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/loop-invariants/const_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-b6335f6 [2018-10-23 10:10:38,111 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 10:10:38,114 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 10:10:38,132 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 10:10:38,134 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 10:10:38,135 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 10:10:38,136 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 10:10:38,139 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 10:10:38,141 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 10:10:38,144 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 10:10:38,145 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 10:10:38,146 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 10:10:38,146 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 10:10:38,151 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 10:10:38,152 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 10:10:38,153 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 10:10:38,162 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 10:10:38,164 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 10:10:38,166 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 10:10:38,172 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 10:10:38,179 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 10:10:38,180 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 10:10:38,182 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 10:10:38,190 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 [2018-10-23 10:10:38,205 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 10:10:38,205 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 10:10:38,206 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 10:10:38,206 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 10:10:38,207 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 10:10:38,207 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 10:10:38,207 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 10:10:38,207 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 10:10:38,207 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 10:10:38,208 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 10:10:38,208 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 10:10:38,208 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 10:10:38,209 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 10:10:38,209 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 10:10:38,209 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 10:10:38,209 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 10:10:38,210 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 10:10:38,210 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 10:10:38,210 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 10:10:38,210 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 10:10:38,210 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 10:10:38,211 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 10:10:38,211 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 10:10:38,211 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 10:10:38,211 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 10:10:38,211 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 10:10:38,212 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 10:10:38,212 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 10:10:38,212 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 10:10:38,212 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 10:10:38,212 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 10:10:38,213 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 10:10:38,213 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 10:10:38,213 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 10:10:38,278 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 10:10:38,295 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 10:10:38,298 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 10:10:38,300 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 10:10:38,301 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 10:10:38,301 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loop-invariants/const_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c [2018-10-23 10:10:38,366 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/06a8a6abe/d5c0d77c4f5d4ee3af2a95c5955212c1/FLAG7f77e1294 [2018-10-23 10:10:38,808 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 10:10:38,808 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/const_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c [2018-10-23 10:10:38,814 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/06a8a6abe/d5c0d77c4f5d4ee3af2a95c5955212c1/FLAG7f77e1294 [2018-10-23 10:10:38,830 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/06a8a6abe/d5c0d77c4f5d4ee3af2a95c5955212c1 [2018-10-23 10:10:38,844 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 10:10:38,846 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 10:10:38,847 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 10:10:38,847 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 10:10:38,850 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 10:10:38,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:10:38" (1/1) ... [2018-10-23 10:10:38,855 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7adbd51b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:10:38, skipping insertion in model container [2018-10-23 10:10:38,855 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:10:38" (1/1) ... [2018-10-23 10:10:38,865 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 10:10:38,891 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 10:10:39,067 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 10:10:39,072 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 10:10:39,091 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 10:10:39,109 INFO L193 MainTranslator]: Completed translation [2018-10-23 10:10:39,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:10:39 WrapperNode [2018-10-23 10:10:39,110 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 10:10:39,111 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 10:10:39,111 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 10:10:39,111 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 10:10:39,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:10:39" (1/1) ... [2018-10-23 10:10:39,127 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:10:39" (1/1) ... [2018-10-23 10:10:39,133 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 10:10:39,133 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 10:10:39,133 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 10:10:39,134 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 10:10:39,142 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:10:39" (1/1) ... [2018-10-23 10:10:39,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:10:39" (1/1) ... [2018-10-23 10:10:39,143 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:10:39" (1/1) ... [2018-10-23 10:10:39,143 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:10:39" (1/1) ... [2018-10-23 10:10:39,146 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:10:39" (1/1) ... [2018-10-23 10:10:39,152 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:10:39" (1/1) ... [2018-10-23 10:10:39,153 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:10:39" (1/1) ... [2018-10-23 10:10:39,154 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 10:10:39,155 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 10:10:39,155 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 10:10:39,155 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 10:10:39,156 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:10:39" (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 [2018-10-23 10:10:39,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 10:10:39,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 10:10:39,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 10:10:39,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 10:10:39,214 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 10:10:39,214 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 10:10:39,214 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-23 10:10:39,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-23 10:10:39,523 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 10:10:39,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:10:39 BoogieIcfgContainer [2018-10-23 10:10:39,524 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 10:10:39,525 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 10:10:39,525 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 10:10:39,528 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 10:10:39,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:10:38" (1/3) ... [2018-10-23 10:10:39,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@905df44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:10:39, skipping insertion in model container [2018-10-23 10:10:39,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:10:39" (2/3) ... [2018-10-23 10:10:39,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@905df44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:10:39, skipping insertion in model container [2018-10-23 10:10:39,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:10:39" (3/3) ... [2018-10-23 10:10:39,532 INFO L112 eAbstractionObserver]: Analyzing ICFG const_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c [2018-10-23 10:10:39,543 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 10:10:39,551 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 10:10:39,589 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 10:10:39,657 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 10:10:39,657 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 10:10:39,657 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 