java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label50_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 00:29:01,807 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 00:29:01,812 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 00:29:01,829 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 00:29:01,829 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 00:29:01,830 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 00:29:01,832 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 00:29:01,834 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 00:29:01,835 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 00:29:01,836 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 00:29:01,837 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 00:29:01,837 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 00:29:01,838 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 00:29:01,839 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 00:29:01,840 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 00:29:01,841 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 00:29:01,842 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 00:29:01,844 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 00:29:01,846 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 00:29:01,848 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 00:29:01,849 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 00:29:01,850 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 00:29:01,853 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 00:29:01,866 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 00:29:01,886 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 00:29:01,886 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 00:29:01,888 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 00:29:01,888 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 00:29:01,888 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 00:29:01,888 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 00:29:01,888 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 00:29:01,889 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 00:29:01,889 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 00:29:01,889 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 00:29:01,889 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 00:29:01,889 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 00:29:01,890 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 00:29:01,891 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 00:29:01,891 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 00:29:01,891 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 00:29:01,891 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 00:29:01,891 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 00:29:01,892 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 00:29:01,892 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 00:29:01,892 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 00:29:01,892 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 00:29:01,892 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 00:29:01,893 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 00:29:01,893 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 00:29:01,893 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 00:29:01,893 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 00:29:01,893 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 00:29:01,894 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 00:29:01,894 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 00:29:01,894 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 00:29:01,894 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 00:29:01,894 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 00:29:01,895 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 00:29:01,942 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 00:29:01,955 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 00:29:01,959 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 00:29:01,961 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 00:29:01,962 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 00:29:01,962 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label50_false-unreach-call.c [2018-11-07 00:29:02,024 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10f0c12dd/0f74be935d4d4c698b993e24f5e7a078/FLAG611864dad [2018-11-07 00:29:02,690 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 00:29:02,691 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label50_false-unreach-call.c [2018-11-07 00:29:02,713 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10f0c12dd/0f74be935d4d4c698b993e24f5e7a078/FLAG611864dad [2018-11-07 00:29:02,729 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10f0c12dd/0f74be935d4d4c698b993e24f5e7a078 [2018-11-07 00:29:02,742 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 00:29:02,744 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 00:29:02,745 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 00:29:02,745 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 00:29:02,749 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 00:29:02,750 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:29:02" (1/1) ... [2018-11-07 00:29:02,753 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f322134 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:02, skipping insertion in model container [2018-11-07 00:29:02,754 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:29:02" (1/1) ... [2018-11-07 00:29:02,765 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 00:29:02,860 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 00:29:03,802 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:29:03,807 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 00:29:04,104 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:29:04,126 INFO L193 MainTranslator]: Completed translation [2018-11-07 00:29:04,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:04 WrapperNode [2018-11-07 00:29:04,126 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 00:29:04,127 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 00:29:04,128 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 00:29:04,128 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 00:29:04,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:04" (1/1) ... [2018-11-07 00:29:04,346 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:04" (1/1) ... [2018-11-07 00:29:04,359 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 00:29:04,360 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 00:29:04,360 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 00:29:04,360 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 00:29:04,370 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:04" (1/1) ... [2018-11-07 00:29:04,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:04" (1/1) ... [2018-11-07 00:29:04,378 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:04" (1/1) ... [2018-11-07 00:29:04,378 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:04" (1/1) ... [2018-11-07 00:29:04,466 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:04" (1/1) ... [2018-11-07 00:29:04,501 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:04" (1/1) ... [2018-11-07 00:29:04,523 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:04" (1/1) ... [2018-11-07 00:29:04,541 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 00:29:04,542 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 00:29:04,542 