java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/ldv-regression/test16.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:02:34,009 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:02:34,012 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:02:34,031 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:02:34,032 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:02:34,034 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:02:34,036 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:02:34,046 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:02:34,050 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:02:34,054 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:02:34,055 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:02:34,057 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:02:34,057 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:02:34,059 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:02:34,061 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:02:34,063 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:02:34,065 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:02:34,066 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:02:34,067 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:02:34,073 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:02:34,078 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:02:34,081 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:02:34,084 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:02:34,085 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:02:34,087 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 21:02:34,097 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:02:34,098 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:02:34,100 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:02:34,100 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:02:34,131 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:02:34,131 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:02:34,132 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:02:34,132 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:02:34,133 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:02:34,133 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:02:34,133 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:02:34,133 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:02:34,133 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:02:34,134 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:02:34,134 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:02:34,134 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:02:34,134 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:02:34,134 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:02:34,134 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:02:34,135 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:02:34,135 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:02:34,135 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:02:34,138 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:02:34,139 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:02:34,139 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:02:34,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:02:34,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:02:34,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:02:34,141 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:02:34,141 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:02:34,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:02:34,141 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:02:34,142 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:02:34,431 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:02:34,452 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:02:34,455 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:02:34,457 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:02:34,457 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:02:34,458 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test16.c [2019-10-13 21:02:34,539 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72052afb7/116d1fbdbeaa49ca8397cacbfd1ab24c/FLAG741a76909 [2019-10-13 21:02:35,015 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:02:35,016 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test16.c [2019-10-13 21:02:35,022 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72052afb7/116d1fbdbeaa49ca8397cacbfd1ab24c/FLAG741a76909 [2019-10-13 21:02:35,517 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72052afb7/116d1fbdbeaa49ca8397cacbfd1ab24c [2019-10-13 21:02:35,527 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:02:35,528 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:02:35,529 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:02:35,529 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:02:35,533 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:02:35,534 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:02:35" (1/1) ... [2019-10-13 21:02:35,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad721c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:35, skipping insertion in model container [2019-10-13 21:02:35,537 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:02:35" (1/1) ... [2019-10-13 21:02:35,544 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:02:35,559 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:02:35,725 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:02:35,737 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:02:35,752 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:02:35,768 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:02:35,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:35 WrapperNode [2019-10-13 21:02:35,768 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:02:35,769 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:02:35,769 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:02:35,769 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:02:35,860 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:35" (1/1) ... [2019-10-13 21:02:35,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:35" (1/1) ... [2019-10-13 21:02:35,868 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:35" (1/1) ... [2019-10-13 21:02:35,868 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:35" (1/1) ... [2019-10-13 21:02:35,873 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:35" (1/1) ... [2019-10-13 21:02:35,875 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:35" (1/1) ... [2019-10-13 21:02:35,877 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:35" (1/1) ... [2019-10-13 21:02:35,878 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:02:35,879 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:02:35,879 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:02:35,879 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:02:35,880 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:02:35,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:02:35,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:02:35,931 INFO L138 BoogieDeclarations]: Found implementation of procedure equal [2019-10-13 21:02:35,931 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:02:35,931 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:02:35,932 INFO L130 BoogieDeclarations]: Found specification of procedure equal [2019-10-13 21:02:35,932 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:02:35,932 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:02:35,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:02:35,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:02:35,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:02:35,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:02:35,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:02:35,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:02:36,142 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:02:36,142 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-13 21:02:36,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:02:36 BoogieIcfgContainer [2019-10-13 21:02:36,144 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:02:36,145 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:02:36,146 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:02:36,153 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:02:36,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:02:35" (1/3) ... [2019-10-13 21:02:36,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18a2fa2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:02:36, skipping insertion in model container [2019-10-13 21:02:36,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:35" (2/3) ... [2019-10-13 21:02:36,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18a2fa2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:02:36, skipping insertion in model container [2019-10-13 21:02:36,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:02:36" (3/3) ... [2019-10-13 21:02:36,157 INFO L109 eAbstractionObserver]: Analyzing ICFG test16.c [2019-10-13 21:02:36,172 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:02:36,180 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:02:36,193 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:02:36,229 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:02:36,229 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:02:36,230 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:02:36,230 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:02:36,230 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:02:36,231 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:02:36,231 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:02:36,231 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:02:36,260 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-10-13 21:02:36,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-13 21:02:36,268 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:02:36,270 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:02:36,274 INFO L410 AbstractCegarLoop]: === Iteration 1 === [equalErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:02:36,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:02:36,281 INFO L82 PathProgramCache]: Analyzing trace with hash 390654600, now seen corresponding path program 1 times [2019-10-13 21:02:36,310 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:02:36,311 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784344137] [2019-10-13 21:02:36,311 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:02:36,312 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:02:36,312 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:02:36,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:02:36,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:02:36,595 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784344137] [2019-10-13 21:02:36,596 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:02:36,596 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:02:36,596 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628380633] [2019-10-13 21:02:36,600 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:02:36,602 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:02:36,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:02:36,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:02:36,616 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 6 states. [2019-10-13 21:02:36,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:02:36,797 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2019-10-13 21:02:36,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:02:36,798 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-10-13 21:02:36,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:02:36,804 INFO L225 Difference]: With dead ends: 25 [2019-10-13 21:02:36,805 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 21:02:36,808 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:02:36,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 21:02:36,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 21:02:36,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 21:02:36,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 21:02:36,833 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2019-10-13 21:02:36,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:02:36,834 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 21:02:36,834 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:02:36,834 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 21:02:36,834 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 21:02:36,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 21:02:36,955 INFO L443 ceAbstractionStarter]: For program point equalEXIT(lines 4 12) no Hoare annotation was computed. [2019-10-13 21:02:36,956 INFO L446 ceAbstractionStarter]: At program point equalENTRY(lines 4 12) the Hoare annotation is: true [2019-10-13 21:02:36,956 INFO L443 ceAbstractionStarter]: For program point equalFINAL(lines 4 12) no Hoare annotation was computed. [2019-10-13 21:02:36,956 INFO L439 ceAbstractionStarter]: At program point L6(lines 4 12) the Hoare annotation