/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_7-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 22:09:57,866 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 22:09:57,872 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 22:09:57,896 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 22:09:57,897 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 22:09:57,898 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 22:09:57,899 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 22:09:57,901 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 22:09:57,903 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 22:09:57,903 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 22:09:57,904 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 22:09:57,905 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 22:09:57,906 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 22:09:57,907 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 22:09:57,908 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 22:09:57,909 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 22:09:57,910 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 22:09:57,910 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 22:09:57,912 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 22:09:57,914 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 22:09:57,915 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 22:09:57,916 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 22:09:57,917 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 22:09:57,918 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 22:09:57,920 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-21 22:09:57,931 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 22:09:57,932 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 22:09:57,932 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 22:09:57,938 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 [2020-08-21 22:09:57,985 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 22:09:57,985 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 22:09:57,987 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 22:09:57,987 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 22:09:57,987 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 22:09:57,988 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 22:09:57,989 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 22:09:57,989 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 22:09:57,989 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 22:09:57,990 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 22:09:57,990 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 22:09:57,990 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 22:09:57,990 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 22:09:57,991 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 22:09:57,991 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 22:09:57,991 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 22:09:57,991 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 22:09:57,991 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 22:09:57,992 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 22:09:57,992 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 22:09:57,992 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 22:09:57,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:09:57,992 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 22:09:57,995 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 22:09:57,995 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 22:09:57,995 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 22:09:57,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 22:09:57,995 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 22:09:57,996 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 22:09:57,996 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=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; [2020-08-21 22:09:58,342 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 22:09:58,356 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 22:09:58,360 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 22:09:58,362 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 22:09:58,362 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 22:09:58,363 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_7-1.c [2020-08-21 22:09:58,431 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/05937e28e/284cb8da66bb4d398ac6f1256329dfa2/FLAG0a892975b [2020-08-21 22:09:58,882 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 22:09:58,882 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_7-1.c [2020-08-21 22:09:58,890 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/05937e28e/284cb8da66bb4d398ac6f1256329dfa2/FLAG0a892975b [2020-08-21 22:09:59,313 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/05937e28e/284cb8da66bb4d398ac6f1256329dfa2 [2020-08-21 22:09:59,324 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 22:09:59,326 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 22:09:59,328 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 22:09:59,328 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 22:09:59,332 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 22:09:59,333 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:09:59" (1/1) ... [2020-08-21 22:09:59,336 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bb1485c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:09:59, skipping insertion in model container [2020-08-21 22:09:59,336 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:09:59" (1/1) ... [2020-08-21 22:09:59,345 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 22:09:59,364 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 22:09:59,580 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:09:59,587 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 22:09:59,613 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:09:59,631 INFO L208 MainTranslator]: Completed translation [2020-08-21 22:09:59,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:09:59 WrapperNode [2020-08-21 22:09:59,633 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 22:09:59,634 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 22:09:59,634 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 22:09:59,634 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 22:09:59,649 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:09:59" (1/1) ... [2020-08-21 22:09:59,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:09:59" (1/1) ... [2020-08-21 22:09:59,659 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:09:59" (1/1) ... [2020-08-21 22:09:59,660 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:09:59" (1/1) ... [2020-08-21 22:09:59,664 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:09:59" (1/1) ... [2020-08-21 22:09:59,668 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:09:59" (1/1) ... [2020-08-21 22:09:59,669 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:09:59" (1/1) ... [2020-08-21 22:09:59,671 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 22:09:59,672 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 22:09:59,672 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 22:09:59,673 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 22:09:59,674 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:09:59" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:09:59,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 22:09:59,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 22:09:59,827 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-08-21 22:09:59,827 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 22:09:59,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 22:09:59,828 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 22:09:59,828 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-08-21 22:09:59,828 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 22:09:59,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 22:09:59,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 22:10:00,002 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 22:10:00,003 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-21 22:10:00,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:10:00 BoogieIcfgContainer [2020-08-21 22:10:00,007 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 22:10:00,008 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 22:10:00,008 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 22:10:00,012 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 22:10:00,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 10:09:59" (1/3) ... [2020-08-21 22:10:00,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@589801d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:10:00, skipping insertion in model container [2020-08-21 22:10:00,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:09:59" (2/3) ... [2020-08-21 22:10:00,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@589801d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:10:00, skipping insertion in model container [2020-08-21 22:10:00,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:10:00" (3/3) ... [2020-08-21 22:10:00,016 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_7-1.c [2020-08-21 22:10:00,027 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 22:10:00,034 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 22:10:00,049 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 22:10:00,075 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 22:10:00,075 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 22:10:00,076 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 22:10:00,076 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 22:10:00,076 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 22:10:00,076 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 22:10:00,076 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 22:10:00,076 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 22:10:00,094 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-08-21 22:10:00,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-21 22:10:00,101 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:10:00,102 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:10:00,102 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:10:00,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:10:00,108 INFO L82 PathProgramCache]: Analyzing trace with hash 537028541, now seen corresponding path program 1 times [2020-08-21 22:10:00,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:10:00,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610258598] [2020-08-21 