/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_8-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 00:19:31,675 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 00:19:31,678 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 00:19:31,716 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 00:19:31,716 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 00:19:31,717 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 00:19:31,721 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 00:19:31,723 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 00:19:31,725 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 00:19:31,725 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 00:19:31,726 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 00:19:31,728 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 00:19:31,728 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 00:19:31,729 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 00:19:31,730 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 00:19:31,731 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 00:19:31,731 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 00:19:31,732 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 00:19:31,734 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 00:19:31,735 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 00:19:31,737 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 00:19:31,738 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 00:19:31,739 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 00:19:31,739 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 00:19:31,742 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 00:19:31,749 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 00:19:31,749 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 00:19:31,750 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 00:19:31,751 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 00:19:31,772 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 00:19:31,773 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 00:19:31,774 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 00:19:31,774 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 00:19:31,774 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 00:19:31,774 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 00:19:31,775 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 00:19:31,775 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 00:19:31,775 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 00:19:31,775 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 00:19:31,775 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 00:19:31,776 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 00:19:31,776 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 00:19:31,776 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 00:19:31,776 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 00:19:31,776 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 00:19:31,777 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 00:19:31,777 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 00:19:31,777 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 00:19:31,777 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 00:19:31,777 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 00:19:31,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:19:31,778 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 00:19:31,778 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 00:19:31,778 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 00:19:31,779 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 00:19:31,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 00:19:31,779 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 00:19:31,779 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 00:19:31,779 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=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; [2020-08-19 00:19:32,074 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 00:19:32,085 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 00:19:32,089 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 00:19:32,091 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 00:19:32,091 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 00:19:32,092 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_8-2.c [2020-08-19 00:19:32,163 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/62a2d6276/585f40c127984b00ab155d7aa7ff8cbd/FLAGb44c86a9f [2020-08-19 00:19:32,592 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 00:19:32,593 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_8-2.c [2020-08-19 00:19:32,600 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/62a2d6276/585f40c127984b00ab155d7aa7ff8cbd/FLAGb44c86a9f [2020-08-19 00:19:32,997 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/62a2d6276/585f40c127984b00ab155d7aa7ff8cbd [2020-08-19 00:19:33,005 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 00:19:33,007 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 00:19:33,008 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 00:19:33,008 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 00:19:33,012 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 00:19:33,013 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:19:32" (1/1) ... [2020-08-19 00:19:33,016 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f1c8c30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:19:33, skipping insertion in model container [2020-08-19 00:19:33,016 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:19:32" (1/1) ... [2020-08-19 00:19:33,025 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 00:19:33,042 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 00:19:33,329 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:19:33,338 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 00:19:33,358 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:19:33,375 INFO L208 MainTranslator]: Completed translation [2020-08-19 00:19:33,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:19:33 WrapperNode [2020-08-19 00:19:33,376 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 00:19:33,377 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 00:19:33,377 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 00:19:33,378 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 00:19:33,395 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:19:33" (1/1) ... [2020-08-19 00:19:33,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:19:33" (1/1) ... [2020-08-19 00:19:33,558 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:19:33" (1/1) ... [2020-08-19 00:19:33,558 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:19:33" (1/1) ... [2020-08-19 00:19:33,565 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:19:33" (1/1) ... [2020-08-19 00:19:33,569 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:19:33" (1/1) ... [2020-08-19 00:19:33,575 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:19:33" (1/1) ... [2020-08-19 00:19:33,581 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 00:19:33,582 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 00:19:33,582 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 00:19:33,582 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 00:19:33,583 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:19:33" (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 00:19:33,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 00:19:33,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 00:19:33,649 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-08-19 00:19:33,650 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-08-19 00:19:33,650 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 00:19:33,650 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 00:19:33,650 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 00:19:33,650 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-08-19 00:19:33,650 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-08-19 00:19:33,651 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 00:19:33,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 00:19:33,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 00:19:33,862 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 00:19:33,862 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-19 00:19:33,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:19:33 BoogieIcfgContainer [2020-08-19 00:19:33,867 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 00:19:33,868 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 00:19:33,869 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 00:19:33,872 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 00:19:33,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 12:19:32" (1/3) ... [2020-08-19 00:19:33,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@241726a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:19:33, skipping insertion in model container [2020-08-19 00:19:33,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:19:33" (2/3) ... [2020-08-19 00:19:33,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@241726a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:19:33, skipping insertion in model container [2020-08-19 00:19:33,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:19:33" (3/3) ... [2020-08-19 00:19:33,876 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_8-2.c [2020-08-19 00:19:33,889 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 00:19:33,898 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 00:19:33,915 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 00:19:33,957 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 00:19:33,958 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 00:19:33,958 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 00:19:33,958 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 00:19:33,958 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 00:19:33,958 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 00:19:33,958 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 00:19:33,959 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 00:19:34,001 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-08-19 00:19:34,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-19 00:19:34,012 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:19:34,014 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:19:34,015 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:19:34,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:19:34,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1464461757, now seen corresponding path program 1 times [2020-08-19 00:19:34,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:19:34,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1946109430] [2020-08-19 00:19:34,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:19:34,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:34,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:19:34,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:34,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 00:19:34,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:34,300 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 00:19:34,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1946109430] [2020-08-19 00:19:34,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:19:34,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 00:19:34,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945801654] [2020-08-19 00:19:34,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 00:19:34,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:19:34,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 00:19:34,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 00:19:34,324 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2020-08-19 00:19:34,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:19:34,452 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2020-08-19 00:19:34,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 00:19:34,455 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-08-19 00:19:34,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:19:34,464 INFO L225 Difference]: With dead ends: 44 [2020-08-19 00:19:34,465 INFO L226 Difference]: Without dead ends: 30 [2020-08-19 00:19:34,468 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 00:19:34,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-08-19 00:19:34,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-08-19 00:19:34,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-19 00:19:34,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-08-19 00:19:34,512 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 13 [2020-08-19 00:19:34,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:19:34,513 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-08-19 00:19:34,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 00:19:34,514 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-08-19 00:19:34,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-19 00:19:34,515 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:19:34,516 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:19:34,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 00:19:34,516 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:19:34,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:19:34,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1134800479, now seen corresponding path program 1 times [2020-08-19 00:19:34,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:19:34,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142534148] [2020-08-19 00:19:34,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:19:34,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:34,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:19:34,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:34,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 00:19:34,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:34,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:19:34,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [142534148] [2020-08-19 00:19:34,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:19:34,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 00:19:34,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597010458] [2020-08-19 00:19:34,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 00:19:34,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:19:34,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 00:19:34,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 00:19:34,592 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 5 states. [2020-08-19 00:19:34,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:19:34,656 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2020-08-19 00:19:34,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 00:19:34,657 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-08-19 00:19:34,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:19:34,659 INFO L225 Difference]: With dead ends: 36 [2020-08-19 00:19:34,659 INFO L226 Difference]: Without dead ends: 32 [2020-08-19 00:19:34,660 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 00:19:34,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-08-19 00:19:34,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-08-19 00:19:34,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-19 00:19:34,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-08-19 00:19:34,670 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 14 [2020-08-19 00:19:34,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:19:34,671 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-08-19 00:19:34,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 00:19:34,671 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-08-19 00:19:34,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-19 00:19:34,673 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:19:34,673 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:19:34,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 00:19:34,673 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:19:34,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:19:34,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1592795560, now seen corresponding path program 1 times [2020-08-19 00:19:34,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:19:34,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [267966995] [2020-08-19 00:19:34,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:19:34,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:34,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:19:34,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:34,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 00:19:34,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:34,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:34,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:34,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:19:34,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:34,825 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 00:19:34,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [267966995] [2020-08-19 00:19:34,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:19:34,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-19 00:19:34,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243722966] [2020-08-19 00:19:34,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 00:19:34,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:19:34,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 00:19:34,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-19 00:19:34,828 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 7 states. [2020-08-19 00:19:34,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:19:34,922 INFO L93 Difference]: Finished difference Result 58 states and 78 transitions. [2020-08-19 00:19:34,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 00:19:34,923 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-08-19 00:19:34,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:19:34,924 INFO L225 Difference]: With dead ends: 58 [2020-08-19 00:19:34,925 INFO L226 Difference]: Without dead ends: 34 [2020-08-19 00:19:34,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-19 00:19:34,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-08-19 00:19:34,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-08-19 00:19:34,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-08-19 00:19:34,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2020-08-19 00:19:34,937 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 26 [2020-08-19 00:19:34,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:19:34,937 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2020-08-19 00:19:34,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 00:19:34,938 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2020-08-19 00:19:34,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-19 00:19:34,940 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:19:34,940 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:19:34,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 00:19:34,941 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:19:34,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:19:34,941 INFO L82 PathProgramCache]: Analyzing trace with hash 746633022, now seen corresponding path program 1 times [2020-08-19 00:19:34,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:19:34,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1625777585] [2020-08-19 00:19:34,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:19:34,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:34,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:19:34,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:35,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 