is: (or (= |~#a~0.base| |~#b~0.base|) (not (= (select (select |#memory_int| |equal_#in~b.base|) |equal_#in~b.offset|) (select (select |#memory_int| |equal_#in~a.base|) |equal_#in~a.offset|))) (not (= (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|) (select (select |#memory_int| |~#b~0.base|) |~#b~0.offset|)))) [2019-10-13 21:02:36,956 INFO L443 ceAbstractionStarter]: For program point L5(lines 5 7) no Hoare annotation was computed. [2019-10-13 21:02:36,957 INFO L443 ceAbstractionStarter]: For program point equalErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2019-10-13 21:02:36,957 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-13 21:02:36,957 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-13 21:02:36,958 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-13 21:02:36,958 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-13 21:02:36,958 INFO L439 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (and (not (= |~#b~0.base| |~#a~0.base|)) (= (select (select |#memory_int| |~#b~0.base|) |~#b~0.offset|) (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|))) [2019-10-13 21:02:36,958 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-13 21:02:36,958 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-13 21:02:36,959 INFO L439 ceAbstractionStarter]: At program point mainENTRY(lines 17 28) the Hoare annotation is: (or (= |~#a~0.base| |~#b~0.base|) (= (select (select |#memory_int| |~#b~0.base|) |~#b~0.offset|) (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|)) (not (= (select (select |old(#memory_int)| |~#a~0.base|) |~#a~0.offset|) (select (select |old(#memory_int)| |~#b~0.base|) |~#b~0.offset|)))) [2019-10-13 21:02:36,959 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 17 28) no Hoare annotation was computed. [2019-10-13 21:02:36,961 INFO L439 ceAbstractionStarter]: At program point L26(line 26) the Hoare annotation is: (or (= |~#a~0.base| |~#b~0.base|) (= (select (select |#memory_int| |~#b~0.base|) |~#b~0.offset|) (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|)) (not (= (select (select |old(#memory_int)| |~#a~0.base|) |~#a~0.offset|) (select (select |old(#memory_int)| |~#b~0.base|) |~#b~0.offset|)))) [2019-10-13 21:02:36,962 INFO L443 ceAbstractionStarter]: For program point L26-1(line 26) no Hoare annotation was computed. [2019-10-13 21:02:36,962 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 17 28) no Hoare annotation was computed. [2019-10-13 21:02:36,979 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-13 21:02:36,980 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-13 21:02:36,980 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-13 21:02:36,980 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-13 21:02:36,991 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-13 21:02:36,991 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-13 21:02:36,991 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-13 21:02:36,992 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-13 21:02:36,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 09:02:36 BoogieIcfgContainer [2019-10-13 21:02:36,996 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 21:02:36,999 INFO L168 Benchmark]: Toolchain (without parser) took 1469.18 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 102.6 MB in the beginning and 123.3 MB in the end (delta: -20.8 MB). Peak memory consumption was 36.4 MB. Max. memory is 7.1 GB. [2019-10-13 21:02:36,999 INFO L168 Benchmark]: CDTParser took 1.28 ms. Allocated memory is still 146.3 MB. Free memory is still 121.0 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-10-13 21:02:37,003 INFO L168 Benchmark]: CACSL2BoogieTranslator took 239.24 ms. Allocated memory is still 146.3 MB. Free memory was 102.2 MB in the beginning and 92.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2019-10-13 21:02:37,006 INFO L168 Benchmark]: Boogie Preprocessor took 109.84 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 92.7 MB in the beginning and 181.5 MB in the end (delta: -88.8 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2019-10-13 21:02:37,007 INFO L168 Benchmark]: RCFGBuilder took 265.38 ms. Allocated memory is still 203.4 MB. Free memory was 181.1 MB in the beginning and 168.6 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2019-10-13 21:02:37,009 INFO L168 Benchmark]: TraceAbstraction took 850.40 ms. Allocated memory is still 203.4 MB. Free memory was 167.7 MB in the beginning and 123.3 MB in the end (delta: 44.4 MB). Peak memory consumption was 44.4 MB. Max. memory is 7.1 GB. [2019-10-13 21:02:37,020 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.28 ms. Allocated memory is still 146.3 MB. Free memory is still 121.0 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 239.24 ms. Allocated memory is still 146.3 MB. Free memory was 102.2 MB in the beginning and 92.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 109.84 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 92.7 MB in the beginning and 181.5 MB in the end (delta: -88.8 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 265.38 ms. Allocated memory is still 203.4 MB. Free memory was 181.1 MB in the beginning and 168.6 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 850.40 ms. Allocated memory is still 203.4 MB. Free memory was 167.7 MB in the beginning and 123.3 MB in the end (delta: 44.4 MB). Peak memory consumption was 44.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 10]: 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: 4]: Loop Invariant [2019-10-13 21:02:37,040 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-13 21:02:37,040 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-13 21:02:37,040 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-13 21:02:37,041 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-13 21:02:37,043 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-13 21:02:37,044 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-13 21:02:37,045 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-13 21:02:37,045 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (a == b || !(unknown-#memory_int-unknown[b][b] == unknown-#memory_int-unknown[a][a])) || !(unknown-#memory_int-unknown[a][a] == unknown-#memory_int-unknown[b][b]) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. Result: SAFE, OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 11 SDtfs, 13 SDslu, 18 SDs, 0 SdLazy, 13 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 101 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 64 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 387 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...