22:10:00,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:10:00,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:00,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:10:00,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:00,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 22:10:00,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:00,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:10:00,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1610258598] [2020-08-21 22:10:00,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:10:00,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 22:10:00,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730062403] [2020-08-21 22:10:00,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 22:10:00,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:10:00,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 22:10:00,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:10:00,377 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-08-21 22:10:00,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:10:00,486 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2020-08-21 22:10:00,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 22:10:00,489 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-08-21 22:10:00,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:10:00,502 INFO L225 Difference]: With dead ends: 35 [2020-08-21 22:10:00,503 INFO L226 Difference]: Without dead ends: 21 [2020-08-21 22:10:00,506 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 [2020-08-21 22:10:00,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-08-21 22:10:00,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-08-21 22:10:00,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-08-21 22:10:00,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2020-08-21 22:10:00,574 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 13 [2020-08-21 22:10:00,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:10:00,575 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2020-08-21 22:10:00,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 22:10:00,575 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2020-08-21 22:10:00,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-21 22:10:00,578 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:10:00,578 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:10:00,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 22:10:00,579 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:10:00,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:10:00,579 INFO L82 PathProgramCache]: Analyzing trace with hash 179123823, now seen corresponding path program 1 times [2020-08-21 22:10:00,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:10:00,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1584777230] [2020-08-21 22:10:00,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:10:00,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:00,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:10:00,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:00,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 22:10:00,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:00,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:10:00,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1584777230] [2020-08-21 22:10:00,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:10:00,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 22:10:00,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884961945] [2020-08-21 22:10:00,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 22:10:00,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:10:00,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 22:10:00,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:10:00,652 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 5 states. [2020-08-21 22:10:00,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:10:00,719 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2020-08-21 22:10:00,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 22:10:00,720 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-08-21 22:10:00,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:10:00,722 INFO L225 Difference]: With dead ends: 27 [2020-08-21 22:10:00,722 INFO L226 Difference]: Without dead ends: 23 [2020-08-21 22:10:00,723 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 [2020-08-21 22:10:00,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-08-21 22:10:00,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2020-08-21 22:10:00,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-08-21 22:10:00,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2020-08-21 22:10:00,734 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 14 [2020-08-21 22:10:00,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:10:00,735 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2020-08-21 22:10:00,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 22:10:00,736 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2020-08-21 22:10:00,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-21 22:10:00,737 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:10:00,737 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:10:00,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 22:10:00,740 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:10:00,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:10:00,742 INFO L82 PathProgramCache]: Analyzing trace with hash 806022394, now seen corresponding path program 1 times [2020-08-21 22:10:00,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:10:00,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826096371] [2020-08-21 22:10:00,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:10:00,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:00,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:10:00,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:00,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 22:10:00,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:00,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:00,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:00,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:10:00,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:00,902 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 22:10:00,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1826096371] [2020-08-21 22:10:00,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:10:00,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-21 22:10:00,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594575135] [2020-08-21 22:10:00,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 22:10:00,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:10:00,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 22:10:00,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-21 22:10:00,905 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 7 states. [2020-08-21 22:10:01,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:10:01,010 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2020-08-21 22:10:01,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 22:10:01,011 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-08-21 22:10:01,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:10:01,013 INFO L225 Difference]: With dead ends: 38 [2020-08-21 22:10:01,013 INFO L226 Difference]: Without dead ends: 23 [2020-08-21 22:10:01,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-08-21 22:10:01,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-08-21 22:10:01,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-08-21 22:10:01,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-08-21 22:10:01,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-08-21 22:10:01,024 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 26 [2020-08-21 22:10:01,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:10:01,024 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-08-21 22:10:01,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 22:10:01,025 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-08-21 22:10:01,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-21 22:10:01,027 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:10:01,029 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:10:01,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 22:10:01,030 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:10:01,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:10:01,031 INFO L82 PathProgramCache]: Analyzing trace with hash -983862936, now seen corresponding path program 1 times [2020-08-21 22:10:01,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:10:01,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743402635] [2020-08-21 22:10:01,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:10:01,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:01,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:10:01,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:01,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 22:10:01,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:01,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:01,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:01,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:10:01,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:01,196 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-21 22:10:01,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743402635] [2020-08-21 22:10:01,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:10:01,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-21 22:10:01,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708855598] [2020-08-21 22:10:01,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 22:10:01,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:10:01,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 22:10:01,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 22:10:01,200 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 6 states. [2020-08-21 22:10:01,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:10:01,333 INFO L93 Difference]: Finished difference Result 41 states and 55 transitions. [2020-08-21 22:10:01,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 22:10:01,333 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-08-21 22:10:01,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:10:01,336 INFO L225 Difference]: With dead ends: 41 [2020-08-21 22:10:01,336 INFO L226 Difference]: Without dead ends: 37 [2020-08-21 22:10:01,337 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-08-21 22:10:01,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-08-21 22:10:01,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-08-21 22:10:01,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-08-21 22:10:01,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2020-08-21 22:10:01,350 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 51 transitions. Word