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/loops/terminator_03-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 13:47:08,736 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 13:47:08,738 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 13:47:08,750 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 13:47:08,750 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 13:47:08,751 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 13:47:08,753 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 13:47:08,754 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 13:47:08,756 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 13:47:08,757 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 13:47:08,758 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 13:47:08,759 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 13:47:08,759 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 13:47:08,760 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 13:47:08,761 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 13:47:08,762 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 13:47:08,763 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 13:47:08,767 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 13:47:08,769 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 13:47:08,773 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 13:47:08,775 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 13:47:08,779 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 13:47:08,781 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 13:47:08,782 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 13:47:08,784 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-07 13:47:08,791 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 13:47:08,791 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 13:47:08,792 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 13:47:08,793 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 13:47:08,794 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 13:47:08,794 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 13:47:08,795 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 13:47:08,795 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 13:47:08,796 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 13:47:08,797 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 13:47:08,800 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 13:47:08,801 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 [2019-10-07 13:47:08,824 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 13:47:08,824 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 13:47:08,826 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 13:47:08,826 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 13:47:08,826 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 13:47:08,826 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 13:47:08,826 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 13:47:08,827 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 13:47:08,827 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 13:47:08,827 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 13:47:08,828 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 13:47:08,828 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 13:47:08,829 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 13:47:08,829 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 13:47:08,829 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 13:47:08,829 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 13:47:08,829 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 13:47:08,830 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 13:47:08,830 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 13:47:08,830 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 13:47:08,830 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 13:47:08,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 13:47:08,831 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 13:47:08,831 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 13:47:08,831 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 13:47:08,831 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 13:47:08,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 13:47:08,831 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 13:47:08,832 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 [2019-10-07 13:47:09,175 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 13:47:09,188 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 13:47:09,192 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 13:47:09,193 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 13:47:09,193 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 13:47:09,194 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/terminator_03-1.c [2019-10-07 13:47:09,265 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd5954dc3/a43c1fcd5f8b47b2a30aa5aa95fd8f74/FLAGdc71c8a0e [2019-10-07 13:47:09,701 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 13:47:09,702 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_03-1.c [2019-10-07 13:47:09,708 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd5954dc3/a43c1fcd5f8b47b2a30aa5aa95fd8f74/FLAGdc71c8a0e [2019-10-07 13:47:10,074 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd5954dc3/a43c1fcd5f8b47b2a30aa5aa95fd8f74 [2019-10-07 13:47:10,085 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 13:47:10,087 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 13:47:10,088 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 13:47:10,088 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 13:47:10,091 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 13:47:10,092 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:47:10" (1/1) ... [2019-10-07 13:47:10,095 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17ac78c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:47:10, skipping insertion in model container [2019-10-07 13:47:10,095 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:47:10" (1/1) ... [2019-10-07 13:47:10,102 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 13:47:10,120 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 13:47:10,302 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:47:10,313 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 13:47:10,333 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:47:10,348 INFO L192 MainTranslator]: Completed translation [2019-10-07 13:47:10,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:47:10 WrapperNode [2019-10-07 13:47:10,349 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 13:47:10,351 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 13:47:10,351 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 13:47:10,351 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 13:47:10,447 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:47:10" (1/1) ... [2019-10-07 13:47:10,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:47:10" (1/1) ... [2019-10-07 13:47:10,454 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:47:10" (1/1) ... [2019-10-07 13:47:10,456 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:47:10" (1/1) ... [2019-10-07 13:47:10,459 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:47:10" (1/1) ... [2019-10-07 13:47:10,464 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:47:10" (1/1) ... [2019-10-07 13:47:10,465 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:47:10" (1/1) ... [2019-10-07 13:47:10,466 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 13:47:10,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 13:47:10,467 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 13:47:10,467 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 13:47:10,468 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:47:10" (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 [2019-10-07 13:47:10,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 13:47:10,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 13:47:10,535 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-07 13:47:10,535 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 13:47:10,535 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 13:47:10,536 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-07 13:47:10,536 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 13:47:10,536 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 13:47:10,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 13:47:10,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 13:47:10,704 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 13:47:10,704 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 13:47:10,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:47:10 BoogieIcfgContainer [2019-10-07 13:47:10,705 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 13:47:10,707 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 13:47:10,707 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 13:47:10,710 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 13:47:10,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 01:47:10" (1/3) ... [2019-10-07 13:47:10,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54b7d4e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:47:10, skipping insertion in model container [2019-10-07 13:47:10,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:47:10" (2/3) ... [2019-10-07 13:47:10,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54b7d4e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:47:10, skipping insertion in model container [2019-10-07 13:47:10,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:47:10" (3/3) ... [2019-10-07 13:47:10,713 INFO L109 eAbstractionObserver]: Analyzing ICFG terminator_03-1.c [2019-10-07 13:47:10,723 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 13:47:10,731 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 13:47:10,742 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 13:47:10,776 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 13:47:10,776 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 13:47:10,777 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 13:47:10,777 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 13:47:10,777 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 13:47:10,777 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 13:47:10,778 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 13:47:10,778 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 13:47:10,803 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-10-07 13:47:10,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-07 13:47:10,810 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:47:10,811 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:47:10,813 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:47:10,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:47:10,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1712329921, now seen corresponding path program 1 times [2019-10-07 13:47:10,831 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:47:10,832 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:47:10,832 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:47:10,832 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:47:10,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:47:10,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:47:11,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:47:11,019 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:47:11,020 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:47:11,020 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 13:47:11,023 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 13:47:11,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 13:47:11,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 13:47:11,034 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 5 states. [2019-10-07 13:47:11,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:47:11,115 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2019-10-07 13:47:11,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 13:47:11,117 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-10-07 13:47:11,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:47:11,128 INFO L225 Difference]: With dead ends: 33 [2019-10-07 13:47:11,128 INFO L226 Difference]: Without dead ends: 12 [2019-10-07 13:47:11,131 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-07 13:47:11,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-10-07 13:47:11,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-10-07 13:47:11,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-10-07 13:47:11,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-10-07 13:47:11,174 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2019-10-07 13:47:11,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:47:11,174 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-10-07 13:47:11,175 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 13:47:11,175 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-10-07 13:47:11,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-07 13:47:11,177 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:47:11,177 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:47:11,179 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:47:11,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:47:11,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1145026399, now seen corresponding path program 1 times [2019-10-07 13:47:11,181 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:47:11,182 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:47:11,182 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:47:11,183 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:47:11,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:47:11,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-07 13:47:11,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-07 13:47:11,271 INFO L161 tionRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-10-07 13:47:11,271 INFO L451 BasicCegarLoop]: Counterexample might be feasible [2019-10-07 13:47:11,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 01:47:11 BoogieIcfgContainer [2019-10-07 13:47:11,304 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-07 13:47:11,308 INFO L168 Benchmark]: Toolchain (without parser) took 1218.86 ms. Allocated memory was 144.7 MB in the beginning and 199.2 MB in the end (delta: 54.5 MB). Free memory was 103.1 MB in the beginning and 138.6 MB in the end (delta: -35.5 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2019-10-07 13:47:11,309 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 144.7 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 13:47:11,312 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.55 ms. Allocated memory is still 144.7 MB. Free memory was 102.9 MB in the beginning and 93.7 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2019-10-07 13:47:11,315 INFO L168 Benchmark]: Boogie Preprocessor took 116.10 ms. Allocated memory was 144.7 MB in the beginning and 199.2 MB in the end (delta: 54.5 MB). Free memory was 93.7 MB in the beginning and 178.0 MB in the end (delta: -84.3 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2019-10-07 13:47:11,316 INFO L168 Benchmark]: RCFGBuilder took 238.64 ms. Allocated memory is still 199.2 MB. Free memory was 178.0 MB in the beginning and 166.3 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. [2019-10-07 13:47:11,317 INFO L168 Benchmark]: TraceAbstraction took 597.23 ms. Allocated memory is still 199.2 MB. Free memory was 165.7 MB in the beginning and 138.6 MB in the end (delta: 27.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2019-10-07 13:47:11,329 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 144.7 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 262.55 ms. Allocated memory is still 144.7 MB. Free memory was 102.9 MB in the beginning and 93.7 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 116.10 ms. Allocated memory was 144.7 MB in the beginning and 199.2 MB in the end (delta: 54.5 MB). Free memory was 93.7 MB in the beginning and 178.0 MB in the end (delta: -84.3 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 238.64 ms. Allocated memory is still 199.2 MB. Free memory was 178.0 MB in the beginning and 166.3 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 597.23 ms. Allocated memory is still 199.2 MB. Free memory was 165.7 MB in the beginning and 138.6 MB in the end (delta: 27.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L13] int x=__VERIFIER_nondet_int(); [L14] int y=__VERIFIER_nondet_int(); [L16] COND TRUE y>0 VAL [x=100, y=1] [L18] COND FALSE !(x<100) VAL [x=100, y=1] [L23] CALL __VERIFIER_assert(y<=0 || (y<0 && x>=100)) VAL [\old(cond)=0] [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L5] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 17 SDtfs, 7 SDslu, 45 SDs, 0 SdLazy, 14 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 153 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 incorrect! Received shutdown request...