/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test24-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 15:29:33,390 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-08-18 15:29:33,426 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 15:29:33,427 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 15:29:33,428 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 15:29:33,429 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 15:29:33,434 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 15:29:33,435 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 15:29:33,436 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 15:29:33,438 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 15:29:33,440 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 15:29:33,441 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 15:29:33,442 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 15:29:33,443 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 15:29:33,446 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 15:29:33,457 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 15:29:33,458 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 15:29:33,459 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 15:29:33,461 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 [2020-08-18 15:29:33,509 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 15:29:33,509 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 15:29:33,510 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 15:29:33,511 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 15:29:33,512 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 15:29:33,512 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 15:29:33,512 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 15:29:33,512 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 15:29:33,512 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 15:29:33,513 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 15:29:33,513 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 15:29:33,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 15:29:33,513 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 15:29:33,513 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 15:29:33,514 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 15:29:33,515 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 15:29:33,515 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 15:29:33,515 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 15:29:33,515 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 15:29:33,516 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 15:29:33,516 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 15:29:33,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 15:29:33,516 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 15:29:33,516 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 15:29:33,520 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 15:29:33,520 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 15:29:33,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 15:29:33,520 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 15:29:33,520 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 15:29:33,520 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 -> false [2020-08-18 15:29:33,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 15:29:33,830 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 15:29:33,833 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 15:29:33,835 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 15:29:33,837 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 15:29:33,838 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test24-1.c [2020-08-18 15:29:33,911 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/563baade1/eaa2cd634b444d41a3b676eff40cb646/FLAG6527cfcd7 [2020-08-18 15:29:34,396 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 15:29:34,397 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test24-1.c [2020-08-18 15:29:34,405 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/563baade1/eaa2cd634b444d41a3b676eff40cb646/FLAG6527cfcd7 [2020-08-18 15:29:34,817 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/563baade1/eaa2cd634b444d41a3b676eff40cb646 [2020-08-18 15:29:34,827 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 15:29:34,829 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 15:29:34,830 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 15:29:34,830 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 15:29:34,834 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 15:29:34,835 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:29:34" (1/1) ... [2020-08-18 15:29:34,838 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c364e78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:29:34, skipping insertion in model container [2020-08-18 15:29:34,838 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:29:34" (1/1) ... [2020-08-18 15:29:34,846 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 15:29:34,868 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 15:29:35,074 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:29:35,083 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 15:29:35,099 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:29:35,205 INFO L208 MainTranslator]: Completed translation [2020-08-18 15:29:35,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:29:35 WrapperNode [2020-08-18 15:29:35,206 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 15:29:35,207 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 15:29:35,207 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 15:29:35,207 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 15:29:35,221 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:29:35" (1/1) ... [2020-08-18 15:29:35,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:29:35" (1/1) ... [2020-08-18 15:29:35,234 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:29:35" (1/1) ... [2020-08-18 15:29:35,234 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:29:35" (1/1) ... [2020-08-18 15:29:35,250 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:29:35" (1/1) ... [2020-08-18 15:29:35,254 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:29:35" (1/1) ... [2020-08-18 15:29:35,255 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:29:35" (1/1) ... [2020-08-18 15:29:35,257 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 15:29:35,258 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 15:29:35,258 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 15:29:35,258 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 15:29:35,259 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:29:35" (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 [2020-08-18 15:29:35,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 15:29:35,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 15:29:35,319 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-08-18 15:29:35,319 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 15:29:35,319 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 15:29:35,319 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 15:29:35,320 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-18 15:29:35,320 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 15:29:35,320 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 15:29:35,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 15:29:35,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 15:29:35,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 15:29:35,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 15:29:35,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 15:29:35,549 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 15:29:35,549 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-18 15:29:35,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:29:35 BoogieIcfgContainer [2020-08-18 15:29:35,555 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 15:29:35,557 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 15:29:35,557 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 15:29:35,560 