has length 27 [2020-08-21 22:10:01,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:10:01,350 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 51 transitions. [2020-08-21 22:10:01,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 22:10:01,350 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 51 transitions. [2020-08-21 22:10:01,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-21 22:10:01,353 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:10:01,353 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:10:01,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 22:10:01,353 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:10:01,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:10:01,354 INFO L82 PathProgramCache]: Analyzing trace with hash 146085807, now seen corresponding path program 2 times [2020-08-21 22:10:01,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:10:01,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641705133] [2020-08-21 22:10:01,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:10:01,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:01,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:10:01,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:01,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 22:10:01,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:01,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:01,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:01,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:01,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:01,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:10:01,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:01,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 22:10:01,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:01,527 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-21 22:10:01,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1641705133] [2020-08-21 22:10:01,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:10:01,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-21 22:10:01,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428892972] [2020-08-21 22:10:01,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 22:10:01,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:10:01,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 22:10:01,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 22:10:01,530 INFO L87 Difference]: Start difference. First operand 37 states and 51 transitions. Second operand 8 states. [2020-08-21 22:10:01,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:10:01,699 INFO L93 Difference]: Finished difference Result 79 states and 124 transitions. [2020-08-21 22:10:01,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 22:10:01,702 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2020-08-21 22:10:01,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:10:01,709 INFO L225 Difference]: With dead ends: 79 [2020-08-21 22:10:01,709 INFO L226 Difference]: Without dead ends: 48 [2020-08-21 22:10:01,711 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-08-21 22:10:01,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-21 22:10:01,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2020-08-21 22:10:01,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-08-21 22:10:01,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 57 transitions. [2020-08-21 22:10:01,745 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 57 transitions. Word has length 40 [2020-08-21 22:10:01,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:10:01,746 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 57 transitions. [2020-08-21 22:10:01,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 22:10:01,746 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 57 transitions. [2020-08-21 22:10:01,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-08-21 22:10:01,751 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:10:01,751 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:10:01,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 22:10:01,755 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:10:01,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:10:01,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1111873851, now seen corresponding path program 3 times [2020-08-21 22:10:01,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:10:01,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [199286488] [2020-08-21 22:10:01,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:10:01,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:01,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:10:01,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:01,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 22:10:01,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:01,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:01,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:01,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:01,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:01,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:10:01,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:01,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 22:10:01,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:01,905 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-08-21 22:10:01,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [199286488] [2020-08-21 22:10:01,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:10:01,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-21 22:10:01,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933287352] [2020-08-21 22:10:01,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 22:10:01,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:10:01,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 22:10:01,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-21 22:10:01,909 INFO L87 Difference]: Start difference. First operand 42 states and 57 transitions. Second operand 7 states. [2020-08-21 22:10:02,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:10:02,037 INFO L93 Difference]: Finished difference Result 65 states and 93 transitions. [2020-08-21 22:10:02,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 22:10:02,037 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2020-08-21 22:10:02,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:10:02,040 INFO L225 Difference]: With dead ends: 65 [2020-08-21 22:10:02,040 INFO L226 Difference]: Without dead ends: 61 [2020-08-21 22:10:02,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-08-21 22:10:02,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-08-21 22:10:02,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 58. [2020-08-21 22:10:02,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-08-21 22:10:02,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 84 transitions. [2020-08-21 22:10:02,058 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 84 transitions. Word has length 41 [2020-08-21 22:10:02,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:10:02,058 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 84 transitions. [2020-08-21 22:10:02,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 22:10:02,058 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 84 transitions. [2020-08-21 22:10:02,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-21 22:10:02,063 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:10:02,063 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 9, 5, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:10:02,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 22:10:02,064 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:10:02,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:10:02,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1986920854, now seen corresponding path program 4 times [2020-08-21 22:10:02,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:10:02,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1554209919] [2020-08-21 22:10:02,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:10:02,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:02,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:10:02,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:02,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 22:10:02,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:02,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:02,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:02,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:02,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:02,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:02,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:02,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:10:02,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:02,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 22:10:02,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:02,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 22:10:02,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:02,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:02,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:02,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:02,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:02,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:10:02,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:02,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 22:10:02,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:02,383 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 77 proven. 104 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-08-21 22:10:02,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1554209919] [2020-08-21 22:10:02,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:10:02,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-21 22:10:02,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102162808] [2020-08-21 22:10:02,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 22:10:02,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:10:02,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 22:10:02,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-08-21 22:10:02,386 INFO L87 Difference]: Start difference. First operand 58 states and 84 transitions. Second operand 11 states. [2020-08-21 22:10:02,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:10:02,699 INFO L93 Difference]: Finished difference Result 107 states and 178 transitions. [2020-08-21 22:10:02,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-21 22:10:02,700 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 82 [2020-08-21 22:10:02,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:10:02,703 INFO L225 Difference]: With dead ends: 107 [2020-08-21 22:10:02,703 INFO L226 Difference]: Without dead ends: 57 [2020-08-21 22:10:02,706 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2020-08-21 22:10:02,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-08-21 22:10:02,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2020-08-21 22:10:02,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-08-21 22:10:02,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 70 transitions. [2020-08-21 22:10:02,719 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 70 transitions. Word has length 82 [2020-08-21 22:10:02,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:10:02,723 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 70 transitions. [2020-08-21 22:10:02,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 22:10:02,723 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 70 transitions. [2020-08-21 22:10:02,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-21 22:10:02,727 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:10:02,727 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 15, 9, 9, 9, 9, 9, 9, 9, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:10:02,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 22:10:02,728 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:10:02,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:10:02,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1040445716, now seen corresponding path program 5 times [2020-08-21 22:10:02,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:10:02,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2107189929] [2020-08-21 22:10:02,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:10:02,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:02,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:10:02,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:02,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 22:10:02,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:02,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:02,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:02,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:02,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:02,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:02,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:03,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:03,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:03,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:10:03,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:03,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 22:10:03,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:03,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 22:10:03,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:03,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:03,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:03,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:10:03,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:03,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 22:10:03,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:03,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:03,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:03,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:03,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:03,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:03,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:03,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:10:03,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:03,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 22:10:03,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:03,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 22:10:03,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:03,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:03,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:03,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:10:03,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:03,294 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 193 proven. 313 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2020-08-21 22:10:03,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2107189929] [2020-08-21 22:10:03,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:10:03,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 22:10:03,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093919337] [2020-08-21 22:10:03,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 22:10:03,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:10:03,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 22:10:03,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-08-21 22:10:03,298 INFO L87 Difference]: Start difference. First operand 54 states and 70 transitions. Second operand 13 states. [2020-08-21 22:10:03,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:10:03,789 INFO L93 Difference]: Finished difference Result 115 states and 189 transitions. [2020-08-21 22:10:03,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-21 22:10:03,789 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 136 [2020-08-21 22:10:03,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:10:03,792 INFO L225 Difference]: With dead ends: 115 [2020-08-21 22:10:03,792 INFO L226 Difference]: Without dead ends: 74 [2020-08-21 22:10:03,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2020-08-21 22:10:03,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-08-21 22:10:03,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 70. [2020-08-21 22:10:03,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-08-21 22:10:03,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 92 transitions. [2020-08-21 22:10:03,805 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 92 transitions. Word has length 136 [2020-08-21 22:10:03,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:10:03,806 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 92 transitions. [2020-08-21 22:10:03,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 22:10:03,806 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 92 transitions. [2020-08-21 22:10:03,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-08-21 22:10:03,808 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:10:03,809 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 20, 12, 12, 12, 12, 12, 12, 12, 8, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:10:03,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 22:10:03,809 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:10:03,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:10:03,810 INFO L82 PathProgramCache]: Analyzing trace with hash 259499213, now seen corresponding path program 6 times [2020-08-21 22:10:03,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:10:03,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1320506017] [2020-08-21 22:10:03,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:10:03,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:03,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:10:03,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:03,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 22:10:03,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:03,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:03,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:04,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:04,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:04,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:04,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:04,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:04,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:04,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:04,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:04,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:10:04,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:04,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 22:10:04,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:04,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 22:10:04,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:04,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:04,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:04,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:10:04,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:04,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 22:10:04,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:04,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:04,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:04,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:04,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:04,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:10:04,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:04,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 22:10:04,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:04,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 22:10:04,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:04,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:04,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:04,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:04,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:04,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:04,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:04,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:10:04,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:04,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 22:10:04,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:04,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 22:10:04,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:04,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:04,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:04,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:10:04,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:04,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1654 backedges. 93 proven. 533 refuted. 0 times theorem prover too weak. 1028 trivial. 