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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/loop-new/half.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 22:59:28,505 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 22:59:28,507 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 22:59:28,524 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 22:59:28,525 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 22:59:28,527 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 22:59:28,528 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 22:59:28,537 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 22:59:28,542 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 22:59:28,544 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 22:59:28,546 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 22:59:28,547 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 22:59:28,547 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 22:59:28,549 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 22:59:28,551 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 22:59:28,552 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 22:59:28,553 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 22:59:28,554 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 22:59:28,555 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 22:59:28,559 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 22:59:28,564 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 22:59:28,567 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 22:59:28,568 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 22:59:28,569 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 22:59:28,571 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 22:59:28,577 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 22:59:28,578 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 22:59:28,579 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 22:59:28,580 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 [2019-10-13 22:59:28,593 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 22:59:28,593 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 22:59:28,594 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 22:59:28,595 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 22:59:28,595 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 22:59:28,595 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 22:59:28,595 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 22:59:28,595 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 22:59:28,596 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 22:59:28,596 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 22:59:28,596 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 22:59:28,596 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 22:59:28,596 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 22:59:28,596 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 22:59:28,597 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 22:59:28,597 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 22:59:28,597 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 22:59:28,597 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 22:59:28,597 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 22:59:28,598 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 22:59:28,598 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 22:59:28,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 22:59:28,598 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 22:59:28,598 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 22:59:28,598 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 22:59:28,599 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 22:59:28,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 22:59:28,599 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 22:59:28,599 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 22:59:28,878 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 22:59:28,890 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 22:59:28,894 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 22:59:28,895 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 22:59:28,895 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 22:59:28,896 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/half.i [2019-10-13 22:59:28,966 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1cfd018c/e1372dea43d343cbb9f1a5678a3f4ad3/FLAG61311581b [2019-10-13 22:59:29,379 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 22:59:29,380 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/half.i [2019-10-13 22:59:29,386 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1cfd018c/e1372dea43d343cbb9f1a5678a3f4ad3/FLAG61311581b [2019-10-13 22:59:29,797 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1cfd018c/e1372dea43d343cbb9f1a5678a3f4ad3 [2019-10-13 22:59:29,805 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 22:59:29,807 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 22:59:29,808 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 22:59:29,808 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 22:59:29,811 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 22:59:29,812 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:59:29" (1/1) ... [2019-10-13 22:59:29,815 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7450f311 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:59:29, skipping insertion in model container [2019-10-13 22:59:29,815 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:59:29" (1/1) ... [2019-10-13 22:59:29,822 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 22:59:29,839 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 22:59:29,997 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:59:30,000 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 22:59:30,015 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:59:30,028 INFO L192 MainTranslator]: Completed translation [2019-10-13 22:59:30,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:59:30 WrapperNode [2019-10-13 22:59:30,028 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 22:59:30,029 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 22:59:30,029 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 22:59:30,029 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 22:59:30,121 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:59:30" (1/1) ... [2019-10-13 22:59:30,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:59:30" (1/1) ... [2019-10-13 22:59:30,129 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:59:30" (1/1) ... [2019-10-13 22:59:30,130 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:59:30" (1/1) ... [2019-10-13 22:59:30,134 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:59:30" (1/1) ... [2019-10-13 22:59:30,139 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:59:30" (1/1) ... [2019-10-13 22:59:30,144 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:59:30" (1/1) ... [2019-10-13 22:59:30,146 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 22:59:30,146 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 22:59:30,146 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 22:59:30,147 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 22:59:30,147 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:59:30" (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 [2019-10-13 22:59:30,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 22:59:30,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 22:59:30,197 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 22:59:30,197 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 22:59:30,197 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 22:59:30,199 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 22:59:30,199 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 22:59:30,200 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 22:59:30,201 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 22:59:30,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 22:59:30,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 22:59:30,451 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 22:59:30,451 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 22:59:30,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:59:30 BoogieIcfgContainer [2019-10-13 22:59:30,453 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 22:59:30,462 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 22:59:30,463 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 22:59:30,466 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 22:59:30,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:59:29" (1/3) ... [2019-10-13 22:59:30,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b1ac91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:59:30, skipping insertion in model container [2019-10-13 22:59:30,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:59:30" (2/3) ... [2019-10-13 22:59:30,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b1ac91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:59:30, skipping insertion in model container [2019-10-13 22:59:30,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:59:30" (3/3) ... [2019-10-13 22:59:30,470 INFO L109 eAbstractionObserver]: Analyzing ICFG half.i [2019-10-13 22:59:30,480 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 22:59:30,502 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 22:59:30,514 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 22:59:30,536 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 22:59:30,536 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 22:59:30,536 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 22:59:30,536 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 22:59:30,536 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 22:59:30,536 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 22:59:30,537 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 22:59:30,537 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 22:59:30,553 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-10-13 22:59:30,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-13 22:59:30,557 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:59:30,558 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:59:30,560 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:59:30,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:59:30,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1974865403, now seen corresponding path program 1 times [2019-10-13 22:59:30,571 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:59:30,571 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876250850] [2019-10-13 22:59:30,571 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:59:30,572 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:59:30,572 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:59:30,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:59:30,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 22:59:30,896 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876250850] [2019-10-13 22:59:30,897 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:59:30,897 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 22:59:30,897 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655694196] [2019-10-13 22:59:30,902 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 22:59:30,902 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:59:30,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 22:59:30,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-13 22:59:30,918 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 7 states. [2019-10-13 22:59:31,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:59:31,079 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2019-10-13 22:59:31,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 22:59:31,081 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2019-10-13 22:59:31,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:59:31,091 INFO L225 Difference]: With dead ends: 39 [2019-10-13 22:59:31,091 INFO L226 Difference]: Without dead ends: 13 [2019-10-13 22:59:31,095 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-10-13 22:59:31,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-10-13 22:59:31,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-10-13 22:59:31,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-10-13 22:59:31,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-10-13 22:59:31,134 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2019-10-13 22:59:31,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:59:31,134 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-10-13 22:59:31,135 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 22:59:31,135 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-10-13 22:59:31,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-13 22:59:31,136 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:59:31,136 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:59:31,137 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:59:31,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:59:31,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1003106899, now seen corresponding path program 1 times [2019-10-13 22:59:31,138 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:59:31,138 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759000342] [2019-10-13 22:59:31,138 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:59:31,138 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:59:31,139 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:59:31,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:59:31,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 22:59:31,230 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759000342] [2019-10-13 22:59:31,230 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185758648] [2019-10-13 22:59:31,231 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 22:59:31,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:59:31,275 INFO L256 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 14 conjunts are in the unsatisfiable core [2019-10-13 22:59:31,282 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 22:59:31,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 22:59:31,354 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 22:59:31,456 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 22:59:31,634 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 23 [2019-10-13 22:59:31,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 22:59:31,655 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [919500289] [2019-10-13 22:59:31,689 INFO L162 IcfgInterpreter]: Started Sifa with 12 locations of interest [2019-10-13 22:59:31,689 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 22:59:31,717 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 22:59:31,730 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 22:59:31,731 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 22:59:31,809 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-10-13 22:59:32,032 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2019-10-13 22:59:32,056 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-10-13 22:59:32,059 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 22:59:32,059 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 22:59:32,059 INFO L193 IcfgInterpreter]: Reachable states at location L15-4 satisfy 94#(and (<= 0 (+ main_~k~0 1000000)) (<= 0 main_~n~0) (<= 0 main_~i~0) (not (< main_~i~0 (* 2 main_~k~0))) (<= main_~k~0 1000000)) [2019-10-13 22:59:32,060 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#true [2019-10-13 22:59:32,060 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#true [2019-10-13 22:59:32,060 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 123#true [2019-10-13 22:59:32,060 INFO L193 IcfgInterpreter]: Reachable states at location L15-3 satisfy 89#(and (<= 0 (+ main_~k~0 1000000)) (<= 0 main_~n~0) (<= 0 main_~i~0) (<= main_~k~0 1000000)) [2019-10-13 22:59:32,061 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 22:59:32,061 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initFINAL satisfy 118#true [2019-10-13 22:59:32,061 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 114#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) [2019-10-13 22:59:32,062 INFO L193 IcfgInterpreter]: Reachable states at location L5 satisfy 109#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) [2019-10-13 22:59:32,062 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 99#(and (or (and (<= 1 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1)) (and (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0))) (or (= |__VERIFIER_assert_#in~cond| 0) (= |__VERIFIER_assert_#in~cond| 1))) [2019-10-13 22:59:32,062 INFO L193 IcfgInterpreter]: Reachable states at location L14 satisfy 38#(and (= main_~n~0 0) (<= main_~k~0 2147483647) (<= 0 main_~n~0) (<= main_~n~0 0) (<= 0 (+ main_~k~0 2147483648)) (<= 0 main_~i~0) (<= main_~i~0 0) (= main_~i~0 0)) [2019-10-13 22:59:32,062 INFO L193 IcfgInterpreter]: Reachable states at location L4 satisfy 104#(and (or (and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) (and (<= 1 __VERIFIER_assert_~cond) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1) (<= |__VERIFIER_assert_#in~cond| 1))) (or (and (= |__VERIFIER_assert_#in~cond| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)))) [2019-10-13 22:59:32,269 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 22:59:32,269 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 7, 7] total 18 [2019-10-13 22:59:32,269 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824170622] [2019-10-13 22:59:32,272 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-13 22:59:32,272 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:59:32,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-13 22:59:32,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2019-10-13 22:59:32,273 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 18 states. [2019-10-13 22:59:32,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:59:32,544 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2019-10-13 22:59:32,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-13 22:59:32,545 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 12 [2019-10-13 22:59:32,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:59:32,546 INFO L225 Difference]: With dead ends: 23 [2019-10-13 22:59:32,546 INFO L226 Difference]: Without dead ends: 15 [2019-10-13 22:59:32,548 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2019-10-13 22:59:32,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-10-13 22:59:32,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-10-13 22:59:32,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-10-13 22:59:32,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2019-10-13 22:59:32,552 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2019-10-13 22:59:32,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:59:32,553 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2019-10-13 22:59:32,553 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-13 22:59:32,553 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2019-10-13 22:59:32,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-13 22:59:32,554 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:59:32,554 INFO L380 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:59:32,763 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 22:59:32,764 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:59:32,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:59:32,764 INFO L82 PathProgramCache]: Analyzing trace with hash 908654765, now seen corresponding path program 2 times [2019-10-13 22:59:32,765 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:59:32,765 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809040744] [2019-10-13 22:59:32,766 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:59:32,766 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:59:32,766 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:59:32,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:59:32,862 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 22:59:32,862 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809040744] [2019-10-13 22:59:32,863 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554630876] [2019-10-13 22:59:32,863 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 22:59:32,913 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-10-13 22:59:32,913 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 22:59:32,915 INFO L256 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 21 conjunts are in the unsatisfiable core [2019-10-13 22:59:32,916 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 22:59:33,031 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 22:59:33,032 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 22:59:33,404 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 22:59:33,404 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1349956311] [2019-10-13 22:59:33,405 INFO L162 IcfgInterpreter]: Started Sifa with 12 locations of interest [2019-10-13 22:59:33,406 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 22:59:33,406 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 22:59:33,406 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 22:59:33,407 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 22:59:33,429 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-10-13 22:59:33,513 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2019-10-13 22:59:33,531 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-10-13 22:59:33,534 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 22:59:33,534 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 22:59:33,535 INFO L193 IcfgInterpreter]: Reachable states at location L15-4 satisfy 90#(and (<= 0 (+ main_~k~0 1000000)) (<= 0 main_~n~0) (<= 0 main_~i~0) (not (< main_~i~0 (* 2 main_~k~0))) (<= main_~k~0 1000000)) [2019-10-13 22:59:33,535 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#true [2019-10-13 22:59:33,535 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#true [2019-10-13 22:59:33,535 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 119#true [2019-10-13 22:59:33,536 INFO L193 IcfgInterpreter]: Reachable states at location L15-3 satisfy 85#(and (<= 0 (+ main_~k~0 1000000)) (<= 0 main_~n~0) (<= 0 main_~i~0) (<= main_~k~0 1000000)) [2019-10-13 22:59:33,536 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 22:59:33,536 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initFINAL satisfy 114#true [2019-10-13 22:59:33,536 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 110#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) [2019-10-13 22:59:33,537 INFO L193 IcfgInterpreter]: Reachable states at location L5 satisfy 105#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) [2019-10-13 22:59:33,537 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 95#(and (or (and (<= 1 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1)) (and (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0))) (or (= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| 0))) [2019-10-13 22:59:33,537 INFO L193 IcfgInterpreter]: Reachable states at location L14 satisfy 38#(and (= main_~n~0 0) (<= main_~k~0 2147483647) (<= 0 main_~n~0) (<= main_~n~0 0) (<= 0 (+ main_~k~0 2147483648)) (<= 0 main_~i~0) (<= main_~i~0 0) (= main_~i~0 0)) [2019-10-13 22:59:33,537 INFO L193 IcfgInterpreter]: Reachable states at location L4 satisfy 100#(and (or (and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) (and (<= 1 __VERIFIER_assert_~cond) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1) (<= |__VERIFIER_assert_#in~cond| 1))) (or (and (= |__VERIFIER_assert_#in~cond| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)))) [2019-10-13 22:59:33,757 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 22:59:33,757 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 9, 7] total 24 [2019-10-13 22:59:33,758 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455670153] [2019-10-13 22:59:33,758 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-10-13 22:59:33,759 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:59:33,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-10-13 22:59:33,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2019-10-13 22:59:33,760 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 24 states. [2019-10-13 22:59:34,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:59:34,270 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2019-10-13 22:59:34,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-10-13 22:59:34,270 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 14 [2019-10-13 22:59:34,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:59:34,271 INFO L225 Difference]: With dead ends: 27 [2019-10-13 22:59:34,271 INFO L226 Difference]: Without dead ends: 19 [2019-10-13 22:59:34,272 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=183, Invalid=939, Unknown=0, NotChecked=0, Total=1122 [2019-10-13 22:59:34,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-10-13 22:59:34,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-10-13 22:59:34,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-10-13 22:59:34,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2019-10-13 22:59:34,277 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 14 [2019-10-13 22:59:34,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:59:34,278 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2019-10-13 22:59:34,278 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-10-13 22:59:34,278 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2019-10-13 22:59:34,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-13 22:59:34,278 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:59:34,279 INFO L380 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:59:34,481 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 22:59:34,482 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:59:34,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:59:34,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1771893075, now seen corresponding path program 3 times [2019-10-13 22:59:34,483 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:59:34,484 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887934588] [2019-10-13 22:59:34,484 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:59:34,485 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:59:34,485 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:59:34,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:59:34,618 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 22:59:34,619 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887934588] [2019-10-13 22:59:34,619 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633292586] [2019-10-13 22:59:34,619 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 22:59:34,677 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-13 