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 15:29:35,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 03:29:34" (1/3) ... [2020-08-18 15:29:35,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@732b283f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:29:35, skipping insertion in model container [2020-08-18 15:29:35,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:29:35" (2/3) ... [2020-08-18 15:29:35,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@732b283f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:29:35, skipping insertion in model container [2020-08-18 15:29:35,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:29:35" (3/3) ... [2020-08-18 15:29:35,563 INFO L109 eAbstractionObserver]: Analyzing ICFG test24-1.c [2020-08-18 15:29:35,578 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 15:29:35,586 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 15:29:35,603 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 15:29:35,656 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 15:29:35,657 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 15:29:35,657 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 15:29:35,657 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 15:29:35,657 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 15:29:35,657 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 15:29:35,657 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 15:29:35,658 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 15:29:35,697 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-08-18 15:29:35,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-18 15:29:35,704 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:29:35,705 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:29:35,705 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:29:35,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:29:35,712 INFO L82 PathProgramCache]: Analyzing trace with hash 149844724, now seen corresponding path program 1 times [2020-08-18 15:29:35,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:29:35,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1462774138] [2020-08-18 15:29:35,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:29:35,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:35,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:29:35,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:35,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-18 15:29:35,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:35,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:29:35,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1462774138] [2020-08-18 15:29:35,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:29:35,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 15:29:35,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789881278] [2020-08-18 15:29:35,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 15:29:35,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:29:35,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 15:29:35,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 15:29:35,959 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 3 states. [2020-08-18 15:29:36,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:29:36,042 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2020-08-18 15:29:36,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 15:29:36,045 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-08-18 15:29:36,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:29:36,057 INFO L225 Difference]: With dead ends: 35 [2020-08-18 15:29:36,057 INFO L226 Difference]: Without dead ends: 17 [2020-08-18 15:29:36,061 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 15:29:36,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-08-18 15:29:36,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-08-18 15:29:36,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-08-18 15:29:36,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-08-18 15:29:36,111 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2020-08-18 15:29:36,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:29:36,111 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-08-18 15:29:36,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 15:29:36,112 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-08-18 15:29:36,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-18 15:29:36,113 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:29:36,113 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:29:36,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 15:29:36,114 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:29:36,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:29:36,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1249419983, now seen corresponding path program 1 times [2020-08-18 15:29:36,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:29:36,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1667186441] [2020-08-18 15:29:36,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:29:36,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:36,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:29:36,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:36,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:29:36,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:36,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:29:36,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1667186441] [2020-08-18 15:29:36,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:29:36,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 15:29:36,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009551733] [2020-08-18 15:29:36,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 15:29:36,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:29:36,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 15:29:36,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 15:29:36,401 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 5 states. [2020-08-18 15:29:36,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:29:36,490 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-08-18 15:29:36,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 15:29:36,492 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-08-18 15:29:36,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:29:36,493 INFO L225 Difference]: With dead ends: 27 [2020-08-18 15:29:36,493 INFO L226 Difference]: Without dead ends: 19 [2020-08-18 15:29:36,495 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 [2020-08-18 15:29:36,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-08-18 15:29:36,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-08-18 15:29:36,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-08-18 15:29:36,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-08-18 15:29:36,507 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2020-08-18 15:29:36,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:29:36,508 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-08-18 15:29:36,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 15:29:36,508 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-08-18 15:29:36,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-18 15:29:36,511 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:29:36,512 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:29:36,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 15:29:36,512 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:29:36,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:29:36,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1840889772, now seen corresponding path program 1 times [2020-08-18 15:29:36,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:29:36,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [967274364] [2020-08-18 15:29:36,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:29:36,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:36,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:29:36,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:36,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 