/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_5-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 05:10:57,817 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 05:10:57,820 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 05:10:57,844 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 05:10:57,845 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 05:10:57,846 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 05:10:57,847 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 05:10:57,849 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 05:10:57,851 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 05:10:57,851 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 05:10:57,852 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 05:10:57,853 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 05:10:57,854 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 05:10:57,855 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 05:10:57,856 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 05:10:57,857 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 05:10:57,858 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 05:10:57,859 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 05:10:57,860 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 05:10:57,863 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 05:10:57,864 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 05:10:57,866 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 05:10:57,867 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 05:10:57,868 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 05:10:57,871 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 05:10:57,871 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 05:10:57,871 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 05:10:57,872 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 05:10:57,873 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 05:10:57,874 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 05:10:57,874 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 05:10:57,875 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 05:10:57,876 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 05:10:57,877 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 05:10:57,878 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 05:10:57,878 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 05:10:57,879 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 05:10:57,879 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 05:10:57,879 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 05:10:57,880 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 05:10:57,883 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 05:10:57,885 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 05:10:57,931 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 05:10:57,931 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 05:10:57,933 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 05:10:57,933 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 05:10:57,933 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 05:10:57,933 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 05:10:57,933 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 05:10:57,934 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 05:10:57,934 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 05:10:57,935 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 05:10:57,936 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 05:10:57,936 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 05:10:57,936 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 05:10:57,936 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 05:10:57,937 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 05:10:57,937 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 05:10:57,937 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 05:10:57,937 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 05:10:57,937 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 05:10:57,938 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 05:10:57,938 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 05:10:57,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 05:10:57,938 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 05:10:57,939 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 05:10:57,939 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 05:10:57,941 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 05:10:57,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 05:10:57,941 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 05:10:57,941 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 05:10:57,941 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3; [2020-08-19 05:10:58,229 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 05:10:58,242 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 05:10:58,245 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 05:10:58,247 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 05:10:58,247 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 05:10:58,248 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_5-1.c [2020-08-19 05:10:58,321 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af039a502/b0c9af41d73b4fe59eb4e3edb572ad5a/FLAG7c341b04e [2020-08-19 05:10:58,750 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 05:10:58,750 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_5-1.c [2020-08-19 05:10:58,758 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af039a502/b0c9af41d73b4fe59eb4e3edb572ad5a/FLAG7c341b04e [2020-08-19 05:10:59,176 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af039a502/b0c9af41d73b4fe59eb4e3edb572ad5a [2020-08-19 05:10:59,185 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 05:10:59,187 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 05:10:59,188 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 05:10:59,188 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 05:10:59,192 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 05:10:59,193 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:10:59" (1/1) ... [2020-08-19 05:10:59,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54af2f96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:10:59, skipping insertion in model container [2020-08-19 05:10:59,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:10:59" (1/1) ... [2020-08-19 05:10:59,202 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 05:10:59,221 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 05:10:59,395 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:10:59,400 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 05:10:59,416 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:10:59,431 INFO L208 MainTranslator]: Completed translation [2020-08-19 05:10:59,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:10:59 WrapperNode [2020-08-19 05:10:59,432 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 05:10:59,433 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 05:10:59,433 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 05:10:59,433 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 05:10:59,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:10:59" (1/1) ... [2020-08-19 05:10:59,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:10:59" (1/1) ... [2020-08-19 05:10:59,454 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:10:59" (1/1) ... [2020-08-19 05:10:59,454 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:10:59" (1/1) ... [2020-08-19 05:10:59,458 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:10:59" (1/1) ... [2020-08-19 05:10:59,460 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:10:59" (1/1) ... [2020-08-19 05:10:59,461 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:10:59" (1/1) ... [2020-08-19 05:10:59,463 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 05:10:59,463 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 05:10:59,464 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 05:10:59,464 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 05:10:59,465 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:10:59" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-19 05:10:59,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 05:10:59,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 05:10:59,641 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-08-19 05:10:59,641 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 05:10:59,641 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 05:10:59,642 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 05:10:59,642 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-08-19 05:10:59,642 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 05:10:59,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 05:10:59,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 05:10:59,811 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 05:10:59,812 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-19 05:10:59,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:10:59 BoogieIcfgContainer [2020-08-19 05:10:59,816 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 05:10:59,817 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 05:10:59,818 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 05:10:59,821 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 05:10:59,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 05:10:59" (1/3) ... [2020-08-19 05:10:59,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2443cd42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:10:59, skipping insertion in model container [2020-08-19 05:10:59,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:10:59" (2/3) ... [2020-08-19 05:10:59,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2443cd42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:10:59, skipping insertion in model container [2020-08-19 05:10:59,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:10:59" (3/3) ... [2020-08-19 05:10:59,825 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_5-1.c [2020-08-19 05:10:59,837 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 05:10:59,844 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 05:10:59,859 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 05:10:59,886 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 05:10:59,886 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 05:10:59,887 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 05:10:59,887 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 05:10:59,887 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 05:10:59,887 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 05:10:59,887 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 05:10:59,888 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 05:10:59,908 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-08-19 05:10:59,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-19 05:10:59,915 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:10:59,916 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:10:59,917 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:10:59,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:10:59,924 INFO L82 PathProgramCache]: Analyzing trace with hash 537028541, now seen corresponding path program 1 times [2020-08-19 05:10:59,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:10:59,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1670149940] [2020-08-19 05:10:59,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:11:00,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:00,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:11:00,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:00,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 05:11:00,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:00,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:11:00,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1670149940] [2020-08-19 05:11:00,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:11:00,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 05:11:00,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087182846] [2020-08-19 05:11:00,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 05:11:00,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:11:00,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 05:11:00,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 05:11:00,180 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-08-19 05:11:00,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:11:00,293 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2020-08-19 05:11:00,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 05:11:00,296 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-08-19 05:11:00,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:11:00,309 INFO L225 Difference]: With dead ends: 35 [2020-08-19 05:11:00,309 INFO L226 Difference]: Without dead ends: 21 [2020-08-19 05:11:00,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 05:11:00,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-08-19 05:11:00,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-08-19 05:11:00,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-08-19 05:11:00,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2020-08-19 05:11:00,363 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 13 [2020-08-19 05:11:00,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:11:00,363 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2020-08-19 05:11:00,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 05:11:00,364 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2020-08-19 05:11:00,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-19 05:11:00,366 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:11:00,366 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:11:00,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 05:11:00,367 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:11:00,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:11:00,368 INFO L82 PathProgramCache]: Analyzing trace with hash 179123823, now seen corresponding path program 1 times [2020-08-19 05:11:00,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:11:00,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1395272149] [2020-08-19 05:11:00,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:11:00,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:00,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:11:00,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:00,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 05:11:00,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:00,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:11:00,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1395272149] [2020-08-19 05:11:00,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:11:00,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 05:11:00,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720082365] [2020-08-19 05:11:00,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 05:11:00,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:11:00,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 05:11:00,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 05:11:00,464 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 5 states. [2020-08-19 05:11:00,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:11:00,539 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2020-08-19 05:11:00,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 05:11:00,540 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-08-19 05:11:00,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:11:00,542 INFO L225 Difference]: With dead ends: 27 [2020-08-19 05:11:00,542 INFO L226 Difference]: Without dead ends: 23 [2020-08-19 05:11:00,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 05:11:00,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-08-19 05:11:00,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2020-08-19 