/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-new/half.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 18:01:31,243 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-08-18 18:01:31,280 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 18:01:31,281 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 18:01:31,282 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 18:01:31,283 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 18:01:31,284 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 18:01:31,285 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 18:01:31,287 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 18:01:31,289 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 18:01:31,290 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 18:01:31,294 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 18:01:31,295 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 18:01:31,296 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 18:01:31,298 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 18:01:31,306 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 18:01:31,307 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 18:01:31,307 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 18:01:31,308 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 18:01:31,331 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 18:01:31,331 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 18:01:31,332 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 18:01:31,332 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 18:01:31,332 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 18:01:31,333 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 18:01:31,333 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 18:01:31,333 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 18:01:31,333 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 18:01:31,333 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 18:01:31,334 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 18:01:31,334 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 18:01:31,334 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 18:01:31,334 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 18:01:31,334 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 18:01:31,335 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 18:01:31,335 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 18:01:31,335 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 18:01:31,335 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 18:01:31,335 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 18:01:31,336 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 18:01:31,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 18:01:31,336 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 18:01:31,336 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 18:01:31,336 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 18:01:31,337 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 18:01:31,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 18:01:31,337 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 18:01:31,337 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 18:01:31,338 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=BIGGEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=BIGGEST; [2020-08-18 18:01:31,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 18:01:31,645 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 18:01:31,650 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 18:01:31,652 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 18:01:31,653 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 18:01:31,653 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/half.i [2020-08-18 18:01:31,723 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1c9b713af/6414bb71e31b4a32bc6bdd18bf35b85c/FLAGd2766bf93 [2020-08-18 18:01:32,131 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 18:01:32,133 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-new/half.i [2020-08-18 18:01:32,139 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1c9b713af/6414bb71e31b4a32bc6bdd18bf35b85c/FLAGd2766bf93 [2020-08-18 18:01:32,506 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1c9b713af/6414bb71e31b4a32bc6bdd18bf35b85c [2020-08-18 18:01:32,515 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 18:01:32,516 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 18:01:32,518 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 18:01:32,518 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 18:01:32,521 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 18:01:32,522 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:01:32" (1/1) ... [2020-08-18 18:01:32,525 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6267ef0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:01:32, skipping insertion in model container [2020-08-18 18:01:32,525 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:01:32" (1/1) ... [2020-08-18 18:01:32,533 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 18:01:32,548 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 18:01:32,709 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:01:32,713 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 18:01:32,726 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:01:32,739 INFO L208 MainTranslator]: Completed translation [2020-08-18 18:01:32,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:01:32 WrapperNode [2020-08-18 18:01:32,739 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 18:01:32,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 18:01:32,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 18:01:32,740 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 18:01:32,749 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:01:32" (1/1) ... [2020-08-18 18:01:32,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:01:32" (1/1) ... [2020-08-18 18:01:32,827 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:01:32" (1/1) ... [2020-08-18 18:01:32,827 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:01:32" (1/1) ... [2020-08-18 18:01:32,836 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:01:32" (1/1) ... [2020-08-18 18:01:32,842 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:01:32" (1/1) ... [2020-08-18 18:01:32,843 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:01:32" (1/1) ... [2020-08-18 18:01:32,845 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 18:01:32,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 18:01:32,845 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 18:01:32,845 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 18:01:32,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:01:32" (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 18:01:32,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 18:01:32,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 18:01:32,906 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 18:01:32,906 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-18 18:01:32,907 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 18:01:32,907 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 18:01:32,907 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 18:01:32,907 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 18:01:32,907 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-18 18:01:32,907 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 18:01:32,908 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 18:01:32,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 18:01:32,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 18:01:33,109 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 18:01:33,110 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-18 18:01:33,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:01:33 BoogieIcfgContainer [2020-08-18 18:01:33,116 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 18:01:33,117 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 18:01:33,117 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 18:01:33,120 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 18:01:33,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 06:01:32" (1/3) ... [2020-08-18 18:01:33,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@305c5ef1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:01:33, skipping insertion in model container [2020-08-18 18:01:33,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:01:32" (2/3) ... [2020-08-18 18:01:33,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@305c5ef1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:01:33, skipping insertion in model container [2020-08-18 18:01:33,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:01:33" (3/3) ... [2020-08-18 18:01:33,124 INFO L109 eAbstractionObserver]: Analyzing ICFG half.i [2020-08-18 18:01:33,134 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 18:01:33,141 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 18:01:33,156 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 18:01:33,179 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 18:01:33,179 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 18:01:33,179 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 18:01:33,179 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 18:01:33,180 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 18:01:33,180 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 18:01:33,180 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 18:01:33,180 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 18:01:33,197 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-08-18 18:01:33,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-08-18 18:01:33,202 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:01:33,203 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:01:33,204 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:01:33,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:01:33,208 INFO L82 PathProgramCache]: Analyzing trace with hash -961315073, now seen corresponding path program 1 times [2020-08-18 18:01:33,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:01:33,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [510519931] [2020-08-18 18:01:33,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:01:33,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:01:33,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:01:33,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:01:33,331 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 18:01:33,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [510519931] [2020-08-18 18:01:33,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:01:33,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-08-18 18:01:33,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117160922] [2020-08-18 18:01:33,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-08-18 18:01:33,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:01:33,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-08-18 18:01:33,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-08-18 18:01:33,356 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2020-08-18 18:01:33,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:01:33,378 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2020-08-18 18:01:33,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-08-18 18:01:33,380 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-08-18 18:01:33,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:01:33,387 INFO L225 Difference]: With dead ends: 33 [2020-08-18 18:01:33,388 INFO L226 Difference]: Without dead ends: 14 [2020-08-18 18:01:33,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-08-18 18:01:33,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-08-18 18:01:33,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-08-18 18:01:33,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-08-18 18:01:33,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2020-08-18 18:01:33,428 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2020-08-18 18:01:33,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:01:33,428 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2020-08-18 18:01:33,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-08-18 18:01:33,429 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2020-08-18 18:01:33,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-08-18 18:01:33,429 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:01:33,430 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:01:33,430 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 18:01:33,430 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:01:33,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:01:33,431 INFO L82 PathProgramCache]: Analyzing trace with hash -971473804, now seen corresponding path program 1 times [2020-08-18 18:01:33,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:01:33,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983548524] [2020-08-18 18:01:33,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:01:33,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:01:33,638 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2020-08-18 18:01:33,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:01:33,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:01:33,755 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 18:01:33,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983548524] [2020-08-18 18:01:33,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:01:33,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 18:01:33,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899142818] [2020-08-18 18:01:33,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 18:01:33,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:01:33,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 18:01:33,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-18 18:01:33,761 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 7 states. [2020-08-18 18:01:33,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:01:33,910 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2020-08-18 18:01:33,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 18:01:33,911 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-08-18 18:01:33,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:01:33,914 INFO L225 Difference]: With dead ends: 26 [2020-08-18 18:01:33,914 INFO L226 Difference]: Without dead ends: 21 [2020-08-18 18:01:33,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-08-18 18:01:33,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-08-18 18:01:33,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 15. [2020-08-18 18:01:33,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-08-18 18:01:33,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-08-18 18:01:33,923 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2020-08-18 18:01:33,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:01:33,923 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-08-18 18:01:33,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 18:01:33,924 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-08-18 18:01:33,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-18 18:01:33,925 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:01:33,925 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:01:33,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 18:01:33,929 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:01:33,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:01:33,930 INFO L82 PathProgramCache]: Analyzing trace with hash -18708286, now seen corresponding path program 1 times [2020-08-18 18:01:33,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:01:33,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890560201] [2020-08-18 18:01:33,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:01:33,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:01:34,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:01:34,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:01:34,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:01:34,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890560201] [2020-08-18 18:01:34,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:01:34,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-18 18:01:34,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084626447] [2020-08-18 18:01:34,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 18:01:34,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:01:34,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 18:01:34,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-18 18:01:34,098 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 7 states. [2020-08-18 18:01:34,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:01:34,174 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2020-08-18 18:01:34,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 18:01:34,175 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-08-18 18:01:34,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:01:34,176 INFO L225 Difference]: With dead ends: 26 [2020-08-18 18:01:34,176 INFO L226 Difference]: Without dead ends: 18 [2020-08-18 18:01:34,177 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-08-18 18:01:34,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-08-18 18:01:34,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-08-18 18:01:34,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-08-18 18:01:34,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-08-18 18:01:34,182 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 14 [2020-08-18 18:01:34,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:01:34,183 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-08-18 18:01:34,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 18:01:34,183 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-08-18 18:01:34,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-18 18:01:34,184 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:01:34,184 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:01:34,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 18:01:34,184 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:01:34,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:01:34,185 INFO L82 PathProgramCache]: Analyzing trace with hash 154986550, now seen corresponding path program 1 times [2020-08-18 18:01:34,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:01:34,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1551055988] [2020-08-18 18:01:34,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:01:34,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:01:34,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:01:34,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:01:34,480 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:01:34,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1551055988] [2020-08-18 18:01:34,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:01:34,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 18:01:34,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802563974] [2020-08-18 18:01:34,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 18:01:34,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:01:34,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 18:01:34,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-08-18 18:01:34,483 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 11 states. [2020-08-18 18:01:34,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:01:34,671 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2020-08-18 18:01:34,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 18:01:34,671 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 17 [2020-08-18 18:01:34,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:01:34,672 INFO L225 Difference]: With dead ends: 27 [2020-08-18 18:01:34,672 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 18:01:34,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2020-08-18 18:01:34,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 18:01:34,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 18:01:34,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 18:01:34,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 18:01:34,675 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-08-18 18:01:34,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:01:34,675 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 18:01:34,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 18:01:34,675 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 18:01:34,675 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 18:01:34,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 18:01:34,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 18:01:34,758 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-18 18:01:34,758 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-18 18:01:34,758 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-18 18:01:34,758 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-18 18:01:34,759 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-18 18:01:34,759 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-18 18:01:34,759 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-08-18 18:01:34,759 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-08-18 18:01:34,759 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-08-18 18:01:34,759 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-08-18 18:01:34,760 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 25) the Hoare annotation is: true [2020-08-18 18:01:34,760 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 25) no Hoare annotation was computed. [2020-08-18 18:01:34,760 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-08-18 18:01:34,760 INFO L268 CegarLoopResult]: For program point L19(lines 19 21) no Hoare annotation was computed. [2020-08-18 18:01:34,760 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-08-18 18:01:34,760 INFO L268 CegarLoopResult]: For program point L18-2(lines 18 22) no Hoare annotation was computed. [2020-08-18 18:01:34,761 INFO L264 CegarLoopResult]: At program point L18-3(lines 18 22) the Hoare annotation is: (let ((.cse0 (* 2 main_~n~0))) (let ((.cse2 (<= .cse0 main_~i~0)) (.cse3 (<= main_~i~0 .cse0))) (or (let ((.cse1 (+ main_~i~0 1))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (<= .cse1 (* 2 main_~k~0)))) (and .cse2 .cse3 (< main_~n~0 (+ main_~k~0 1))) (and (<= 0 main_~n~0) (<= main_~n~0 0) .cse2 .cse3)))) [2020-08-18 18:01:34,761 INFO L264 CegarLoopResult]: At program point L18-4(lines 18 22) the Hoare annotation is: (let ((.cse2 (* 2 main_~n~0))) (let ((.cse0 (<= main_~i~0 .cse2)) (.cse1 (<= main_~k~0 main_~n~0))) (or (and (<= 0 main_~n~0) (<= main_~n~0 0) .cse0 .cse1) (and (<= .cse2 main_~i~0) .cse0 .cse1 (< main_~n~0 (+ main_~k~0 1)))))) [2020-08-18 18:01:34,761 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 25) no Hoare annotation was computed. [2020-08-18 18:01:34,761 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-08-18 18:01:34,761 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-08-18 18:01:34,762 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-08-18 18:01:34,762 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-08-18 18:01:34,762 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-08-18 18:01:34,762 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-08-18 18:01:34,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 06:01:34 BoogieIcfgContainer [2020-08-18 18:01:34,780 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 18:01:34,782 INFO L168 Benchmark]: Toolchain (without parser) took 2265.89 ms. Allocated memory was 140.5 MB in the beginning and 233.8 MB in the end (delta: 93.3 MB). Free memory was 103.9 MB in the beginning and 156.6 MB in the end (delta: -52.7 MB). Peak memory consumption was 40.6 MB. Max. memory is 7.1 GB. [2020-08-18 18:01:34,783 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 18:01:34,784 INFO L168 Benchmark]: CACSL2BoogieTranslator took 222.14 ms. Allocated memory is still 140.5 MB. Free memory was 103.7 MB in the beginning and 94.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-08-18 18:01:34,786 INFO L168 Benchmark]: Boogie Preprocessor took 104.75 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 94.1 MB in the beginning and 182.6 MB in the end (delta: -88.4 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-08-18 18:01:34,786 INFO L168 Benchmark]: RCFGBuilder took 271.15 ms. Allocated memory is still 203.4 MB. Free memory was 181.9 MB in the beginning and 168.9 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-08-18 18:01:34,788 INFO L168 Benchmark]: TraceAbstraction took 1663.07 ms. Allocated memory was 203.4 MB in the beginning and 233.8 MB in the end (delta: 30.4 MB). Free memory was 168.3 MB in the beginning and 156.6 MB in the end (delta: 11.7 MB). Peak memory consumption was 42.1 MB. Max. memory is 7.1 GB. [2020-08-18 18:01:34,794 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 222.14 ms. Allocated memory is still 140.5 MB. Free memory was 103.7 MB in the beginning and 94.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 104.75 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 94.1 MB in the beginning and 182.6 MB in the end (delta: -88.4 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 271.15 ms. Allocated memory is still 203.4 MB. Free memory was 181.9 MB in the beginning and 168.9 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1663.07 ms. Allocated memory was 203.4 MB in the beginning and 233.8 MB in the end (delta: 30.4 MB). Free memory was 168.3 MB in the beginning and 156.6 MB in the end (delta: 11.7 MB). Peak memory consumption was 42.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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: 18]: Loop Invariant Derived loop invariant: (((2 * n <= i + 1 && i + 1 <= 2 * n) && i + 1 <= 2 * k) || ((2 * n <= i && i <= 2 * n) && n < k + 1)) || (((0 <= n && n <= 0) && 2 * n <= i) && i <= 2 * n) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.5s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 51 SDtfs, 25 SDslu, 128 SDs, 0 SdLazy, 144 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 11 PreInvPairs, 16 NumberOfFragments, 96 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 49 ConstructedInterpolants, 0 QuantifiedInterpolants, 3243 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 0/6 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...