0 not checked. [2020-08-21 22:10:04,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1320506017] [2020-08-21 22:10:04,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:10:04,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 22:10:04,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612554172] [2020-08-21 22:10:04,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 22:10:04,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:10:04,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 22:10:04,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-08-21 22:10:04,283 INFO L87 Difference]: Start difference. First operand 70 states and 92 transitions. Second operand 10 states. [2020-08-21 22:10:04,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:10:04,521 INFO L93 Difference]: Finished difference Result 186 states and 273 transitions. [2020-08-21 22:10:04,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 22:10:04,524 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 177 [2020-08-21 22:10:04,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:10:04,533 INFO L225 Difference]: With dead ends: 186 [2020-08-21 22:10:04,533 INFO L226 Difference]: Without dead ends: 182 [2020-08-21 22:10:04,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2020-08-21 22:10:04,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-08-21 22:10:04,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 170. [2020-08-21 22:10:04,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-08-21 22:10:04,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 250 transitions. [2020-08-21 22:10:04,576 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 250 transitions. Word has length 177 [2020-08-21 22:10:04,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:10:04,580 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 250 transitions. [2020-08-21 22:10:04,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 22:10:04,580 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 250 transitions. [2020-08-21 22:10:04,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-08-21 22:10:04,584 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:10:04,585 INFO L422 BasicCegarLoop]: trace histogram [47, 47, 38, 23, 23, 23, 23, 23, 23, 23, 15, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:10:04,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 22:10:04,586 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:10:04,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:10:04,586 INFO L82 PathProgramCache]: Analyzing trace with hash -530192014, now seen corresponding path program 7 times [2020-08-21 22:10:04,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:10:04,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1512217525] [2020-08-21 22:10:04,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:10:04,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:04,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:10:04,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:04,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 22:10:04,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:04,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:04,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:04,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:05,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:05,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:05,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:05,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:05,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:05,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:05,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:05,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:05,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:05,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:10:05,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:05,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 22:10:05,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:05,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 22:10:05,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:05,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:05,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:05,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:10:05,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:05,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 22:10:05,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:05,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:05,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:05,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:05,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:05,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:10:05,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:05,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 22:10:05,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:05,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 22:10:05,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:05,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:05,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:05,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:05,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:05,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:05,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:05,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:10:05,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:05,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 22:10:05,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:05,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 22:10:05,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:05,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:05,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:05,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:10:05,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:05,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-21 22:10:05,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:05,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:05,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:05,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:05,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:05,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:05,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:05,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:05,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:05,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:05,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:05,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:10:05,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:05,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 22:10:05,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:05,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 22:10:05,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:05,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:05,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:05,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:10:05,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:05,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 22:10:05,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:05,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:05,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:05,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:05,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:05,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:10:05,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:05,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 22:10:05,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:05,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 22:10:05,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:05,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:05,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:05,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:05,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:05,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:10:05,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:05,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 22:10:05,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:05,794 INFO L134 CoverageAnalysis]: Checked inductivity of 6039 backedges. 1358 proven. 1342 refuted. 0 times theorem prover too weak. 3339 trivial. 0 not checked. [2020-08-21 22:10:05,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1512217525] [2020-08-21 22:10:05,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:10:05,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-21 22:10:05,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267175926] [2020-08-21 22:10:05,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-21 22:10:05,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:10:05,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-21 22:10:05,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2020-08-21 22:10:05,798 INFO L87 Difference]: Start difference. First operand 170 states and 250 transitions. Second operand 17 states. [2020-08-21 22:10:06,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:10:06,637 INFO L93 Difference]: Finished difference Result 281 states and 495 transitions. [2020-08-21 22:10:06,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-08-21 22:10:06,638 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 327 [2020-08-21 22:10:06,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:10:06,641 INFO L225 Difference]: With dead ends: 281 [2020-08-21 22:10:06,641 INFO L226 Difference]: Without dead ends: 125 [2020-08-21 22:10:06,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=320, Invalid=1240, Unknown=0, NotChecked=0, Total=1560 [2020-08-21 22:10:06,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-08-21 22:10:06,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 101. [2020-08-21 22:10:06,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-08-21 22:10:06,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 141 transitions. [2020-08-21 22:10:06,679 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 141 transitions. Word has length 327 [2020-08-21 22:10:06,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:10:06,679 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 141 transitions. [2020-08-21 22:10:06,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-21 22:10:06,680 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 141 transitions. [2020-08-21 22:10:06,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-08-21 22:10:06,684 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:10:06,684 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 33, 20, 20, 20, 20, 20, 20, 20, 13, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:10:06,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 22:10:06,685 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:10:06,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:10:06,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1425621089, now seen corresponding path program 8 times [2020-08-21 22:10:06,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:10:06,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1661950894] [2020-08-21 22:10:06,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:10:06,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:06,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:10:06,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:06,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 