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-lit/gsv2008.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 22:59:13,621 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 22:59:13,624 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 22:59:13,644 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 22:59:13,644 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 22:59:13,646 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 22:59:13,648 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 22:59:13,658 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 22:59:13,661 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 22:59:13,662 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 22:59:13,664 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 22:59:13,665 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 22:59:13,665 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 22:59:13,667 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 22:59:13,670 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 22:59:13,672 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 22:59:13,674 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 22:59:13,677 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 22:59:13,679 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 22:59:13,684 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 22:59:13,688 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 22:59:13,691 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 22:59:13,694 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 22:59:13,694 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 22:59:13,696 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 22:59:13,707 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 22:59:13,708 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 22:59:13,709 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 22:59:13,710 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 22:59:13,745 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 22:59:13,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 22:59:13,750 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 22:59:13,751 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 22:59:13,751 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 22:59:13,751 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 22:59:13,751 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 22:59:13,751 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 22:59:13,752 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 22:59:13,752 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 22:59:13,752 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 22:59:13,752 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 22:59:13,752 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 22:59:13,753 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 22:59:13,753 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 22:59:13,753 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 22:59:13,757 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 22:59:13,758 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 22:59:13,758 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 22:59:13,758 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 22:59:13,758 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 22:59:13,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 22:59:13,759 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 22:59:13,759 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 22:59:13,759 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 22:59:13,759 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 22:59:13,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 22:59:13,759 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 22:59:13,760 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 22:59:14,040 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 22:59:14,064 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 22:59:14,068 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 22:59:14,069 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 22:59:14,070 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 22:59:14,070 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.i [2019-10-13 22:59:14,160 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed745e900/aedaeedf1ca84371b1d1cb1a50bb5736/FLAGe1f5f3526 [2019-10-13 22:59:14,583 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 22:59:14,584 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.i [2019-10-13 22:59:14,590 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed745e900/aedaeedf1ca84371b1d1cb1a50bb5736/FLAGe1f5f3526 [2019-10-13 22:59:15,019 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed745e900/aedaeedf1ca84371b1d1cb1a50bb5736 [2019-10-13 22:59:15,027 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 22:59:15,028 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 22:59:15,029 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 22:59:15,030 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 22:59:15,033 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 22:59:15,034 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:59:15" (1/1) ... [2019-10-13 22:59:15,036 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34519ab4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:59:15, skipping insertion in model container [2019-10-13 22:59:15,037 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:59:15" (1/1) ... [2019-10-13 22:59:15,044 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 22:59:15,059 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 22:59:15,201 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:59:15,204 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 22:59:15,217 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:59:15,228 INFO L192 MainTranslator]: Completed translation [2019-10-13 22:59:15,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:59:15 WrapperNode [2019-10-13 22:59:15,228 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 22:59:15,229 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 22:59:15,229 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 22:59:15,229 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 22:59:15,315 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:59:15" (1/1) ... [2019-10-13 22:59:15,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:59:15" (1/1) ... [2019-10-13 22:59:15,322 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:59:15" (1/1) ... [2019-10-13 22:59:15,322 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:59:15" (1/1) ... [2019-10-13 22:59:15,328 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:59:15" (1/1) ... [2019-10-13 22:59:15,333 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:59:15" (1/1) ... [2019-10-13 22:59:15,334 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:59:15" (1/1) ... [2019-10-13 22:59:15,335 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 22:59:15,336 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 22:59:15,336 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 22:59:15,336 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 22:59:15,337 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:59:15" (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 22:59:15,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 22:59:15,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 22:59:15,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 22:59:15,391 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 22:59:15,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 22:59:15,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 22:59:15,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 22:59:15,392 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 22:59:15,392 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 22:59:15,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 22:59:15,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 22:59:15,626 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 22:59:15,626 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 22:59:15,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:59:15 BoogieIcfgContainer [2019-10-13 22:59:15,628 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 22:59:15,629 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 22:59:15,629 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 22:59:15,633 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 22:59:15,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:59:15" (1/3) ... [2019-10-13 22:59:15,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@116ca705 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:59:15, skipping insertion in model container [2019-10-13 22:59:15,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:59:15" (2/3) ... [2019-10-13 22:59:15,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@116ca705 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:59:15, skipping insertion in model container [2019-10-13 22:59:15,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:59:15" (3/3) ... [2019-10-13 22:59:15,644 INFO L109 eAbstractionObserver]: Analyzing ICFG gsv2008.i [2019-10-13 22:59:15,657 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 22:59:15,663 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 22:59:15,675 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 22:59:15,702 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 22:59:15,702 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 22:59:15,702 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 22:59:15,703 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 22:59:15,703 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 22:59:15,703 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 22:59:15,703 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 22:59:15,703 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 22:59:15,722 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-10-13 22:59:15,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-13 22:59:15,728 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:59:15,729 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:59:15,730 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:59:15,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:59:15,735 INFO L82 PathProgramCache]: Analyzing trace with hash 599047097, now seen corresponding path program 1 times [2019-10-13 22:59:15,742 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:59:15,742 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278419220] [2019-10-13 22:59:15,743 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:59:15,743 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:59:15,743 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:59:15,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:59:15,874 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 22:59:15,875 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278419220] [2019-10-13 22:59:15,876 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:59:15,877 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:59:15,877 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708044211] [2019-10-13 22:59:15,882 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:59:15,882 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:59:15,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:59:15,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:59:15,900 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2019-10-13 22:59:15,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:59:15,932 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2019-10-13 22:59:15,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:59:15,935 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-10-13 22:59:15,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:59:15,943 INFO L225 Difference]: With dead ends: 34 [2019-10-13 22:59:15,943 INFO L226 Difference]: Without dead ends: 13 [2019-10-13 22:59:15,946 INFO L600 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 [2019-10-13 22:59:15,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-10-13 22:59:15,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-10-13 22:59:15,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-10-13 22:59:15,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-10-13 22:59:15,983 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2019-10-13 22:59:15,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:59:15,984 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-10-13 22:59:15,984 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:59:15,984 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-10-13 22:59:15,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-13 22:59:15,985 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:59:15,985 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:59:15,985 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:59:15,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:59:15,986 INFO L82 PathProgramCache]: Analyzing trace with hash 705782190, now seen corresponding path program 1 times [2019-10-13 22:59:15,986 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:59:15,986 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310569787] [2019-10-13 22:59:15,987 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:59:15,987 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:59:15,987 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:59:16,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:59:16,217 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 22:59:16,218 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310569787] [2019-10-13 22:59:16,218 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914171513] [2019-10-13 22:59:16,218 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 22:59:16,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:59:16,258 INFO L256 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-13 22:59:16,264 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 22:59:16,316 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 22:59:16,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 22:59:16,359 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 22:59:16,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 22:59:16,428 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 22:59:16,429 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [7] total 13 [2019-10-13 22:59:16,429 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692076669] [2019-10-13 22:59:16,434 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 22:59:16,434 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:59:16,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 22:59:16,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-13 22:59:16,436 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 10 states. [2019-10-13 22:59:16,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:59:16,512 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2019-10-13 22:59:16,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 22:59:16,512 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 12 [2019-10-13 22:59:16,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:59:16,513 INFO L225 Difference]: With dead ends: 13 [2019-10-13 22:59:16,513 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 22:59:16,514 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2019-10-13 22:59:16,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 22:59:16,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 22:59:16,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 22:59:16,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 22:59:16,516 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2019-10-13 22:59:16,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:59:16,516 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 22:59:16,516 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 22:59:16,516 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 22:59:16,517 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 22:59:16,722 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 22:59:16,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 22:59:16,776 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-10-13 22:59:16,776 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-13 22:59:16,776 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-13 22:59:16,777 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-13 22:59:16,777 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-13 22:59:16,777 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-13 22:59:16,777 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 10 21) the Hoare annotation is: true [2019-10-13 22:59:16,777 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 21) no Hoare annotation was computed. [2019-10-13 22:59:16,777 INFO L443 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2019-10-13 22:59:16,778 INFO L443 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2019-10-13 22:59:16,778 INFO L439 ceAbstractionStarter]: At program point L15-2(lines 15 18) the Hoare annotation is: (or (<= (+ main_~x~0 50) 0) (<= (+ main_~x~0 2) main_~y~0)) [2019-10-13 22:59:16,778 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 10 21) no Hoare annotation was computed. [2019-10-13 22:59:16,778 INFO L439 ceAbstractionStarter]: At program point L15-3(lines 15 18) the Hoare annotation is: (and (<= (+ main_~x~0 2) main_~y~0) (<= 2 main_~y~0)) [2019-10-13 22:59:16,779 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-10-13 22:59:16,779 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-10-13 22:59:16,779 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-13 22:59:16,779 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-13 22:59:16,779 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-13 22:59:16,779 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-10-13 22:59:16,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:59:16 BoogieIcfgContainer [2019-10-13 22:59:16,793 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 22:59:16,796 INFO L168 Benchmark]: Toolchain (without parser) took 1766.50 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 103.7 MB in the beginning and 112.2 MB in the end (delta: -8.5 MB). Peak memory consumption was 54.9 MB. Max. memory is 7.1 GB. [2019-10-13 22:59:16,797 INFO L168 Benchmark]: CDTParser took 1.30 ms. Allocated memory is still 139.5 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-13 22:59:16,798 INFO L168 Benchmark]: CACSL2BoogieTranslator took 199.18 ms. Allocated memory is still 139.5 MB. Free memory was 103.5 MB in the beginning and 94.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2019-10-13 22:59:16,799 INFO L168 Benchmark]: Boogie Preprocessor took 106.74 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 94.2 MB in the beginning and 181.8 MB in the end (delta: -87.5 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2019-10-13 22:59:16,800 INFO L168 Benchmark]: RCFGBuilder took 292.24 ms. Allocated memory is still 202.9 MB. Free memory was 181.8 MB in the beginning and 169.9 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. [2019-10-13 22:59:16,801 INFO L168 Benchmark]: TraceAbstraction took 1164.37 ms. Allocated memory is still 202.9 MB. Free memory was 169.3 MB in the beginning and 112.2 MB in the end (delta: 57.0 MB). Peak memory consumption was 57.0 MB. Max. memory is 7.1 GB. [2019-10-13 22:59:16,805 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.30 ms. Allocated memory is still 139.5 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 199.18 ms. Allocated memory is still 139.5 MB. Free memory was 103.5 MB in the beginning and 94.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 106.74 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 94.2 MB in the beginning and 181.8 MB in the end (delta: -87.5 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 292.24 ms. Allocated memory is still 202.9 MB. Free memory was 181.8 MB in the beginning and 169.9 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1164.37 ms. Allocated memory is still 202.9 MB. Free memory was 169.3 MB in the beginning and 112.2 MB in the end (delta: 57.0 MB). Peak memory consumption was 57.0 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: x + 50 <= 0 || x + 2 <= y - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. Result: SAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 25 SDtfs, 5 SDslu, 46 SDs, 0 SdLazy, 29 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 8 PreInvPairs, 10 NumberOfFragments, 25 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 43 ConstructedInterpolants, 0 QuantifiedInterpolants, 1027 SizeOfPredicates, 5 NumberOfNonLiveVariables, 33 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 2/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...