05:11:00,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-08-19 05:11:00,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2020-08-19 05:11:00,552 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 14 [2020-08-19 05:11:00,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:11:00,553 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2020-08-19 05:11:00,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 05:11:00,553 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2020-08-19 05:11:00,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-19 05:11:00,555 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:11:00,555 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:11:00,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 05:11:00,556 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:11:00,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:11:00,556 INFO L82 PathProgramCache]: Analyzing trace with hash 806022394, now seen corresponding path program 1 times [2020-08-19 05:11:00,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:11:00,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1886171877] [2020-08-19 05:11:00,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:11:00,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:00,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:11:00,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:00,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 05:11:00,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:00,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 05:11:00,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:00,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:11:00,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:00,715 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-19 05:11:00,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1886171877] [2020-08-19 05:11:00,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:11:00,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-19 05:11:00,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768949955] [2020-08-19 05:11:00,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 05:11:00,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:11:00,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 05:11:00,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-19 05:11:00,718 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 7 states. [2020-08-19 05:11:00,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:11:00,821 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2020-08-19 05:11:00,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 05:11:00,822 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-08-19 05:11:00,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:11:00,823 INFO L225 Difference]: With dead ends: 38 [2020-08-19 05:11:00,823 INFO L226 Difference]: Without dead ends: 23 [2020-08-19 05:11:00,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-08-19 05:11:00,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-08-19 05:11:00,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-08-19 05:11:00,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-08-19 05:11:00,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-08-19 05:11:00,833 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 26 [2020-08-19 05:11:00,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:11:00,834 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-08-19 05:11:00,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 05:11:00,834 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-08-19 05:11:00,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-19 05:11:00,837 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:11:00,837 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:11:00,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 05:11:00,838 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:11:00,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:11:00,838 INFO L82 PathProgramCache]: Analyzing trace with hash -983862936, now seen corresponding path program 1 times [2020-08-19 05:11:00,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:11:00,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [826476908] [2020-08-19 05:11:00,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:11:00,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:00,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:11:00,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:00,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 05:11:00,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:00,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 05:11:00,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:00,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 05:11:00,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:00,944 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-19 05:11:00,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [826476908] [2020-08-19 05:11:00,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:11:00,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-19 05:11:00,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113619625] [2020-08-19 05:11:00,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 05:11:00,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:11:00,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 05:11:00,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 05:11:00,948 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 6 states. [2020-08-19 05:11:01,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:11:01,076 INFO L93 Difference]: Finished difference Result 41 states and 55 transitions. [2020-08-19 05:11:01,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 05:11:01,077 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-08-19 05:11:01,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:11:01,079 INFO L225 Difference]: With dead ends: 41 [2020-08-19 05:11:01,079 INFO L226 Difference]: Without dead ends: 37 [2020-08-19 05:11:01,080 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-08-19 05:11:01,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-08-19 05:11:01,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-08-19 05:11:01,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-08-19 05:11:01,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2020-08-19 05:11:01,092 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 51 transitions. Word has length 27 [2020-08-19 05:11:01,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:11:01,093 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 51 transitions. [2020-08-19 05:11:01,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 05:11:01,093 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 51 transitions. [2020-08-19 05:11:01,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-19 05:11:01,095 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:11:01,095 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:11:01,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 05:11:01,096 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:11:01,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:11:01,096 INFO L82 PathProgramCache]: Analyzing trace with hash 146085807, now seen corresponding path program 2 times [2020-08-19 05:11:01,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:11:01,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [296993114] [2020-08-19 05:11:01,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:11:01,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:01,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:11:01,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:01,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 05:11:01,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:01,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 05:11:01,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:01,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 05:11:01,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:01,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 