/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test_cut_trace.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 03:56:46,226 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 03:56:46,229 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 03:56:46,247 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-24 03:56:46,289 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-24 03:56:46,305 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 03:56:46,306 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 03:56:46,306 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 03:56:46,307 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 03:56:46,308 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 03:56:46,308 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 03:56:46,308 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 03:56:46,308 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 03:56:46,308 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 03:56:46,308 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 03:56:46,309 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 03:56:46,309 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 03:56:46,309 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 03:56:46,309 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 03:56:46,309 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 03:56:46,311 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 03:56:46,312 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 03:56:46,312 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 03:56:46,313 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 03:56:46,313 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 03:56:46,313 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 03:56:46,313 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 03:56:46,313 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 03:56:46,314 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 03:56:46,314 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 03:56:46,314 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 03:56:46,314 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 03:56:46,314 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 03:56:46,316 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 03:56:46,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 03:56:46,316 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 03:56:46,317 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 03:56:46,317 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 03:56:46,317 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 03:56:46,317 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 03:56:46,317 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 03:56:46,318 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 03:56:46,318 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 03:56:46,581 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 03:56:46,594 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 03:56:46,597 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 03:56:46,599 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 03:56:46,599 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 03:56:46,600 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test_cut_trace.i [2019-11-24 03:56:46,678 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6897fd499/1848ceac2bc74c1ea74e3ff8c04fe274/FLAGf47f4a455 [2019-11-24 03:56:47,139 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 03:56:47,140 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test_cut_trace.i [2019-11-24 03:56:47,145 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6897fd499/1848ceac2bc74c1ea74e3ff8c04fe274/FLAGf47f4a455 [2019-11-24 03:56:47,567 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6897fd499/1848ceac2bc74c1ea74e3ff8c04fe274 [2019-11-24 03:56:47,575 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 03:56:47,577 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 03:56:47,578 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 03:56:47,578 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 03:56:47,582 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 03:56:47,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 03:56:47" (1/1) ... [2019-11-24 03:56:47,585 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@234482db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:56:47, skipping insertion in model container [2019-11-24 03:56:47,586 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 03:56:47" (1/1) ... [2019-11-24 03:56:47,593 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 03:56:47,612 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 03:56:47,821 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 03:56:47,825 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 03:56:47,837 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 03:56:47,849 INFO L208 MainTranslator]: Completed translation [2019-11-24 03:56:47,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:56:47 WrapperNode [2019-11-24 03:56:47,850 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 03:56:47,850 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 03:56:47,851 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 03:56:47,851 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 03:56:47,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:56:47" (1/1) ... [2019-11-24 03:56:47,861 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:56:47" (1/1) ... [2019-11-24 03:56:47,949 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 03:56:47,950 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 03:56:47,950 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 03:56:47,950 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 03:56:47,958 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:56:47" (1/1) ... [2019-11-24 03:56:47,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:56:47" (1/1) ... [2019-11-24 03:56:47,959 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:56:47" (1/1) ... [2019-11-24 03:56:47,959 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:56:47" (1/1) ... [2019-11-24 03:56:47,961 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:56:47" (1/1) ... [2019-11-24 03:56:47,963 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:56:47" (1/1) ... [2019-11-24 03:56:47,963 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:56:47" (1/1) ... [2019-11-24 03:56:47,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 03:56:47,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 03:56:47,964 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 03:56:47,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 03:56:47,965 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:56:47" (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 [2019-11-24 03:56:48,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 03:56:48,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 03:56:48,151 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 03:56:48,152 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-24 03:56:48,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 03:56:48 BoogieIcfgContainer [2019-11-24 03:56:48,153 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 03:56:48,154 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 03:56:48,154 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 03:56:48,157 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 03:56:48,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 03:56:47" (1/3) ... [2019-11-24 03:56:48,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77be5fcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 03:56:48, skipping insertion in model container [2019-11-24 03:56:48,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:56:47" (2/3) ... [2019-11-24 03:56:48,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77be5fcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 03:56:48, skipping insertion in model container [2019-11-24 03:56:48,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 03:56:48" (3/3) ... [2019-11-24 03:56:48,160 INFO L109 eAbstractionObserver]: Analyzing ICFG test_cut_trace.i [2019-11-24 03:56:48,169 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 03:56:48,175 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-24 03:56:48,186 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-24 03:56:48,209 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 03:56:48,209 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 03:56:48,210 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 03:56:48,210 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 03:56:48,210 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 03:56:48,210 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 03:56:48,210 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 03:56:48,210 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 03:56:48,222 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2019-11-24 03:56:48,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-24 03:56:48,227 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:56:48,227 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-24 03:56:48,228 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 03:56:48,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:56:48,232 INFO L82 PathProgramCache]: Analyzing trace with hash 30946, now seen corresponding path program 1 times [2019-11-24 03:56:48,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:56:48,240 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215682147] [2019-11-24 03:56:48,240 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:56:48,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:56:48,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 03:56:48,371 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215682147] [2019-11-24 03:56:48,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 03:56:48,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 03:56:48,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301248666] [2019-11-24 03:56:48,380 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 03:56:48,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 03:56:48,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 03:56:48,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 03:56:48,436 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2019-11-24 03:56:48,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 03:56:48,472 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2019-11-24 03:56:48,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 03:56:48,481 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-11-24 03:56:48,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 03:56:48,502 INFO L225 Difference]: With dead ends: 16 [2019-11-24 03:56:48,503 INFO L226 Difference]: Without dead ends: 6 [2019-11-24 03:56:48,506 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 03:56:48,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2019-11-24 03:56:48,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2019-11-24 03:56:48,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-11-24 03:56:48,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 5 transitions. [2019-11-24 03:56:48,540 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 5 transitions. Word has length 3 [2019-11-24 03:56:48,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 03:56:48,540 INFO L462 AbstractCegarLoop]: Abstraction has 6 states and 5 transitions. [2019-11-24 03:56:48,540 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 03:56:48,541 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 5 transitions. [2019-11-24 03:56:48,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-24 03:56:48,541 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:56:48,541 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-24 03:56:48,542 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 03:56:48,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:56:48,542 INFO L82 PathProgramCache]: Analyzing trace with hash 29683914, now seen corresponding path program 1 times [2019-11-24 03:56:48,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:56:48,543 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413903526] [2019-11-24 03:56:48,543 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:56:48,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:56:48,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 03:56:48,670 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413903526] [2019-11-24 03:56:48,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 03:56:48,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 03:56:48,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206636561] [2019-11-24 03:56:48,672 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 03:56:48,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 03:56:48,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 03:56:48,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-24 03:56:48,673 INFO L87 Difference]: Start difference. First operand 6 states and 5 transitions. Second operand 4 states. [2019-11-24 03:56:48,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 03:56:48,697 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-11-24 03:56:48,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 03:56:48,697 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-11-24 03:56:48,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 03:56:48,698 INFO L225 Difference]: With dead ends: 6 [2019-11-24 03:56:48,698 INFO L226 Difference]: Without dead ends: 0 [2019-11-24 03:56:48,699 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-24 03:56:48,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-24 03:56:48,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-24 03:56:48,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-24 03:56:48,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-24 03:56:48,701 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2019-11-24 03:56:48,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 03:56:48,701 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-24 03:56:48,701 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 03:56:48,701 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-24 03:56:48,702 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-24 03:56:48,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-24 03:56:48,718 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-24 03:56:48,719 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2019-11-24 03:56:48,719 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-24 03:56:48,719 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2019-11-24 03:56:48,719 INFO L444 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2019-11-24 03:56:48,719 INFO L444 ceAbstractionStarter]: For program point L16(line 16) no Hoare annotation was computed. [2019-11-24 03:56:48,720 INFO L444 ceAbstractionStarter]: For program point L6(line 6) no Hoare annotation was computed. [2019-11-24 03:56:48,720 INFO L444 ceAbstractionStarter]: For program point L6-1(line 6) no Hoare annotation was computed. [2019-11-24 03:56:48,720 INFO L444 ceAbstractionStarter]: For program point L4(lines 1 20) no Hoare annotation was computed. [2019-11-24 03:56:48,720 INFO L440 ceAbstractionStarter]: At program point L4-1(lines 1 20) the Hoare annotation is: (= ULTIMATE.start_main_~z~0 0) [2019-11-24 03:56:48,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 03:56:48 BoogieIcfgContainer [2019-11-24 03:56:48,736 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-24 03:56:48,739 INFO L168 Benchmark]: Toolchain (without parser) took 1161.05 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 102.6 MB in the beginning and 141.0 MB in the end (delta: -38.5 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2019-11-24 03:56:48,740 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-11-24 03:56:48,741 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.01 ms. Allocated memory is still 138.9 MB. Free memory was 102.4 MB in the beginning and 93.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2019-11-24 03:56:48,742 INFO L168 Benchmark]: Boogie Procedure Inliner took 99.05 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 93.2 MB in the beginning and 180.6 MB in the end (delta: -87.5 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. [2019-11-24 03:56:48,744 INFO L168 Benchmark]: Boogie Preprocessor took 14.43 ms. Allocated memory is still 201.3 MB. Free memory was 180.6 MB in the beginning and 180.0 MB in the end (delta: 662.1 kB). Peak memory consumption was 662.1 kB. Max. memory is 7.1 GB. [2019-11-24 03:56:48,745 INFO L168 Benchmark]: RCFGBuilder took 188.94 ms. Allocated memory is still 201.3 MB. Free memory was 179.3 MB in the beginning and 169.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-11-24 03:56:48,746 INFO L168 Benchmark]: TraceAbstraction took 581.84 ms. Allocated memory is still 201.3 MB. Free memory was 169.9 MB in the beginning and 141.0 MB in the end (delta: 28.9 MB). Peak memory consumption was 28.9 MB. Max. memory is 7.1 GB. [2019-11-24 03:56:48,751 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 272.01 ms. Allocated memory is still 138.9 MB. Free memory was 102.4 MB in the beginning and 93.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 99.05 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 93.2 MB in the beginning and 180.6 MB in the end (delta: -87.5 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 14.43 ms. Allocated memory is still 201.3 MB. Free memory was 180.6 MB in the beginning and 180.0 MB in the end (delta: 662.1 kB). Peak memory consumption was 662.1 kB. Max. memory is 7.1 GB. * RCFGBuilder took 188.94 ms. Allocated memory is still 201.3 MB. Free memory was 179.3 MB in the beginning and 169.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 581.84 ms. Allocated memory is still 201.3 MB. Free memory was 169.9 MB in the beginning and 141.0 MB in the end (delta: 28.9 MB). Peak memory consumption was 28.9 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 - 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 2 specifications checked. All of them hold - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: z == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 2 error locations. Result: SAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 6 SDtfs, 7 SDslu, 0 SDs, 0 SdLazy, 6 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred 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, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 3 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 64 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...