/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/forester-heap/dll-reverse.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 00:33:46,859 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 00:33:46,862 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 00:33:46,874 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 00:33:46,874 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 00:33:46,875 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 00:33:46,877 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 00:33:46,879 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 00:33:46,881 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 00:33:46,882 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 00:33:46,883 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 00:33:46,884 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 00:33:46,884 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 00:33:46,885 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 00:33:46,886 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 00:33:46,887 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 00:33:46,888 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 00:33:46,889 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 00:33:46,891 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 00:33:46,894 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 00:33:46,895 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 00:33:46,897 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 00:33:46,898 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 00:33:46,899 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 00:33:46,901 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 00:33:46,910 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 00:33:46,911 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 00:33:46,912 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 00:33:46,913 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 00:33:46,929 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 00:33:46,929 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 00:33:46,930 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 00:33:46,930 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 00:33:46,931 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 00:33:46,931 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 00:33:46,931 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 00:33:46,931 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 00:33:46,931 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 00:33:46,932 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 00:33:46,932 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 00:33:46,932 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 00:33:46,932 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 00:33:46,932 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 00:33:46,933 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 00:33:46,933 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 00:33:46,934 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 00:33:46,934 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 00:33:46,934 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 00:33:46,934 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 00:33:46,934 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 00:33:46,934 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 00:33:46,935 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 00:33:46,935 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 00:33:46,935 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 00:33:46,935 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 00:33:46,935 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 00:33:46,936 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 00:33:46,936 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 00:33:46,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 00:33:46,936 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 00:33:46,936 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 00:33:46,937 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 00:33:46,937 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 00:33:46,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 00:33:46,937 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 00:33:46,937 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 00:33:46,938 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 00:33:47,205 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 00:33:47,226 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 00:33:47,229 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 00:33:47,231 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 00:33:47,231 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 00:33:47,232 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-reverse.i [2019-11-24 00:33:47,294 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0eccbc09/5c129a857f664ed9be79b797d1b4335e/FLAG4bf42c6d3 [2019-11-24 00:33:47,765 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 00:33:47,765 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-reverse.i [2019-11-24 00:33:47,777 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0eccbc09/5c129a857f664ed9be79b797d1b4335e/FLAG4bf42c6d3 [2019-11-24 00:33:48,109 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0eccbc09/5c129a857f664ed9be79b797d1b4335e [2019-11-24 00:33:48,118 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 00:33:48,119 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 00:33:48,121 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 00:33:48,121 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 00:33:48,125 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 00:33:48,126 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:33:48" (1/1) ... [2019-11-24 00:33:48,129 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56a409dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:33:48, skipping insertion in model container [2019-11-24 00:33:48,129 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:33:48" (1/1) ... [2019-11-24 00:33:48,140 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 00:33:48,193 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 00:33:48,651 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 00:33:48,661 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 00:33:48,709 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 00:33:48,767 INFO L208 MainTranslator]: Completed translation [2019-11-24 00:33:48,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:33:48 WrapperNode [2019-11-24 00:33:48,768 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 00:33:48,769 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 00:33:48,769 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 00:33:48,769 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 00:33:48,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:33:48" (1/1) ... [2019-11-24 00:33:48,795 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:33:48" (1/1) ... [2019-11-24 00:33:48,825 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 00:33:48,826 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 00:33:48,826 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 00:33:48,826 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 00:33:48,839 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:33:48" (1/1) ... [2019-11-24 00:33:48,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:33:48" (1/1) ... [2019-11-24 00:33:48,844 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:33:48" (1/1) ... [2019-11-24 00:33:48,844 