/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-lit/gsv2008.c.i.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:22:02,652 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:22:02,655 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:22:02,674 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 04:22:02,674 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 04:22:02,676 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 04:22:02,678 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 04:22:02,690 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 04:22:02,692 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 04:22:02,694 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 04:22:02,696 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 04:22:02,697 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 04:22:02,697 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 04:22:02,698 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 04:22:02,701 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 04:22:02,702 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 04:22:02,704 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 04:22:02,706 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 04:22:02,707 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 04:22:02,712 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 04:22:02,717 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 04:22:02,719 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 04:22:02,720 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 04:22:02,721 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 04:22:02,724 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-24 04:22:02,724 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-24 04:22:02,724 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-24 04:22:02,726 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-24 04:22:02,727 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-24 04:22:02,728 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-24 04:22:02,728 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 04:22:02,729 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 04:22:02,730 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 04:22:02,730 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 04:22:02,732 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 04:22:02,732 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 04:22:02,733 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 04:22:02,733 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 04:22:02,733 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 04:22:02,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 04:22:02,737 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 04:22:02,738 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 04:22:02,759 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:22:02,760 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:22:02,761 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:22:02,761 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:22:02,762 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:22:02,762 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:22:02,762 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:22:02,762 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:22:02,762 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:22:02,762 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:22:02,763 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:22:02,764 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:22:02,764 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:22:02,764 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:22:02,765 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:22:02,766 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:22:02,766 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:22:02,766 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:22:02,766 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:22:02,766 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:22:02,767 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:22:02,768 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:22:02,768 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:22:02,769 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:22:02,769 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:22:02,770 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:22:02,770 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:22:02,770 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:22:02,771 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:22:02,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:22:02,772 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:22:02,772 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:22:02,772 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:22:02,772 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:22:02,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:22:02,773 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:22:02,773 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:22:02,774 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:22:03,024 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:22:03,041 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:22:03,045 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:22:03,046 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:22:03,047 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:22:03,047 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+cfa-reducer.c [2019-11-24 04:22:03,114 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c9759f77/ecc66c69f9174d6abeb234a7f88b7088/FLAGe2cc704f7 [2019-11-24 04:22:03,610 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:22:03,611 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+cfa-reducer.c [2019-11-24 04:22:03,617 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c9759f77/ecc66c69f9174d6abeb234a7f88b7088/FLAGe2cc704f7 [2019-11-24 04:22:03,976 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c9759f77/ecc66c69f9174d6abeb234a7f88b7088 [2019-11-24 04:22:03,985 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:22:03,986 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:22:03,987 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:22:03,987 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:22:03,990 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:22:03,991 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:22:03" (1/1) ... [2019-11-24 04:22:03,994 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@363fc5f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:22:03, skipping insertion in model container [2019-11-24 04:22:03,995 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:22:03" (1/1) ... [2019-11-24 04:22:04,001 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:22:04,018 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:22:04,177 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:22:04,182 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:22:04,199 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:22:04,213 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:22:04,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:22:04 WrapperNode [2019-11-24 04:22:04,214 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:22:04,214 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:22:04,215 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:22:04,215 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:22:04,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:22:04" (1/1) ... [2019-11-24 04:22:04,228 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:22:04" (1/1) ... [2019-11-24 04:22:04,321 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:22:04,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:22:04,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:22:04,322 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:22:04,331 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:22:04" (1/1) ... [2019-11-24 04:22:04,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:22:04" (1/1) ... [2019-11-24 04:22:04,333 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:22:04" (1/1) ... [2019-11-24 04:22:04,333 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:22:04" (1/1) ... [2019-11-24 04:22:04,336 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:22:04" (1/1) ... [2019-11-24 04:22:04,338 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:22:04" (1/1) ... [2019-11-24 04:22:04,339 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:22:04" (1/1) ... [2019-11-24 04:22:04,345 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:22:04,346 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:22:04,346 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:22:04,346 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:22:04,347 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:22:04" (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 04:22:04,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:22:04,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 04:22:04,574 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 04:22:04,575 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-24 04:22:04,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:22:04 BoogieIcfgContainer [2019-11-24 04:22:04,576 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 04:22:04,577 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 04:22:04,577 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 04:22:04,579 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 04:22:04,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:22:03" (1/3) ... [2019-11-24 04:22:04,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e685b56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:22:04, skipping insertion in model container [2019-11-24 04:22:04,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:22:04" (2/3) ... [2019-11-24 04:22:04,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e685b56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:22:04, skipping insertion in model container [2019-11-24 04:22:04,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:22:04" (3/3) ... [2019-11-24 04:22:04,583 INFO L109 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.v+cfa-reducer.c [2019-11-24 04:22:04,592 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 04:22:04,599 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-24 04:22:04,610 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-24 04:22:04,633 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 04:22:04,633 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 04:22:04,633 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 04:22:04,633 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 04:22:04,633 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 04:22:04,633 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 04:22:04,634 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 04:22:04,634 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 04:22:04,645 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-11-24 04:22:04,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-24 04:22:04,650 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:22:04,651 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-24 04:22:04,651 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:22:04,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:22:04,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1724589170, now seen corresponding path program 1 times [2019-11-24 04:22:04,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:22:04,664 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310699209] [2019-11-24 04:22:04,664 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:22:04,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:22:04,801 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 04:22:04,802 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310699209] [2019-11-24 04:22:04,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:22:04,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 04:22:04,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757437520] [2019-11-24 04:22:04,809 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:22:04,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:22:04,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:22:04,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:22:04,821 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2019-11-24 04:22:04,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:22:04,851 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2019-11-24 04:22:04,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:22:04,855 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-11-24 04:22:04,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:22:04,875 INFO L225 Difference]: With dead ends: 17 [2019-11-24 04:22:04,876 INFO L226 Difference]: Without dead ends: 8 [2019-11-24 04:22:04,879 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 04:22:04,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-24 04:22:04,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-24 04:22:04,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-24 04:22:04,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-11-24 04:22:04,930 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2019-11-24 04:22:04,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:22:04,931 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-11-24 04:22:04,931 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:22:04,932 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-11-24 04:22:04,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-24 04:22:04,947 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:22:04,947 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:22:04,947 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:22:04,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:22:04,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1922594244, now seen corresponding path program 1 times [2019-11-24 04:22:04,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:22:04,949 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560695088] [2019-11-24 04:22:04,949 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:22:04,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:22:05,027 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 04:22:05,028 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560695088] [2019-11-24 04:22:05,028 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492444341] [2019-11-24 04:22:05,028 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 04:22:05,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:22:05,083 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-24 04:22:05,087 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:22:05,130 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:22:05,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:22:05,152 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:22:05,185 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:22:05,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-24 04:22:05,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [4] total 8 [2019-11-24 04:22:05,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183291528] [2019-11-24 04:22:05,188 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-24 04:22:05,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:22:05,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-24 04:22:05,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-11-24 04:22:05,189 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 6 states. [2019-11-24 04:22:05,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:22:05,256 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2019-11-24 04:22:05,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-24 04:22:05,256 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2019-11-24 04:22:05,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:22:05,257 INFO L225 Difference]: With dead ends: 8 [2019-11-24 04:22:05,257 INFO L226 Difference]: Without dead ends: 0 [2019-11-24 04:22:05,259 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-11-24 04:22:05,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-24 04:22:05,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-24 04:22:05,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-24 04:22:05,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-24 04:22:05,262 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2019-11-24 04:22:05,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:22:05,262 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-24 04:22:05,263 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-24 04:22:05,263 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-24 04:22:05,264 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-24 04:22:05,464 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 04:22:05,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-24 04:22:05,509 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-24 04:22:05,512 INFO L440 ceAbstractionStarter]: At program point L32(lines 25 53) the Hoare annotation is: (or (<= (+ ULTIMATE.start_main_~main__x~0 2) ULTIMATE.start_main_~main__y~0) (<= (+ ULTIMATE.start_main_~main__x~0 50) 0)) [2019-11-24 04:22:05,512 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-24 04:22:05,512 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 43) no Hoare annotation was computed. [2019-11-24 04:22:05,513 INFO L444 ceAbstractionStarter]: For program point L20(lines 20 53) no Hoare annotation was computed. [2019-11-24 04:22:05,513 INFO L447 ceAbstractionStarter]: At program point L49(lines 8 55) the Hoare annotation is: true [2019-11-24 04:22:05,513 INFO L444 ceAbstractionStarter]: For program point L14(lines 14 54) no Hoare annotation was computed. [2019-11-24 04:22:05,513 INFO L444 ceAbstractionStarter]: For program point L43(line 43) no Hoare annotation was computed. [2019-11-24 04:22:05,513 INFO L444 ceAbstractionStarter]: For program point L41(lines 41 50) no Hoare annotation was computed. [2019-11-24 04:22:05,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 04:22:05 BoogieIcfgContainer [2019-11-24 04:22:05,527 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-24 04:22:05,530 INFO L168 Benchmark]: Toolchain (without parser) took 1542.99 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 104.5 MB in the beginning and 127.9 MB in the end (delta: -23.3 MB). Peak memory consumption was 40.7 MB. Max. memory is 7.1 GB. [2019-11-24 04:22:05,531 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-24 04:22:05,532 INFO L168 Benchmark]: CACSL2BoogieTranslator took 227.01 ms. Allocated memory is still 139.5 MB. Free memory was 104.3 MB in the beginning and 94.7 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2019-11-24 04:22:05,534 INFO L168 Benchmark]: Boogie Procedure Inliner took 106.47 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 94.7 MB in the beginning and 182.7 MB in the end (delta: -88.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. [2019-11-24 04:22:05,535 INFO L168 Benchmark]: Boogie Preprocessor took 24.35 ms. Allocated memory is still 203.4 MB. Free memory was 182.7 MB in the beginning and 181.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2019-11-24 04:22:05,536 INFO L168 Benchmark]: RCFGBuilder took 229.96 ms. Allocated memory is still 203.4 MB. Free memory was 181.0 MB in the beginning and 170.0 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2019-11-24 04:22:05,536 INFO L168 Benchmark]: TraceAbstraction took 950.71 ms. Allocated memory is still 203.4 MB. Free memory was 169.3 MB in the beginning and 127.9 MB in the end (delta: 41.5 MB). Peak memory consumption was 41.5 MB. Max. memory is 7.1 GB. [2019-11-24 04:22:05,541 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 227.01 ms. Allocated memory is still 139.5 MB. Free memory was 104.3 MB in the beginning and 94.7 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 106.47 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 94.7 MB in the beginning and 182.7 MB in the end (delta: -88.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 24.35 ms. Allocated memory is still 203.4 MB. Free memory was 182.7 MB in the beginning and 181.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 229.96 ms. Allocated memory is still 203.4 MB. Free memory was 181.0 MB in the beginning and 170.0 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 950.71 ms. Allocated memory is still 203.4 MB. Free memory was 169.3 MB in the beginning and 127.9 MB in the end (delta: 41.5 MB). Peak memory consumption was 41.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 43]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: main__x + 2 <= main__y || main__x + 50 <= 0 - InvariantResult [Line: 8]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Result: SAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 6 SDslu, 4 SDs, 0 SdLazy, 16 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred 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, 2 LocationsWithAnnotation, 2 PreInvPairs, 5 NumberOfFragments, 12 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 397 SizeOfPredicates, 6 NumberOfNonLiveVariables, 27 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 2/3 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...