22:10:06,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:06,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:06,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:07,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:07,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:07,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:07,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:07,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:07,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:07,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:07,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:07,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:07,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:07,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:10:07,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:07,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 22:10:07,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:07,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 22:10:07,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:07,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:07,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:07,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:10:07,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:07,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 22:10:07,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:07,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:07,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:07,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:07,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:07,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:10:07,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:07,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 22:10:07,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:07,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 22:10:07,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:07,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:07,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:07,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:07,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:07,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:07,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:07,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:10:07,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:07,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 22:10:07,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:07,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 22:10:07,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:07,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:07,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:07,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:10:07,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:07,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-21 22:10:07,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:07,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:07,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:07,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:07,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:07,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:07,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:07,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:07,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:07,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:10:07,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:07,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 22:10:07,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:07,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 22:10:07,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:07,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:07,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:07,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:10:07,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:07,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 22:10:07,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:07,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:07,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:07,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:07,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:07,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:10:07,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:07,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 22:10:07,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:08,129 INFO L134 CoverageAnalysis]: Checked inductivity of 4568 backedges. 0 proven. 1500 refuted. 0 times theorem prover too weak. 3068 trivial. 0 not checked. [2020-08-21 22:10:08,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1661950894] [2020-08-21 22:10:08,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:10:08,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-08-21 22:10:08,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247101805] [2020-08-21 22:10:08,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-08-21 22:10:08,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:10:08,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-08-21 22:10:08,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2020-08-21 22:10:08,133 INFO L87 Difference]: Start difference. First operand 101 states and 141 transitions. Second operand 22 states. [2020-08-21 22:10:08,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:10:08,574 INFO L93 Difference]: Finished difference Result 114 states and 166 transitions. [2020-08-21 22:10:08,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-21 22:10:08,574 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 286 [2020-08-21 22:10:08,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:10:08,577 INFO L225 Difference]: With dead ends: 114 [2020-08-21 22:10:08,577 INFO L226 Difference]: Without dead ends: 110 [2020-08-21 22:10:08,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2020-08-21 22:10:08,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-08-21 22:10:08,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2020-08-21 22:10:08,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-08-21 22:10:08,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 159 transitions. [2020-08-21 22:10:08,592 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 159 transitions. Word has length 286 [2020-08-21 22:10:08,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:10:08,592 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 159 transitions. [2020-08-21 22:10:08,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-08-21 22:10:08,593 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 159 transitions. [2020-08-21 22:10:08,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2020-08-21 22:10:08,598 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:10:08,598 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 41, 25, 25, 25, 25, 25, 25, 25, 16, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:10:08,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 22:10:08,599 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:10:08,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:10:08,599 INFO L82 PathProgramCache]: Analyzing trace with hash -617256294, now seen corresponding path program 9 times [2020-08-21 22:10:08,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:10:08,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [308792771] [2020-08-21 22:10:08,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:10:08,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:08,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:10:08,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:08,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 22:10:08,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:08,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:08,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:08,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:08,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:08,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:09,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:09,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:09,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:09,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:09,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:09,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:09,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:09,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:09,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:09,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:10:09,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:09,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 22:10:09,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:09,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 22:10:09,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:09,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:09,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:09,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:10:09,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:09,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 22:10:09,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:09,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:09,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:09,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:09,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:09,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:10:09,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:09,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 22:10:09,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:09,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 22:10:09,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:09,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:09,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:09,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:09,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:09,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:09,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:09,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:10:09,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:09,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 22:10:09,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:09,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 22:10:09,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:09,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:09,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:09,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:10:09,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:09,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-21 