22:59:34,677 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 22:59:34,678 WARN L254 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 32 conjunts are in the unsatisfiable core [2019-10-13 22:59:34,679 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 22:59:34,895 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 22:59:34,895 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 22:59:35,917 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 22:59:35,918 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [488883693] [2019-10-13 22:59:35,920 INFO L162 IcfgInterpreter]: Started Sifa with 12 locations of interest [2019-10-13 22:59:35,920 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 22:59:35,920 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 22:59:35,921 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 22:59:35,921 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 22:59:35,937 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-10-13 22:59:36,027 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2019-10-13 22:59:36,064 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-10-13 22:59:36,066 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 22:59:36,067 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 22:59:36,067 INFO L193 IcfgInterpreter]: Reachable states at location L15-4 satisfy 90#(and (<= 0 (+ main_~k~0 1000000)) (<= 0 main_~n~0) (<= 0 main_~i~0) (not (< main_~i~0 (* 2 main_~k~0))) (<= main_~k~0 1000000)) [2019-10-13 22:59:36,067 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#true [2019-10-13 22:59:36,067 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#true [2019-10-13 22:59:36,068 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 119#true [2019-10-13 22:59:36,068 INFO L193 IcfgInterpreter]: Reachable states at location L15-3 satisfy 85#(and (<= 0 (+ main_~k~0 1000000)) (<= 0 main_~n~0) (<= 0 main_~i~0) (<= main_~k~0 1000000)) [2019-10-13 22:59:36,068 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 22:59:36,068 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initFINAL satisfy 114#true [2019-10-13 22:59:36,069 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 110#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) [2019-10-13 22:59:36,069 INFO L193 IcfgInterpreter]: Reachable states at location L5 satisfy 105#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) [2019-10-13 22:59:36,069 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 95#(and (or (and (<= 1 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1)) (and (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0))) (or (= |__VERIFIER_assert_#in~cond| 0) (= |__VERIFIER_assert_#in~cond| 1))) [2019-10-13 22:59:36,069 INFO L193 IcfgInterpreter]: Reachable states at location L14 satisfy 38#(and (= main_~n~0 0) (<= main_~k~0 2147483647) (<= 0 main_~n~0) (<= main_~n~0 0) (<= 0 (+ main_~k~0 2147483648)) (<= 0 main_~i~0) (<= main_~i~0 0) (= main_~i~0 0)) [2019-10-13 22:59:36,070 INFO L193 IcfgInterpreter]: Reachable states at location L4 satisfy 100#(and (or (and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) (and (<= 1 __VERIFIER_assert_~cond) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1) (<= |__VERIFIER_assert_#in~cond| 1))) (or (and (= |__VERIFIER_assert_#in~cond| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)))) [2019-10-13 22:59:36,362 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 22:59:36,362 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 13, 7] total 36 [2019-10-13 22:59:36,363 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539831578] [2019-10-13 22:59:36,364 INFO L442 AbstractCegarLoop]: Interpolant automaton has 36 states [2019-10-13 22:59:36,364 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:59:36,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2019-10-13 22:59:36,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1077, Unknown=0, NotChecked=0, Total=1260 [2019-10-13 22:59:36,366 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 36 states. [2019-10-13 22:59:37,126 WARN L191 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 49 [2019-10-13 22:59:37,295 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 41 [2019-10-13 22:59:37,436 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 30 [2019-10-13 22:59:37,638 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 44 [2019-10-13 22:59:37,853 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 36 [2019-10-13 22:59:38,078 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 39 [2019-10-13 22:59:38,353 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 34 [2019-10-13 22:59:38,612 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 30 [2019-10-13 22:59:38,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:59:38,636 INFO L93 Difference]: Finished difference Result 31 states and 40 transitions. [2019-10-13 22:59:38,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-10-13 22:59:38,636 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 18 [2019-10-13 22:59:38,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:59:38,637 INFO L225 Difference]: With dead ends: 31 [2019-10-13 22:59:38,637 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 22:59:38,639 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 622 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=528, Invalid=2552, Unknown=0, NotChecked=0, Total=3080 [2019-10-13 22:59:38,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 22:59:38,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 22:59:38,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 22:59:38,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 22:59:38,640 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2019-10-13 22:59:38,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:59:38,640 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 22:59:38,640 INFO L463 AbstractCegarLoop]: Interpolant automaton has 36 states. [2019-10-13 22:59:38,641 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 22:59:38,641 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 22:59:38,844 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 22:59:38,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 22:59:38,994 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-10-13 22:59:38,994 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-13 22:59:38,994 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-13 22:59:38,995 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-13 22:59:38,995 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-13 22:59:38,995 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-13 22:59:38,995 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 10 22) the Hoare annotation is: true [2019-10-13 22:59:38,995 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 22) no Hoare annotation was computed. [2019-10-13 22:59:38,995 INFO L443 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2019-10-13 22:59:38,995 INFO L443 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2019-10-13 22:59:38,996 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 10 22) no Hoare annotation was computed. [2019-10-13 22:59:38,996 INFO L439 ceAbstractionStarter]: At program point L15-3(lines 15 19) the Hoare annotation is: (let ((.cse0 (* main_~i~0 (- 1)))) (and (<= 0 (+ main_~k~0 1000000)) (<= 0 main_~i~0) (or (= main_~n~0 main_~k~0) (< main_~i~0 (* 2 main_~k~0)) (< main_~k~0 0)) (<= main_~k~0 1000000) (< (+ main_~n~0 2) (div (+ .cse0 (- 6)) (- 2))) (< (div (+ .cse0 (- 8)) (- 2)) (+ main_~n~0 5)))) [2019-10-13 22:59:38,996 INFO L439 ceAbstractionStarter]: At program point L15-4(lines 15 19) the Hoare annotation is: (or (and (or (<= main_~n~0 0) (< main_~n~0 (+ main_~k~0 1))) (<= main_~k~0 main_~n~0)) (and (<= 0 main_~n~0) (<= 0 (+ main_~k~0 1000000)) (<= 0 main_~i~0) (< main_~k~0 0))) [2019-10-13 22:59:38,996 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-10-13 22:59:38,996 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-10-13 22:59:38,997 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-13 22:59:38,997 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-13 22:59:38,997 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-13 22:59:38,997 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-10-13 22:59:39,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:59:39 BoogieIcfgContainer [2019-10-13 22:59:39,014 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 22:59:39,015 INFO L168 Benchmark]: Toolchain (without parser) took 9208.86 ms. Allocated memory was 136.3 MB in the beginning and 305.1 MB in the end (delta: 168.8 MB). Free memory was 101.3 MB in the beginning and 154.1 MB in the end (delta: -52.8 MB). Peak memory consumption was 116.0 MB. Max. memory is 7.1 GB. [2019-10-13 22:59:39,016 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 136.3 MB. Free memory was 119.6 MB in the beginning and 119.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-10-13 22:59:39,017 INFO L168 Benchmark]: CACSL2BoogieTranslator took 221.17 ms. Allocated memory is still 136.3 MB. Free memory was 101.1 MB in the beginning and 92.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2019-10-13 22:59:39,018 INFO L168 Benchmark]: Boogie Preprocessor took 117.00 ms. Allocated memory was 136.3 MB in the beginning and 200.3 MB in the end (delta: 64.0 MB). Free memory was 91.8 MB in the beginning and 178.5 MB in the end (delta: -86.7 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2019-10-13 22:59:39,019 INFO L168 Benchmark]: RCFGBuilder took 306.99 ms. Allocated memory is still 200.3 MB. Free memory was 178.5 MB in the beginning and 164.6 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2019-10-13 22:59:39,019 INFO L168 Benchmark]: TraceAbstraction took 8551.30 ms. Allocated memory was 200.3 MB in the beginning and 305.1 MB in the end (delta: 104.9 MB). Free memory was 163.9 MB in the beginning and 154.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 114.6 MB. Max. memory is 7.1 GB. [2019-10-13 22:59:39,023 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 136.3 MB. Free memory was 119.6 MB in the beginning and 119.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 221.17 ms. Allocated memory is still 136.3 MB. Free memory was 101.1 MB in the beginning and 92.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.00 ms. Allocated memory was 136.3 MB in the beginning and 200.3 MB in the end (delta: 64.0 MB). Free memory was 91.8 MB in the beginning and 178.5 MB in the end (delta: -86.7 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 306.99 ms. Allocated memory is still 200.3 MB. Free memory was 178.5 MB in the beginning and 164.6 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8551.30 ms. Allocated memory was 200.3 MB in the beginning and 305.1 MB in the end (delta: 104.9 MB). Free memory was 163.9 MB in the beginning and 154.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 114.6 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: 15]: Loop Invariant Derived loop invariant: ((((0 <= k + 1000000 && 0 <= i) && ((n == k || i < 2 * k) || k < 0)) && k <= 1000000) && n + 2 < (i * -1 + -6) / -2) && (i * -1 + -8) / -2 < n + 5 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. Result: SAFE, OverallTime: 8.4s, OverallIterations: 4, TraceHistogramMax: 7, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 36 SDtfs, 71 SDslu, 318 SDs, 0 SdLazy, 413 SolverSat, 89 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 197 GetRequests, 76 SyntacticMatches, 6 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 916 ImplicationChecksByTransitivity, 5.4s 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 DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 13 PreInvPairs, 32 NumberOfFragments, 80 HoareAnnotationTreeSize, 13 FomulaSimplifications, 639 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 441 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 133 ConstructedInterpolants, 0 QuantifiedInterpolants, 15273 SizeOfPredicates, 9 NumberOfNonLiveVariables, 140 ConjunctsInSsa, 67 ConjunctsInUnsatCore, 10 InterpolantComputations, 1 PerfectInterpolantSequences, 0/105 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: OVERALL_TIME[ms]: 656, ICFG_INTERPRETER_ENTERED_PROCEDURES: 12, DAG_INTERPRETER_EARLY_EXIT_QUERIES: 66, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 33, TOOLS_POST_TIME[ms]: 38, TOOLS_POST_CALL_APPLICATIONS: 15, TOOLS_POST_CALL_TIME[ms]: 15, TOOLS_POST_RETURN_APPLICATIONS: 6, TOOLS_POST_RETURN_TIME[ms]: 1, TOOLS_QUANTIFIERELIM_APPLICATIONS: 54, TOOLS_QUANTIFIERELIM_TIME[ms]: 43, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 6, FLUID_QUERY_TIME[ms]: 4, FLUID_QUERIES: 75, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 57, DOMAIN_JOIN_TIME[ms]: 379, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 6, DOMAIN_WIDEN_TIME[ms]: 54, DOMAIN_ISSUBSETEQ_APPLICATIONS: 9, DOMAIN_ISSUBSETEQ_TIME[ms]: 17, DOMAIN_ISBOTTOM_APPLICATIONS: 3, DOMAIN_ISBOTTOM_TIME[ms]: 11, LOOP_SUMMARIZER_APPLICATIONS: 3, LOOP_SUMMARIZER_CACHE_MISSES: 3, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 263, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 262, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 9, CALL_SUMMARIZER_APPLICATIONS: 6, CALL_SUMMARIZER_CACHE_MISSES: 3, CALL_SUMMARIZER_OVERALL_TIME[ms]: 16, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 15, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 10, PATH_EXPR_TIME[ms]: 5, REGEX_TO_DAG_TIME[ms]: 4, DAG_COMPRESSION_TIME[ms]: 31, DAG_COMPRESSION_PROCESSED_NODES: 186, DAG_COMPRESSION_RETAINED_NODES: 129, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...