05:11:01,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:01,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 05:11:01,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:01,252 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-19 05:11:01,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [296993114] [2020-08-19 05:11:01,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:11:01,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-19 05:11:01,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876337190] [2020-08-19 05:11:01,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 05:11:01,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:11:01,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 05:11:01,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 05:11:01,255 INFO L87 Difference]: Start difference. First operand 37 states and 51 transitions. Second operand 8 states. [2020-08-19 05:11:01,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:11:01,386 INFO L93 Difference]: Finished difference Result 79 states and 124 transitions. [2020-08-19 05:11:01,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 05:11:01,387 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2020-08-19 05:11:01,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:11:01,390 INFO L225 Difference]: With dead ends: 79 [2020-08-19 05:11:01,390 INFO L226 Difference]: Without dead ends: 48 [2020-08-19 05:11:01,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-08-19 05:11:01,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-19 05:11:01,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2020-08-19 05:11:01,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-08-19 05:11:01,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 57 transitions. [2020-08-19 05:11:01,404 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 57 transitions. Word has length 40 [2020-08-19 05:11:01,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:11:01,404 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 57 transitions. [2020-08-19 05:11:01,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 05:11:01,405 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 57 transitions. [2020-08-19 05:11:01,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-08-19 05:11:01,406 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:11:01,407 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:11:01,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 05:11:01,407 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:11:01,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:11:01,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1111873851, now seen corresponding path program 3 times [2020-08-19 05:11:01,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:11:01,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [197352147] [2020-08-19 05:11:01,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:11:01,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:01,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:11:01,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:01,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 05:11:01,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:01,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 05:11:01,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:01,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 05:11:01,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:01,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 05:11:01,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:01,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 05:11:01,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:01,532 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-08-19 05:11:01,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [197352147] [2020-08-19 05:11:01,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:11:01,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-19 05:11:01,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514098750] [2020-08-19 05:11:01,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 05:11:01,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:11:01,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 05:11:01,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-19 05:11:01,535 INFO L87 Difference]: Start difference. First operand 42 states and 57 transitions. Second operand 7 states. [2020-08-19 05:11:01,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:11:01,652 INFO L93 Difference]: Finished difference Result 65 states and 93 transitions. [2020-08-19 05:11:01,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 05:11:01,653 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2020-08-19 05:11:01,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:11:01,655 INFO L225 Difference]: With dead ends: 65 [2020-08-19 05:11:01,656 INFO L226 Difference]: Without dead ends: 61 [2020-08-19 05:11:01,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-08-19 05:11:01,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-08-19 05:11:01,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 58. [2020-08-19 05:11:01,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-08-19 05:11:01,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 84 transitions. [2020-08-19 05:11:01,678 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 84 transitions. Word has length 41 [2020-08-19 05:11:01,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:11:01,678 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 84 transitions. [2020-08-19 05:11:01,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 05:11:01,679 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 84 transitions. [2020-08-19 05:11:01,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-19 05:11:01,687 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:11:01,687 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 9, 5, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:11:01,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 05:11:01,687 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:11:01,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:11:01,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1986920854, now seen corresponding path program 4 times [2020-08-19 05:11:01,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:11:01,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1167084465] [2020-08-19 05:11:01,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:11:01,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:01,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:11:01,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:01,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 05:11:01,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:01,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 05:11:01,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:01,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 05:11:01,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:01,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 05:11:01,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:01,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 05:11:01,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:01,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 05:11:01,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:01,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:11:01,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:01,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 05:11:01,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:01,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 05:11:01,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:01,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 05:11:01,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:01,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 05:11:01,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:01,980 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 77 proven. 104 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-08-19 05:11:01,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1167084465] [2020-08-19 05:11:01,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:11:01,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-19 05:11:01,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96577032] [2020-08-19 05:11:01,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 05:11:01,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:11:01,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 05:11:01,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-08-19 05:11:01,984 INFO L87 Difference]: Start difference. First operand 58 states and 84 transitions. Second operand 11 states. [2020-08-19 05:11:02,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:11:02,344 INFO L93 Difference]: Finished difference Result 107 states and 178 transitions. [2020-08-19 05:11:02,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-19 05:11:02,345 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 82 [2020-08-19 05:11:02,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:11:02,348 INFO L225 Difference]: With dead ends: 107 [2020-08-19 05:11:02,348 INFO L226 Difference]: Without dead ends: 57 [2020-08-19 05:11:02,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2020-08-19 05:11:02,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-08-19 05:11:02,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2020-08-19 05:11:02,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-08-19 05:11:02,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 70 transitions. [2020-08-19 05:11:02,361 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 70 transitions. Word has length 82 [2020-08-19 05:11:02,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:11:02,362 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 70 transitions. [2020-08-19 05:11:02,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 05:11:02,362 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 70 transitions. [2020-08-19 05:11:02,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-19 05:11:02,364 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:11:02,365 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 15, 9, 9, 9, 9, 9, 9, 9, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:11:02,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 05:11:02,365 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:11:02,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:11:02,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1040445716, now seen corresponding path program 5 times [2020-08-19 05:11:02,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:11:02,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [242201840] [2020-08-19 05:11:02,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:11:02,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:02,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:11:02,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:02,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 05:11:02,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:02,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 05:11:02,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:02,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 05:11:02,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:02,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 05:11:02,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:02,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 05:11:02,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:02,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 05:11:02,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:02,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 05:11:02,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:02,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:11:02,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:02,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 05:11:02,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:02,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 05:11:02,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:02,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-19 05:11:02,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:02,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 05:11:02,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:02,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 05:11:02,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:02,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 05:11:02,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:02,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 05:11:02,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:02,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 05:11:02,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:02,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:11:02,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:02,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 05:11:02,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:02,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 05:11:02,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:02,819 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 193 proven. 313 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2020-08-19 05:11:02,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [242201840] [2020-08-19 05:11:02,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:11:02,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 05:11:02,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227232895] [2020-08-19 05:11:02,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 05:11:02,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:11:02,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 05:11:02,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-08-19 05:11:02,823 INFO L87 Difference]: Start difference. First operand 54 states and 70 transitions. Second operand 13 states. [2020-08-19 05:11:03,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:11:03,290 INFO L93 Difference]: Finished difference Result 114 states and 179 transitions. [2020-08-19 05:11:03,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 05:11:03,290 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 136 [2020-08-19 05:11:03,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:11:03,292 INFO L225 Difference]: With dead ends: 114 [2020-08-19 05:11:03,293 INFO L226 Difference]: Without dead ends: 73 [2020-08-19 05:11:03,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=154, Invalid=496, Unknown=0, NotChecked=0, Total=650 [2020-08-19 05:11:03,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-08-19 05:11:03,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 63. [2020-08-19 05:11:03,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-08-19 05:11:03,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 81 transitions. [2020-08-19 05:11:03,312 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 81 transitions. Word has length 136 [2020-08-19 05:11:03,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:11:03,314 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 81 transitions. [2020-08-19 05:11:03,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 05:11:03,314 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 81 transitions. [2020-08-19 05:11:03,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-08-19 05:11:03,317 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:11:03,317 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 12, 7, 7, 7, 7, 7, 7, 7, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:11:03,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 05:11:03,317 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:11:03,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:11:03,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1200034344, now seen corresponding path program 6 times [2020-08-19 05:11:03,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:11:03,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [190590384] [2020-08-19 05:11:03,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:11:03,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:03,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:11:03,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:03,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 05:11:03,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:03,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 05:11:03,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:03,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 05:11:03,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:03,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 05:11:03,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:03,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 05:11:03,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:03,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 05:11:03,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:03,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 05:11:03,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:03,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:11:03,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:03,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 05:11:03,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:03,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 05:11:03,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:03,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-19 05:11:03,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:03,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 05:11:03,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:03,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 05:11:03,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:03,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 05:11:03,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:03,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 05:11:03,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:03,841 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 185 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2020-08-19 05:11:03,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [190590384] [2020-08-19 05:11:03,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:11:03,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-19 05:11:03,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271013804] [2020-08-19 05:11:03,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 05:11:03,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:11:03,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 05:11:03,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-08-19 05:11:03,844 INFO L87 Difference]: Start difference. First operand 63 states and 81 transitions. Second operand 16 states. [2020-08-19 05:11:04,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:11:04,086 INFO L93 Difference]: Finished difference Result 76 states and 100 transitions. [2020-08-19 05:11:04,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 05:11:04,087 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 109 [2020-08-19 05:11:04,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:11:04,089 INFO L225 Difference]: With dead ends: 76 [2020-08-19 05:11:04,090 INFO L226 Difference]: Without dead ends: 72 [2020-08-19 05:11:04,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2020-08-19 05:11:04,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-08-19 05:11:04,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-08-19 05:11:04,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-08-19 05:11:04,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 94 transitions. [2020-08-19 05:11:04,102 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 94 transitions. Word has length 109 [2020-08-19 05:11:04,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:11:04,103 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 94 transitions. [2020-08-19 05:11:04,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-19 05:11:04,103 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 94 transitions. [2020-08-19 05:11:04,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-19 05:11:04,105 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:11:04,106 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 15, 9, 9, 9, 9, 9, 9, 9, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:11:04,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 05:11:04,106 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:11:04,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:11:04,107 INFO L82 PathProgramCache]: Analyzing trace with hash -344605238, now seen corresponding path program 7 times [2020-08-19 05:11:04,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:11:04,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1925260428] [2020-08-19 05:11:04,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:11:04,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:04,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:11:04,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:04,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 05:11:04,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:04,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 05:11:04,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:04,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 05:11:04,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:04,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 05:11:04,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:04,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 05:11:04,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:04,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 05:11:04,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:04,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 05:11:04,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:04,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 05:11:04,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:04,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:11:04,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:04,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 05:11:04,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:04,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 05:11:04,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:04,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-19 05:11:04,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:04,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 05:11:04,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:04,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 05:11:04,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:04,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-19 05:11:04,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:04,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 05:11:04,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:04,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 05:11:04,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:04,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 05:11:04,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:04,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 05:11:04,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:04,433 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 204 proven. 219 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked. [2020-08-19 05:11:04,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1925260428] [2020-08-19 05:11:04,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:11:04,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-19 05:11:04,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724647926] [2020-08-19 05:11:04,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 05:11:04,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:11:04,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 05:11:04,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-08-19 05:11:04,436 INFO L87 Difference]: Start difference. First operand 71 states and 94 transitions. Second operand 11 states. [2020-08-19 05:11:04,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:11:04,701 INFO L93 Difference]: Finished difference Result 135 states and 192 transitions. [2020-08-19 05:11:04,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 05:11:04,701 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 136 [2020-08-19 05:11:04,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:11:04,702 INFO L225 Difference]: With dead ends: 135 [2020-08-19 05:11:04,702 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 05:11:04,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-08-19 05:11:04,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 05:11:04,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 05:11:04,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 05:11:04,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 05:11:04,705 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 136 [2020-08-19 05:11:04,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:11:04,705 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 05:11:04,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 05:11:04,705 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 05:11:04,705 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 05:11:04,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 05:11:04,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 05:11:05,094 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 30 [2020-08-19 05:11:05,133 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-19 05:11:05,133 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-19 05:11:05,134 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-19 05:11:05,134 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-19 05:11:05,134 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-19 05:11:05,134 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-19 05:11:05,134 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 27) no Hoare annotation was computed. [2020-08-19 05:11:05,134 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 23 30) the Hoare annotation is: true [2020-08-19 05:11:05,134 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-08-19 05:11:05,135 INFO L268 CegarLoopResult]: For program point L26(lines 26 28) no Hoare annotation was computed. [2020-08-19 05:11:05,135 INFO L264 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (and (<= main_~x~0 5) (<= 5 main_~x~0)) [2020-08-19 05:11:05,135 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 23 30) no Hoare annotation was computed. [2020-08-19 05:11:05,135 INFO L268 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-08-19 05:11:05,135 INFO L268 CegarLoopResult]: For program point L26-2(lines 26 28) no Hoare annotation was computed. [2020-08-19 05:11:05,135 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 23 30) no Hoare annotation was computed. [2020-08-19 05:11:05,136 INFO L268 CegarLoopResult]: For program point fiboEXIT(lines 5 13) no Hoare annotation was computed. [2020-08-19 05:11:05,136 INFO L268 CegarLoopResult]: For program point fiboFINAL(lines 5 13) no Hoare annotation was computed. [2020-08-19 05:11:05,136 INFO L264 CegarLoopResult]: At program point L11(line 11) the Hoare annotation is: (and (not (<= |fibo_#in~n| 1)) (= fibo_~n |fibo_#in~n|)) [2020-08-19 05:11:05,136 INFO L268 CegarLoopResult]: For program point L11-1(line 11) no Hoare annotation was computed. [2020-08-19 05:11:05,136 INFO L264 CegarLoopResult]: At program point L11-2(line 11) the Hoare annotation is: (let ((.cse1 (<= 1 |fibo_#t~ret0|)) (.cse2 (<= |fibo_#t~ret0| 1)) (.cse0 (= fibo_~n |fibo_#in~n|))) (or (and (<= 3 |fibo_#t~ret0|) (<= 5 fibo_~n) (<= |fibo_#t~ret0| 3) .cse0) (and .cse0 (<= 6 |fibo_#in~n|)) (and .cse1 (<= 2 |fibo_#in~n|) .cse2 (<= |fibo_#in~n| 2) .cse0) (and (<= |fibo_#in~n| 4) (<= 2 |fibo_#t~ret0|) (<= |fibo_#t~ret0| 2) .cse0 (<= 4 |fibo_#in~n|)) (and .cse1 .cse2 .cse0 (<= 3 |fibo_#in~n|) (<= |fibo_#in~n| 3)))) [2020-08-19 05:11:05,137 INFO L268 CegarLoopResult]: For program point L8(lines 8 12) no Hoare annotation was computed. [2020-08-19 05:11:05,137 INFO L268 CegarLoopResult]: For program point L11-3(line 11) no Hoare annotation was computed. [2020-08-19 05:11:05,137 INFO L268 CegarLoopResult]: For program point L6(lines 6 12) no Hoare annotation was computed. [2020-08-19 05:11:05,137 INFO L271 CegarLoopResult]: At program point fiboENTRY(lines 5 13) the Hoare annotation is: true [2020-08-19 05:11:05,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 05:11:05 BoogieIcfgContainer [2020-08-19 05:11:05,143 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 05:11:05,145 INFO L168 Benchmark]: Toolchain (without parser) took 5958.48 ms. Allocated memory was 147.8 MB in the beginning and 304.6 MB in the end (delta: 156.8 MB). Free memory was 104.2 MB in the beginning and 217.5 MB in the end (delta: -113.3 MB). Peak memory consumption was 136.4 MB. Max. memory is 7.1 GB. [2020-08-19 05:11:05,146 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-19 05:11:05,147 INFO L168 Benchmark]: CACSL2BoogieTranslator took 244.55 ms. Allocated memory is still 147.8 MB. Free memory was 104.0 MB in the beginning and 94.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-08-19 05:11:05,148 INFO L168 Benchmark]: Boogie Preprocessor took 30.17 ms. Allocated memory is still 147.8 MB. Free memory was 94.7 MB in the beginning and 93.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-08-19 05:11:05,149 INFO L168 Benchmark]: RCFGBuilder took 352.84 ms. Allocated memory was 147.8 MB in the beginning and 202.9 MB in the end (delta: 55.1 MB). Free memory was 93.2 MB in the beginning and 170.4 MB in the end (delta: -77.2 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-08-19 05:11:05,149 INFO L168 Benchmark]: TraceAbstraction took 5325.87 ms. Allocated memory was 202.9 MB in the beginning and 304.6 MB in the end (delta: 101.7 MB). Free memory was 169.7 MB in the beginning and 217.5 MB in the end (delta: -47.8 MB). Peak memory consumption was 146.8 MB. Max. memory is 7.1 GB. [2020-08-19 05:11:05,153 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 244.55 ms. Allocated memory is still 147.8 MB. Free memory was 104.0 MB in the beginning and 94.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.17 ms. Allocated memory is still 147.8 MB. Free memory was 94.7 MB in the beginning and 93.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 352.84 ms. Allocated memory was 147.8 MB in the beginning and 202.9 MB in the end (delta: 55.1 MB). Free memory was 93.2 MB in the beginning and 170.4 MB in the end (delta: -77.2 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5325.87 ms. Allocated memory was 202.9 MB in the beginning and 304.6 MB in the end (delta: 101.7 MB). Free memory was 169.7 MB in the beginning and 217.5 MB in the end (delta: -47.8 MB). Peak memory consumption was 146.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 27]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.8s, OverallIterations: 10, TraceHistogramMax: 19, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 218 SDtfs, 262 SDslu, 932 SDs, 0 SdLazy, 996 SolverSat, 220 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 345 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=71occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 25 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 137 PreInvPairs, 171 NumberOfFragments, 89 HoareAnnotationTreeSize, 137 FomulaSimplifications, 126 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 703 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 624 NumberOfCodeBlocks, 624 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 614 ConstructedInterpolants, 0 QuantifiedInterpolants, 134010 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 1993/2854 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...