00:19:35,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:35,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:35,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:35,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:35,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:35,139 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 00:19:35,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1625777585] [2020-08-19 00:19:35,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:19:35,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-19 00:19:35,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047402072] [2020-08-19 00:19:35,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 00:19:35,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:19:35,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 00:19:35,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-19 00:19:35,148 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand 7 states. [2020-08-19 00:19:35,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:19:35,358 INFO L93 Difference]: Finished difference Result 54 states and 74 transitions. [2020-08-19 00:19:35,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 00:19:35,359 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-08-19 00:19:35,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:19:35,362 INFO L225 Difference]: With dead ends: 54 [2020-08-19 00:19:35,363 INFO L226 Difference]: Without dead ends: 50 [2020-08-19 00:19:35,363 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:19:35,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-08-19 00:19:35,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2020-08-19 00:19:35,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-08-19 00:19:35,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 65 transitions. [2020-08-19 00:19:35,376 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 65 transitions. Word has length 27 [2020-08-19 00:19:35,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:19:35,377 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 65 transitions. [2020-08-19 00:19:35,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 00:19:35,377 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 65 transitions. [2020-08-19 00:19:35,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-08-19 00:19:35,379 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:19:35,379 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:19:35,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 00:19:35,380 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:19:35,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:19:35,380 INFO L82 PathProgramCache]: Analyzing trace with hash 986908919, now seen corresponding path program 1 times [2020-08-19 00:19:35,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:19:35,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102847042] [2020-08-19 00:19:35,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:19:35,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:35,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:19:35,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:35,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 00:19:35,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:35,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:35,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:35,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:35,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:35,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:19:35,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:35,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:19:35,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:35,474 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-19 00:19:35,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2102847042] [2020-08-19 00:19:35,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:19:35,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-19 00:19:35,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873282174] [2020-08-19 00:19:35,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 00:19:35,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:19:35,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 00:19:35,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 00:19:35,477 INFO L87 Difference]: Start difference. First operand 48 states and 65 transitions. Second operand 6 states. [2020-08-19 00:19:35,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:19:35,539 INFO L93 Difference]: Finished difference Result 94 states and 142 transitions. [2020-08-19 00:19:35,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 00:19:35,540 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2020-08-19 00:19:35,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:19:35,542 INFO L225 Difference]: With dead ends: 94 [2020-08-19 00:19:35,542 INFO L226 Difference]: Without dead ends: 52 [2020-08-19 00:19:35,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-19 00:19:35,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-08-19 00:19:35,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-08-19 00:19:35,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-08-19 00:19:35,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 71 transitions. [2020-08-19 00:19:35,555 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 71 transitions. Word has length 39 [2020-08-19 00:19:35,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:19:35,556 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 71 transitions. [2020-08-19 00:19:35,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 00:19:35,556 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 71 transitions. [2020-08-19 00:19:35,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-19 00:19:35,558 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:19:35,558 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:19:35,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 00:19:35,559 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:19:35,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:19:35,559 INFO L82 PathProgramCache]: Analyzing trace with hash -2100495745, now seen corresponding path program 1 times [2020-08-19 00:19:35,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:19:35,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1571050677] [2020-08-19 00:19:35,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:19:35,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:35,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:19:35,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:35,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 00:19:35,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:35,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:35,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:35,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:35,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:35,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:35,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:35,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:35,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:35,768 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-08-19 00:19:35,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1571050677] [2020-08-19 00:19:35,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:19:35,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-19 00:19:35,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581839586] [2020-08-19 00:19:35,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 00:19:35,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:19:35,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 00:19:35,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 00:19:35,773 INFO L87 Difference]: Start difference. First operand 52 states and 71 transitions. Second operand 8 states. [2020-08-19 00:19:35,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:19:35,915 INFO L93 Difference]: Finished difference Result 103 states and 158 transitions. [2020-08-19 00:19:35,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 00:19:35,916 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2020-08-19 00:19:35,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:19:35,918 INFO L225 Difference]: With dead ends: 103 [2020-08-19 00:19:35,918 INFO L226 Difference]: Without dead ends: 57 [2020-08-19 00:19:35,922 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-19 00:19:35,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-08-19 00:19:35,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2020-08-19 00:19:35,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-08-19 00:19:35,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 74 transitions. [2020-08-19 00:19:35,942 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 74 transitions. Word has length 40 [2020-08-19 00:19:35,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:19:35,945 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 74 transitions. [2020-08-19 00:19:35,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 00:19:35,945 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 74 transitions. [2020-08-19 00:19:35,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-08-19 00:19:35,952 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:19:35,953 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:19:35,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 00:19:35,953 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:19:35,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:19:35,956 INFO L82 PathProgramCache]: Analyzing trace with hash 208191613, now seen corresponding path program 1 times [2020-08-19 00:19:35,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:19:35,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771597065] [2020-08-19 00:19:35,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:19:35,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:35,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:19:36,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:36,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 00:19:36,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:36,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:36,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:36,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:36,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:36,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:36,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:36,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:36,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:36,083 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-19 00:19:36,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771597065] [2020-08-19 00:19:36,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:19:36,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-19 00:19:36,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172426810] [2020-08-19 00:19:36,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 00:19:36,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:19:36,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 00:19:36,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 00:19:36,086 INFO L87 Difference]: Start difference. First operand 54 states and 74 transitions. Second operand 8 states. [2020-08-19 00:19:36,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:19:36,317 INFO L93 Difference]: Finished difference Result 86 states and 126 transitions. [2020-08-19 00:19:36,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 00:19:36,318 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2020-08-19 00:19:36,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:19:36,323 INFO L225 Difference]: With dead ends: 86 [2020-08-19 00:19:36,324 INFO L226 Difference]: Without dead ends: 82 [2020-08-19 00:19:36,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-08-19 00:19:36,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-08-19 00:19:36,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 79. [2020-08-19 00:19:36,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-08-19 00:19:36,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 118 transitions. [2020-08-19 00:19:36,353 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 118 transitions. Word has length 41 [2020-08-19 00:19:36,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:19:36,354 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 118 transitions. [2020-08-19 00:19:36,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 00:19:36,354 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 118 transitions. [2020-08-19 00:19:36,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-19 00:19:36,356 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:19:36,357 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:19:36,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 00:19:36,357 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:19:36,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:19:36,358 INFO L82 PathProgramCache]: Analyzing trace with hash -405677468, now seen corresponding path program 1 times [2020-08-19 00:19:36,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:19:36,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [779926975] [2020-08-19 00:19:36,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:19:36,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:36,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:19:36,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:36,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 00:19:36,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:36,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:36,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:36,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:36,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:36,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:36,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:36,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:36,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:36,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:36,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:36,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 00:19:36,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:36,498 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-08-19 00:19:36,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [779926975] [2020-08-19 00:19:36,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:19:36,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-19 00:19:36,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433568625] [2020-08-19 00:19:36,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 00:19:36,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:19:36,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 00:19:36,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 00:19:36,500 INFO L87 Difference]: Start difference. First operand 79 states and 118 transitions. Second operand 8 states. [2020-08-19 00:19:36,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:19:36,618 INFO L93 Difference]: Finished difference Result 167 states and 288 transitions. [2020-08-19 00:19:36,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 00:19:36,619 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2020-08-19 00:19:36,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:19:36,621 INFO L225 Difference]: With dead ends: 167 [2020-08-19 00:19:36,621 INFO L226 Difference]: Without dead ends: 94 [2020-08-19 00:19:36,623 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-19 00:19:36,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-08-19 00:19:36,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 88. [2020-08-19 00:19:36,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-08-19 00:19:36,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 134 transitions. [2020-08-19 00:19:36,640 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 134 transitions. Word has length 54 [2020-08-19 00:19:36,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:19:36,641 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 134 transitions. [2020-08-19 00:19:36,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 00:19:36,641 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 134 transitions. [2020-08-19 00:19:36,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-08-19 00:19:36,646 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:19:36,646 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:19:36,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 00:19:36,647 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:19:36,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:19:36,647 INFO L82 PathProgramCache]: Analyzing trace with hash -242988780, now seen corresponding path program 1 times [2020-08-19 00:19:36,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:19:36,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [158960952] [2020-08-19 00:19:36,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:19:36,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:36,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:19:36,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:36,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 00:19:36,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:36,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:36,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:36,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:36,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:36,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:36,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:36,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:36,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:36,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:36,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:36,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:19:36,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:36,805 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-19 00:19:36,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [158960952] [2020-08-19 00:19:36,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:19:36,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 00:19:36,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022152441] [2020-08-19 00:19:36,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 00:19:36,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:19:36,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 00:19:36,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-08-19 00:19:36,808 INFO L87 Difference]: Start difference. First operand 88 states and 134 transitions. Second operand 10 states. [2020-08-19 00:19:37,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:19:37,052 INFO L93 Difference]: Finished difference Result 188 states and 331 transitions. [2020-08-19 00:19:37,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 00:19:37,053 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 55 [2020-08-19 00:19:37,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:19:37,055 INFO L225 Difference]: With dead ends: 188 [2020-08-19 00:19:37,055 INFO L226 Difference]: Without dead ends: 109 [2020-08-19 00:19:37,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-08-19 00:19:37,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-08-19 00:19:37,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 100. [2020-08-19 00:19:37,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-19 00:19:37,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 158 transitions. [2020-08-19 00:19:37,098 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 158 transitions. Word has length 55 [2020-08-19 00:19:37,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:19:37,099 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 158 transitions. [2020-08-19 00:19:37,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 00:19:37,099 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 158 transitions. [2020-08-19 00:19:37,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-19 00:19:37,103 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:19:37,104 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:19:37,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 00:19:37,104 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:19:37,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:19:37,105 INFO L82 PathProgramCache]: Analyzing trace with hash -908952008, now seen corresponding path program 2 times [2020-08-19 00:19:37,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:19:37,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1621547051] [2020-08-19 00:19:37,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:19:37,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:37,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:19:37,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:37,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 00:19:37,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:37,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:37,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:37,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:37,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:37,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:37,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:37,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:37,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:37,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:37,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:37,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:19:37,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:37,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:37,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:37,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:37,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:37,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:37,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:37,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:37,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:37,356 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 30 proven. 