 434 [2020-12-22 08:07:08,009 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 08:07:08,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-12-22 08:07:08,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 431. [2020-12-22 08:07:08,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2020-12-22 08:07:08,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 722 transitions. [2020-12-22 08:07:08,154 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 722 transitions. Word has length 98 [2020-12-22 08:07:08,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:07:08,155 INFO L481 AbstractCegarLoop]: Abstraction has 431 states and 722 transitions. [2020-12-22 08:07:08,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:07:08,155 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 722 transitions. [2020-12-22 08:07:08,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-12-22 08:07:08,169 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:07:08,169 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] [2020-12-22 08:07:08,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:07:08,170 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:07:08,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:07:08,173 INFO L82 PathProgramCache]: Analyzing trace with hash 900005057, now seen corresponding path program 1 times [2020-12-22 08:07:08,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:07:08,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979930075] [2020-12-22 08:07:08,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:07:08,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:07:08,417 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 08:07:08,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979930075] [2020-12-22 08:07:08,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:07:08,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:07:08,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680856444] [2020-12-22 08:07:08,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:07:08,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:07:08,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:07:08,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:07:08,421 INFO L87 Difference]: Start difference. First operand 431 states and 722 transitions. Second operand 3 states. [2020-12-22 08:07:08,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:07:08,488 INFO L93 Difference]: Finished difference Result 921 states and 1538 transitions. [2020-12-22 08:07:08,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:07:08,489 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 101 [2020-12-22 08:07:08,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:07:08,494 INFO L225 Difference]: With dead ends: 921 [2020-12-22 08:07:08,494 INFO L226 Difference]: Without dead ends: 667 [2020-12-22 08:07:08,497 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 08:07:08,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2020-12-22 08:07:08,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 663. [2020-12-22 08:07:08,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 663 states. [2020-12-22 08:07:08,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 1106 transitions. [2020-12-22 08:07:08,542 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 1106 transitions. Word has length 101 [2020-12-22 08:07:08,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:07:08,543 INFO L481 AbstractCegarLoop]: Abstraction has 663 states and 1106 transitions. [2020-12-22 08:07:08,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:07:08,543 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 1106 transitions. [2020-12-22 08:07:08,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-12-22 08:07:08,545 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:07:08,545 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] [2020-12-22 08:07:08,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:07:08,545 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:07:08,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:07:08,546 INFO L82 PathProgramCache]: Analyzing trace with hash -2056367170, now seen corresponding path program 1 times [2020-12-22 08:07:08,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:07:08,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754339191] [2020-12-22 08:07:08,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:07:08,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:07:08,767 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 08:07:08,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754339191] [2020-12-22 08:07:08,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:07:08,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:07:08,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605151283] [2020-12-22 08:07:08,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:07:08,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:07:08,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:07:08,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:07:08,777 INFO L87 Difference]: Start difference. First operand 663 states and 1106 transitions. Second operand 3 states. [2020-12-22 08:07:08,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:07:08,910 INFO L93 Difference]: Finished difference Result 1599 states and 2656 transitions. [2020-12-22 08:07:08,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:07:08,911 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 104 [2020-12-22 08:07:08,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:07:08,926 INFO L225 Difference]: With dead ends: 1599 [2020-12-22 08:07:08,926 INFO L226 Difference]: Without dead ends: 1113 [2020-12-22 08:07:08,928 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 08:07:08,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2020-12-22 08:07:09,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 1107. [2020-12-22 08:07:09,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1107 states. [2020-12-22 08:07:09,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 1834 transitions. [2020-12-22 08:07:09,053 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 1834 transitions. Word has length 104 [2020-12-22 08:07:09,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:07:09,054 INFO L481 AbstractCegarLoop]: Abstraction has 1107 states and 1834 transitions. [2020-12-22 08:07:09,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:07:09,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 1834 transitions. [2020-12-22 08:07:09,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-22 08:07:09,057 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:07:09,057 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] [2020-12-22 08:07:09,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:07:09,057 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:07:09,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:07:09,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1532440003, now seen corresponding path program 1 times [2020-12-22 08:07:09,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:07:09,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130493796] [2020-12-22 08:07:09,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:07:09,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:07:09,208 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 08:07:09,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130493796] [2020-12-22 08:07:09,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:07:09,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:07:09,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202802990] [2020-12-22 08:07:09,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:07:09,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:07:09,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:07:09,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:07:09,212 INFO L87 Difference]: Start difference. First operand 1107 states and 1834 transitions. Second operand 3 states. [2020-12-22 08:07:09,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:07:09,345 INFO L93 Difference]: Finished difference Result 2895 states and 4772 transitions. [2020-12-22 08:07:09,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:07:09,345 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-12-22 08:07:09,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:07:09,357 INFO L225 Difference]: With dead ends: 2895 [2020-12-22 08:07:09,358 INFO L226 Difference]: Without dead ends: 1965 [2020-12-22 08:07:09,360 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 08:07:09,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2020-12-22 08:07:09,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1955. [2020-12-22 08:07:09,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1955 states. [2020-12-22 08:07:09,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1955 states to 1955 states and 3210 transitions. [2020-12-22 08:07:09,483 INFO L78 Accepts]: Start accepts. Automaton has 1955 states and 3210 transitions. Word has length 107 [2020-12-22 08:07:09,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:07:09,484 INFO L481 AbstractCegarLoop]: Abstraction has 1955 states and 3210 transitions. [2020-12-22 08:07:09,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:07:09,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1955 states and 3210 transitions. [2020-12-22 08:07:09,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-12-22 08:07:09,486 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:07:09,487 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] [2020-12-22 08:07:09,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:07:09,487 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:07:09,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:07:09,488 INFO L82 PathProgramCache]: Analyzing trace with hash 911548994, now seen corresponding path program 1 times [2020-12-22 08:07:09,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:07:09,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386206742] [2020-12-22 08:07:09,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:07:09,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:07:09,697 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 08:07:09,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386206742] [2020-12-22 08:07:09,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:07:09,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:07:09,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981992942] [2020-12-22 08:07:09,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:07:09,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:07:09,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:07:09,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:07:09,700 INFO L87 Difference]: Start difference. First operand 1955 states and 3210 transitions. Second operand 6 states. [2020-12-22 08:07:10,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:07:10,444 INFO L93 Difference]: Finished difference Result 8359 states and 13800 transitions. [2020-12-22 08:07:10,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 08:07:10,445 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 110 [2020-12-22 08:07:10,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:07:10,485 INFO L225 Difference]: With dead ends: 8359 [2020-12-22 08:07:10,485 INFO L226 Difference]: Without dead ends: 6581 [2020-12-22 08:07:10,491 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:07:10,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6581 states. [2020-12-22 08:07:10,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6581 to 4679. [2020-12-22 08:07:10,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4679 states. [2020-12-22 08:07:10,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4679 states to 4679 states and 7700 transitions. [2020-12-22 08:07:10,924 INFO L78 Accepts]: Start accepts. Automaton has 4679 states and 7700 transitions. Word has length 110 [2020-12-22 08:07:10,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:07:10,924 INFO L481 AbstractCegarLoop]: Abstraction has 4679 states and 7700 transitions. [2020-12-22 08:07:10,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:07:10,925 INFO L276 IsEmpty]: Start isEmpty. Operand 4679 states and 7700 transitions. [2020-12-22 08:07:10,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 08:07:10,931 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:07:10,931 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] [2020-12-22 08:07:10,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:07:10,932 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:07:10,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:07:10,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1873814308, now seen corresponding path program 1 times [2020-12-22 08:07:10,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:07:10,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946800959] [2020-12-22 08:07:10,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:07:10,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:07:11,041 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 08:07:11,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946800959] [2020-12-22 08:07:11,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:07:11,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:07:11,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092172530] [2020-12-22 08:07:11,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:07:11,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:07:11,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:07:11,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:07:11,045 INFO L87 Difference]: Start difference. First operand 4679 states and 7700 transitions. Second operand 4 states. [2020-12-22 08:07:11,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:07:11,609 INFO L93 Difference]: Finished difference Result 11819 states and 19521 transitions. [2020-12-22 08:07:11,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:07:11,609 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 111 [2020-12-22 08:07:11,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:07:11,647 INFO L225 Difference]: With dead ends: 11819 [2020-12-22 08:07:11,647 INFO L226 Difference]: Without dead ends: 7317 [2020-12-22 08:07:11,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:07:11,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7317 states. [2020-12-22 08:07:12,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7317 to 6807. [2020-12-22 08:07:12,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6807 states. [2020-12-22 08:07:12,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6807 states to 6807 states and 11220 transitions. [2020-12-22 08:07:12,179 INFO L78 Accepts]: Start accepts. Automaton has 6807 states and 11220 transitions. Word has length 111 [2020-12-22 08:07:12,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:07:12,180 INFO L481 AbstractCegarLoop]: Abstraction has 6807 states and 11220 transitions. [2020-12-22 08:07:12,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:07:12,180 INFO L276 IsEmpty]: Start isEmpty. Operand 6807 states and 11220 transitions. [2020-12-22 08:07:12,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-12-22 08:07:12,185 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:07:12,186 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] [2020-12-22 08:07:12,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:07:12,186 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:07:12,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:07:12,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1978794569, now seen corresponding path program 1 times [2020-12-22 08:07:12,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:07:12,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189649619] [2020-12-22 08:07:12,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:07:12,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:07:12,295 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 08:07:12,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189649619] [2020-12-22 08:07:12,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:07:12,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:07:12,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347679868] [2020-12-22 08:07:12,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:07:12,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:07:12,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:07:12,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:07:12,298 INFO L87 Difference]: Start difference. First operand 6807 states and 11220 transitions. Second operand 4 states. [2020-12-22 08:07:13,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:07:13,190 INFO L93 Difference]: Finished difference Result 17830 states and 29440 transitions. [2020-12-22 08:07:13,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:07:13,191 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 112 [2020-12-22 08:07:13,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:07:13,239 INFO L225 Difference]: With dead ends: 17830 [2020-12-22 08:07:13,240 INFO L226 Difference]: Without dead ends: 11200 [2020-12-22 08:07:13,254 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:07:13,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11200 states. [2020-12-22 08:07:13,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11200 to 9759. [2020-12-22 08:07:13,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9759 states. [2020-12-22 08:07:13,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9759 states to 9759 states and 16071 transitions. [2020-12-22 08:07:13,926 INFO L78 Accepts]: Start accepts. Automaton has 9759 states and 16071 transitions. Word has length 112 [2020-12-22 08:07:13,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:07:13,926 INFO L481 AbstractCegarLoop]: Abstraction has 9759 states and 16071 transitions. [2020-12-22 08:07:13,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:07:13,926 INFO L276 IsEmpty]: Start isEmpty. Operand 9759 states and 16071 transitions. [2020-12-22 08:07:13,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-12-22 08:07:13,932 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:07:13,932 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:07:13,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:07:13,933 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:07:13,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:07:13,934 INFO L82 PathProgramCache]: Analyzing trace with hash -2111780172, now seen corresponding path program 1 times [2020-12-22 08:07:13,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:07:13,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833044045] [2020-12-22 08:07:13,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:07:13,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:07:14,078 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 08:07:14,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833044045] [2020-12-22 08:07:14,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:07:14,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:07:14,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949984795] [2020-12-22 08:07:14,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:07:14,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:07:14,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:07:14,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:07:14,082 INFO L87 Difference]: Start difference. First operand 9759 states and 16071 transitions. Second operand 3 states. [2020-12-22 08:07:15,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:07:15,038 INFO L93 Difference]: Finished difference Result 21909 states and 36152 transitions. [2020-12-22 08:07:15,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:07:15,039 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 113 [2020-12-22 08:07:15,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:07:15,084 INFO L225 Difference]: With dead ends: 21909 [2020-12-22 08:07:15,084 INFO L226 Difference]: Without dead ends: 15050 [2020-12-22 08:07:15,096 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 08:07:15,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15050 states. [2020-12-22 08:07:16,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15050 to 15048. [2020-12-22 08:07:16,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15048 states. [2020-12-22 08:07:16,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15048 states to 15048 states and 24737 transitions. [2020-12-22 08:07:16,100 INFO L78 Accepts]: Start accepts. Automaton has 15048 states and 24737 transitions. Word has length 113 [2020-12-22 08:07:16,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:07:16,101 INFO L481 AbstractCegarLoop]: Abstraction has 15048 states and 24737 transitions. [2020-12-22 08:07:16,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:07:16,101 INFO L276 IsEmpty]: Start isEmpty. Operand 15048 states and 24737 transitions. [2020-12-22 08:07:16,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-12-22 08:07:16,104 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:07:16,105 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] [2020-12-22 08:07:16,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:07:16,105 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:07:16,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:07:16,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1571535332, now seen corresponding path program 1 times [2020-12-22 08:07:16,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:07:16,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264667104] [2020-12-22 08:07:16,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:07:16,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:07:16,199 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 08:07:16,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264667104] [2020-12-22 08:07:16,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:07:16,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:07:16,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507599675] [2020-12-22 08:07:16,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:07:16,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:07:16,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:07:16,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:07:16,202 INFO L87 Difference]: Start difference. First operand 15048 states and 24737 transitions. Second operand 3 states. [2020-12-22 08:07:17,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:07:17,440 INFO L93 Difference]: Finished difference Result 29952 states and 49377 transitions. [2020-12-22 08:07:17,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:07:17,440 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 113 [2020-12-22 08:07:17,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:07:17,494 INFO L225 Difference]: With dead ends: 29952 [2020-12-22 08:07:17,494 INFO L226 Difference]: Without dead ends: 21442 [2020-12-22 08:07:17,514 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 08:07:17,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21442 states. [2020-12-22 08:07:18,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21442 to 21440. [2020-12-22 08:07:18,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21440 states. [2020-12-22 08:07:18,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21440 states to 21440 states and 35195 transitions. [2020-12-22 08:07:18,644 INFO L78 Accepts]: Start accepts. Automaton has 21440 states and 35195 transitions. Word has length 113 [2020-12-22 08:07:18,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:07:18,644 INFO L481 AbstractCegarLoop]: Abstraction has 21440 states and 35195 transitions. [2020-12-22 08:07:18,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:07:18,644 INFO L276 IsEmpty]: Start isEmpty. Operand 21440 states and 35195 transitions. [2020-12-22 08:07:18,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-12-22 08:07:18,646 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:07:18,647 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] [2020-12-22 08:07:18,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:07:18,647 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:07:18,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:07:18,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1155143491, now seen corresponding path program 1 times [2020-12-22 08:07:18,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:07:18,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698540430] [2020-12-22 08:07:18,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:07:18,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:07:18,742 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 08:07:18,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698540430] [2020-12-22 08:07:18,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:07:18,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:07:18,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791832449] [2020-12-22 08:07:18,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:07:18,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:07:18,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:07:18,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:07:18,746 INFO L87 Difference]: Start difference. First operand 21440 states and 35195 transitions. Second operand 4 states. [2020-12-22 08:07:20,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:07:20,861 INFO L93 Difference]: Finished difference Result 66912 states and 110094 transitions. [2020-12-22 08:07:20,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:07:20,862 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2020-12-22 08:07:20,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:07:20,978 INFO L225 Difference]: With dead ends: 66912 [2020-12-22 08:07:20,978 INFO L226 Difference]: Without dead ends: 45756 [2020-12-22 08:07:21,013 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:07:21,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45756 states. [2020-12-22 08:07:23,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45756 to 33533. [2020-12-22 08:07:23,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33533 states. [2020-12-22 08:07:23,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33533 states to 33533 states and 54960 transitions. [2020-12-22 08:07:23,218 INFO L78 Accepts]: Start accepts. Automaton has 33533 states and 54960 transitions. Word has length 113 [2020-12-22 08:07:23,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:07:23,218 INFO L481 AbstractCegarLoop]: Abstraction has 33533 states and 54960 transitions. [2020-12-22 08:07:23,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:07:23,218 INFO L276 IsEmpty]: Start isEmpty. Operand 33533 states and 54960 transitions. [2020-12-22 08:07:23,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-12-22 08:07:23,221 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:07:23,221 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] [2020-12-22 08:07:23,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:07:23,222 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:07:23,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:07:23,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1280489340, now seen corresponding path program 1 times [2020-12-22 08:07:23,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:07:23,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887716673] [2020-12-22 08:07:23,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:07:23,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:07:23,311 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 08:07:23,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887716673] [2020-12-22 08:07:23,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:07:23,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:07:23,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773245138] [2020-12-22 08:07:23,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:07:23,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:07:23,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:07:23,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:07:23,314 INFO L87 Difference]: Start difference. First operand 33533 states and 54960 transitions. Second operand 3 states. [2020-12-22 08:07:25,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:07:25,417 INFO L93 Difference]: Finished difference Result 67397 states and 110845 transitions. [2020-12-22 08:07:25,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:07:25,417 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 113 [2020-12-22 08:07:25,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:07:25,504 INFO L225 Difference]: With dead ends: 67397 [2020-12-22 08:07:25,504 INFO L226 Difference]: Without dead ends: 47769 [2020-12-22 08:07:25,544 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 08:07:25,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47769 states. [2020-12-22 08:07:28,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47769 to 47767. [2020-12-22 08:07:28,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47767 states. [2020-12-22 08:07:28,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47767 states to 47767 states and 78174 transitions. [2020-12-22 08:07:28,285 INFO L78 Accepts]: Start accepts. Automaton has 47767 states and 78174 transitions. Word has length 113 [2020-12-22 08:07:28,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:07:28,285 INFO L481 AbstractCegarLoop]: Abstraction has 47767 states and 78174 transitions. [2020-12-22 08:07:28,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:07:28,285 INFO L276 IsEmpty]: Start isEmpty. Operand 47767 states and 78174 transitions. [2020-12-22 08:07:28,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-12-22 08:07:28,287 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:07:28,287 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] [2020-12-22 08:07:28,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:07:28,288 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:07:28,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:07:28,288 INFO L82 PathProgramCache]: Analyzing trace with hash 760927820, now seen corresponding path program 1 times [2020-12-22 08:07:28,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:07:28,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303608706] [2020-12-22 08:07:28,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:07:28,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:07:28,351 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 08:07:28,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303608706] [2020-12-22 08:07:28,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:07:28,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:07:28,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786274787] [2020-12-22 08:07:28,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:07:28,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:07:28,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:07:28,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:07:28,354 INFO L87 Difference]: Start difference. First operand 47767 states and 78174 transitions. Second operand 3 states. [2020-12-22 08:07:31,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:07:31,659 INFO L93 Difference]: Finished difference Result 106286 states and 175351 transitions. [2020-12-22 08:07:31,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:07:31,660 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 113 [2020-12-22 08:07:31,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:07:31,787 INFO L225 Difference]: With dead ends: 106286 [2020-12-22 08:07:31,787 INFO L226 Difference]: Without dead ends: 71735 [2020-12-22 08:07:31,830 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 08:07:31,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71735 states. [2020-12-22 08:07:35,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71735 to 71733. [2020-12-22 08:07:35,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71733 states. [2020-12-22 08:07:35,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71733 states to 71733 states and 117552 transitions. [2020-12-22 08:07:35,589 INFO L78 Accepts]: Start accepts. Automaton has 71733 states and 117552 transitions. Word has length 113 [2020-12-22 08:07:35,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:07:35,589 INFO L481 AbstractCegarLoop]: Abstraction has 71733 states and 117552 transitions. [2020-12-22 08:07:35,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:07:35,589 INFO L276 IsEmpty]: Start isEmpty. Operand 71733 states and 117552 transitions. [2020-12-22 08:07:35,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-12-22 08:07:35,590 