java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label10_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 01:54:54,102 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 01:54:54,104 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 01:54:54,121 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 01:54:54,122 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 01:54:54,123 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 01:54:54,124 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 01:54:54,127 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 01:54:54,129 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 01:54:54,137 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 01:54:54,138 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 01:54:54,139 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 01:54:54,140 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 01:54:54,141 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 01:54:54,143 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 01:54:54,146 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 01:54:54,146 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 01:54:54,149 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 01:54:54,154 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 01:54:54,158 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 01:54:54,160 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 01:54:54,162 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 01:54:54,168 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-25 01:54:54,177 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-25 01:54:54,177 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-25 01:54:54,179 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-25 01:54:54,180 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-25 01:54:54,180 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-25 01:54:54,204 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 01:54:54,205 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 01:54:54,206 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 01:54:54,206 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 01:54:54,206 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 01:54:54,206 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 01:54:54,206 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 01:54:54,207 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 01:54:54,207 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 01:54:54,207 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 01:54:54,207 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 01:54:54,207 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 01:54:54,207 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 01:54:54,208 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 01:54:54,208 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 01:54:54,209 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 01:54:54,209 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 01:54:54,209 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 01:54:54,209 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 01:54:54,209 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 01:54:54,210 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 01:54:54,210 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 01:54:54,210 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 01:54:54,210 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 01:54:54,210 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 01:54:54,211 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 01:54:54,211 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 01:54:54,211 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 01:54:54,211 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 01:54:54,211 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 01:54:54,212 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 01:54:54,212 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 01:54:54,212 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 01:54:54,212 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 01:54:54,212 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 01:54:54,213 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 01:54:54,285 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 01:54:54,301 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 01:54:54,305 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 01:54:54,307 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 01:54:54,307 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 01:54:54,308 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label10_true-unreach-call.c [2018-10-25 01:54:54,372 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5b3e37ab7/ffef24eb18364921aeb8f31a3ba7226e/FLAG491698224 [2018-10-25 01:54:55,041 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 01:54:55,042 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label10_true-unreach-call.c [2018-10-25 01:54:55,066 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5b3e37ab7/ffef24eb18364921aeb8f31a3ba7226e/FLAG491698224 [2018-10-25 01:54:55,088 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5b3e37ab7/ffef24eb18364921aeb8f31a3ba7226e [2018-10-25 01:54:55,101 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 01:54:55,104 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 01:54:55,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 01:54:55,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 01:54:55,111 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 01:54:55,113 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:54:55" (1/1) ... [2018-10-25 01:54:55,117 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a445e72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:55, skipping insertion in model container [2018-10-25 01:54:55,117 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:54:55" (1/1) ... [2018-10-25 01:54:55,129 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 01:54:55,257 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 01:54:56,399 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:54:56,405 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 01:54:56,903 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:54:56,927 INFO L193 MainTranslator]: Completed translation [2018-10-25 01:54:56,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:56 WrapperNode [2018-10-25 01:54:56,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 01:54:56,929 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 01:54:56,929 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 01:54:56,929 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 01:54:56,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:56" (1/1) ... [2018-10-25 01:54:56,994 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:56" (1/1) ... [2018-10-25 01:54:57,465 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 01:54:57,466 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 01:54:57,466 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 01:54:57,466 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 01:54:57,477 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:56" (1/1) ... [2018-10-25 01:54:57,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:56" (1/1) ... [2018-10-25 01:54:57,504 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:56" (1/1) ... [2018-10-25 01:54:57,505 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:56" (1/1) ... [2018-10-25 01:54:57,634 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:56" (1/1) ... [2018-10-25 01:54:57,674 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:56" (1/1) ... [2018-10-25 01:54:57,728 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:56" (1/1) ... [2018-10-25 01:54:57,772 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 01:54:57,773 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 01:54:57,773 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 01:54:57,773 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 01:54:57,774 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-25 01:54:57,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 01:54:57,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 01:54:57,848 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-25 01:54:57,848 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-25 01:54:57,848 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 01:54:57,848 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 01:54:57,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 01:54:57,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 01:54:57,849 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 01:54:57,849 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 01:55:10,615 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 01:55:10,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:55:10 BoogieIcfgContainer [2018-10-25 01:55:10,617 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 01:55:10,620 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 01:55:10,620 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 01:55:10,624 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 01:55:10,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 01:54:55" (1/3) ... [2018-10-25 01:55:10,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69fea2d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:55:10, skipping insertion in model container [2018-10-25 01:55:10,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:56" (2/3) ... [2018-10-25 01:55:10,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69fea2d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:55:10, skipping insertion in model container [2018-10-25 01:55:10,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:55:10" (3/3) ... [2018-10-25 01:55:10,628 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label10_true-unreach-call.c [2018-10-25 01:55:10,638 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 01:55:10,647 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 