52 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-08-19 00:19:37,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1621547051] [2020-08-19 00:19:37,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:19:37,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 00:19:37,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555304057] [2020-08-19 00:19:37,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 00:19:37,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:19:37,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 00:19:37,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-19 00:19:37,360 INFO L87 Difference]: Start difference. First operand 100 states and 158 transitions. Second operand 12 states. [2020-08-19 00:19:37,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:19:37,767 INFO L93 Difference]: Finished difference Result 199 states and 354 transitions. [2020-08-19 00:19:37,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-19 00:19:37,767 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 82 [2020-08-19 00:19:37,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:19:37,770 INFO L225 Difference]: With dead ends: 199 [2020-08-19 00:19:37,770 INFO L226 Difference]: Without dead ends: 86 [2020-08-19 00:19:37,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2020-08-19 00:19:37,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-08-19 00:19:37,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 71. [2020-08-19 00:19:37,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-08-19 00:19:37,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 93 transitions. [2020-08-19 00:19:37,782 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 93 transitions. Word has length 82 [2020-08-19 00:19:37,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:19:37,782 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 93 transitions. [2020-08-19 00:19:37,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 00:19:37,783 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 93 transitions. [2020-08-19 00:19:37,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-08-19 00:19:37,784 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:19:37,784 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:19:37,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 00:19:37,785 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:19:37,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:19:37,785 INFO L82 PathProgramCache]: Analyzing trace with hash -2119203654, now seen corresponding path program 2 times [2020-08-19 00:19:37,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:19:37,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1063272894] [2020-08-19 00:19:37,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:19:37,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:37,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:19:37,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:37,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 00:19:37,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:37,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:37,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:37,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:37,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:37,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:37,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:37,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:37,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:37,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:37,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:37,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:37,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:37,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:19:37,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:37,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 00:19:37,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:37,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:37,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:37,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:37,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:37,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:37,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:37,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:37,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:37,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:37,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:38,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:19:38,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:38,023 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 44 proven. 79 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-08-19 00:19:38,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1063272894] [2020-08-19 00:19:38,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:19:38,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 00:19:38,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826153226] [2020-08-19 00:19:38,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 00:19:38,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:19:38,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 00:19:38,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-08-19 00:19:38,026 INFO L87 Difference]: Start difference. First operand 71 states and 93 transitions. Second operand 10 states. [2020-08-19 00:19:38,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:19:38,232 INFO L93 Difference]: Finished difference Result 142 states and 204 transitions. [2020-08-19 00:19:38,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 00:19:38,233 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 110 [2020-08-19 00:19:38,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:19:38,235 INFO L225 Difference]: With dead ends: 142 [2020-08-19 00:19:38,235 INFO L226 Difference]: Without dead ends: 78 [2020-08-19 00:19:38,236 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-08-19 00:19:38,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-08-19 00:19:38,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-08-19 00:19:38,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-08-19 00:19:38,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 100 transitions. [2020-08-19 00:19:38,245 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 100 transitions. Word has length 110 [2020-08-19 00:19:38,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:19:38,245 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 100 transitions. [2020-08-19 00:19:38,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 00:19:38,245 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 100 transitions. [2020-08-19 00:19:38,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-08-19 00:19:38,247 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:19:38,247 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 13, 10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:19:38,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 00:19:38,248 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:19:38,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:19:38,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1263382818, now seen corresponding path program 3 times [2020-08-19 00:19:38,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:19:38,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993254776] [2020-08-19 00:19:38,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:19:38,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:38,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:19:38,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:38,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 00:19:38,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:38,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:38,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:38,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:38,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:38,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:38,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:38,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:38,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:38,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:38,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:38,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:38,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:38,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:19:38,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:38,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:38,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:38,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:38,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:38,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:38,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:38,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-08-19 00:19:38,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:38,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:38,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:38,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:38,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:38,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-19 00:19:38,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:38,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:38,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:38,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:38,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:38,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:38,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:38,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:38,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:38,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:38,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:38,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:19:38,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:38,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:38,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:38,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:38,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:38,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:38,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:38,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-08-19 00:19:38,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:38,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:38,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:38,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:38,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:38,820 INFO L134 CoverageAnalysis]: Checked inductivity of 999 backedges. 133 proven. 373 refuted. 0 times theorem prover too weak. 493 trivial. 0 not checked. [2020-08-19 00:19:38,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993254776] [2020-08-19 00:19:38,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:19:38,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-19 00:19:38,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032011357] [2020-08-19 00:19:38,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 00:19:38,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:19:38,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 00:19:38,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-08-19 00:19:38,823 INFO L87 Difference]: Start difference. First operand 78 states and 100 transitions. Second operand 15 states. [2020-08-19 00:19:39,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:19:39,444 INFO L93 Difference]: Finished difference Result 184 states and 282 transitions. [2020-08-19 00:19:39,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-19 00:19:39,445 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 192 [2020-08-19 00:19:39,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:19:39,448 INFO L225 Difference]: With dead ends: 184 [2020-08-19 00:19:39,448 INFO L226 Difference]: Without dead ends: 111 [2020-08-19 00:19:39,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=137, Invalid=675, Unknown=0, NotChecked=0, Total=812 [2020-08-19 00:19:39,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-08-19 00:19:39,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 99. [2020-08-19 00:19:39,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-08-19 00:19:39,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 133 transitions. [2020-08-19 00:19:39,464 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 133 transitions. Word has length 192 [2020-08-19 00:19:39,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:19:39,466 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 133 transitions. [2020-08-19 00:19:39,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-19 00:19:39,466 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 133 transitions. [2020-08-19 00:19:39,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-19 00:19:39,470 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:19:39,470 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 8, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:19:39,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 00:19:39,471 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:19:39,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:19:39,472 INFO L82 PathProgramCache]: Analyzing trace with hash -2102107778, now seen corresponding path program 1 times [2020-08-19 00:19:39,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:19:39,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1876462157] [2020-08-19 00:19:39,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:19:39,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:39,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:19:39,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:39,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 00:19:39,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:39,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:39,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:39,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:39,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:39,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:39,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:39,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:39,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:39,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:39,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:39,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:39,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:39,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:39,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:39,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:19:39,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:39,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:39,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:39,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:39,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:39,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-19 00:19:39,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:39,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:39,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:39,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:39,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:39,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-19 00:19:39,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:39,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:39,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:39,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:39,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:39,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:39,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:39,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:39,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:39,895 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 109 proven. 85 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2020-08-19 00:19:39,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1876462157] [2020-08-19 00:19:39,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:19:39,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-19 00:19:39,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127921187] [2020-08-19 00:19:39,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 00:19:39,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:19:39,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 00:19:39,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-08-19 00:19:39,899 INFO L87 Difference]: Start difference. First operand 99 states and 133 transitions. Second operand 11 states. [2020-08-19 00:19:40,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:19:40,180 INFO L93 Difference]: Finished difference Result 188 states and 266 transitions. [2020-08-19 00:19:40,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 00:19:40,182 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 136 [2020-08-19 00:19:40,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:19:40,184 INFO L225 Difference]: With dead ends: 188 [2020-08-19 00:19:40,184 INFO L226 Difference]: Without dead ends: 101 [2020-08-19 00:19:40,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2020-08-19 00:19:40,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-08-19 00:19:40,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 98. [2020-08-19 00:19:40,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-08-19 00:19:40,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 130 transitions. [2020-08-19 00:19:40,201 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 130 transitions. Word has length 136 [2020-08-19 00:19:40,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:19:40,202 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 130 transitions. [2020-08-19 00:19:40,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 00:19:40,202 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 130 transitions. [2020-08-19 00:19:40,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-08-19 00:19:40,206 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:19:40,207 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 11, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:19:40,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-19 00:19:40,207 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:19:40,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:19:40,208 INFO L82 PathProgramCache]: Analyzing trace with hash 677703633, now seen corresponding path program 2 times [2020-08-19 00:19:40,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:19:40,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [783632614] [2020-08-19 00:19:40,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:19:40,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:40,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:19:40,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:40,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 00:19:40,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:40,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:40,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:40,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:40,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:40,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:40,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:40,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:40,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:40,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:40,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:40,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:40,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:40,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:40,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:40,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:19:40,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:40,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:40,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:40,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:40,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:40,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-19 00:19:40,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:40,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:40,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:40,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:40,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:40,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:40,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:40,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:40,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:40,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:40,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:40,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:19:40,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:40,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:40,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:40,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:40,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:40,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-19 00:19:40,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:40,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:40,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:40,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:40,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:40,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:40,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:40,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:40,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:40,678 INFO L134 CoverageAnalysis]: Checked inductivity of 787 backedges. 138 proven. 250 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2020-08-19 00:19:40,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [783632614] [2020-08-19 00:19:40,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:19:40,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-19 00:19:40,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257413170] [2020-08-19 00:19:40,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-19 00:19:40,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:19:40,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-19 00:19:40,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-08-19 00:19:40,683 INFO L87 Difference]: Start difference. First operand 98 states and 130 transitions. Second operand 14 states. [2020-08-19 00:19:41,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:19:41,301 INFO L93 Difference]: Finished difference Result 224 states and 343 transitions. [2020-08-19 00:19:41,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-19 00:19:41,302 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 177 [2020-08-19 00:19:41,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:19:41,305 INFO L225 Difference]: With dead ends: 224 [2020-08-19 00:19:41,305 INFO L226 Difference]: Without dead ends: 131 [2020-08-19 00:19:41,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=131, Invalid=625, Unknown=0, NotChecked=0, Total=756 [2020-08-19 00:19:41,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-08-19 00:19:41,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 114. [2020-08-19 00:19:41,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-19 00:19:41,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 154 transitions. [2020-08-19 00:19:41,317 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 154 transitions. Word has length 177 [2020-08-19 00:19:41,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:19:41,318 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 154 transitions. [2020-08-19 00:19:41,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-19 00:19:41,318 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 154 transitions. [2020-08-19 00:19:41,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-08-19 00:19:41,320 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:19:41,320 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:19:41,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-19 00:19:41,321 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:19:41,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:19:41,321 INFO L82 PathProgramCache]: Analyzing trace with hash 307857833, now seen corresponding path program 3 times [2020-08-19 00:19:41,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:19:41,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1061318775] [2020-08-19 00:19:41,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:19:41,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:41,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:19:41,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:41,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 00:19:41,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:41,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:41,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:41,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:41,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:41,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:41,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:41,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:41,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:41,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:41,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:41,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:41,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:41,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:41,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:41,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:19:41,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:41,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:41,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:41,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:41,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:41,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-19 00:19:41,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:41,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:41,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:41,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:41,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:41,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:41,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:41,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:41,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:41,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 00:19:41,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:41,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:41,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:41,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:41,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:41,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:41,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:41,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:41,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:41,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:41,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:41,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:19:41,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:41,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:41,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:41,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:41,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:41,627 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 45 proven. 260 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2020-08-19 00:19:41,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1061318775] [2020-08-19 00:19:41,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:19:41,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-19 00:19:41,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267617648] [2020-08-19 00:19:41,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 00:19:41,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:19:41,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 00:19:41,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-19 00:19:41,650 INFO L87 Difference]: Start difference. First operand 114 states and 154 transitions. Second operand 11 states. [2020-08-19 00:19:41,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:19:41,964 INFO L93 Difference]: Finished difference Result 244 states and 371 transitions. [2020-08-19 00:19:41,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 00:19:41,965 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 177 [2020-08-19 00:19:41,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:19:41,969 INFO L225 Difference]: With dead ends: 244 [2020-08-19 00:19:41,969 INFO L226 Difference]: Without dead ends: 240 [2020-08-19 00:19:41,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2020-08-19 00:19:41,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-08-19 00:19:41,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 220. [2020-08-19 00:19:41,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-08-19 00:19:41,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 331 transitions. [2020-08-19 00:19:41,992 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 331 transitions. Word has length 177 [2020-08-19 00:19:41,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:19:41,992 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 331 transitions. [2020-08-19 00:19:41,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 00:19:41,993 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 331 transitions. [2020-08-19 00:19:42,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2020-08-19 00:19:42,000 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:19:42,000 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 26, 26, 22, 21, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 8, 8, 8, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:19:42,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-19 00:19:42,001 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:19:42,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:19:42,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1635105538, now seen corresponding path program 4 times [2020-08-19 00:19:42,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:19:42,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1117850557] [2020-08-19 00:19:42,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:19:42,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:42,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:19:42,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:42,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 00:19:42,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:42,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:42,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:42,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:42,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:42,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:42,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:42,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:42,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:42,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:42,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:42,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:42,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:42,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:42,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:42,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:42,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:42,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:19:42,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:42,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:42,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:42,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:42,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:42,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-19 00:19:42,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:42,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:42,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:42,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:42,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:42,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-19 00:19:42,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:42,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:42,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:42,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:42,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:42,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:42,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:42,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:42,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:42,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:42,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:42,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:42,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:42,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:19:42,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:42,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:42,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:42,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:42,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:42,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-19 00:19:42,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:42,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:42,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:42,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:42,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:42,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-08-19 00:19:42,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:42,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:42,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:42,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:42,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:42,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:42,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:42,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:42,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:42,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:42,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:42,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:42,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:42,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:42,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:42,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:19:42,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:42,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:42,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:42,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:42,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:42,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-19 00:19:42,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:42,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:42,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:42,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:42,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:42,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-19 00:19:42,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:42,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:42,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:42,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:42,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:42,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:42,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:42,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:42,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:42,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:42,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:42,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:42,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:42,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:19:42,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:42,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:42,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:42,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:42,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:42,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-19 00:19:42,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:42,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:42,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:42,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:42,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:42,878 INFO L134 CoverageAnalysis]: Checked inductivity of 4041 backedges. 201 proven. 576 refuted. 0 times theorem prover too weak. 3264 trivial. 0 not checked. [2020-08-19 00:19:42,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1117850557] [2020-08-19 00:19:42,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:19:42,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-19 00:19:42,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534935357] [2020-08-19 00:19:42,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 00:19:42,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:19:42,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 00:19:42,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-08-19 00:19:42,881 INFO L87 Difference]: Start difference. First operand 220 states and 331 transitions. Second operand 11 states. [2020-08-19 00:19:43,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:19:43,168 INFO L93 Difference]: Finished difference Result 429 states and 677 transitions. [2020-08-19 00:19:43,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 00:19:43,169 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 380 [2020-08-19 00:19:43,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:19:43,172 INFO L225 Difference]: With dead ends: 429 [2020-08-19 00:19:43,172 INFO L226 Difference]: Without dead ends: 225 [2020-08-19 00:19:43,175 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2020-08-19 00:19:43,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-08-19 00:19:43,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 222. [2020-08-19 00:19:43,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-08-19 00:19:43,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 316 transitions. [2020-08-19 00:19:43,191 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 316 transitions. Word has length 380 [2020-08-19 00:19:43,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:19:43,192 INFO L479 AbstractCegarLoop]: Abstraction has 222 states and 316 transitions. [2020-08-19 00:19:43,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 00:19:43,192 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 316 transitions. [2020-08-19 00:19:43,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-08-19 00:19:43,196 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:19:43,196 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 13, 12, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:19:43,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-19 00:19:43,196 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:19:43,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:19:43,197 INFO L82 PathProgramCache]: Analyzing trace with hash 657587316, now seen corresponding path program 5 times [2020-08-19 00:19:43,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:19:43,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003135962] [2020-08-19 00:19:43,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:19:43,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:43,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:19:43,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:43,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 00:19:43,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:43,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:43,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:43,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:43,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:43,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:43,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:43,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:43,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:43,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:43,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:43,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:43,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:43,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:43,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:43,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:43,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:43,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:19:43,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:43,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:43,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:43,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:43,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:43,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-19 00:19:43,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:43,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:43,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:43,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:43,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:43,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:43,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:43,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:43,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:43,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 00:19:43,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:43,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:43,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:43,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:43,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:43,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:43,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:43,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:43,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:43,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-19 00:19:43,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:43,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:43,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:43,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:43,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:43,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:43,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:43,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:43,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:43,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:43,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:43,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:19:43,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:43,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:43,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:43,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:43,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:43,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1240 backedges. 200 proven. 324 refuted. 0 times theorem prover too weak. 716 trivial. 0 not checked. [2020-08-19 00:19:43,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1003135962] [2020-08-19 00:19:43,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:19:43,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-19 00:19:43,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105512648] [2020-08-19 00:19:43,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-19 00:19:43,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:19:43,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-19 00:19:43,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-08-19 00:19:43,851 INFO L87 Difference]: Start difference. First operand 222 states and 316 transitions. Second operand 14 states. [2020-08-19 00:19:44,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:19:44,455 INFO L93 Difference]: Finished difference Result 454 states and 689 transitions. [2020-08-19 00:19:44,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-19 00:19:44,456 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 218 [2020-08-19 00:19:44,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:19:44,461 INFO L225 Difference]: With dead ends: 454 [2020-08-19 00:19:44,462 INFO L226 Difference]: Without dead ends: 246 [2020-08-19 00:19:44,466 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2020-08-19 00:19:44,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-08-19 00:19:44,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 228. [2020-08-19 00:19:44,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-08-19 00:19:44,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 324 transitions. [2020-08-19 00:19:44,491 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 324 transitions. Word has length 218 [2020-08-19 00:19:44,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:19:44,492 INFO L479 AbstractCegarLoop]: Abstraction has 228 states and 324 transitions. [2020-08-19 00:19:44,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-19 00:19:44,492 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 324 transitions. [2020-08-19 00:19:44,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-08-19 00:19:44,496 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:19:44,496 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 17, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 7, 6, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:19:44,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-19 00:19:44,497 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:19:44,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:19:44,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1614185823, now seen corresponding path program 6 times [2020-08-19 00:19:44,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:19:44,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1915045332] [2020-08-19 00:19:44,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:19:44,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:44,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:19:44,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:44,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 00:19:44,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:44,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:44,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:44,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:44,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:44,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:44,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:44,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:44,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:44,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:44,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:44,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:44,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:44,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:44,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:44,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:44,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:44,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:19:44,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:44,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:44,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:44,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:44,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:44,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-19 00:19:44,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:44,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:44,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:44,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:44,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:44,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:44,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:44,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:44,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:44,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 00:19:44,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:44,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:44,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:44,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:44,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:44,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:44,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:44,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:44,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:44,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:44,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:44,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:19:44,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:44,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:44,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:44,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:44,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:44,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-19 00:19:45,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:45,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:45,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:45,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:45,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:45,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:45,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:45,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:45,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:45,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:45,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:45,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:45,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:45,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:19:45,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:45,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:45,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:45,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:45,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:45,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-19 00:19:45,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:45,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:45,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:45,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:45,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:45,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:45,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:45,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:45,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:45,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2216 backedges. 94 proven. 558 refuted. 0 times theorem prover too weak. 1564 trivial. 0 not checked. [2020-08-19 00:19:45,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1915045332] [2020-08-19 00:19:45,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:19:45,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 00:19:45,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549667572] [2020-08-19 00:19:45,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 00:19:45,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:19:45,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 00:19:45,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-19 00:19:45,152 INFO L87 Difference]: Start difference. First operand 228 states and 324 transitions. Second operand 12 states. [2020-08-19 00:19:45,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:19:45,553 INFO L93 Difference]: Finished difference Result 487 states and 755 transitions. [2020-08-19 00:19:45,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-19 00:19:45,554 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 286 [2020-08-19 00:19:45,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:19:45,573 INFO L225 Difference]: With dead ends: 487 [2020-08-19 00:19:45,574 INFO L226 Difference]: Without dead ends: 483 [2020-08-19 00:19:45,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2020-08-19 00:19:45,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2020-08-19 00:19:45,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 463. [2020-08-19 00:19:45,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 463 states. [2020-08-19 00:19:45,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 717 transitions. [2020-08-19 00:19:45,617 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 717 transitions. Word has length 286 [2020-08-19 00:19:45,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:19:45,618 INFO L479 AbstractCegarLoop]: Abstraction has 463 states and 717 transitions. [2020-08-19 00:19:45,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 00:19:45,618 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 717 transitions. [2020-08-19 00:19:45,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2020-08-19 00:19:45,625 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:19:45,625 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 24, 22, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 10, 8, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:19:45,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-19 00:19:45,626 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:19:45,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:19:45,626 INFO L82 PathProgramCache]: Analyzing trace with hash 2114796199, now seen corresponding path program 7 times [2020-08-19 00:19:45,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:19:45,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [447002878] [2020-08-19 00:19:45,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:19:45,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:45,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:19:45,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:45,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 00:19:45,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:45,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:45,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:45,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:45,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:45,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:45,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:46,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:46,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:46,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:46,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:46,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:46,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:46,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:46,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:46,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:46,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:46,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:46,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:46,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:19:46,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:46,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:46,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:46,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:46,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:46,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-19 00:19:46,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:46,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:46,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:46,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:46,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:46,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:46,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:46,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:46,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:46,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 00:19:46,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:46,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:46,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:46,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:46,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:46,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:46,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:46,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:46,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:46,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-19 