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.epf -i ../../../trunk/examples/svcomp/loops/trex01_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8c3fbe1 [2018-10-22 16:00:05,000 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-22 16:00:05,004 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-22 16:00:05,024 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-22 16:00:05,025 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-22 16:00:05,027 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-22 16:00:05,028 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-22 16:00:05,031 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-22 16:00:05,034 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-22 16:00:05,043 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-22 16:00:05,044 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-22 16:00:05,044 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-22 16:00:05,045 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-22 16:00:05,048 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-22 16:00:05,050 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-22 16:00:05,050 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-22 16:00:05,054 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-22 16:00:05,058 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-22 16:00:05,061 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-22 16:00:05,065 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-22 16:00:05,066 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-22 16:00:05,067 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-22 16:00:05,073 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-22 16:00:05,089 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-22 16:00:05,114 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-22 16:00:05,114 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-22 16:00:05,116 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-22 16:00:05,116 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-22 16:00:05,116 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-22 16:00:05,117 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-22 16:00:05,117 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-22 16:00:05,117 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-22 16:00:05,117 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-22 16:00:05,117 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-22 16:00:05,118 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-22 16:00:05,118 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-22 16:00:05,118 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-22 16:00:05,120 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-22 16:00:05,120 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-22 16:00:05,120 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-22 16:00:05,120 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-22 16:00:05,121 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-22 16:00:05,121 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-22 16:00:05,121 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-22 16:00:05,121 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-22 16:00:05,121 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-22 16:00:05,122 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-22 16:00:05,123 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-22 16:00:05,123 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-22 16:00:05,123 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-22 16:00:05,123 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-22 16:00:05,124 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-22 16:00:05,124 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-22 16:00:05,124 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-22 16:00:05,124 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-22 16:00:05,125 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-22 16:00:05,125 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-22 16:00:05,125 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-22 16:00:05,193 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-22 16:00:05,210 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-22 16:00:05,214 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-22 16:00:05,216 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-22 16:00:05,217 INFO L276 PluginConnector]: CDTParser initialized [2018-10-22 16:00:05,217 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loops/trex01_true-unreach-call_true-termination.i [2018-10-22 16:00:05,289 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0b6c643a1/8614ae148ff246e6a8ac516195d1c52d/FLAGcf49e917a [2018-10-22 16:00:05,740 INFO L298 CDTParser]: Found 1 translation units. [2018-10-22 16:00:05,741 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex01_true-unreach-call_true-termination.i [2018-10-22 16:00:05,753 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0b6c643a1/8614ae148ff246e6a8ac516195d1c52d/FLAGcf49e917a [2018-10-22 16:00:05,773 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0b6c643a1/8614ae148ff246e6a8ac516195d1c52d [2018-10-22 16:00:05,786 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-22 16:00:05,788 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-22 16:00:05,789 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-22 16:00:05,789 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-22 16:00:05,794 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-22 16:00:05,795 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 04:00:05" (1/1) ... [2018-10-22 16:00:05,798 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a0cdd08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:00:05, skipping insertion in model container [2018-10-22 16:00:05,798 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 04:00:05" (1/1) ... [2018-10-22 16:00:05,808 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-22 16:00:05,829 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-22 16:00:06,012 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 16:00:06,017 INFO L189 MainTranslator]: Completed pre-run [2018-10-22 16:00:06,040 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 16:00:06,059 INFO L193 MainTranslator]: Completed translation [2018-10-22 16:00:06,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:00:06 WrapperNode [2018-10-22 16:00:06,059 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-22 16:00:06,060 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-22 16:00:06,060 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-22 16:00:06,061 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-22 16:00:06,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:00:06" (1/1) ... [2018-10-22 16:00:06,078 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:00:06" (1/1) ... [2018-10-22 16:00:06,086 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-22 16:00:06,087 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-22 16:00:06,087 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-22 16:00:06,087 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-22 16:00:06,099 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:00:06" (1/1) ... [2018-10-22 16:00:06,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:00:06" (1/1) ... [2018-10-22 16:00:06,100 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:00:06" (1/1) ... [2018-10-22 16:00:06,101 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:00:06" (1/1) ... [2018-10-22 16:00:06,109 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:00:06" (1/1) ... [2018-10-22 16:00:06,124 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:00:06" (1/1) ... [2018-10-22 16:00:06,126 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:00:06" (1/1) ... [2018-10-22 16:00:06,128 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-22 16:00:06,134 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-22 16:00:06,135 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-22 16:00:06,135 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-22 16:00:06,136 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:00:06" (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 [2018-10-22 16:00:06,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-22 16:00:06,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-22 16:00:06,316 INFO L130 BoogieDeclarations]: Found specification of procedure f [2018-10-22 16:00:06,316 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2018-10-22 16:00:06,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-22 16:00:06,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-22 16:00:06,317 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-22 16:00:06,317 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-22 16:00:06,317 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-22 16:00:06,317 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-22 16:00:06,766 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-22 16:00:06,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 04:00:06 BoogieIcfgContainer [2018-10-22 16:00:06,769 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-22 16:00:06,770 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-22 16:00:06,770 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-22 16:00:06,773 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-22 16:00:06,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 04:00:05" (1/3) ... [2018-10-22 16:00:06,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@123c92dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 04:00:06, skipping insertion in model container [2018-10-22 16:00:06,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:00:06" (2/3) ... [2018-10-22 16:00:06,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@123c92dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 04:00:06, skipping insertion in model container [2018-10-22 16:00:06,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 04:00:06" (3/3) ... [2018-10-22 16:00:06,777 INFO L112 eAbstractionObserver]: Analyzing ICFG trex01_true-unreach-call_true-termination.i [2018-10-22 16:00:06,787 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-22 16:00:06,796 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-22 16:00:06,814 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-22 16:00:06,848 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-22 16:00:06,849 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-22 16:00:06,849 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-22 16:00:06,849 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-22 16:00:06,849 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-22 16:00:06,850 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-22 16:00:06,850 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-22 16:00:06,850 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-22 16:00:06,850 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-22 16:00:06,868 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2018-10-22 16:00:06,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-22 16:00:06,875 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 16:00:06,875 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 16:00:06,878 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 16:00:06,883 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 16:00:06,883 INFO L82 PathProgramCache]: Analyzing trace with hash -623240960, now seen corresponding path program 1 times [2018-10-22 16:00:06,886 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 16:00:06,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 16:00:06,936 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 16:00:06,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 16:00:06,936 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 16:00:06,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 16:00:07,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 16:00:07,037 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 16:00:07,037 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-22 16:00:07,038 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 16:00:07,041 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-22 16:00:07,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-22 16:00:07,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-22 16:00:07,055 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2018-10-22 16:00:07,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 16:00:07,080 INFO L93 Difference]: Finished difference Result 54 states and 73 transitions. [2018-10-22 16:00:07,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-22 16:00:07,081 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2018-10-22 16:00:07,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 16:00:07,090 INFO L225 Difference]: With dead ends: 54 [2018-10-22 16:00:07,090 INFO L226 Difference]: Without dead ends: 17 [2018-10-22 16:00:07,094 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-22 16:00:07,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-10-22 16:00:07,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-10-22 16:00:07,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-22 16:00:07,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-10-22 16:00:07,130 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 14 [2018-10-22 16:00:07,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 16:00:07,130 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2018-10-22 16:00:07,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-22 16:00:07,131 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2018-10-22 16:00:07,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-22 16:00:07,132 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 16:00:07,132 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 16:00:07,132 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 16:00:07,133 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 16:00:07,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1863782436, now seen corresponding path program 1 times [2018-10-22 16:00:07,133 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 16:00:07,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 16:00:07,135 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 16:00:07,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 16:00:07,135 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 16:00:07,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 16:00:07,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 16:00:07,289 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 16:00:07,290 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-22 16:00:07,290 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 16:00:07,291 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-22 16:00:07,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-22 16:00:07,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-22 16:00:07,292 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 5 states. [2018-10-22 16:00:07,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 16:00:07,370 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2018-10-22 16:00:07,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-22 16:00:07,371 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-10-22 16:00:07,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 16:00:07,371 INFO L225 Difference]: With dead ends: 17 [2018-10-22 16:00:07,371 INFO L226 Difference]: Without dead ends: 0 [2018-10-22 16:00:07,373 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-22 16:00:07,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-22 16:00:07,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-22 16:00:07,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-22 16:00:07,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-22 16:00:07,374 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2018-10-22 16:00:07,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 16:00:07,374 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-22 16:00:07,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-22 16:00:07,374 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-22 16:00:07,374 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-22 16:00:07,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-22 16:00:07,429 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-10-22 16:00:07,429 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-22 16:00:07,429 INFO L425 ceAbstractionStarter]: For program point L25(lines 25 26) no Hoare annotation was computed. [2018-10-22 16:00:07,429 INFO L425 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2018-10-22 16:00:07,430 INFO L425 ceAbstractionStarter]: For program point L17(lines 11 33) no Hoare annotation was computed. [2018-10-22 16:00:07,430 INFO L425 ceAbstractionStarter]: For program point L13(lines 13 15) no Hoare annotation was computed. [2018-10-22 16:00:07,430 INFO L425 ceAbstractionStarter]: For program point fEXIT(lines 11 33) no Hoare annotation was computed. [2018-10-22 16:00:07,430 INFO L428 ceAbstractionStarter]: At program point fENTRY(lines 11 33) the Hoare annotation is: true [2018-10-22 16:00:07,430 INFO L425 ceAbstractionStarter]: For program point L24(lines 24 31) no Hoare annotation was computed. [2018-10-22 16:00:07,430 INFO L428 ceAbstractionStarter]: At program point L24-2(lines 22 32) the Hoare annotation is: true [2018-10-22 16:00:07,431 INFO L425 ceAbstractionStarter]: For program point L22-1(lines 22 32) no Hoare annotation was computed. [2018-10-22 16:00:07,431 INFO L425 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2018-10-22 16:00:07,431 INFO L425 ceAbstractionStarter]: For program point L22-3(lines 11 33) no Hoare annotation was computed. [2018-10-22 16:00:07,431 INFO L425 ceAbstractionStarter]: For program point L16-1(line 16) no Hoare annotation was computed. [2018-10-22 16:00:07,431 INFO L421 ceAbstractionStarter]: At program point L16-3(line 16) the Hoare annotation is: (<= 1 f_~z~0) [2018-10-22 16:00:07,432 INFO L421 ceAbstractionStarter]: At program point L16-4(line 16) the Hoare annotation is: (<= 1 f_~z~0) [2018-10-22 16:00:07,432 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-22 16:00:07,432 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-22 16:00:07,432 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-22 16:00:07,432 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-22 16:00:07,432 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 34 42) the Hoare annotation is: true [2018-10-22 16:00:07,432 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 34 42) no Hoare annotation was computed. [2018-10-22 16:00:07,433 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 34 42) no Hoare annotation was computed. [2018-10-22 16:00:07,433 INFO L428 ceAbstractionStarter]: At program point L39(line 39) the Hoare annotation is: true [2018-10-22 16:00:07,433 INFO L425 ceAbstractionStarter]: For program point L39-1(lines 36 40) no Hoare annotation was computed. [2018-10-22 16:00:07,433 INFO L428 ceAbstractionStarter]: At program point L37(line 37) the Hoare annotation is: true [2018-10-22 16:00:07,433 INFO L425 ceAbstractionStarter]: For program point L36(lines 36 40) no Hoare annotation was computed. [2018-10-22 16:00:07,433 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-10-22 16:00:07,434 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-10-22 16:00:07,434 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-10-22 16:00:07,434 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-10-22 16:00:07,434 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-10-22 16:00:07,434 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-10-22 16:00:07,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 04:00:07 BoogieIcfgContainer [2018-10-22 16:00:07,447 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-22 16:00:07,448 INFO L168 Benchmark]: Toolchain (without parser) took 1661.54 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 766.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -764.8 MB). Peak memory consumption was 1.2 MB. Max. memory is 7.1 GB. [2018-10-22 16:00:07,450 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-10-22 16:00:07,451 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.13 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-10-22 16:00:07,452 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.28 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-22 16:00:07,452 INFO L168 Benchmark]: Boogie Preprocessor took 47.09 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-22 16:00:07,453 INFO L168 Benchmark]: RCFGBuilder took 634.55 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 766.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -803.1 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. [2018-10-22 16:00:07,454 INFO L168 Benchmark]: TraceAbstraction took 677.60 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: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 7.1 GB. [2018-10-22 16:00:07,459 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 271.13 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 26.28 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 47.09 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 634.55 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 766.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -803.1 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 677.60 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: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 16]: Loop Invariant Derived loop invariant: 1 <= z - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 33 locations, 1 error locations. SAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 54 SDtfs, 1 SDslu, 35 SDs, 0 SdLazy, 8 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 16 PreInvPairs, 20 NumberOfFragments, 15 HoareAnnotationTreeSize, 16 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 533 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...