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:07:35,591 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] [2020-12-22 08:07:35,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:07:35,591 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:07:35,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:07:35,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1396321872, now seen corresponding path program 1 times [2020-12-22 08:07:35,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:07:35,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763540522] [2020-12-22 08:07:35,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:07:35,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:07:35,670 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 08:07:35,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763540522] [2020-12-22 08:07:35,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:07:35,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:07:35,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477882963] [2020-12-22 08:07:35,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:07:35,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:07:35,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:07:35,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:07:35,673 INFO L87 Difference]: Start difference. First operand 71733 states and 117552 transitions. Second operand 4 states. [2020-12-22 08:07:42,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:07:42,719 INFO L93 Difference]: Finished difference Result 221810 states and 364263 transitions. [2020-12-22 08:07:42,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:07:42,720 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 114 [2020-12-22 08:07:42,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:07:43,074 INFO L225 Difference]: With dead ends: 221810 [2020-12-22 08:07:43,074 INFO L226 Difference]: Without dead ends: 150309 [2020-12-22 08:07:43,148 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:07:43,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150309 states. [2020-12-22 08:07:49,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150309 to 110764. [2020-12-22 08:07:49,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110764 states. [2020-12-22 08:07:49,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110764 states to 110764 states and 181045 transitions. [2020-12-22 08:07:49,271 INFO L78 Accepts]: Start accepts. Automaton has 110764 states and 181045 transitions. Word has length 114 [2020-12-22 08:07:49,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:07:49,271 INFO L481 AbstractCegarLoop]: Abstraction has 110764 states and 181045 transitions. [2020-12-22 08:07:49,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:07:49,271 INFO L276 IsEmpty]: Start isEmpty. Operand 110764 states and 181045 transitions. [2020-12-22 08:07:49,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-22 08:07:49,272 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:07:49,272 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] [2020-12-22 08:07:49,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 08:07:49,273 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:07:49,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:07:49,273 INFO L82 PathProgramCache]: Analyzing trace with hash 318216513, now seen corresponding path program 1 times [2020-12-22 08:07:49,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:07:49,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205539615] [2020-12-22 08:07:49,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:07:49,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:07:49,762 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 08:07:49,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205539615] [2020-12-22 08:07:49,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:07:49,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:07:49,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952001508] [2020-12-22 08:07:49,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:07:49,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:07:49,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:07:49,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:07:49,764 INFO L87 Difference]: Start difference. First operand 110764 states and 181045 transitions. Second operand 6 states. [2020-12-22 08:07:59,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:07:59,224 INFO L93 Difference]: Finished difference Result 279042 states and 456451 transitions. [2020-12-22 08:07:59,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 08:07:59,224 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2020-12-22 08:07:59,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:07:59,634 INFO L225 Difference]: With dead ends: 279042 [2020-12-22 08:07:59,634 INFO L226 Difference]: Without dead ends: 168510 [2020-12-22 08:07:59,732 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:07:59,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168510 states. [2020-12-22 08:08:07,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168510 to 141784. [2020-12-22 08:08:07,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141784 states. [2020-12-22 08:08:08,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141784 states to 141784 states and 230800 transitions. [2020-12-22 08:08:08,203 INFO L78 Accepts]: Start accepts. Automaton has 141784 states and 230800 transitions. Word has length 116 [2020-12-22 08:08:08,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:08:08,203 INFO L481 AbstractCegarLoop]: Abstraction has 141784 states and 230800 transitions. [2020-12-22 08:08:08,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:08:08,203 INFO L276 IsEmpty]: Start isEmpty. Operand 141784 states and 230800 transitions. [2020-12-22 08:08:08,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-12-22 08:08:08,204 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:08:08,204 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] [2020-12-22 08:08:08,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 08:08:08,205 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:08:08,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:08:08,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1053071851, now seen corresponding path program 1 times [2020-12-22 08:08:08,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:08:08,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999852482] [2020-12-22 08:08:08,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:08:08,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:08:08,741 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 08:08:08,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999852482] [2020-12-22 08:08:08,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:08:08,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:08:08,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582775658] [2020-12-22 08:08:08,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:08:08,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:08:08,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:08:08,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:08:08,744 INFO L87 Difference]: Start difference. First operand 141784 states and 230800 transitions. Second operand 6 states. [2020-12-22 08:08:29,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:08:29,059 INFO L93 Difference]: Finished difference Result 463488 states and 755829 transitions. [2020-12-22 08:08:29,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 08:08:29,062 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2020-12-22 08:08:29,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:08:29,766 INFO L225 Difference]: With dead ends: 463488 [2020-12-22 08:08:29,766 INFO L226 Difference]: Without dead ends: 321936 [2020-12-22 08:08:29,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:08:30,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321936 states. [2020-12-22 08:08:44,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321936 to 195460. [2020-12-22 08:08:44,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195460 states. [2020-12-22 08:08:45,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195460 states to 195460 states and 317351 transitions. [2020-12-22 08:08:45,665 INFO L78 Accepts]: Start accepts. Automaton has 195460 states and 317351 transitions. Word has length 119 [2020-12-22 08:08:45,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:08:45,666 INFO L481 AbstractCegarLoop]: Abstraction has 195460 states and 317351 transitions. [2020-12-22 08:08:45,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:08:45,666 INFO L276 IsEmpty]: Start isEmpty. Operand 195460 states and 317351 transitions. [2020-12-22 08:08:45,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-12-22 08:08:45,667 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:08:45,667 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] [2020-12-22 08:08:45,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 08:08:45,668 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:08:45,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:08:45,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1712601854, now seen corresponding path program 1 times [2020-12-22 08:08:45,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:08:45,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689304637] [2020-12-22 08:08:45,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:08:45,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:08:45,869 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 08:08:45,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689304637] [2020-12-22 08:08:45,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:08:45,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:08:45,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982113317] [2020-12-22 08:08:45,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:08:45,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:08:45,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:08:45,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:08:45,873 INFO L87 Difference]: Start difference. First operand 195460 states and 317351 transitions. Second operand 5 states. [2020-12-22 08:09:14,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:09:14,096 INFO L93 Difference]: Finished difference Result 384884 states and 622423 transitions. [2020-12-22 08:09:14,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 08:09:14,096 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-12-22 08:09:14,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:09:14,833 INFO L225 Difference]: With dead ends: 384884 [2020-12-22 08:09:14,833 INFO L226 Difference]: Without dead ends: 384882 [2020-12-22 08:09:15,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:09:15,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384882 states. [2020-12-22 08:09:33,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384882 to 200176. [2020-12-22 08:09:33,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200176 states. [2020-12-22 08:09:33,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200176 states to 200176 states and 322040 transitions. [2020-12-22 08:09:33,797 INFO L78 Accepts]: Start accepts. Automaton has 200176 states and 322040 transitions. Word has length 120 [2020-12-22 08:09:33,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:09:33,797 INFO L481 AbstractCegarLoop]: Abstraction has 200176 states and 322040 transitions. [2020-12-22 08:09:33,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:09:33,798 INFO L276 IsEmpty]: Start isEmpty. Operand 200176 states and 322040 transitions. [2020-12-22 08:09:33,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-12-22 08:09:33,808 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:09:33,810 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:09:33,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 08:09:33,810 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:09:33,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:09:33,811 INFO L82 PathProgramCache]: Analyzing trace with hash -991920616, now seen corresponding path program 1 times [2020-12-22 08:09:33,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:09:33,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537660506] [2020-12-22 08:09:33,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:09:33,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:09:33,966 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 08:09:33,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537660506] [2020-12-22 08:09:33,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:09:33,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:09:33,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721155064] [2020-12-22 08:09:33,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:09:33,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:09:33,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:09:33,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:09:33,970 INFO L87 Difference]: Start difference. First operand 200176 states and 322040 transitions. Second operand 6 states.