00:19:46,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:46,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:46,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:46,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:46,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:46,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:46,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:46,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:46,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:46,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:46,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:46,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:19:46,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:46,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:46,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:46,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:46,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:46,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-08-19 00:19:46,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:46,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:46,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:46,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:46,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:46,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:46,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:46,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:46,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:46,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:46,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:46,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:46,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:46,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:46,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:46,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:19:46,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:46,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:46,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:46,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:46,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:46,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-19 00:19:46,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:46,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:46,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:46,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:46,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:46,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:46,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:46,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:46,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:46,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 00:19:46,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:46,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:46,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:46,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:46,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:46,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:46,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:46,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:46,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:46,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:46,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:46,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:19:46,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:46,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:46,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:46,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:46,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:46,809 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 289 proven. 900 refuted. 0 times theorem prover too weak. 3182 trivial. 0 not checked. [2020-08-19 00:19:46,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [447002878] [2020-08-19 00:19:46,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:19:46,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-19 00:19:46,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529600939] [2020-08-19 00:19:46,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-19 00:19:46,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:19:46,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-19 00:19:46,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-08-19 00:19:46,811 INFO L87 Difference]: Start difference. First operand 463 states and 717 transitions. Second operand 14 states. [2020-08-19 00:19:47,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:19:47,340 INFO L93 Difference]: Finished difference Result 978 states and 1610 transitions. [2020-08-19 00:19:47,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-19 00:19:47,341 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 395 [2020-08-19 00:19:47,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:19:47,353 INFO L225 Difference]: With dead ends: 978 [2020-08-19 00:19:47,353 INFO L226 Difference]: Without dead ends: 529 [2020-08-19 00:19:47,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2020-08-19 00:19:47,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-08-19 00:19:47,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 502. [2020-08-19 00:19:47,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 502 states. [2020-08-19 00:19:47,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 738 transitions. [2020-08-19 00:19:47,431 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 738 transitions. Word has length 395 [2020-08-19 00:19:47,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:19:47,432 INFO L479 AbstractCegarLoop]: Abstraction has 502 states and 738 transitions. [2020-08-19 00:19:47,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-19 00:19:47,432 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 738 transitions. [2020-08-19 00:19:47,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 668 [2020-08-19 00:19:47,449 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:19:47,450 INFO L422 BasicCegarLoop]: trace histogram [49, 49, 48, 48, 40, 38, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 16, 14, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:19:47,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-19 00:19:47,450 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:19:47,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:19:47,451 INFO L82 PathProgramCache]: Analyzing trace with hash -85106141, now seen corresponding path program 8 times [2020-08-19 00:19:47,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:19:47,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308083614] [2020-08-19 00:19:47,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:19:47,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:47,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:19:47,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:47,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 00:19:47,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:48,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:48,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:48,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:48,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:48,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:48,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:48,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:48,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:48,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:19:48,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:48,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:48,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-19 00:19:48,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:48,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:48,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:48,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:48,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 00:19:48,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:48,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:48,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:48,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:48,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:48,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:19:48,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:48,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:48,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-19 00:19:48,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:48,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:48,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:48,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:48,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:48,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:19:48,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:48,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:48,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-19 00:19:48,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:48,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:48,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:48,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:48,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:48,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:48,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:48,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:48,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:48,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:19:48,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:48,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:48,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-19 00:19:48,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:48,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:48,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:48,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:48,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 00:19:48,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:48,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:48,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:48,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:48,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:48,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:19:48,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:48,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:48,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-19 00:19:48,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:48,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:48,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:48,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:48,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:48,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:48,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:48,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:19:48,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:48,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:48,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-19 00:19:48,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:48,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:48,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:48,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:48,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:48,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:49,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 00:19:49,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:49,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:49,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:49,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:49,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:49,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:49,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:49,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:49,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:49,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:49,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:49,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:19:49,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:49,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:49,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:49,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:49,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:49,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2020-08-19 00:19:49,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:49,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:49,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:49,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:49,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:49,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:49,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:49,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:49,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:49,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:49,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:49,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:19:49,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:49,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:49,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:49,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:49,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:49,752 INFO L134 CoverageAnalysis]: Checked inductivity of 12907 backedges. 478 proven. 2018 refuted. 0 times theorem prover too weak. 10411 trivial. 0 not checked. [2020-08-19 00:19:49,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308083614] [2020-08-19 00:19:49,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:19:49,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-19 00:19:49,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145214140] [2020-08-19 00:19:49,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 00:19:49,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:19:49,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 00:19:49,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-08-19 00:19:49,755 INFO L87 Difference]: Start difference. First operand 502 states and 738 transitions. Second operand 16 states. [2020-08-19 00:19:50,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:19:50,417 INFO L93 Difference]: Finished difference Result 1138 states and 1852 transitions. [2020-08-19 00:19:50,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-19 00:19:50,418 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 667 [2020-08-19 00:19:50,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:19:50,429 INFO L225 Difference]: With dead ends: 1138 [2020-08-19 00:19:50,429 INFO L226 Difference]: Without dead ends: 650 [2020-08-19 00:19:50,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=132, Invalid=738, Unknown=0, NotChecked=0, Total=870 [2020-08-19 00:19:50,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2020-08-19 00:19:50,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 570. [2020-08-19 00:19:50,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 570 states. [2020-08-19 00:19:50,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 855 transitions. [2020-08-19 00:19:50,501 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 855 transitions. Word has length 667 [2020-08-19 00:19:50,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:19:50,504 INFO L479 AbstractCegarLoop]: Abstraction has 570 states and 855 transitions. [2020-08-19 00:19:50,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-19 00:19:50,504 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 855 transitions. [2020-08-19 00:19:50,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 709 [2020-08-19 00:19:50,515 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:19:50,515 INFO L422 BasicCegarLoop]: trace histogram [53, 53, 50, 50, 42, 41, 26, 26, 26, 26, 26, 26, 26, 25, 25, 25, 25, 25, 25, 25, 16, 16, 12, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:19:50,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-19 00:19:50,516 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:19:50,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:19:50,516 INFO L82 PathProgramCache]: Analyzing trace with hash 792643710, now seen corresponding path program 9 times [2020-08-19 00:19:50,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:19:50,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [445155830] [2020-08-19 00:19:50,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:19:50,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:50,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:19:50,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:50,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 00:19:50,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:51,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:51,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:51,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:51,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:51,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:51,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:51,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:51,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:51,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:51,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:51,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:51,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:51,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:51,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:51,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:51,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:51,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:51,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:51,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:19:51,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:51,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:51,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:51,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:51,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:51,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-19 00:19:51,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:51,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:51,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:51,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:51,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:51,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:51,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:51,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:51,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:51,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 00:19:51,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:51,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:51,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:51,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:51,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:51,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:51,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:51,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:51,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:51,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:51,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:51,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:19:51,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:51,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:51,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:51,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:51,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:51,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-19 