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 00:29:04,542 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 00:29:04,543 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:04" (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 [2018-11-07 00:29:04,613 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 00:29:04,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 00:29:04,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 00:29:04,614 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 00:29:04,614 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 00:29:04,614 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 00:29:04,615 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 00:29:04,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 00:29:04,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 00:29:04,615 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 00:29:04,615 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 00:29:10,332 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 00:29:10,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:29:10 BoogieIcfgContainer [2018-11-07 00:29:10,333 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 00:29:10,334 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 00:29:10,334 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 00:29:10,337 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 00:29:10,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:29:02" (1/3) ... [2018-11-07 00:29:10,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5045f997 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:29:10, skipping insertion in model container [2018-11-07 00:29:10,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:04" (2/3) ... [2018-11-07 00:29:10,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5045f997 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:29:10, skipping insertion in model container [2018-11-07 00:29:10,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:29:10" (3/3) ... [2018-11-07 00:29:10,341 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label50_false-unreach-call.c [2018-11-07 00:29:10,351 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 00:29:10,361 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 00:29:10,379 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 00:29:10,420 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 00:29:10,420 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 00:29:10,420 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 00:29:10,421 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 00:29:10,421 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 00:29:10,421 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 00:29:10,421 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 00:29:10,421 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 00:29:10,457 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-07 00:29:10,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-07 00:29:10,464 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:29:10,465 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:29:10,468 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:29:10,474 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:29:10,475 INFO L82 PathProgramCache]: Analyzing trace with hash 849169321, now seen corresponding path program 1 times [2018-11-07 00:29:10,477 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:29:10,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:29:10,536 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:29:10,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:29:10,537 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:29:10,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:29:10,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:29:10,932 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:29:10,933 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 00:29:10,933 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:29:10,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 00:29:10,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 00:29:10,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 00:29:10,954 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-11-07 00:29:17,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:29:17,320 INFO L93 Difference]: Finished difference Result 1501 states and 2761 transitions. [2018-11-07 00:29:17,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 00:29:17,322 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2018-11-07 00:29:17,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:29:17,347 INFO L225 Difference]: With dead ends: 1501 [2018-11-07 00:29:17,347 INFO L226 Difference]: Without dead ends: 1057 [2018-11-07 00:29:17,356 INFO L604 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 [2018-11-07 00:29:17,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2018-11-07 00:29:17,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 744. [2018-11-07 00:29:17,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-07 00:29:17,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1125 transitions. [2018-11-07 00:29:17,466 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1125 transitions. Word has length 19 [2018-11-07 00:29:17,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:29:17,467 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1125 transitions. [2018-11-07 00:29:17,467 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 00:29:17,468 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1125 transitions. [2018-11-07 00:29:17,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-11-07 00:29:17,472 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:29:17,473 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:29:17,473 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:29:17,473 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:29:17,474 INFO L82 PathProgramCache]: Analyzing trace with hash -654320835, now seen corresponding path program 1 times [2018-11-07 00:29:17,474 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:29:17,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:29:17,475 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:29:17,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:29:17,476 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:29:17,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:29:17,780 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:29:17,780 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:29:17,781 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 00:29:17,781 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:29:17,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 00:29:17,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 00:29:17,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 00:29:17,783 INFO L87 Difference]: Start difference. First operand 744 states and 1125 transitions. Second operand 4 states. [2018-11-07 00:29:23,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:29:23,100 INFO L93 Difference]: Finished difference Result 2731 states and 4243 transitions. [2018-11-07 00:29:23,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 00:29:23,104 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2018-11-07 00:29:23,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:29:23,119 INFO L225 Difference]: With dead ends: 2731 [2018-11-07 00:29:23,119 INFO L226 Difference]: Without dead ends: 1993 [2018-11-07 00:29:23,126 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 00:29:23,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1993 states. [2018-11-07 00:29:23,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1993 to 1989. [2018-11-07 00:29:23,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1989 states. [2018-11-07 00:29:23,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1989 states to 1989 states and 2769 transitions. [2018-11-07 00:29:23,236 INFO L78 Accepts]: Start accepts. Automaton has 1989 states and 2769 transitions. Word has length 89 [2018-11-07 00:29:23,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:29:23,237 INFO L480 AbstractCegarLoop]: Abstraction has 1989 states and 2769 transitions. [2018-11-07 00:29:23,237 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 00:29:23,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1989 states and 2769 transitions. [2018-11-07 00:29:23,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2018-11-07 00:29:23,262 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:29:23,262 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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] [2018-11-07 00:29:23,263 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:29:23,263 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:29:23,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1953806169, now seen corresponding path program 1 times [2018-11-07 00:29:23,263 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:29:23,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:29:23,265 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:29:23,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:29:23,265 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:29:23,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:29:23,815 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 27 proven. 87 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-07 00:29:23,816 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:29:23,816 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:29:23,817 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 240 with the following transitions: [2018-11-07 00:29:23,819 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [125], [127], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [816], [821], [823], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 00:29:23,895 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:29:23,896 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:29:26,001 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:29:37,253 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:29:37,255 INFO L272 AbstractInterpreter]: Visited 130 different actions 377 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 00:29:37,264 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:29:37,264 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:29:41,144 INFO L227 lantSequenceWeakener]: Weakened 28 states. On average, predicates are now at 78.25% of their original sizes. [2018-11-07 00:29:41,144 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:31:20,548 INFO L415 sIntCurrentIteration]: We unified 238 AI predicates to 238 [2018-11-07 00:31:20,549 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:31:20,550 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:31:20,550 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [6] total 21 [2018-11-07 00:31:20,551 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:31:20,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 00:31:20,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 00:31:20,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2018-11-07 00:31:20,553 INFO L87 Difference]: Start difference. First operand 1989 states and 2769 transitions. Second operand 17 states. Received shutdown request... [2018-11-07 00:33:14,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-07 00:33:14,896 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 00:33:14,901 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 00:33:14,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:33:14 BoogieIcfgContainer [2018-11-07 00:33:14,902 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 00:33:14,902 INFO L168 Benchmark]: Toolchain (without parser) took 252159.58 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-11-07 00:33:14,905 INFO L168 Benchmark]: CDTParser took 0.25 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. [2018-11-07 00:33:14,905 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1381.73 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: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. [2018-11-07 00:33:14,906 INFO L168 Benchmark]: Boogie Procedure Inliner took 231.91 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 731.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -874.0 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. [2018-11-07 00:33:14,907 INFO L168 Benchmark]: Boogie Preprocessor took 181.86 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: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2018-11-07 00:33:14,908 INFO L168 Benchmark]: RCFGBuilder took 5791.20 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 280.0 MB). Peak memory consumption was 280.0 MB. Max. memory is 7.1 GB. [2018-11-07 00:33:14,909 INFO L168 Benchmark]: TraceAbstraction took 244567.80 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 2.7 GB in the end (delta: -810.7 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-11-07 00:33:14,915 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 1381.73 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: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 231.91 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 731.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -874.0 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 181.86 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: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5791.20 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 280.0 MB). Peak memory consumption was 280.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 244567.80 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 2.7 GB in the end (delta: -810.7 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 43]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 43). Cancelled while BasicCegarLoop was constructing difference of abstraction (1989states) and FLOYD_HOARE automaton (currently 19 states, 17 states before enhancement),while ReachableStatesComputation was computing reachable states (848 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 244.4s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 126.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 657 SDtfs, 4156 SDslu, 417 SDs, 0 SdLazy, 4718 SolverSat, 1311 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 45.7s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 260 GetRequests, 128 SyntacticMatches, 102 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 588 ImplicationChecksByTransitivity, 104.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1989occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 13.4s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9952274388016079 AbsIntWeakeningRatio, 0.1134453781512605 AbsIntAvgWeakeningVarsNumRemoved, 90.60084033613445 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 2 MinimizatonAttempts, 317 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 347 NumberOfCodeBlocks, 347 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 344 ConstructedInterpolants, 0 QuantifiedInterpolants, 348356 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 45/132 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown