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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/cggmp2005_variant.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 12:58:24,282 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 12:58:24,284 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 12:58:24,296 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 12:58:24,296 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 12:58:24,297 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 12:58:24,298 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 12:58:24,300 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 12:58:24,302 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 12:58:24,303 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 12:58:24,304 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 12:58:24,305 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 12:58:24,306 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 12:58:24,307 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 12:58:24,308 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 12:58:24,309 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 12:58:24,310 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 12:58:24,311 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 12:58:24,313 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 12:58:24,315 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 12:58:24,317 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 12:58:24,318 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 12:58:24,319 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 12:58:24,320 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 12:58:24,323 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-20 12:58:24,331 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 12:58:24,331 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 12:58:24,332 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 12:58:24,333 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-20 12:58:24,348 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 12:58:24,348 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 12:58:24,350 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-20 12:58:24,350 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-20 12:58:24,350 INFO L138 SettingsManager]: * Use SBE=true [2019-09-20 12:58:24,350 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 12:58:24,351 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 12:58:24,351 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-20 12:58:24,351 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 12:58:24,351 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 12:58:24,351 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 12:58:24,352 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 12:58:24,352 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 12:58:24,352 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 12:58:24,352 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 12:58:24,352 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-20 12:58:24,353 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 12:58:24,353 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 12:58:24,353 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 12:58:24,353 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-20 12:58:24,353 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-20 12:58:24,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 12:58:24,354 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 12:58:24,354 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 12:58:24,354 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-20 12:58:24,354 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-20 12:58:24,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 12:58:24,355 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-20 12:58:24,355 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 12:58:24,383 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 12:58:24,396 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 12:58:24,400 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 12:58:24,402 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 12:58:24,402 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 12:58:24,403 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/cggmp2005_variant.i [2019-09-20 12:58:24,486 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d357e50e/bb4443988e3444cc9e4ca15316a7fca4/FLAG5bbc89738 [2019-09-20 12:58:24,965 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 12:58:24,967 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/cggmp2005_variant.i [2019-09-20 12:58:24,973 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d357e50e/bb4443988e3444cc9e4ca15316a7fca4/FLAG5bbc89738 [2019-09-20 12:58:25,305 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d357e50e/bb4443988e3444cc9e4ca15316a7fca4 [2019-09-20 12:58:25,317 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 12:58:25,319 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 12:58:25,322 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 12:58:25,322 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 12:58:25,326 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 12:58:25,327 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 12:58:25" (1/1) ... [2019-09-20 12:58:25,329 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cfd99f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:25, skipping insertion in model container [2019-09-20 12:58:25,330 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 12:58:25" (1/1) ... [2019-09-20 12:58:25,338 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 12:58:25,356 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 12:58:25,569 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 12:58:25,574 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 12:58:25,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 12:58:25,602 INFO L192 MainTranslator]: Completed translation [2019-09-20 12:58:25,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:25 WrapperNode [2019-09-20 12:58:25,602 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 12:58:25,603 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 12:58:25,603 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 12:58:25,603 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 12:58:25,701 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:25" (1/1) ... [2019-09-20 12:58:25,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:25" (1/1) ... [2019-09-20 12:58:25,708 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:25" (1/1) ... [2019-09-20 12:58:25,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:25" (1/1) ... [2019-09-20 12:58:25,711 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:25" (1/1) ... [2019-09-20 12:58:25,716 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:25" (1/1) ... [2019-09-20 12:58:25,717 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:25" (1/1) ... [2019-09-20 12:58:25,719 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 12:58:25,719 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 12:58:25,720 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 12:58:25,720 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 12:58:25,721 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2019-09-20 12:58:25,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 12:58:25,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 12:58:25,778 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-20 12:58:25,778 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 12:58:25,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 12:58:25,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-20 12:58:25,779 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-20 12:58:25,779 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 12:58:25,779 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 12:58:25,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 12:58:25,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 12:58:25,956 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 12:58:25,956 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-20 12:58:25,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 12:58:25 BoogieIcfgContainer [2019-09-20 12:58:25,958 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 12:58:25,959 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 12:58:25,959 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 12:58:25,961 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 12:58:25,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 12:58:25" (1/3) ... [2019-09-20 12:58:25,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a55164 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 12:58:25, skipping insertion in model container [2019-09-20 12:58:25,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:25" (2/3) ... [2019-09-20 12:58:25,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a55164 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 12:58:25, skipping insertion in model container [2019-09-20 12:58:25,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 12:58:25" (3/3) ... [2019-09-20 12:58:25,965 INFO L109 eAbstractionObserver]: Analyzing ICFG cggmp2005_variant.i [2019-09-20 12:58:25,973 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 12:58:25,981 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 12:58:25,997 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 12:58:26,028 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-20 12:58:26,029 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 12:58:26,029 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-20 12:58:26,029 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 12:58:26,029 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 12:58:26,029 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 12:58:26,030 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 12:58:26,030 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 12:58:26,030 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 12:58:26,048 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-09-20 12:58:26,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-09-20 12:58:26,054 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 12:58:26,055 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 12:58:26,057 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 12:58:26,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 12:58:26,061 INFO L82 PathProgramCache]: Analyzing trace with hash 578729635, now seen corresponding path program 1 times [2019-09-20 12:58:26,063 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 12:58:26,063 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 12:58:26,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:58:26,106 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 12:58:26,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:58:26,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 12:58:26,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 12:58:26,178 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 12:58:26,178 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 12:58:26,182 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 12:58:26,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 12:58:26,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 12:58:26,195 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2019-09-20 12:58:26,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 12:58:26,214 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2019-09-20 12:58:26,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 12:58:26,215 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-09-20 12:58:26,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 12:58:26,222 INFO L225 Difference]: With dead ends: 31 [2019-09-20 12:58:26,222 INFO L226 Difference]: Without dead ends: 12 [2019-09-20 12:58:26,226 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 12:58:26,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-09-20 12:58:26,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-09-20 12:58:26,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-09-20 12:58:26,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-09-20 12:58:26,265 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 11 [2019-09-20 12:58:26,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 12:58:26,266 INFO L475 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-09-20 12:58:26,266 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 12:58:26,266 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-09-20 12:58:26,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-09-20 12:58:26,267 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 12:58:26,267 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 12:58:26,267 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 12:58:26,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 12:58:26,268 INFO L82 PathProgramCache]: Analyzing trace with hash 575035551, now seen corresponding path program 1 times [2019-09-20 12:58:26,268 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 12:58:26,268 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 12:58:26,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:58:26,270 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 12:58:26,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:58:26,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 