00:19:51,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:51,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:51,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:51,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:51,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:51,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:51,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:51,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:51,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:51,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:51,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:51,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:51,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:51,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:51,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:51,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:19:51,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:51,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:51,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:51,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:51,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:51,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-19 00:19:51,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:51,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:51,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:51,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:51,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:51,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:51,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:51,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:51,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:51,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 00:19:51,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:51,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:51,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:51,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:51,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:51,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:51,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:51,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:51,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:51,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:51,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:51,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:19:51,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:51,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:51,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:51,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:51,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:51,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2020-08-19 00:19:51,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:51,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:51,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:52,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:52,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:52,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:52,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:52,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:52,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:52,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:52,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:52,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:52,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:52,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:52,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:52,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:52,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:52,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:19:52,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:52,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:52,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:52,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:52,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:52,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-19 00:19:52,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:52,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:52,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:52,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:52,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:52,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:52,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:52,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:52,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:52,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 00:19:52,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:52,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:52,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:52,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:52,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:52,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:52,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:52,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:52,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:52,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:52,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:52,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:19:52,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:52,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:52,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:52,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:52,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:52,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-19 00:19:52,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:52,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:52,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:52,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:52,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:52,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:52,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:52,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:52,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:52,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:52,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:52,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:52,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:52,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:52,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:52,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:19:52,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:52,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:52,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:52,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:52,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:52,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-19 00:19:52,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:52,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:52,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:52,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:52,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:52,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:52,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:52,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:52,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:52,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 00:19:52,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:52,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:52,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:52,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:52,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:52,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:52,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:52,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:52,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:52,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:52,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:52,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:19:52,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:52,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:52,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:52,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:52,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:52,822 INFO L134 CoverageAnalysis]: Checked inductivity of 14593 backedges. 618 proven. 2526 refuted. 0 times theorem prover too weak. 11449 trivial. 0 not checked. [2020-08-19 00:19:52,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [445155830] [2020-08-19 00:19:52,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:19:52,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-19 00:19:52,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677323260] [2020-08-19 00:19:52,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-19 00:19:52,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:19:52,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-19 00:19:52,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2020-08-19 00:19:52,825 INFO L87 Difference]: Start difference. First operand 570 states and 855 transitions. Second operand 18 states. [2020-08-19 00:19:53,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:19:53,969 INFO L93 Difference]: Finished difference Result 1028 states and 1719 transitions. [2020-08-19 00:19:53,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-08-19 00:19:53,970 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 708 [2020-08-19 00:19:53,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:19:53,977 INFO L225 Difference]: With dead ends: 1028 [2020-08-19 00:19:53,978 INFO L226 Difference]: Without dead ends: 456 [2020-08-19 00:19:53,984 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=250, Invalid=1472, Unknown=0, NotChecked=0, Total=1722 [2020-08-19 00:19:53,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2020-08-19 00:19:54,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 371. [2020-08-19 00:19:54,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2020-08-19 00:19:54,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 534 transitions. [2020-08-19 00:19:54,016 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 534 transitions. Word has length 708 [2020-08-19 00:19:54,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:19:54,018 INFO L479 AbstractCegarLoop]: Abstraction has 371 states and 534 transitions. [2020-08-19 00:19:54,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-19 00:19:54,018 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 534 transitions. [2020-08-19 00:19:54,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2020-08-19 00:19:54,021 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:19:54,021 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 23, 23, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 9, 9, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:19:54,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-19 00:19:54,022 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:19:54,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:19:54,022 INFO L82 PathProgramCache]: Analyzing trace with hash 634662915, now seen corresponding path program 10 times [2020-08-19 00:19:54,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:19:54,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [992657315] [2020-08-19 00:19:54,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:19:54,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:54,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:19:54,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:54,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 00:19:54,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:54,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:54,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:54,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:54,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:54,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:54,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:54,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:54,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:54,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:54,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:54,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:54,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:54,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:54,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:54,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:54,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:54,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:54,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:54,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:19:54,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:54,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:54,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:54,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:54,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:54,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-19 00:19:54,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:54,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:54,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:54,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:54,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:54,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:54,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:54,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:54,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:54,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 00:19:54,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:54,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:54,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:54,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:54,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:54,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:54,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:54,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:54,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:54,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:54,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:54,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:19:54,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:54,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:54,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:54,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:54,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:54,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-19 00:19:54,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:54,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:54,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:54,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:54,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:54,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:54,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:54,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:54,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:54,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:54,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:54,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:54,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:54,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:19:54,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:54,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:54,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:54,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:54,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:54,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-19 00:19:54,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:54,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:54,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:54,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:54,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:54,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:54,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:54,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:54,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:54,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-08-19 00:19:54,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:54,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:54,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:54,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:54,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:54,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:54,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:54,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:54,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:54,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:54,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:54,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:54,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:54,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:19:54,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:54,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:54,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:54,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:54,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:54,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-19 00:19:54,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:54,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:54,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:54,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:54,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:54,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:54,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:54,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:54,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:55,095 INFO L134 CoverageAnalysis]: Checked inductivity of 4370 backedges. 694 proven. 802 refuted. 0 times theorem prover too weak. 2874 trivial. 0 not checked. [2020-08-19 00:19:55,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [992657315] [2020-08-19 00:19:55,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:19:55,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-19 00:19:55,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746625654] [2020-08-19 00:19:55,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-19 00:19:55,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:19:55,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-19 00:19:55,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2020-08-19 00:19:55,099 INFO L87 Difference]: Start difference. First operand 371 states and 534 transitions. Second operand 18 states. [2020-08-19 00:19:56,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:19:56,035 INFO L93 Difference]: Finished difference Result 819 states and 1289 transitions. [2020-08-19 00:19:56,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-08-19 00:19:56,036 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 395 [2020-08-19 00:19:56,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:19:56,044 INFO L225 Difference]: With dead ends: 819 [2020-08-19 00:19:56,044 INFO L226 Difference]: Without dead ends: 462 [2020-08-19 00:19:56,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=196, Invalid=1210, Unknown=0, NotChecked=0, Total=1406 [2020-08-19 00:19:56,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2020-08-19 00:19:56,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 395. [2020-08-19 00:19:56,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2020-08-19 00:19:56,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 579 transitions. [2020-08-19 00:19:56,081 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 579 transitions. Word has length 395 [2020-08-19 00:19:56,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:19:56,082 INFO L479 AbstractCegarLoop]: Abstraction has 395 states and 579 transitions. [2020-08-19 00:19:56,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-19 00:19:56,082 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 579 transitions. [2020-08-19 00:19:56,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 573 [2020-08-19 00:19:56,087 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:19:56,087 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 41, 41, 34, 33, 21, 21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 20, 20, 14, 12, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:19:56,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-08-19 00:19:56,088 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:19:56,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:19:56,088 INFO L82 PathProgramCache]: Analyzing trace with hash 2122481566, now seen corresponding path program 11 times [2020-08-19 00:19:56,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:19:56,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [328800648] [2020-08-19 00:19:56,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:19:56,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:56,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:19:56,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:56,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 00:19:56,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:56,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:56,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:56,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:56,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:56,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:56,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:56,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:56,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:56,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:56,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:56,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:56,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:56,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:56,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:56,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:56,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:56,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:56,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:56,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:19:56,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:56,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:56,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:56,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:56,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:56,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-19 00:19:56,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:56,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:56,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:56,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:56,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:56,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:56,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:56,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:56,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:56,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 00:19:56,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:56,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:56,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:56,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:56,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:56,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:56,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:56,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:56,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:56,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:56,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:56,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:19:56,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:56,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:56,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:56,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:56,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:56,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-19 00:19:56,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:56,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:56,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:56,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:56,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:56,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:56,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:56,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:56,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:56,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:56,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:56,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:56,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:56,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:19:56,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:56,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:56,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:56,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:56,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:56,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-19 00:19:56,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:56,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:56,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:56,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:56,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:56,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:56,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:56,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:56,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:57,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-08-19 00:19:57,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:57,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:57,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:57,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:57,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:57,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:57,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:57,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:57,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:57,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:57,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:57,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:57,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:57,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:57,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:57,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:57,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:57,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:19:57,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:57,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:57,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:57,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:57,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:57,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-19 00:19:57,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:57,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:57,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:57,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:57,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:57,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:57,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:57,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:57,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:57,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 00:19:57,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:57,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:57,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:57,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:57,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:57,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:57,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:57,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:57,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:57,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:57,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:57,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:19:57,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:57,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:57,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:57,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:57,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:57,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-19 00:19:57,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:57,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:57,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:57,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:57,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:57,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:57,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:57,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:57,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:57,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:57,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:57,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:57,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:57,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:19:57,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:57,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:57,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:57,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:57,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:57,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-19 00:19:57,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:57,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:57,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:57,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 00:19:57,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:57,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:19:57,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:57,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:19:57,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:19:57,748 INFO L134 CoverageAnalysis]: Checked inductivity of 9413 backedges. 913 proven. 1781 refuted. 0 times theorem prover too weak. 6719 trivial. 0 not checked. [2020-08-19 00:19:57,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [328800648] [2020-08-19 00:19:57,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:19:57,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-08-19 00:19:57,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129028397] [2020-08-19 00:19:57,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-08-19 00:19:57,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:19:57,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-08-19 00:19:57,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2020-08-19 00:19:57,751 INFO L87 Difference]: Start difference. First operand 395 states and 579 transitions. Second operand 20 states. [2020-08-19 00:19:59,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:19:59,110 INFO L93 Difference]: Finished difference Result 662 states and 1053 transitions. [2020-08-19 00:19:59,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-08-19 00:19:59,112 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 572 [2020-08-19 00:19:59,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:19:59,117 INFO L225 Difference]: With dead ends: 662 [2020-08-19 00:19:59,117 INFO L226 Difference]: Without dead ends: 230 [2020-08-19 00:19:59,121 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=333, Invalid=2117, Unknown=0, NotChecked=0, Total=2450 [2020-08-19 00:19:59,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-08-19 00:19:59,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 183. [2020-08-19 00:19:59,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-08-19 00:19:59,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 260 transitions. [2020-08-19 00:19:59,136 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 260 transitions. Word has length 572 [2020-08-19 00:19:59,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:19:59,137 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 260 transitions. [2020-08-19 00:19:59,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-08-19 00:19:59,137 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 260 transitions. [2020-08-19 00:19:59,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2020-08-19 00:19:59,141 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:19:59,141 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 27, 27, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 11, 10, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:19:59,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-08-19 00:19:59,142 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:19:59,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:19:59,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1326629730, now seen corresponding path program 12 times [2020-08-19 00:19:59,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:19:59,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [455201049] [2020-08-19 00:19:59,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:19:59,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 00:19:59,246 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 00:19:59,246 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 00:19:59,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-08-19 00:19:59,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 12:19:59 BoogieIcfgContainer [2020-08-19 00:19:59,347 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 00:19:59,349 INFO L168 Benchmark]: Toolchain (without parser) took 26341.49 ms. Allocated memory was 139.5 MB in the beginning and 936.9 MB in the end (delta: 797.4 MB). Free memory was 102.3 MB in the beginning and 777.0 MB in the end (delta: -674.7 MB). Peak memory consumption was 122.7 MB. Max. memory is 7.1 GB. [2020-08-19 00:19:59,350 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 00:19:59,351 INFO L168 Benchmark]: CACSL2BoogieTranslator took 368.72 ms. Allocated memory is still 139.5 MB. Free memory was 102.1 MB in the beginning and 92.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-08-19 00:19:59,351 INFO L168 Benchmark]: Boogie Preprocessor took 204.48 ms. Allocated memory was 139.5 MB in the beginning and 207.1 MB in the end (delta: 67.6 MB). Free memory was 92.4 MB in the beginning and 185.7 MB in the end (delta: -93.3 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-08-19 00:19:59,352 INFO L168 Benchmark]: RCFGBuilder took 284.94 ms. Allocated memory is still 207.1 MB. Free memory was 185.7 MB in the beginning and 172.4 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2020-08-19 00:19:59,356 INFO L168 Benchmark]: TraceAbstraction took 25478.22 ms. Allocated memory was 207.1 MB in the beginning and 936.9 MB in the end (delta: 729.8 MB). Free memory was 171.7 MB in the beginning and 777.0 MB in the end (delta: -605.3 MB). Peak memory consumption was 124.5 MB. Max. memory is 7.1 GB. [2020-08-19 00:19:59,360 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 368.72 ms. Allocated memory is still 139.5 MB. Free memory was 102.1 MB in the beginning and 92.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 204.48 ms. Allocated memory was 139.5 MB in the beginning and 207.1 MB in the end (delta: 67.6 MB). Free memory was 92.4 MB in the beginning and 185.7 MB in the end (delta: -93.3 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 284.94 ms. Allocated memory is still 207.1 MB. Free memory was 185.7 MB in the beginning and 172.4 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 25478.22 ms. Allocated memory was 207.1 MB in the beginning and 936.9 MB in the end (delta: 729.8 MB). Free memory was 171.7 MB in the beginning and 777.0 MB in the end (delta: -605.3 MB). Peak memory consumption was 124.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 39]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L36] int x = 8; [L37] CALL, EXPR fibo1(x) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND TRUE n == 1 [L21] return 1; [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND TRUE n < 1 [L19] return 0; [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND TRUE n < 1 [L9] return 0; [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND TRUE n < 1 [L9] return 0; [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND FALSE !(n < 1) [L20] COND TRUE n == 1 [L21] return 1; [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND TRUE n < 1 [L9] return 0; [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND FALSE !(n < 1) [L20] COND TRUE n == 1 [L21] return 1; [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND TRUE n == 1 [L21] return 1; [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND TRUE n < 1 [L19] return 0; [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND TRUE n < 1 [L9] return 0; [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND FALSE !(n < 1) [L20] COND TRUE n == 1 [L21] return 1; [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND TRUE n == 1 [L21] return 1; [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND TRUE n < 1 [L19] return 0; [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND TRUE n == 1 [L21] return 1; [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND TRUE n < 1 [L19] return 0; [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND TRUE n < 1 [L9] return 0; [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND FALSE !(n < 1) [L20] COND TRUE n == 1 [L21] return 1; [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND TRUE n == 1 [L21] return 1; [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND TRUE n < 1 [L19] return 0; [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND TRUE n == 1 [L21] return 1; [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND TRUE n < 1 [L19] return 0; [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND TRUE n == 1 [L21] return 1; [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND TRUE n < 1 [L19] return 0; [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND TRUE n < 1 [L9] return 0; [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L37] RET, EXPR fibo1(x) [L37] int result = fibo1(x); [L38] COND TRUE result == 21 [L39] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 25.3s, OverallIterations: 24, TraceHistogramMax: 53, AutomataDifference: 9.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 763 SDtfs, 1001 SDslu, 4623 SDs, 0 SdLazy, 6731 SolverSat, 852 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1876 GetRequests, 1469 SyntacticMatches, 0 SemanticMatches, 407 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1996 ImplicationChecksByTransitivity, 4.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=570occurred in iteration=20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 23 MinimizatonAttempts, 441 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 12.4s InterpolantComputationTime, 5267 NumberOfCodeBlocks, 5267 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 4781 ConstructedInterpolants, 0 QuantifiedInterpolants, 2633633 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 23 InterpolantComputations, 2 PerfectInterpolantSequences, 46095/56717 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 incorrect! Received shutdown request...