15:29:36,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:36,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:29:36,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [967274364] [2020-08-18 15:29:36,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:29:36,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-18 15:29:36,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197811072] [2020-08-18 15:29:36,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 15:29:36,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:29:36,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 15:29:36,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 15:29:36,675 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 6 states. [2020-08-18 15:29:36,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:29:36,766 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-08-18 15:29:36,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 15:29:36,767 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-08-18 15:29:36,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:29:36,768 INFO L225 Difference]: With dead ends: 29 [2020-08-18 15:29:36,768 INFO L226 Difference]: Without dead ends: 21 [2020-08-18 15:29:36,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-08-18 15:29:36,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-08-18 15:29:36,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-08-18 15:29:36,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-08-18 15:29:36,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2020-08-18 15:29:36,775 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2020-08-18 15:29:36,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:29:36,776 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2020-08-18 15:29:36,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 15:29:36,776 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-08-18 15:29:36,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-18 15:29:36,777 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:29:36,777 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:29:36,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 15:29:36,778 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:29:36,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:29:36,778 INFO L82 PathProgramCache]: Analyzing trace with hash -488804505, now seen corresponding path program 2 times [2020-08-18 15:29:36,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:29:36,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301346391] [2020-08-18 15:29:36,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:29:36,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:36,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:29:36,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:36,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 15:29:36,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:36,938 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:29:36,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301346391] [2020-08-18 15:29:36,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:29:36,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-18 15:29:36,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773093085] [2020-08-18 15:29:36,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 15:29:36,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:29:36,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 15:29:36,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-18 15:29:36,941 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 7 states. [2020-08-18 15:29:37,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:29:37,029 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2020-08-18 15:29:37,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 15:29:37,030 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-08-18 15:29:37,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:29:37,031 INFO L225 Difference]: With dead ends: 31 [2020-08-18 15:29:37,031 INFO L226 Difference]: Without dead ends: 23 [2020-08-18 15:29:37,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-08-18 15:29:37,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-08-18 15:29:37,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-08-18 15:29:37,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-08-18 15:29:37,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-08-18 15:29:37,037 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 20 [2020-08-18 15:29:37,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:29:37,038 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-08-18 15:29:37,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 15:29:37,038 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-08-18 15:29:37,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-18 15:29:37,039 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:29:37,039 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:29:37,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 15:29:37,040 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:29:37,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:29:37,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1647043486, now seen corresponding path program 3 times [2020-08-18 15:29:37,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:29:37,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [950995211] [2020-08-18 15:29:37,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:29:37,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:37,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:29:37,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:37,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 15:29:37,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:37,194 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:29:37,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [950995211] [2020-08-18 15:29:37,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:29:37,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-18 15:29:37,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410679123] [2020-08-18 15:29:37,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 15:29:37,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:29:37,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 15:29:37,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-08-18 15:29:37,197 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 9 states. [2020-08-18 15:29:37,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:29:37,308 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2020-08-18 15:29:37,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 15:29:37,308 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-08-18 15:29:37,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:29:37,309 INFO L225 Difference]: With dead ends: 33 [2020-08-18 15:29:37,309 INFO L226 Difference]: Without dead ends: 25 [2020-08-18 15:29:37,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-08-18 15:29:37,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-08-18 15:29:37,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-08-18 15:29:37,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-08-18 15:29:37,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2020-08-18 15:29:37,315 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2020-08-18 15:29:37,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:29:37,316 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2020-08-18 15:29:37,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 15:29:37,316 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2020-08-18 15:29:37,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-18 15:29:37,317 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:29:37,317 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:29:37,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 15:29:37,318 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:29:37,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:29:37,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1976792733, now seen corresponding path program 4 times [2020-08-18 15:29:37,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:29:37,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1205041796] [2020-08-18 