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:33:48" (1/1) ... [2019-11-24 00:33:48,854 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:33:48" (1/1) ... [2019-11-24 00:33:48,860 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:33:48" (1/1) ... [2019-11-24 00:33:48,863 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:33:48" (1/1) ... [2019-11-24 00:33:48,866 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 00:33:48,867 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 00:33:48,867 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 00:33:48,867 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 00:33:48,868 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:33:48" (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 00:33:48,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-24 00:33:48,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-24 00:33:48,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-24 00:33:48,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-24 00:33:48,932 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-24 00:33:48,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-24 00:33:48,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 00:33:48,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 00:33:50,145 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 00:33:50,146 INFO L284 CfgBuilder]: Removed 15 assume(true) statements. [2019-11-24 00:33:50,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:33:50 BoogieIcfgContainer [2019-11-24 00:33:50,147 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 00:33:50,149 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 00:33:50,150 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 00:33:50,153 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 00:33:50,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:33:48" (1/3) ... [2019-11-24 00:33:50,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52872c5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:33:50, skipping insertion in model container [2019-11-24 00:33:50,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:33:48" (2/3) ... [2019-11-24 00:33:50,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52872c5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:33:50, skipping insertion in model container [2019-11-24 00:33:50,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:33:50" (3/3) ... [2019-11-24 00:33:50,159 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-reverse.i [2019-11-24 00:33:50,172 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 00:33:50,182 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-24 00:33:50,197 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-24 00:33:50,229 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 00:33:50,229 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 00:33:50,229 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 00:33:50,230 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 00:33:50,230 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 00:33:50,230 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 00:33:50,230 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 00:33:50,231 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 00:33:50,249 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2019-11-24 00:33:50,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-24 00:33:50,257 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 00:33:50,258 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-24 00:33:50,258 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 00:33:50,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 00:33:50,266 INFO L82 PathProgramCache]: Analyzing trace with hash 986255260, now seen corresponding path program 1 times [2019-11-24 00:33:50,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 00:33:50,277 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877348808] [2019-11-24 00:33:50,278 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 00:33:50,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 00:33:50,448 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 00:33:50,449 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877348808] [2019-11-24 00:33:50,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 00:33:50,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 00:33:50,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115880512] [2019-11-24 00:33:50,456 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 00:33:50,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 00:33:50,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 00:33:50,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 00:33:50,474 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2019-11-24 00:33:50,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 00:33:50,492 INFO L93 Difference]: Finished difference Result 47 states and 75 transitions. [2019-11-24 00:33:50,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 00:33:50,494 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-11-24 00:33:50,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 00:33:50,504 INFO L225 Difference]: With dead ends: 47 [2019-11-24 00:33:50,505 INFO L226 Difference]: Without dead ends: 23 [2019-11-24 00:33:50,508 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 00:33:50,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-24 00:33:50,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-11-24 00:33:50,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-24 00:33:50,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2019-11-24 00:33:50,547 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 6 [2019-11-24 00:33:50,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 00:33:50,547 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2019-11-24 00:33:50,547 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 00:33:50,547 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2019-11-24 00:33:50,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 00:33:50,548 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 00:33:50,548 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 00:33:50,549 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 00:33:50,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 00:33:50,549 INFO L82 PathProgramCache]: Analyzing trace with hash 777889913, now seen corresponding path program 1 times [2019-11-24 00:33:50,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 00:33:50,550 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696565612] [2019-11-24 00:33:50,550 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 00:33:50,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 00:33:50,679 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 00:33:50,680 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696565612] [2019-11-24 00:33:50,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 00:33:50,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 00:33:50,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534995167] [2019-11-24 00:33:50,682 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 00:33:50,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 00:33:50,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 00:33:50,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-24 00:33:50,684 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 5 states. [2019-11-24 00:33:51,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 00:33:51,215 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2019-11-24 00:33:51,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-24 00:33:51,216 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-11-24 00:33:51,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 00:33:51,217 INFO L225 Difference]: With dead ends: 52 [2019-11-24 00:33:51,217 INFO L226 Difference]: Without dead ends: 33 [2019-11-24 00:33:51,218 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-24 00:33:51,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-24 00:33:51,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2019-11-24 00:33:51,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-24 00:33:51,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2019-11-24 00:33:51,225 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 8 [2019-11-24 00:33:51,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 00:33:51,225 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2019-11-24 00:33:51,226 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 00:33:51,226 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2019-11-24 00:33:51,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 00:33:51,226 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 00:33:51,227 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 00:33:51,227 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 00:33:51,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 00:33:51,227 INFO L82 PathProgramCache]: Analyzing trace with hash 777888663, now seen corresponding path program 1 times [2019-11-24 00:33:51,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 00:33:51,231 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048557908] [2019-11-24 00:33:51,231 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 00:33:51,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 00:33:51,316 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 00:33:51,316 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048557908] [2019-11-24 00:33:51,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 00:33:51,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 00:33:51,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473035811] [2019-11-24 00:33:51,317 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 00:33:51,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 00:33:51,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 00:33:51,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-24 00:33:51,320 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 4 states. [2019-11-24 00:33:51,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 00:33:51,435 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2019-11-24 00:33:51,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 00:33:51,437 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-24 00:33:51,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 00:33:51,438 INFO L225 Difference]: With dead ends: 47 [2019-11-24 00:33:51,438 INFO L226 Difference]: Without dead ends: 37 [2019-11-24 00:33:51,439 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 00:33:51,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-11-24 00:33:51,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2019-11-24 00:33:51,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-24 00:33:51,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2019-11-24 00:33:51,451 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 8 [2019-11-24 00:33:51,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 00:33:51,451 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2019-11-24 00:33:51,451 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 00:33:51,451 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2019-11-24 00:33:51,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-24 00:33:51,452 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 00:33:51,452 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 00:33:51,453 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 00:33:51,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 00:33:51,454 INFO L82 PathProgramCache]: Analyzing trace with hash 673471663, now seen corresponding path program 1 times [2019-11-24 00:33:51,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 00:33:51,454 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53552979] [2019-11-24 00:33:51,455 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 00:33:51,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 00:33:51,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 00:33:51,671 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53552979] [2019-11-24 00:33:51,671 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658756235] [2019-11-24 00:33:51,671 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 00:33:51,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 00:33:51,771 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 44 conjunts are in the unsatisfiable core [2019-11-24 00:33:51,780 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 00:33:51,857 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2019-11-24 00:33:51,858 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-24 00:33:51,875 INFO L567 ElimStorePlain]: treesize reduction 4, result has 77.8 percent of original size [2019-11-24 00:33:51,876 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-24 00:33:51,876 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:14 [2019-11-24 00:33:51,931 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:33:51,933 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:33:51,946 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:33:51,975 INFO L392 ElimStorePlain]: Different costs {1=[|v_#valid_26|], 3=[v_prenex_2]} [2019-11-24 00:33:52,205 INFO L237 Elim1Store]: Index analysis took 112 ms [2019-11-24 00:33:52,217 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 00:33:52,217 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 156 treesize of output 160 [2019-11-24 00:33:52,219 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-24 00:33:52,387 INFO L237 Elim1Store]: Index analysis took 103 ms [2019-11-24 00:33:52,395 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 00:33:52,396 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 156 treesize of output 160 [2019-11-24 00:33:52,396 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-24 00:33:53,749 WARN L192 SmtUtils]: Spent 1.35 s on a formula simplification that was a NOOP. DAG size: 134 [2019-11-24 00:33:53,750 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 00:33:53,914 INFO L237 Elim1Store]: Index analysis took 101 ms [2019-11-24 00:33:53,935 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 00:33:53,936 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 813 treesize of output 823 [2019-11-24 00:33:53,938 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-24 00:33:55,421 WARN L192 SmtUtils]: Spent 1.48 s on a formula simplification that was a NOOP. DAG size: 129 [2019-11-24 00:33:55,422 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 00:33:55,432 INFO L392 ElimStorePlain]: Different costs {0=[|v_#memory_int_80|, |#memory_$Pointer$.offset|, v_prenex_1, v_prenex_3, v_prenex_5, |v_#memory_$Pointer$.offset_53|, |v_#memory_int_76|], 2=[|v_#memory_int_77|, |v_#memory_int_78|, |v_#memory_$Pointer$.base_52|], 4=[|v_#memory_$Pointer$.offset_52|], 13=[v_prenex_4], 17=[v_prenex_6]} [2019-11-24 00:33:55,530 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-24 00:33:55,686 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 150 treesize of output 133 [2019-11-24 00:33:55,687 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-24 00:33:55,935 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 00:33:55,936 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 150 treesize of output 177 [2019-11-24 00:33:55,937 INFO L496 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2019-11-24 00:33:58,747 WARN L192 SmtUtils]: Spent 2.81 s on a formula simplification. DAG size of input: 135 DAG size of output: 131 [2019-11-24 00:33:58,748 INFO L567 ElimStorePlain]: treesize reduction 26, result has 97.7 percent of original size [2019-11-24 00:33:58,772 INFO L496 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2019-11-24 00:33:58,794 INFO L496 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2019-11-24 00:33:59,827 WARN L192 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 124 [2019-11-24 00:33:59,828 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 00:33:59,900 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 806 treesize of output 795 [2019-11-24 00:33:59,901 INFO L496 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2019-11-24 00:34:00,661 WARN L192 SmtUtils]: Spent 759.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-11-24 00:34:00,661 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 00:34:00,670 INFO L496 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2019-11-24 00:34:01,183 WARN L192 SmtUtils]: Spent 512.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2019-11-24 00:34:01,184 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 00:34:01,211 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 557 treesize of output 542 [2019-11-24 00:34:01,212 INFO L496 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2019-11-24 00:34:01,681 WARN L192 SmtUtils]: Spent 468.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2019-11-24 00:34:01,681 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 00:34:01,698 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 97 [2019-11-24 00:34:01,699 INFO L496 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2019-11-24 00:34:01,718 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 79 [2019-11-24 00:34:01,718 INFO L496 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2019-11-24 00:34:02,049 WARN L192 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2019-11-24 00:34:02,049 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 00:34:02,071 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 542 treesize of output 530 [2019-11-24 00:34:02,072 INFO L496 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2019-11-24 00:34:02,361 WARN L192 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-11-24 00:34:02,362 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 00:34:02,374 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-24 00:34:02,388 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 527 treesize of output 375 [2019-11-24 00:34:02,389 INFO L496 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2019-11-24 00:34:02,582 WARN L192 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2019-11-24 00:34:02,582 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 00:34:02,598 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-24 00:34:02,613 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 372 treesize of output 343 [2019-11-24 00:34:02,614 INFO L496 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2019-11-24 00:34:02,922 WARN L192 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2019-11-24 00:34:02,923 INFO L567 ElimStorePlain]: treesize reduction 4, result has 99.2 percent of original size [2019-11-24 00:34:02,962 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 00:34:02,963 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 125 [2019-11-24 00:34:02,964 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:34:02,967 INFO L496 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2019-11-24 00:34:03,003 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 00:34:03,004 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 115 [2019-11-24 00:34:03,005 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 00:34:03,006 INFO L496 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2019-11-24 00:34:03,287 WARN L192 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 78 [2019-11-24 00:34:03,288 INFO L567 ElimStorePlain]: treesize reduction 175, result has 72.7 percent of original size [2019-11-24 00:34:03,489 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 00:34:03,491 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: no XNF at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:244) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:246) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:201) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:291) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:177) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:297) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:190) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:333) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-24 00:34:03,496 INFO L168 Benchmark]: Toolchain (without parser) took 15376.81 ms. Allocated memory was 141.6 MB in the beginning and 246.9 MB in the end (delta: 105.4 MB). Free memory was 100.9 MB in the beginning and 143.6 MB in the end (delta: -42.7 MB). Peak memory consumption was 115.9 MB. Max. memory is 7.1 GB. [2019-11-24 00:34:03,497 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 141.6 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-11-24 00:34:03,498 INFO L168 Benchmark]: CACSL2BoogieTranslator took 647.32 ms. Allocated memory was 141.6 MB in the beginning and 203.9 MB in the end (delta: 62.4 MB). Free memory was 100.5 MB in the beginning and 170.8 MB in the end (delta: -70.3 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. [2019-11-24 00:34:03,498 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.85 ms. Allocated memory is still 203.9 MB. Free memory was 170.1 MB in the beginning and 168.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2019-11-24 00:34:03,499 INFO L168 Benchmark]: Boogie Preprocessor took 40.79 ms. Allocated memory is still 203.9 MB. Free memory was 168.1 MB in the beginning and 166.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2019-11-24 00:34:03,500 INFO L168 Benchmark]: RCFGBuilder took 1280.38 ms. Allocated memory is still 203.9 MB. Free memory was 166.1 MB in the beginning and 119.2 MB in the end (delta: 46.9 MB). Peak memory consumption was 46.9 MB. Max. memory is 7.1 GB. [2019-11-24 00:34:03,501 INFO L168 Benchmark]: TraceAbstraction took 13345.08 ms. Allocated memory was 203.9 MB in the beginning and 246.9 MB in the end (delta: 43.0 MB). Free memory was 119.2 MB in the beginning and 143.6 MB in the end (delta: -24.3 MB). Peak memory consumption was 71.9 MB. Max. memory is 7.1 GB. [2019-11-24 00:34:03,505 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 141.6 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 647.32 ms. Allocated memory was 141.6 MB in the beginning and 203.9 MB in the end (delta: 62.4 MB). Free memory was 100.5 MB in the beginning and 170.8 MB in the end (delta: -70.3 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 56.85 ms. Allocated memory is still 203.9 MB. Free memory was 170.1 MB in the beginning and 168.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 40.79 ms. Allocated memory is still 203.9 MB. Free memory was 168.1 MB in the beginning and 166.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1280.38 ms. Allocated memory is still 203.9 MB. Free memory was 166.1 MB in the beginning and 119.2 MB in the end (delta: 46.9 MB). Peak memory consumption was 46.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13345.08 ms. Allocated memory was 203.9 MB in the beginning and 246.9 MB in the end (delta: 43.0 MB). Free memory was 119.2 MB in the beginning and 143.6 MB in the end (delta: -24.3 MB). Peak memory consumption was 71.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: no XNF de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: no XNF: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:244) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...