01:55:10,664 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 01:55:10,707 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 01:55:10,707 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 01:55:10,707 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 01:55:10,707 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 01:55:10,708 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 01:55:10,708 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 01:55:10,708 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 01:55:10,708 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 01:55:10,743 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-25 01:55:10,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-25 01:55:10,752 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:55:10,753 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:55:10,755 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:55:10,761 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:55:10,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1853097852, now seen corresponding path program 1 times [2018-10-25 01:55:10,764 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:55:10,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:55:10,822 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:55:10,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:55:10,823 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:55:10,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:55:11,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:55:11,285 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:55:11,286 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 01:55:11,286 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:55:11,292 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 01:55:11,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 01:55:11,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:55:11,313 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-25 01:55:22,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:55:22,171 INFO L93 Difference]: Finished difference Result 2139 states and 3961 transitions. [2018-10-25 01:55:22,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 01:55:22,173 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2018-10-25 01:55:22,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:55:22,205 INFO L225 Difference]: With dead ends: 2139 [2018-10-25 01:55:22,205 INFO L226 Difference]: Without dead ends: 1529 [2018-10-25 01:55:22,218 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:55:22,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1529 states. [2018-10-25 01:55:22,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1529 to 1527. [2018-10-25 01:55:22,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1527 states. [2018-10-25 01:55:22,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1527 states to 1527 states and 2413 transitions. [2018-10-25 01:55:22,370 INFO L78 Accepts]: Start accepts. Automaton has 1527 states and 2413 transitions. Word has length 46 [2018-10-25 01:55:22,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:55:22,371 INFO L481 AbstractCegarLoop]: Abstraction has 1527 states and 2413 transitions. [2018-10-25 01:55:22,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 01:55:22,371 INFO L276 IsEmpty]: Start isEmpty. Operand 1527 states and 2413 transitions. [2018-10-25 01:55:22,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-10-25 01:55:22,379 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:55:22,379 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:55:22,380 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:55:22,380 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:55:22,380 INFO L82 PathProgramCache]: Analyzing trace with hash -180836774, now seen corresponding path program 1 times [2018-10-25 01:55:22,380 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:55:22,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:55:22,381 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:55:22,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:55:22,382 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:55:22,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:55:22,989 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:55:22,989 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:55:22,989 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:55:22,990 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 122 with the following transitions: [2018-10-25 01:55:22,993 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [978], [980], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 01:55:23,060 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:55:23,060 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:55:24,931 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:55:24,933 INFO L272 AbstractInterpreter]: Visited 83 different actions 235 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-25 01:55:24,975 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:55:24,977 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:55:24,977 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:55:24,977 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:55:24,997 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:55:24,997 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:55:25,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:55:25,106 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:56:38,198 WARN L179 SmtUtils]: Spent 1.21 m on a formula simplification. DAG size of input: 147 DAG size of output: 107 [2018-10-25 01:57:30,645 WARN L179 SmtUtils]: Spent 48.25 s on a formula simplification. DAG size of input: 107 DAG size of output: 80 [2018-10-25 01:57:31,325 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 4 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:57:31,326 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:57:35,680 WARN L179 SmtUtils]: Spent 2.03 s on a formula simplification. DAG size of input: 55 DAG size of output: 16 [2018-10-25 01:57:36,106 WARN L179 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-10-25 01:57:36,109 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-10-25 01:57:36,863 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 1720 Received shutdown request... [2018-10-25 01:59:00,290 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-25 01:59:00,491 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:59:00,492 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-25 01:59:00,497 WARN L205 ceAbstractionStarter]: Timeout [2018-10-25 01:59:00,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 01:59:00 BoogieIcfgContainer [2018-10-25 01:59:00,498 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-25 01:59:00,499 INFO L168 Benchmark]: Toolchain (without parser) took 245395.76 ms. Allocated memory was 1.5 GB in the beginning and 7.5 GB in the end (delta: 6.0 GB). Free memory was 1.4 GB in the beginning and 4.4 GB in the end (delta: -3.0 GB). Peak memory consumption was 5.2 GB. Max. memory is 7.1 GB. [2018-10-25 01:59:00,500 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-25 01:59:00,501 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1822.66 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 140.0 MB). Peak memory consumption was 140.0 MB. Max. memory is 7.1 GB. [2018-10-25 01:59:00,502 INFO L168 Benchmark]: Boogie Procedure Inliner took 536.64 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 796.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -948.2 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. [2018-10-25 01:59:00,503 INFO L168 Benchmark]: Boogie Preprocessor took 307.14 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 28.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. [2018-10-25 01:59:00,504 INFO L168 Benchmark]: RCFGBuilder took 12845.92 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 467.4 MB). Peak memory consumption was 467.4 MB. Max. memory is 7.1 GB. [2018-10-25 01:59:00,504 INFO L168 Benchmark]: TraceAbstraction took 229878.01 ms. Allocated memory was 2.3 GB in the beginning and 7.5 GB in the end (delta: 5.2 GB). Free memory was 1.7 GB in the beginning and 4.4 GB in the end (delta: -2.7 GB). Peak memory consumption was 4.8 GB. Max. memory is 7.1 GB. [2018-10-25 01:59:00,513 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1822.66 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 140.0 MB). Peak memory consumption was 140.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 536.64 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 796.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -948.2 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 307.14 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 28.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12845.92 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 467.4 MB). Peak memory consumption was 467.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 229878.01 ms. Allocated memory was 2.3 GB in the beginning and 7.5 GB in the end (delta: 5.2 GB). Free memory was 1.7 GB in the beginning and 4.4 GB in the end (delta: -2.7 GB). Peak memory consumption was 4.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 125]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 125). Cancelled while BasicCegarLoop was analyzing trace of length 122 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PartialQuantifierElimination was eliminating quantifiers from formula with 1 quantifier alternations,while CnfTransformerHelper was transforming 1720 disjunction. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 229.7s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 10.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 523 SDtfs, 1038 SDslu, 247 SDs, 0 SdLazy, 3037 SolverSat, 756 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1527occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.9s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 1 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 8325 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown