/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/loop-invgen/id_trans.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:19:31,678 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:19:31,680 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:19:31,697 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-24 04:19:31,763 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 04:19:31,790 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:19:31,790 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:19:31,791 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:19:31,791 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:19:31,792 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:19:31,792 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:19:31,792 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:19:31,792 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:19:31,792 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:19:31,792 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:19:31,793 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:19:31,793 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:19:31,793 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:19:31,793 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:19:31,794 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:19:31,794 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:19:31,794 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:19:31,795 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:19:31,795 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:19:31,795 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:19:31,795 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:19:31,795 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:19:31,796 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:19:31,796 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:19:31,796 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:19:31,796 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:19:31,796 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:19:31,797 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:19:31,797 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:19:31,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:19:31,797 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:19:31,798 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:19:31,798 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:19:31,798 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:19:31,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:19:31,798 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:19:31,798 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:19:31,799 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:19:32,094 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:19:32,107 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:19:32,110 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:19:32,112 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:19:32,112 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:19:32,113 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/id_trans.i [2019-11-24 04:19:32,178 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d9e417e5/c8f7fc1fc3234738b76e4be085c1621a/FLAG490839285 [2019-11-24 04:19:32,594 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:19:32,595 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_trans.i [2019-11-24 04:19:32,601 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d9e417e5/c8f7fc1fc3234738b76e4be085c1621a/FLAG490839285 [2019-11-24 04:19:32,990 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d9e417e5/c8f7fc1fc3234738b76e4be085c1621a [2019-11-24 04:19:32,998 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:19:32,999 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:19:33,000 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:19:33,000 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:19:33,004 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:19:33,005 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:19:32" (1/1) ... [2019-11-24 04:19:33,007 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b3ccc0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:19:33, skipping insertion in model container [2019-11-24 04:19:33,008 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:19:32" (1/1) ... [2019-11-24 04:19:33,015 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:19:33,031 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:19:33,193 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:19:33,197 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:19:33,220 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:19:33,232 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:19:33,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:19:33 WrapperNode [2019-11-24 04:19:33,232 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:19:33,233 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:19:33,233 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:19:33,234 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:19:33,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:19:33" (1/1) ... [2019-11-24 04:19:33,246 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:19:33" (1/1) ... [2019-11-24 04:19:33,355 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:19:33,357 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:19:33,357 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:19:33,357 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:19:33,366 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:19:33" (1/1) ... [2019-11-24 04:19:33,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:19:33" (1/1) ... [2019-11-24 04:19:33,367 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:19:33" (1/1) ... [2019-11-24 04:19:33,368 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:19:33" (1/1) ... [2019-11-24 04:19:33,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:19:33" (1/1) ... [2019-11-24 04:19:33,375 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:19:33" (1/1) ... [2019-11-24 04:19:33,376 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:19:33" (1/1) ... [2019-11-24 04:19:33,378 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:19:33,378 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:19:33,378 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:19:33,378 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:19:33,379 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:19:33" (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 04:19:33,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:19:33,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 04:19:33,697 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 04:19:33,698 INFO L284 CfgBuilder]: Removed 13 assume(true) statements. [2019-11-24 04:19:33,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:19:33 BoogieIcfgContainer [2019-11-24 04:19:33,699 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 04:19:33,701 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 04:19:33,701 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 04:19:33,715 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 04:19:33,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:19:32" (1/3) ... [2019-11-24 04:19:33,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@315c68dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:19:33, skipping insertion in model container [2019-11-24 04:19:33,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:19:33" (2/3) ... [2019-11-24 04:19:33,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@315c68dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:19:33, skipping insertion in model container [2019-11-24 04:19:33,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:19:33" (3/3) ... [2019-11-24 04:19:33,722 INFO L109 eAbstractionObserver]: Analyzing ICFG id_trans.i [2019-11-24 04:19:33,735 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 04:19:33,742 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-24 04:19:33,758 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-24 04:19:33,780 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 04:19:33,780 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 04:19:33,780 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 04:19:33,780 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 04:19:33,780 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 04:19:33,780 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 04:19:33,781 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 04:19:33,781 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 04:19:33,793 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-11-24 04:19:33,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-24 04:19:33,798 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:19:33,798 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-24 04:19:33,799 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:19:33,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:19:33,803 INFO L82 PathProgramCache]: Analyzing trace with hash 29745418, now seen corresponding path program 1 times [2019-11-24 04:19:33,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:19:33,811 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204159818] [2019-11-24 04:19:33,811 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:19:33,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:19:33,991 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 04:19:33,992 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204159818] [2019-11-24 04:19:33,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:19:33,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 04:19:33,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555201263] [2019-11-24 04:19:34,000 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 04:19:34,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:19:34,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 04:19:34,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-24 04:19:34,022 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 4 states. [2019-11-24 04:19:34,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:19:34,115 INFO L93 Difference]: Finished difference Result 41 states and 49 transitions. [2019-11-24 04:19:34,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 04:19:34,117 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-11-24 04:19:34,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:19:34,127 INFO L225 Difference]: With dead ends: 41 [2019-11-24 04:19:34,128 INFO L226 Difference]: Without dead ends: 16 [2019-11-24 04:19:34,132 INFO L630 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 [2019-11-24 04:19:34,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-24 04:19:34,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2019-11-24 04:19:34,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-24 04:19:34,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2019-11-24 04:19:34,169 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 5 [2019-11-24 04:19:34,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:19:34,170 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2019-11-24 04:19:34,170 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 04:19:34,170 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2019-11-24 04:19:34,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-24 04:19:34,171 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:19:34,171 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:19:34,172 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:19:34,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:19:34,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1479268755, now seen corresponding path program 1 times [2019-11-24 04:19:34,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:19:34,173 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256671017] [2019-11-24 04:19:34,173 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:19:34,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:19:34,244 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 04:19:34,245 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256671017] [2019-11-24 04:19:34,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:19:34,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 04:19:34,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945458354] [2019-11-24 04:19:34,248 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 04:19:34,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:19:34,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 04:19:34,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-24 04:19:34,249 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 4 states. [2019-11-24 04:19:34,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:19:34,306 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2019-11-24 04:19:34,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-24 04:19:34,307 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-11-24 04:19:34,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:19:34,308 INFO L225 Difference]: With dead ends: 16 [2019-11-24 04:19:34,308 INFO L226 Difference]: Without dead ends: 14 [2019-11-24 04:19:34,309 INFO L630 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 [2019-11-24 04:19:34,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-24 04:19:34,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2019-11-24 04:19:34,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-24 04:19:34,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-11-24 04:19:34,314 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 7 [2019-11-24 04:19:34,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:19:34,315 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-11-24 04:19:34,315 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 04:19:34,315 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-11-24 04:19:34,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-24 04:19:34,316 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:19:34,316 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:19:34,316 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:19:34,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:19:34,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1002264813, now seen corresponding path program 1 times [2019-11-24 04:19:34,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:19:34,318 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896655807] [2019-11-24 04:19:34,318 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:19:34,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-24 04:19:34,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-24 04:19:34,422 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-11-24 04:19:34,422 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-24 04:19:34,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 04:19:34 BoogieIcfgContainer [2019-11-24 04:19:34,439 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-24 04:19:34,442 INFO L168 Benchmark]: Toolchain (without parser) took 1441.67 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 105.6 MB in the beginning and 128.9 MB in the end (delta: -23.3 MB). Peak memory consumption was 40.7 MB. Max. memory is 7.1 GB. [2019-11-24 04:19:34,443 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory was 123.7 MB in the beginning and 123.5 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-11-24 04:19:34,444 INFO L168 Benchmark]: CACSL2BoogieTranslator took 232.84 ms. Allocated memory is still 140.5 MB. Free memory was 105.3 MB in the beginning and 95.8 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2019-11-24 04:19:34,445 INFO L168 Benchmark]: Boogie Procedure Inliner took 123.38 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 95.8 MB in the beginning and 183.7 MB in the end (delta: -87.9 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. [2019-11-24 04:19:34,446 INFO L168 Benchmark]: Boogie Preprocessor took 20.88 ms. Allocated memory is still 204.5 MB. Free memory was 183.7 MB in the beginning and 182.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2019-11-24 04:19:34,447 INFO L168 Benchmark]: RCFGBuilder took 321.18 ms. Allocated memory is still 204.5 MB. Free memory was 182.0 MB in the beginning and 167.7 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2019-11-24 04:19:34,448 INFO L168 Benchmark]: TraceAbstraction took 738.60 ms. Allocated memory is still 204.5 MB. Free memory was 167.1 MB in the beginning and 128.9 MB in the end (delta: 38.2 MB). Peak memory consumption was 38.2 MB. Max. memory is 7.1 GB. [2019-11-24 04:19:34,453 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 140.5 MB. Free memory was 123.7 MB in the beginning and 123.5 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 232.84 ms. Allocated memory is still 140.5 MB. Free memory was 105.3 MB in the beginning and 95.8 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 123.38 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 95.8 MB in the beginning and 183.7 MB in the end (delta: -87.9 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 20.88 ms. Allocated memory is still 204.5 MB. Free memory was 183.7 MB in the beginning and 182.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 321.18 ms. Allocated memory is still 204.5 MB. Free memory was 182.0 MB in the beginning and 167.7 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 738.60 ms. Allocated memory is still 204.5 MB. Free memory was 167.1 MB in the beginning and 128.9 MB in the end (delta: 38.2 MB). Peak memory consumption was 38.2 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: [L11] int idBitLength, material_length, nlen; [L12] int j, k; [L13] nlen = __VERIFIER_nondet_int() [L14] idBitLength = __VERIFIER_nondet_int() [L15] material_length = __VERIFIER_nondet_int() [L16] COND FALSE !(!( nlen == idBitLength / 32 )) [L17] j = 0 [L17] COND TRUE (j < idBitLength / 8) && (j < material_length) [L4] COND FALSE !(!(cond)) [L4] COND FALSE !(!(cond)) [L4] COND FALSE !(!(cond)) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 4 error locations. Result: UNSAFE, OverallTime: 0.6s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 21 SDtfs, 21 SDslu, 12 SDs, 0 SdLazy, 29 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 138 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 incorrect! Received shutdown request...