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/ldv-regression/test_cut_trace.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 02:56:23,509 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 02:56:23,512 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 02:56:23,531 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 02:56:23,531 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 02:56:23,533 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 02:56:23,535 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 02:56:23,544 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 02:56:23,550 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 02:56:23,553 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 02:56:23,556 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 02:56:23,557 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 02:56:23,557 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 02:56:23,560 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 02:56:23,562 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 02:56:23,563 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 02:56:23,565 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 02:56:23,567 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 02:56:23,569 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 02:56:23,574 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 02:56:23,578 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 02:56:23,581 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 02:56:23,584 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 02:56:23,585 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 02:56:23,587 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 02:56:23,596 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 02:56:23,596 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 02:56:23,597 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 02:56:23,598 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 [2019-10-15 02:56:23,612 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 02:56:23,612 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 02:56:23,613 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 02:56:23,614 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 02:56:23,614 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 02:56:23,614 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 02:56:23,614 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 02:56:23,615 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 02:56:23,615 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 02:56:23,615 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 02:56:23,615 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 02:56:23,615 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 02:56:23,616 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 02:56:23,616 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 02:56:23,616 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 02:56:23,616 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 02:56:23,616 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 02:56:23,617 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 02:56:23,617 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 02:56:23,617 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 02:56:23,617 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 02:56:23,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 02:56:23,618 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 02:56:23,618 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 02:56:23,618 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 02:56:23,618 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 02:56:23,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 02:56:23,619 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 02:56:23,619 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 [2019-10-15 02:56:23,913 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 02:56:23,927 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 02:56:23,930 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 02:56:23,932 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 02:56:23,932 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 02:56:23,933 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test_cut_trace.i [2019-10-15 02:56:24,014 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b5e56465/0e92ab44f0d041b195b79f28d02c1aeb/FLAG95d0bdf15 [2019-10-15 02:56:24,429 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 02:56:24,430 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test_cut_trace.i [2019-10-15 02:56:24,436 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b5e56465/0e92ab44f0d041b195b79f28d02c1aeb/FLAG95d0bdf15 [2019-10-15 02:56:24,863 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b5e56465/0e92ab44f0d041b195b79f28d02c1aeb [2019-10-15 02:56:24,873 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 02:56:24,875 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 02:56:24,876 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 02:56:24,877 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 02:56:24,881 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 02:56:24,882 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:56:24" (1/1) ... [2019-10-15 02:56:24,884 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46c0d6a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:24, skipping insertion in model container [2019-10-15 02:56:24,885 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:56:24" (1/1) ... [2019-10-15 02:56:24,893 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 02:56:24,913 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 02:56:25,119 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 02:56:25,123 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 02:56:25,136 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 02:56:25,148 INFO L192 MainTranslator]: Completed translation [2019-10-15 02:56:25,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:25 WrapperNode [2019-10-15 02:56:25,148 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 02:56:25,149 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 02:56:25,149 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 02:56:25,149 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 02:56:25,246 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:25" (1/1) ... [2019-10-15 02:56:25,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:25" (1/1) ... [2019-10-15 02:56:25,253 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:25" (1/1) ... [2019-10-15 02:56:25,253 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:25" (1/1) ... [2019-10-15 02:56:25,256 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:25" (1/1) ... [2019-10-15 02:56:25,260 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:25" (1/1) ... [2019-10-15 02:56:25,261 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:25" (1/1) ... [2019-10-15 02:56:25,262 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 02:56:25,262 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 02:56:25,263 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 02:56:25,263 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 02:56:25,264 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 02:56:25,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 02:56:25,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 02:56:25,324 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2019-10-15 02:56:25,324 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 02:56:25,324 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 02:56:25,324 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2019-10-15 02:56:25,325 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 02:56:25,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 02:56:25,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 02:56:25,462 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 02:56:25,462 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-15 02:56:25,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:56:25 BoogieIcfgContainer [2019-10-15 02:56:25,464 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 02:56:25,466 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 02:56:25,466 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 02:56:25,469 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 02:56:25,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:56:24" (1/3) ... [2019-10-15 02:56:25,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@260d46ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:56:25, skipping insertion in model container [2019-10-15 02:56:25,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:25" (2/3) ... [2019-10-15 02:56:25,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@260d46ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:56:25, skipping insertion in model container [2019-10-15 02:56:25,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:56:25" (3/3) ... [2019-10-15 02:56:25,474 INFO L109 eAbstractionObserver]: Analyzing ICFG test_cut_trace.i [2019-10-15 02:56:25,484 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 02:56:25,492 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 02:56:25,509 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 02:56:25,533 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 02:56:25,533 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 02:56:25,534 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 02:56:25,534 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 02:56:25,534 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 02:56:25,534 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 02:56:25,534 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 02:56:25,535 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 02:56:25,553 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2019-10-15 02:56:25,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-10-15 02:56:25,558 