10:10:39,657 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 10:10:39,657 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 10:10:39,658 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 10:10:39,658 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 10:10:39,658 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 10:10:39,677 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-10-23 10:10:39,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-23 10:10:39,684 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 10:10:39,685 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 10:10:39,688 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 10:10:39,694 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 10:10:39,694 INFO L82 PathProgramCache]: Analyzing trace with hash -2066228947, now seen corresponding path program 1 times [2018-10-23 10:10:39,699 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 10:10:39,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 10:10:39,768 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 10:10:39,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 10:10:39,769 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 10:10:39,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 10:10:39,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 10:10:39,934 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 10:10:39,934 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 10:10:39,934 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 10:10:39,938 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 10:10:39,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 10:10:39,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 10:10:39,953 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 3 states. [2018-10-23 10:10:39,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 10:10:39,990 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2018-10-23 10:10:39,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 10:10:39,992 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-10-23 10:10:39,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 10:10:40,001 INFO L225 Difference]: With dead ends: 37 [2018-10-23 10:10:40,002 INFO L226 Difference]: Without dead ends: 16 [2018-10-23 10:10:40,006 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 10:10:40,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-10-23 10:10:40,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-10-23 10:10:40,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-10-23 10:10:40,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2018-10-23 10:10:40,050 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 13 [2018-10-23 10:10:40,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 10:10:40,051 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2018-10-23 10:10:40,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 10:10:40,051 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2018-10-23 10:10:40,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-23 10:10:40,052 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 10:10:40,052 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 10:10:40,053 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 10:10:40,053 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 10:10:40,053 INFO L82 PathProgramCache]: Analyzing trace with hash -2008970645, now seen corresponding path program 1 times [2018-10-23 10:10:40,054 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 10:10:40,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 10:10:40,055 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 10:10:40,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 10:10:40,055 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 10:10:40,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 10:10:40,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 10:10:40,311 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 10:10:40,311 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 10:10:40,315 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 10:10:40,316 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 10:10:40,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 10:10:40,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-23 10:10:40,319 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 5 states. [2018-10-23 10:10:40,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 10:10:40,401 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2018-10-23 10:10:40,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 10:10:40,402 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-10-23 10:10:40,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 10:10:40,402 INFO L225 Difference]: With dead ends: 16 [2018-10-23 10:10:40,402 INFO L226 Difference]: Without dead ends: 0 [2018-10-23 10:10:40,405 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-23 10:10:40,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-23 10:10:40,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-23 10:10:40,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-23 10:10:40,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-23 10:10:40,407 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2018-10-23 10:10:40,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 10:10:40,408 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-23 10:10:40,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 10:10:40,409 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-23 10:10:40,409 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-23 10:10:40,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-23 10:10:40,496 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-10-23 10:10:40,496 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-23 10:10:40,496 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-23 10:10:40,496 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-23 10:10:40,497 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-23 10:10:40,497 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-23 10:10:40,497 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 9 20) no Hoare annotation was computed. [2018-10-23 10:10:40,497 INFO L421 ceAbstractionStarter]: At program point L15(lines 11 18) the Hoare annotation is: (and (<= 0 main_~s~0) (<= main_~s~0 0)) [2018-10-23 10:10:40,497 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 9 20) no Hoare annotation was computed. [2018-10-23 10:10:40,498 INFO L425 ceAbstractionStarter]: For program point L11-1(lines 11 18) no Hoare annotation was computed. [2018-10-23 10:10:40,498 INFO L425 ceAbstractionStarter]: For program point L11-3(lines 11 18) no Hoare annotation was computed. [2018-10-23 10:10:40,498 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 9 20) the Hoare annotation is: true [2018-10-23 10:10:40,498 INFO L421 ceAbstractionStarter]: At program point L16(line 16) the Hoare annotation is: (and (<= 0 main_~s~0) (<= main_~s~0 0)) [2018-10-23 10:10:40,498 INFO L425 ceAbstractionStarter]: For program point L12(lines 12 14) no Hoare annotation was computed. [2018-10-23 10:10:40,498 INFO L425 ceAbstractionStarter]: For program point L12-2(lines 11 18) no Hoare annotation was computed. [2018-10-23 10:10:40,499 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-10-23 10:10:40,499 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-10-23 10:10:40,499 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-10-23 10:10:40,499 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-10-23 10:10:40,499 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-10-23 10:10:40,500 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-10-23 10:10:40,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 10:10:40 BoogieIcfgContainer [2018-10-23 10:10:40,517 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 10:10:40,518 INFO L168 Benchmark]: Toolchain (without parser) took 1673.45 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 760.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -765.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 10:10:40,521 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-10-23 10:10:40,522 INFO L168 Benchmark]: CACSL2BoogieTranslator took 263.62 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. [2018-10-23 10:10:40,524 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.54 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. [2018-10-23 10:10:40,525 INFO L168 Benchmark]: Boogie Preprocessor took 21.13 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. [2018-10-23 10:10:40,525 INFO L168 Benchmark]: RCFGBuilder took 369.17 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 760.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -819.1 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2018-10-23 10:10:40,526 INFO L168 Benchmark]: TraceAbstraction took 992.27 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: 43.2 MB). Peak memory consumption was 43.2 MB. Max. memory is 7.1 GB. [2018-10-23 10:10:40,535 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 263.62 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 22.54 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 21.13 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 369.17 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 760.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -819.1 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 992.27 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: 43.2 MB). Peak memory consumption was 43.2 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: 11]: Loop Invariant Derived loop invariant: 0 <= s && s <= 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. SAFE Result, 0.8s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 32 SDtfs, 14 SDslu, 37 SDs, 0 SdLazy, 11 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 7 LocationsWithAnnotation, 8 PreInvPairs, 10 NumberOfFragments, 19 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 14 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 696 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...