12:58:26,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 12:58:26,308 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 12:58:26,308 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 12:58:26,309 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 12:58:26,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 12:58:26,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 12:58:26,310 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2019-09-20 12:58:26,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 12:58:26,343 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2019-09-20 12:58:26,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 12:58:26,344 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-09-20 12:58:26,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 12:58:26,345 INFO L225 Difference]: With dead ends: 18 [2019-09-20 12:58:26,345 INFO L226 Difference]: Without dead ends: 13 [2019-09-20 12:58:26,347 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 12:58:26,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-09-20 12:58:26,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-09-20 12:58:26,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-09-20 12:58:26,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-09-20 12:58:26,351 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2019-09-20 12:58:26,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 12:58:26,352 INFO L475 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-09-20 12:58:26,352 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 12:58:26,352 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-09-20 12:58:26,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-09-20 12:58:26,353 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 12:58:26,353 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 12:58:26,353 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 12:58:26,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 12:58:26,354 INFO L82 PathProgramCache]: Analyzing trace with hash 681770644, now seen corresponding path program 1 times [2019-09-20 12:58:26,354 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 12:58:26,354 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 12:58:26,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:58:26,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 12:58:26,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:58:26,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 12:58:26,605 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 11 [2019-09-20 12:58:26,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 12:58:26,685 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 12:58:26,686 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-20 12:58:26,707 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 12:58:26,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 12:58:26,725 INFO L256 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 17 conjunts are in the unsatisfiable core [2019-09-20 12:58:26,731 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 12:58:26,918 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 12:58:26,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 12:58:26,981 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 12:58:26,982 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2019-09-20 12:58:26,982 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-20 12:58:26,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-20 12:58:26,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-09-20 12:58:26,983 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 13 states. [2019-09-20 12:58:27,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 12:58:27,094 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2019-09-20 12:58:27,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 12:58:27,095 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2019-09-20 12:58:27,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 12:58:27,096 INFO L225 Difference]: With dead ends: 19 [2019-09-20 12:58:27,096 INFO L226 Difference]: Without dead ends: 14 [2019-09-20 12:58:27,097 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2019-09-20 12:58:27,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-09-20 12:58:27,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-09-20 12:58:27,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-09-20 12:58:27,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2019-09-20 12:58:27,102 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2019-09-20 12:58:27,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 12:58:27,102 INFO L475 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2019-09-20 12:58:27,103 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-20 12:58:27,103 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2019-09-20 12:58:27,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-20 12:58:27,103 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 12:58:27,104 INFO L407 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 12:58:27,104 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 12:58:27,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 12:58:27,104 INFO L82 PathProgramCache]: Analyzing trace with hash -304408769, now seen corresponding path program 2 times [2019-09-20 12:58:27,105 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 12:58:27,105 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 12:58:27,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:58:27,106 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 12:58:27,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:58:27,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 12:58:27,262 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 12:58:27,263 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 12:58:27,263 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-20 12:58:27,291 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 12:58:27,312 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-20 12:58:27,312 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-20 12:58:27,313 WARN L254 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 23 conjunts are in the unsatisfiable core [2019-09-20 12:58:27,315 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 12:58:27,448 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 12:58:27,496 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 12:58:27,500 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 12:58:27,500 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2019-09-20 12:58:27,501 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-20 12:58:27,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-20 12:58:27,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2019-09-20 12:58:27,502 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 14 states. [2019-09-20 12:58:27,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 12:58:27,751 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2019-09-20 12:58:27,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-20 12:58:27,752 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 13 [2019-09-20 12:58:27,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 12:58:27,752 INFO L225 Difference]: With dead ends: 16 [2019-09-20 12:58:27,753 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 12:58:27,754 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2019-09-20 12:58:27,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 12:58:27,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 12:58:27,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 12:58:27,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 12:58:27,755 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2019-09-20 12:58:27,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 12:58:27,755 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 12:58:27,755 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-20 12:58:27,756 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 12:58:27,756 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 12:58:27,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-20 12:58:27,949 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-09-20 12:58:27,950 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-09-20 12:58:27,950 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-09-20 12:58:27,950 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-09-20 12:58:27,950 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-09-20 12:58:27,950 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-09-20 12:58:27,950 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 10 23) the Hoare annotation is: true [2019-09-20 12:58:27,951 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 23) no Hoare annotation was computed. [2019-09-20 12:58:27,951 INFO L443 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2019-09-20 12:58:27,951 INFO L443 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2019-09-20 12:58:27,951 INFO L439 ceAbstractionStarter]: At program point L16-2(lines 16 20) the Hoare annotation is: (let ((.cse0 (+ (* 2 main_~mid~0) main_~lo~0))) (and (<= .cse0 main_~hi~0) (<= main_~hi~0 .cse0) (<= main_~lo~0 main_~hi~0))) [2019-09-20 12:58:27,952 INFO L439 ceAbstractionStarter]: At program point L16-3(lines 16 20) the Hoare annotation is: (or (let ((.cse1 (+ main_~hi~0 1))) (let ((.cse0 (div .cse1 2))) (and (<= main_~lo~0 1) (<= .cse0 (+ main_~mid~0 1)) (<= .cse0 1) (<= 1 main_~lo~0) (= 0 (mod .cse1 2)) (< 0 .cse0)))) (let ((.cse2 (+ (* 2 main_~mid~0) main_~lo~0))) (and (<= .cse2 main_~hi~0) (<= main_~hi~0 main_~lo~0) (<= main_~hi~0 .cse2) (<= main_~lo~0 main_~hi~0)))) [2019-09-20 12:58:27,953 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 10 23) no Hoare annotation was computed. [2019-09-20 12:58:27,953 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-09-20 12:58:27,953 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-09-20 12:58:27,953 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-09-20 12:58:27,954 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-09-20 12:58:27,954 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-09-20 12:58:27,954 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-09-20 12:58:27,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 12:58:27 BoogieIcfgContainer [2019-09-20 12:58:27,976 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 12:58:27,978 INFO L168 Benchmark]: Toolchain (without parser) took 2659.74 ms. Allocated memory was 140.0 MB in the beginning and 224.9 MB in the end (delta: 84.9 MB). Free memory was 87.5 MB in the beginning and 136.9 MB in the end (delta: -49.4 MB). Peak memory consumption was 35.5 MB. Max. memory is 7.1 GB. [2019-09-20 12:58:27,980 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 140.0 MB. Free memory was 105.9 MB in the beginning and 105.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 12:58:27,981 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.79 ms. Allocated memory is still 140.0 MB. Free memory was 87.3 MB in the beginning and 78.0 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2019-09-20 12:58:27,982 INFO L168 Benchmark]: Boogie Preprocessor took 116.05 ms. Allocated memory was 140.0 MB in the beginning and 200.3 MB in the end (delta: 60.3 MB). Free memory was 78.0 MB in the beginning and 178.3 MB in the end (delta: -100.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. [2019-09-20 12:58:27,983 INFO L168 Benchmark]: RCFGBuilder took 238.46 ms. Allocated memory is still 200.3 MB. Free memory was 178.3 MB in the beginning and 166.7 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. [2019-09-20 12:58:27,985 INFO L168 Benchmark]: TraceAbstraction took 2017.65 ms. Allocated memory was 200.3 MB in the beginning and 224.9 MB in the end (delta: 24.6 MB). Free memory was 166.1 MB in the beginning and 136.9 MB in the end (delta: 29.3 MB). Peak memory consumption was 53.9 MB. Max. memory is 7.1 GB. [2019-09-20 12:58:27,989 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 140.0 MB. Free memory was 105.9 MB in the beginning and 105.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 280.79 ms. Allocated memory is still 140.0 MB. Free memory was 87.3 MB in the beginning and 78.0 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 116.05 ms. Allocated memory was 140.0 MB in the beginning and 200.3 MB in the end (delta: 60.3 MB). Free memory was 78.0 MB in the beginning and 178.3 MB in the end (delta: -100.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 238.46 ms. Allocated memory is still 200.3 MB. Free memory was 178.3 MB in the beginning and 166.7 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2017.65 ms. Allocated memory was 200.3 MB in the beginning and 224.9 MB in the end (delta: 24.6 MB). Free memory was 166.1 MB in the beginning and 136.9 MB in the end (delta: 29.3 MB). Peak memory consumption was 53.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 16]: Loop Invariant Derived loop invariant: (2 * mid + lo <= hi && hi <= 2 * mid + lo) && lo <= hi - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. SAFE Result, 1.9s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 47 SDtfs, 11 SDslu, 108 SDs, 0 SdLazy, 90 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 11 PreInvPairs, 17 NumberOfFragments, 82 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 120 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 66 ConstructedInterpolants, 0 QuantifiedInterpolants, 3770 SizeOfPredicates, 6 NumberOfNonLiveVariables, 81 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 1/8 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...