15:29:37,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:29:37,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:37,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:29:37,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:37,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 15:29:37,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:37,422 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:29:37,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1205041796] [2020-08-18 15:29:37,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:29:37,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-18 15:29:37,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101135362] [2020-08-18 15:29:37,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 15:29:37,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:29:37,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 15:29:37,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-08-18 15:29:37,425 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 9 states. [2020-08-18 15:29:37,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:29:37,567 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2020-08-18 15:29:37,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 15:29:37,568 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2020-08-18 15:29:37,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:29:37,569 INFO L225 Difference]: With dead ends: 35 [2020-08-18 15:29:37,569 INFO L226 Difference]: Without dead ends: 27 [2020-08-18 15:29:37,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2020-08-18 15:29:37,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-08-18 15:29:37,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-08-18 15:29:37,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-08-18 15:29:37,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-08-18 15:29:37,575 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 24 [2020-08-18 15:29:37,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:29:37,576 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-08-18 15:29:37,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 15:29:37,576 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-08-18 15:29:37,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-18 15:29:37,577 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:29:37,577 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:29:37,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 15:29:37,578 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:29:37,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:29:37,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1264922136, now seen corresponding path program 5 times [2020-08-18 15:29:37,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:29:37,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143016489] [2020-08-18 15:29:37,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:29:37,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:37,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:29:37,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:37,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 15:29:37,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:37,774 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:29:37,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143016489] [2020-08-18 15:29:37,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:29:37,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 15:29:37,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95876956] [2020-08-18 15:29:37,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 15:29:37,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:29:37,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 15:29:37,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-08-18 15:29:37,778 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 10 states. [2020-08-18 15:29:37,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:29:37,950 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2020-08-18 15:29:37,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 15:29:37,951 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-08-18 15:29:37,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:29:37,952 INFO L225 Difference]: With dead ends: 37 [2020-08-18 15:29:37,952 INFO L226 Difference]: Without dead ends: 29 [2020-08-18 15:29:37,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2020-08-18 15:29:37,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-08-18 15:29:37,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-08-18 15:29:37,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-08-18 15:29:37,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2020-08-18 15:29:37,963 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 26 [2020-08-18 15:29:37,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:29:37,963 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2020-08-18 15:29:37,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 15:29:37,965 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2020-08-18 15:29:37,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-18 15:29:37,966 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:29:37,966 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:29:37,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 15:29:37,967 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:29:37,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:29:37,968 INFO L82 PathProgramCache]: Analyzing trace with hash 57078483, now seen corresponding path program 6 times [2020-08-18 15:29:37,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:29:37,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224852780] [2020-08-18 15:29:37,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:29:38,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:38,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:29:38,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:38,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 15:29:38,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:38,150 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:29:38,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224852780] [2020-08-18 15:29:38,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:29:38,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 15:29:38,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840027370] [2020-08-18 15:29:38,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 15:29:38,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:29:38,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 15:29:38,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-08-18 15:29:38,153 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 11 states. [2020-08-18 15:29:38,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:29:38,305 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2020-08-18 15:29:38,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 15:29:38,306 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-08-18 15:29:38,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:29:38,307 INFO L225 Difference]: With dead ends: 39 [2020-08-18 15:29:38,307 INFO L226 Difference]: Without dead ends: 31 [2020-08-18 15:29:38,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=196, Unknown=0, NotChecked=0, Total=306 [2020-08-18 15:29:38,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-08-18 15:29:38,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-08-18 15:29:38,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-08-18 15:29:38,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2020-08-18 15:29:38,313 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 28 [2020-08-18 15:29:38,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:29:38,313 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2020-08-18 15:29:38,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 15:29:38,314 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2020-08-18 15:29:38,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-18 15:29:38,315 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:29:38,315 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:29:38,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 15:29:38,315 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:29:38,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:29:38,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1039502130, now seen corresponding path program 7 times [2020-08-18 15:29:38,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:29:38,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [501036318] [2020-08-18 15:29:38,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:29:38,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:38,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:29:38,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:38,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 15:29:38,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:38,441 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:29:38,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [501036318] [2020-08-18 15:29:38,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:29:38,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 15:29:38,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382855802] [2020-08-18 15:29:38,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 15:29:38,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:29:38,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 15:29:38,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-08-18 15:29:38,443 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 12 states. [2020-08-18 15:29:38,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:29:38,606 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2020-08-18 15:29:38,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-18 15:29:38,606 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2020-08-18 15:29:38,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:29:38,607 INFO L225 Difference]: With dead ends: 41 [2020-08-18 15:29:38,607 INFO L226 Difference]: Without dead ends: 33 [2020-08-18 15:29:38,608 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=137, Invalid=243, Unknown=0, NotChecked=0, Total=380 [2020-08-18 15:29:38,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-08-18 15:29:38,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-08-18 15:29:38,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-08-18 15:29:38,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2020-08-18 15:29:38,613 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 30 [2020-08-18 15:29:38,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:29:38,613 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2020-08-18 15:29:38,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 15:29:38,613 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2020-08-18 15:29:38,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-08-18 15:29:38,614 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:29:38,614 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:29:38,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 15:29:38,615 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:29:38,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:29:38,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1708483593, now seen corresponding path program 8 times [2020-08-18 15:29:38,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:29:38,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1313839897] [2020-08-18 15:29:38,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:29:38,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:38,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:29:38,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:38,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-18 15:29:38,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:38,747 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:29:38,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1313839897] [2020-08-18 15:29:38,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:29:38,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 15:29:38,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156996328] [2020-08-18 15:29:38,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 15:29:38,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:29:38,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 15:29:38,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-08-18 15:29:38,749 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 13 states. [2020-08-18 15:29:38,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:29:38,950 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2020-08-18 15:29:38,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 15:29:38,951 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 32 [2020-08-18 15:29:38,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:29:38,952 INFO L225 Difference]: With dead ends: 43 [2020-08-18 15:29:38,952 INFO L226 Difference]: Without dead ends: 35 [2020-08-18 15:29:38,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=167, Invalid=295, Unknown=0, NotChecked=0, Total=462 [2020-08-18 15:29:38,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-08-18 15:29:38,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-08-18 15:29:38,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-08-18 15:29:38,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2020-08-18 15:29:38,961 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 32 [2020-08-18 15:29:38,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:29:38,961 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2020-08-18 15:29:38,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 15:29:38,961 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2020-08-18 15:29:38,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-18 15:29:38,962 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:29:38,962 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:29:38,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 15:29:38,966 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:29:38,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:29:38,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1117876356, now seen corresponding path program 9 times [2020-08-18 15:29:38,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:29:38,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [876182705] [2020-08-18 15:29:38,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:29:38,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:39,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:29:39,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:39,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-18 15:29:39,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:39,194 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:29:39,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [876182705] [2020-08-18 15:29:39,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:29:39,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 15:29:39,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673400424] [2020-08-18 15:29:39,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 15:29:39,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:29:39,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 15:29:39,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2020-08-18 15:29:39,199 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 15 states. [2020-08-18 15:29:39,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:29:39,428 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2020-08-18 15:29:39,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-18 15:29:39,429 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 34 [2020-08-18 15:29:39,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:29:39,432 INFO L225 Difference]: With dead ends: 45 [2020-08-18 15:29:39,432 INFO L226 Difference]: Without dead ends: 37 [2020-08-18 15:29:39,433 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=213, Invalid=387, Unknown=0, NotChecked=0, Total=600 [2020-08-18 15:29:39,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-08-18 15:29:39,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-08-18 15:29:39,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-08-18 15:29:39,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2020-08-18 15:29:39,437 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 34 [2020-08-18 15:29:39,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:29:39,438 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2020-08-18 15:29:39,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 15:29:39,438 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2020-08-18 15:29:39,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-18 15:29:39,439 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:29:39,439 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:29:39,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 15:29:39,440 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:29:39,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:29:39,440 INFO L82 PathProgramCache]: Analyzing trace with hash 480004671, now seen corresponding path program 10 times [2020-08-18 15:29:39,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:29:39,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1620413636] [2020-08-18 15:29:39,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:29:39,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:39,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:29:39,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:39,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 15:29:40,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:40,059 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:29:40,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1620413636] [2020-08-18 15:29:40,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:29:40,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-08-18 15:29:40,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011695100] [2020-08-18 15:29:40,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-08-18 15:29:40,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:29:40,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-08-18 15:29:40,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=376, Unknown=0, NotChecked=0, Total=420 [2020-08-18 15:29:40,062 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 21 states. [2020-08-18 15:29:40,392 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 107 [2020-08-18 15:29:40,745 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 110 [2020-08-18 15:29:40,996 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 100 [2020-08-18 15:29:41,320 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 106 [2020-08-18 15:29:41,551 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 91 [2020-08-18 15:29:41,854 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 98 [2020-08-18 15:29:42,075 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 82 [2020-08-18 15:29:42,339 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 89 [2020-08-18 15:29:42,529 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2020-08-18 15:29:42,780 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 81 [2020-08-18 15:29:42,945 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2020-08-18 15:29:43,181 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2020-08-18 15:29:43,527 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2020-08-18 15:29:43,833 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-08-18 15:29:44,083 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2020-08-18 15:29:44,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:29:44,557 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2020-08-18 15:29:44,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-18 15:29:44,558 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 36 [2020-08-18 15:29:44,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:29:44,560 INFO L225 Difference]: With dead ends: 44 [2020-08-18 15:29:44,560 INFO L226 Difference]: Without dead ends: 39 [2020-08-18 15:29:44,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=457, Invalid=1523, Unknown=0, NotChecked=0, Total=1980 [2020-08-18 15:29:44,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-08-18 15:29:44,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-08-18 15:29:44,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-08-18 15:29:44,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2020-08-18 15:29:44,572 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 36 [2020-08-18 15:29:44,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:29:44,573 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2020-08-18 15:29:44,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-08-18 15:29:44,573 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2020-08-18 15:29:44,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-18 15:29:44,574 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:29:44,574 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:29:44,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 15:29:44,574 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:29:44,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:29:44,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1665638714, now seen corresponding path program 11 times [2020-08-18 15:29:44,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:29:44,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127987407] [2020-08-18 15:29:44,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:29:44,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:44,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:29:44,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:44,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-18 15:29:44,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:44,751 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 112 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:29:44,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127987407] [2020-08-18 15:29:44,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:29:44,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 15:29:44,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224505836] [2020-08-18 15:29:44,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 15:29:44,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:29:44,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 15:29:44,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2020-08-18 15:29:44,758 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 16 states. [2020-08-18 15:29:44,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:29:44,873 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2020-08-18 15:29:44,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 15:29:44,873 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 38 [2020-08-18 15:29:44,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:29:44,874 INFO L225 Difference]: With dead ends: 39 [2020-08-18 15:29:44,874 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 15:29:44,875 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2020-08-18 15:29:44,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 15:29:44,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 15:29:44,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 15:29:44,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 15:29:44,878 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2020-08-18 15:29:44,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:29:44,878 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 15:29:44,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 15:29:44,879 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 15:29:44,879 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 15:29:44,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-18 15:29:44,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 15:29:45,644 WARN L193 SmtUtils]: Spent 631.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 106 [2020-08-18 15:29:45,660 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-18 15:29:45,661 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-08-18 15:29:45,661 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-18 15:29:45,661 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-18 15:29:45,661 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-18 15:29:45,661 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-18 15:29:45,662 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-18 15:29:45,662 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-08-18 15:29:45,662 INFO L268 CegarLoopResult]: For program point L29-1(lines 29 31) no Hoare annotation was computed. [2020-08-18 15:29:45,662 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 38) no Hoare annotation was computed. [2020-08-18 15:29:45,662 INFO L268 CegarLoopResult]: For program point L21(lines 21 32) no Hoare annotation was computed. [2020-08-18 15:29:45,662 INFO L268 CegarLoopResult]: For program point L21-2(lines 21 32) no Hoare annotation was computed. [2020-08-18 15:29:45,662 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 38) no Hoare annotation was computed. [2020-08-18 15:29:45,664 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 36) no Hoare annotation was computed. [2020-08-18 15:29:45,664 INFO L264 CegarLoopResult]: At program point L30(lines 15 38) the Hoare annotation is: false [2020-08-18 15:29:45,664 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 14 38) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-08-18 15:29:45,664 INFO L268 CegarLoopResult]: For program point L26-1(lines 26 28) no Hoare annotation was computed. [2020-08-18 15:29:45,665 INFO L264 CegarLoopResult]: At program point L26-3(lines 26 28) the Hoare annotation is: (let ((.cse0 (= |main_~#ad1~0.offset| 0)) (.cse3 (select |#memory_int| |main_~#ad1~0.base|)) (.cse4 (* main_~i~0 8)) (.cse2 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (or (let ((.cse1 (+ main_~i~0 7))) (and .cse0 (<= .cse1 .cse2) (= (select .cse3 (+ .cse4 |main_~#ad1~0.offset| 56)) .cse1) (<= .cse2 .cse1))) (let ((.cse5 (+ main_~i~0 4))) (and .cse0 (= .cse5 (select .cse3 (+ .cse4 |main_~#ad1~0.offset| 32))) (<= .cse5 .cse2) (<= .cse2 .cse5))) (and .cse0 (<= .cse2 main_~i~0) (= main_~i~0 (select .cse3 (+ .cse4 |main_~#ad1~0.offset|)))) (let ((.cse6 (+ main_~i~0 10))) (and (= .cse6 .cse2) .cse0 (= (select .cse3 (+ .cse4 |main_~#ad1~0.offset| 80)) .cse6))) (let ((.cse7 (+ main_~i~0 3))) (and (= .cse7 (select .cse3 (+ .cse4 |main_~#ad1~0.offset| 24))) .cse0 (<= .cse2 .cse7) (<= .cse7 .cse2))) (let ((.cse8 (+ main_~i~0 8))) (and .cse0 (<= .cse8 .cse2) (= .cse8 (select .cse3 (+ .cse4 |main_~#ad1~0.offset| 64))) (<= .cse2 .cse8))) (let ((.cse9 (+ main_~i~0 1))) (and (<= .cse9 .cse2) .cse0 (= (select .cse3 (+ .cse4 |main_~#ad1~0.offset| 8)) .cse9) (<= .cse2 .cse9))) (let ((.cse10 (+ main_~i~0 5))) (and (<= .cse2 .cse10) .cse0 (= (select .cse3 (+ .cse4 |main_~#ad1~0.offset| 40)) .cse10) (<= .cse10 .cse2))) (let ((.cse11 (+ main_~i~0 9))) (and (<= .cse11 .cse2) .cse0 (= (select .cse3 (+ .cse4 |main_~#ad1~0.offset| 72)) .cse11) (<= .cse2 .cse11))) (let ((.cse12 (+ main_~i~0 2))) (and .cse0 (<= .cse12 .cse2) (= .cse12 (select .cse3 (+ .cse4 |main_~#ad1~0.offset| 16))) (<= .cse2 .cse12))) (let ((.cse13 (+ main_~i~0 6))) (and .cse0 (= (select .cse3 (+ .cse4 |main_~#ad1~0.offset| 48)) .cse13) (<= .cse13 .cse2) (<= .cse2 .cse13))))) [2020-08-18 15:29:45,666 INFO L264 CegarLoopResult]: At program point L26-4(lines 26 28) the Hoare annotation is: (and (= |main_~#ad1~0.offset| 0) (= main_~i~0 (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* main_~i~0 8) |main_~#ad1~0.offset|)))) [2020-08-18 15:29:45,666 INFO L271 CegarLoopResult]: At program point checkENTRY(lines 9 12) the Hoare annotation is: true [2020-08-18 15:29:45,666 INFO L268 CegarLoopResult]: For program point checkFINAL(lines 9 12) no Hoare annotation was computed. [2020-08-18 15:29:45,666 INFO L268 CegarLoopResult]: For program point checkEXIT(lines 9 12) no Hoare annotation was computed. [2020-08-18 15:29:45,691 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,692 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,693 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,693 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,693 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,693 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,694 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,694 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,694 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,695 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,695 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,695 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,696 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,696 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,696 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,696 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,697 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,697 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,697 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,698 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,698 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,698 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,699 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,699 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,699 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,699 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,700 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,700 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,700 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,701 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,701 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,710 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,710 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,711 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,711 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,711 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,712 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,712 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,713 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,713 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,713 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,714 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,714 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,714 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,715 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,715 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,715 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,716 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,716 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,716 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,717 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,717 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,717 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,717 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,718 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,718 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,718 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,719 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,719 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,719 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,720 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,720 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 03:29:45 BoogieIcfgContainer [2020-08-18 15:29:45,724 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 15:29:45,726 INFO L168 Benchmark]: Toolchain (without parser) took 10897.11 ms. Allocated memory was 148.4 MB in the beginning and 300.9 MB in the end (delta: 152.6 MB). Free memory was 104.2 MB in the beginning and 101.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 154.8 MB. Max. memory is 7.1 GB. [2020-08-18 15:29:45,727 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 148.4 MB. Free memory was 122.8 MB in the beginning and 122.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 15:29:45,728 INFO L168 Benchmark]: CACSL2BoogieTranslator took 376.05 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 104.0 MB in the beginning and 183.3 MB in the end (delta: -79.4 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2020-08-18 15:29:45,729 INFO L168 Benchmark]: Boogie Preprocessor took 50.72 ms. Allocated memory is still 204.5 MB. Free memory was 183.3 MB in the beginning and 181.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-08-18 15:29:45,730 INFO L168 Benchmark]: RCFGBuilder took 297.67 ms. Allocated memory is still 204.5 MB. Free memory was 181.0 MB in the beginning and 166.9 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2020-08-18 15:29:45,730 INFO L168 Benchmark]: TraceAbstraction took 10167.55 ms. Allocated memory was 204.5 MB in the beginning and 300.9 MB in the end (delta: 96.5 MB). Free memory was 166.3 MB in the beginning and 101.9 MB in the end (delta: 64.4 MB). Peak memory consumption was 160.9 MB. Max. memory is 7.1 GB. [2020-08-18 15:29:45,734 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 148.4 MB. Free memory was 122.8 MB in the beginning and 122.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 376.05 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 104.0 MB in the beginning and 183.3 MB in the end (delta: -79.4 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 50.72 ms. Allocated memory is still 204.5 MB. Free memory was 183.3 MB in the beginning and 181.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 297.67 ms. Allocated memory is still 204.5 MB. Free memory was 181.0 MB in the beginning and 166.9 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10167.55 ms. Allocated memory was 204.5 MB in the beginning and 300.9 MB in the end (delta: 96.5 MB). Free memory was 166.3 MB in the beginning and 101.9 MB in the end (delta: 64.4 MB). Peak memory consumption was 160.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 36]: 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 - InvariantResult [Line: 26]: Loop Invariant [2020-08-18 15:29:45,750 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,750 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,753 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,753 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,753 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,754 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,754 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,754 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,755 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,755 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,755 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,755 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,757 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,758 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,758 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,758 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,758 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,759 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,759 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,759 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,759 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,760 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,760 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,760 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,760 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,760 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,761 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,768 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,768 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,768 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,768 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,770 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,771 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,771 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,771 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,771 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,772 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,772 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,772 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,772 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,772 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,773 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,773 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,773 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,773 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,774 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,774 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,774 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,774 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,774 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,774 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,775 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,775 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,775 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,775 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,775 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,776 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,776 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,776 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,776 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,776 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 15:29:45,776 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((((((((((((ad1 == 0 && i + 7 <= unknown-#memory_int-unknown[pa][pa]) && unknown-#memory_int-unknown[ad1][i * 8 + ad1 + 56] == i + 7) && unknown-#memory_int-unknown[pa][pa] <= i + 7) || (((ad1 == 0 && i + 4 == unknown-#memory_int-unknown[ad1][i * 8 + ad1 + 32]) && i + 4 <= unknown-#memory_int-unknown[pa][pa]) && unknown-#memory_int-unknown[pa][pa] <= i + 4)) || ((ad1 == 0 && unknown-#memory_int-unknown[pa][pa] <= i) && i == unknown-#memory_int-unknown[ad1][i * 8 + ad1])) || ((i + 10 == unknown-#memory_int-unknown[pa][pa] && ad1 == 0) && unknown-#memory_int-unknown[ad1][i * 8 + ad1 + 80] == i + 10)) || (((i + 3 == unknown-#memory_int-unknown[ad1][i * 8 + ad1 + 24] && ad1 == 0) && unknown-#memory_int-unknown[pa][pa] <= i + 3) && i + 3 <= unknown-#memory_int-unknown[pa][pa])) || (((ad1 == 0 && i + 8 <= unknown-#memory_int-unknown[pa][pa]) && i + 8 == unknown-#memory_int-unknown[ad1][i * 8 + ad1 + 64]) && unknown-#memory_int-unknown[pa][pa] <= i + 8)) || (((i + 1 <= unknown-#memory_int-unknown[pa][pa] && ad1 == 0) && unknown-#memory_int-unknown[ad1][i * 8 + ad1 + 8] == i + 1) && unknown-#memory_int-unknown[pa][pa] <= i + 1)) || (((unknown-#memory_int-unknown[pa][pa] <= i + 5 && ad1 == 0) && unknown-#memory_int-unknown[ad1][i * 8 + ad1 + 40] == i + 5) && i + 5 <= unknown-#memory_int-unknown[pa][pa])) || (((i + 9 <= unknown-#memory_int-unknown[pa][pa] && ad1 == 0) && unknown-#memory_int-unknown[ad1][i * 8 + ad1 + 72] == i + 9) && unknown-#memory_int-unknown[pa][pa] <= i + 9)) || (((ad1 == 0 && i + 2 <= unknown-#memory_int-unknown[pa][pa]) && i + 2 == unknown-#memory_int-unknown[ad1][i * 8 + ad1 + 16]) && unknown-#memory_int-unknown[pa][pa] <= i + 2)) || (((ad1 == 0 && unknown-#memory_int-unknown[ad1][i * 8 + ad1 + 48] == i + 6) && i + 6 <= unknown-#memory_int-unknown[pa][pa]) && unknown-#memory_int-unknown[pa][pa] <= i + 6) - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.2s, OverallIterations: 13, TraceHistogramMax: 12, AutomataDifference: 6.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 165 SDtfs, 122 SDslu, 661 SDs, 0 SdLazy, 896 SolverSat, 73 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 255 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 657 ImplicationChecksByTransitivity, 6.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 20 PreInvPairs, 32 NumberOfFragments, 406 HoareAnnotationTreeSize, 20 FomulaSimplifications, 343 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 1565 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 339 NumberOfCodeBlocks, 339 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 326 ConstructedInterpolants, 0 QuantifiedInterpolants, 68375 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 2 PerfectInterpolantSequences, 112/572 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...