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:56:25,558 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:56:25,560 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:56:25,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:56:25,565 INFO L82 PathProgramCache]: Analyzing trace with hash -417355086, now seen corresponding path program 1 times [2019-10-15 02:56:25,572 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:56:25,572 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978865545] [2019-10-15 02:56:25,572 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:56:25,573 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:56:25,573 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:56:25,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:56:25,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:56:25,692 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978865545] [2019-10-15 02:56:25,694 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:56:25,694 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 02:56:25,694 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622120309] [2019-10-15 02:56:25,699 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 02:56:25,699 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:56:25,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 02:56:25,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:56:25,722 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 3 states. [2019-10-15 02:56:25,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:56:25,797 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2019-10-15 02:56:25,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 02:56:25,799 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-10-15 02:56:25,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:56:25,828 INFO L225 Difference]: With dead ends: 26 [2019-10-15 02:56:25,831 INFO L226 Difference]: Without dead ends: 11 [2019-10-15 02:56:25,838 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 [2019-10-15 02:56:25,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-10-15 02:56:25,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-10-15 02:56:25,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-10-15 02:56:25,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2019-10-15 02:56:25,885 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 8 [2019-10-15 02:56:25,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:56:25,887 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2019-10-15 02:56:25,887 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 02:56:25,887 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2019-10-15 02:56:25,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-15 02:56:25,889 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:56:25,889 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:56:25,889 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:56:25,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:56:25,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1648524013, now seen corresponding path program 1 times [2019-10-15 02:56:25,892 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:56:25,892 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464393134] [2019-10-15 02:56:25,892 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:56:25,893 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:56:25,893 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:56:25,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:56:25,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:56:25,993 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464393134] [2019-10-15 02:56:25,993 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:56:25,993 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 02:56:25,994 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517846659] [2019-10-15 02:56:25,995 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 02:56:25,996 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:56:25,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 02:56:25,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 02:56:25,996 INFO L87 Difference]: Start difference. First operand 11 states and 10 transitions. Second operand 4 states. [2019-10-15 02:56:26,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:56:26,035 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2019-10-15 02:56:26,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 02:56:26,036 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-10-15 02:56:26,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:56:26,036 INFO L225 Difference]: With dead ends: 11 [2019-10-15 02:56:26,037 INFO L226 Difference]: Without dead ends: 0 [2019-10-15 02:56:26,038 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 02:56:26,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-15 02:56:26,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-15 02:56:26,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-15 02:56:26,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-15 02:56:26,039 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2019-10-15 02:56:26,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:56:26,040 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-15 02:56:26,040 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 02:56:26,040 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-15 02:56:26,040 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-15 02:56:26,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-15 02:56:26,073 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-10-15 02:56:26,073 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-15 02:56:26,073 INFO L443 ceAbstractionStarter]: For program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2019-10-15 02:56:26,073 INFO L443 ceAbstractionStarter]: For program point __blast_assertEXIT(lines 4 7) no Hoare annotation was computed. [2019-10-15 02:56:26,074 INFO L446 ceAbstractionStarter]: At program point __blast_assertENTRY(lines 4 7) the Hoare annotation is: true [2019-10-15 02:56:26,074 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-15 02:56:26,074 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-15 02:56:26,074 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-15 02:56:26,074 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-15 02:56:26,075 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 13 20) the Hoare annotation is: true [2019-10-15 02:56:26,075 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 13 20) no Hoare annotation was computed. [2019-10-15 02:56:26,075 INFO L443 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2019-10-15 02:56:26,075 INFO L443 ceAbstractionStarter]: For program point L16(line 16) no Hoare annotation was computed. [2019-10-15 02:56:26,076 INFO L439 ceAbstractionStarter]: At program point L18-2(line 18) the Hoare annotation is: false [2019-10-15 02:56:26,076 INFO L443 ceAbstractionStarter]: For program point L18-3(line 18) no Hoare annotation was computed. [2019-10-15 02:56:26,076 INFO L439 ceAbstractionStarter]: At program point L16-2(line 16) the Hoare annotation is: false [2019-10-15 02:56:26,076 INFO L443 ceAbstractionStarter]: For program point L16-3(line 16) no Hoare annotation was computed. [2019-10-15 02:56:26,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 02:56:26 BoogieIcfgContainer [2019-10-15 02:56:26,080 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-15 02:56:26,083 INFO L168 Benchmark]: Toolchain (without parser) took 1207.10 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 102.1 MB in the beginning and 139.2 MB in the end (delta: -37.1 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. [2019-10-15 02:56:26,084 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 138.4 MB. Free memory is still 120.1 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-10-15 02:56:26,085 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.23 ms. Allocated memory is still 138.4 MB. Free memory was 101.7 MB in the beginning and 92.7 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB. [2019-10-15 02:56:26,086 INFO L168 Benchmark]: Boogie Preprocessor took 112.98 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 92.7 MB in the beginning and 180.7 MB in the end (delta: -88.0 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2019-10-15 02:56:26,087 INFO L168 Benchmark]: RCFGBuilder took 201.56 ms. Allocated memory is still 201.9 MB. Free memory was 180.7 MB in the beginning and 170.3 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2019-10-15 02:56:26,088 INFO L168 Benchmark]: TraceAbstraction took 614.45 ms. Allocated memory is still 201.9 MB. Free memory was 170.3 MB in the beginning and 139.2 MB in the end (delta: 31.1 MB). Peak memory consumption was 31.1 MB. Max. memory is 7.1 GB. [2019-10-15 02:56:26,093 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 138.4 MB. Free memory is still 120.1 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 272.23 ms. Allocated memory is still 138.4 MB. Free memory was 101.7 MB in the beginning and 92.7 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.98 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 92.7 MB in the beginning and 180.7 MB in the end (delta: -88.0 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 201.56 ms. Allocated memory is still 201.9 MB. Free memory was 180.7 MB in the beginning and 170.3 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 614.45 ms. Allocated memory is still 201.9 MB. Free memory was 170.3 MB in the beginning and 139.2 MB in the end (delta: 31.1 MB). Peak memory consumption was 31.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. Result: SAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 17 SDtfs, 6 SDslu, 16 SDs, 0 SdLazy, 6 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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, 9 PreInvPairs, 9 NumberOfFragments, 7 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 306 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 correct! Received shutdown request...