22:10:09,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:09,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:09,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:09,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:09,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:09,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:09,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:09,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:10:09,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:09,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 22:10:09,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:09,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 22:10:09,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:09,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:09,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:09,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:10:09,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:09,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-21 22:10:09,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:09,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:09,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:09,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:09,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:09,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:09,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:09,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:09,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:09,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:10:09,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:09,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 22:10:09,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:09,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 22:10:09,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:09,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:09,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:09,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:10:09,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:09,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 22:10:09,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:09,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:09,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:09,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:09,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:09,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:10:09,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:09,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 22:10:09,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:09,596 INFO L134 CoverageAnalysis]: Checked inductivity of 7120 backedges. 863 proven. 1526 refuted. 0 times theorem prover too weak. 4731 trivial. 0 not checked. [2020-08-21 22:10:09,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [308792771] [2020-08-21 22:10:09,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:10:09,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 22:10:09,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512830835] [2020-08-21 22:10:09,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 22:10:09,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:10:09,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 22:10:09,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-08-21 22:10:09,599 INFO L87 Difference]: Start difference. First operand 109 states and 159 transitions. Second operand 15 states. [2020-08-21 22:10:10,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:10:10,113 INFO L93 Difference]: Finished difference Result 213 states and 325 transitions. [2020-08-21 22:10:10,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-21 22:10:10,114 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 354 [2020-08-21 22:10:10,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:10:10,116 INFO L225 Difference]: With dead ends: 213 [2020-08-21 22:10:10,117 INFO L226 Difference]: Without dead ends: 118 [2020-08-21 22:10:10,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=157, Invalid=545, Unknown=0, NotChecked=0, Total=702 [2020-08-21 22:10:10,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-08-21 22:10:10,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 97. [2020-08-21 22:10:10,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-08-21 22:10:10,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 136 transitions. [2020-08-21 22:10:10,128 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 136 transitions. Word has length 354 [2020-08-21 22:10:10,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:10:10,129 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 136 transitions. [2020-08-21 22:10:10,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 22:10:10,129 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 136 transitions. [2020-08-21 22:10:10,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2020-08-21 22:10:10,136 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:10:10,136 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 46, 28, 28, 28, 28, 28, 28, 28, 18, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:10:10,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 22:10:10,137 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:10:10,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:10:10,137 INFO L82 PathProgramCache]: Analyzing trace with hash 161946605, now seen corresponding path program 10 times [2020-08-21 22:10:10,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:10:10,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [338749144] [2020-08-21 22:10:10,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:10:10,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:10,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:10:10,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:10,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 22:10:10,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:10,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:10,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:10,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:10,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:10,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:10,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:10,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:10,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:10,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:10,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:10,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:10,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:10,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:10,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:10,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:10:10,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:10,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 22:10:10,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:10,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 22:10:10,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:10,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:10,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:10,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:10:10,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:10,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 22:10:10,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:10,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:10,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:10,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:10,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:10,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:10:10,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:10,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 22:10:10,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:10,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 22:10:10,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:10,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:10,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:10,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:10,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:10,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:10,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:10,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:10:10,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:10,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 22:10:10,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:10,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 22:10:10,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:10,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:10,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:10,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:10:10,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:10,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-21 22:10:10,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:10,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:10,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:10,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:10,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:10,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:10,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:10,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:10,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:10,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:10:10,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:10,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 22:10:10,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:10,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 22:10:10,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:10,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:10,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:10,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:10:10,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:10,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 22:10:10,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:10,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:10,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:10,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:10,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:10,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:10:10,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:10,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 22:10:10,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:11,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-08-21 22:10:11,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:11,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:11,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:11,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:11,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:11,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:11,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:11,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:11,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:11,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:10:11,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:11,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 22:10:11,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:11,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 22:10:11,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:11,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:11,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:11,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:10:11,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:11,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 22:10:11,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:11,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:11,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:11,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 22:10:11,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:11,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:10:11,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:11,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 22:10:11,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:10:11,606 INFO L134 CoverageAnalysis]: Checked inductivity of 8931 backedges. 1406 proven. 1622 refuted. 0 times theorem prover too weak. 5903 trivial. 0 not checked. [2020-08-21 22:10:11,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [338749144] [2020-08-21 22:10:11,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:10:11,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-21 22:10:11,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656839661] [2020-08-21 22:10:11,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-21 22:10:11,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:10:11,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-21 22:10:11,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-08-21 22:10:11,611 INFO L87 Difference]: Start difference. First operand 97 states and 136 transitions. Second operand 17 states. [2020-08-21 22:10:12,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:10:12,228 INFO L93 Difference]: Finished difference Result 194 states and 289 transitions. [2020-08-21 22:10:12,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-21 22:10:12,229 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 395 [2020-08-21 22:10:12,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:10:12,230 INFO L225 Difference]: With dead ends: 194 [2020-08-21 22:10:12,230 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 22:10:12,232 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=214, Invalid=778, Unknown=0, NotChecked=0, Total=992 [2020-08-21 22:10:12,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 22:10:12,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 22:10:12,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 22:10:12,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 22:10:12,233 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 395 [2020-08-21 22:10:12,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:10:12,234 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 22:10:12,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-21 22:10:12,234 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 22:10:12,234 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 22:10:12,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-21 22:10:12,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 22:10:12,819 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 42 [2020-08-21 22:10:12,923 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-21 22:10:12,923 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-21 22:10:12,923 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-21 22:10:12,924 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-21 22:10:12,924 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-21 22:10:12,924 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-21 22:10:12,924 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 27) no Hoare annotation was computed. [2020-08-21 22:10:12,924 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 23 30) the Hoare annotation is: true [2020-08-21 22:10:12,924 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-08-21 22:10:12,924 INFO L268 CegarLoopResult]: For program point L26(lines 26 28) no Hoare annotation was computed. [2020-08-21 22:10:12,925 INFO L264 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (and (<= 7 main_~x~0) (<= main_~x~0 7)) [2020-08-21 22:10:12,925 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 23 30) no Hoare annotation was computed. [2020-08-21 22:10:12,925 INFO L268 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-08-21 22:10:12,925 INFO L268 CegarLoopResult]: For program point L26-2(lines 26 28) no Hoare annotation was computed. [2020-08-21 22:10:12,925 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 23 30) no Hoare annotation was computed. [2020-08-21 22:10:12,925 INFO L268 CegarLoopResult]: For program point fiboEXIT(lines 5 13) no Hoare annotation was computed. [2020-08-21 22:10:12,925 INFO L268 CegarLoopResult]: For program point fiboFINAL(lines 5 13) no Hoare annotation was computed. [2020-08-21 22:10:12,925 INFO L264 CegarLoopResult]: At program point L11(line 11) the Hoare annotation is: (and (<= 2 |fibo_#in~n|) (= fibo_~n |fibo_#in~n|)) [2020-08-21 22:10:12,926 INFO L268 CegarLoopResult]: For program point L11-1(line 11) no Hoare annotation was computed. [2020-08-21 22:10:12,926 INFO L264 CegarLoopResult]: At program point L11-2(line 11) the Hoare annotation is: (let ((.cse1 (<= 1 |fibo_#t~ret0|)) (.cse2 (<= |fibo_#t~ret0| 1)) (.cse0 (= fibo_~n |fibo_#in~n|))) (or (and (<= 3 |fibo_#t~ret0|) (<= 5 |fibo_#in~n|) (<= |fibo_#t~ret0| 3) .cse0 (<= |fibo_#in~n| 5)) (and (<= 8 |fibo_#t~ret0|) .cse0 (<= 7 |fibo_#in~n|) (<= |fibo_#t~ret0| 8)) (and (<= 5 |fibo_#t~ret0|) (<= |fibo_#in~n| 6) .cse0 (<= |fibo_#t~ret0| 5) (<= 6 |fibo_#in~n|)) (and .cse1 (<= 2 |fibo_#in~n|) .cse2 (<= |fibo_#in~n| 2) .cse0) (and (<= 8 fibo_~n) .cse0) (and (<= |fibo_#in~n| 4) (<= 2 |fibo_#t~ret0|) (<= |fibo_#t~ret0| 2) .cse0 (<= 4 |fibo_#in~n|)) (and .cse1 .cse2 .cse0 (<= 3 |fibo_#in~n|) (<= |fibo_#in~n| 3)))) [2020-08-21 22:10:12,926 INFO L268 CegarLoopResult]: For program point L8(lines 8 12) no Hoare annotation was computed. [2020-08-21 22:10:12,926 INFO L268 CegarLoopResult]: For program point L11-3(line 11) no Hoare annotation was computed. [2020-08-21 22:10:12,927 INFO L268 CegarLoopResult]: For program point L6(lines 6 12) no Hoare annotation was computed. [2020-08-21 22:10:12,927 INFO L271 CegarLoopResult]: At program point fiboENTRY(lines 5 13) the Hoare annotation is: true [2020-08-21 22:10:12,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 10:10:12 BoogieIcfgContainer [2020-08-21 22:10:12,933 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 22:10:12,935 INFO L168 Benchmark]: Toolchain (without parser) took 13608.83 ms. Allocated memory was 141.6 MB in the beginning and 585.6 MB in the end (delta: 444.1 MB). Free memory was 104.2 MB in the beginning and 285.5 MB in the end (delta: -181.4 MB). Peak memory consumption was 262.7 MB. Max. memory is 7.1 GB. [2020-08-21 22:10:12,936 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 22:10:12,936 INFO L168 Benchmark]: CACSL2BoogieTranslator took 306.22 ms. Allocated memory is still 141.6 MB. Free memory was 103.9 MB in the beginning and 94.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-08-21 22:10:12,937 INFO L168 Benchmark]: Boogie Preprocessor took 37.56 ms. Allocated memory is still 141.6 MB. Free memory was 94.6 MB in the beginning and 93.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-08-21 22:10:12,938 INFO L168 Benchmark]: RCFGBuilder took 334.91 ms. Allocated memory was 141.6 MB in the beginning and 203.9 MB in the end (delta: 62.4 MB). Free memory was 93.2 MB in the beginning and 171.5 MB in the end (delta: -78.3 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-08-21 22:10:12,939 INFO L168 Benchmark]: TraceAbstraction took 12924.79 ms. Allocated memory was 203.9 MB in the beginning and 585.6 MB in the end (delta: 381.7 MB). Free memory was 170.9 MB in the beginning and 285.5 MB in the end (delta: -114.7 MB). Peak memory consumption was 267.0 MB. Max. memory is 7.1 GB. [2020-08-21 22:10:12,942 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 306.22 ms. Allocated memory is still 141.6 MB. Free memory was 103.9 MB in the beginning and 94.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 37.56 ms. Allocated memory is still 141.6 MB. Free memory was 94.6 MB in the beginning and 93.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 334.91 ms. Allocated memory was 141.6 MB in the beginning and 203.9 MB in the end (delta: 62.4 MB). Free memory was 93.2 MB in the beginning and 171.5 MB in the end (delta: -78.3 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12924.79 ms. Allocated memory was 203.9 MB in the beginning and 585.6 MB in the end (delta: 381.7 MB). Free memory was 170.9 MB in the beginning and 285.5 MB in the end (delta: -114.7 MB). Peak memory consumption was 267.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 27]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 12.1s, OverallIterations: 13, TraceHistogramMax: 57, AutomataDifference: 4.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 340 SDtfs, 600 SDslu, 1637 SDs, 0 SdLazy, 2394 SolverSat, 605 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 881 GetRequests, 666 SyntacticMatches, 0 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 806 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=170occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 76 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 323 PreInvPairs, 389 NumberOfFragments, 120 HoareAnnotationTreeSize, 323 FomulaSimplifications, 227 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 8 FomulaSimplificationsInter, 2180 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 6.4s InterpolantComputationTime, 1918 NumberOfCodeBlocks, 1918 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 1905 ConstructedInterpolants, 0 QuantifiedInterpolants, 1027711 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 2 PerfectInterpolantSequences, 22683/29663 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...