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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/array-examples/standard_palindrome_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 00:12:45,725 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2019-10-07 00:12:45,740 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 00:12:45,741 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 00:12:45,742 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 00:12:45,744 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 00:12:45,746 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 00:12:45,746 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 00:12:45,747 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 00:12:45,749 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 00:12:45,749 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 00:12:45,750 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 00:12:45,751 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 00:12:45,752 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 00:12:45,753 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 00:12:45,754 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 00:12:45,756 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 00:12:45,758 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 00:12:45,759 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 00:12:45,761 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 00:12:45,762 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 00:12:45,763 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 00:12:45,766 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-07 00:12:45,784 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 00:12:45,785 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 00:12:45,786 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 00:12:45,790 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 [2019-10-07 00:12:45,813 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 00:12:45,813 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 00:12:45,814 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 00:12:45,814 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 00:12:45,815 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 00:12:45,815 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 00:12:45,815 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 00:12:45,815 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 00:12:45,815 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 00:12:45,816 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 00:12:45,816 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 00:12:45,816 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 00:12:45,816 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 00:12:45,816 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 00:12:45,817 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 00:12:45,817 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 00:12:45,817 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 00:12:45,817 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 00:12:45,818 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 00:12:45,818 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 00:12:45,818 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 00:12:45,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 00:12:45,818 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 00:12:45,819 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 00:12:45,819 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 00:12:45,819 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 00:12:45,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 00:12:45,819 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 00:12:45,820 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-07 00:12:46,119 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 00:12:46,132 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 00:12:46,136 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 00:12:46,138 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 00:12:46,138 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 00:12:46,139 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_palindrome_ground.i [2019-10-07 00:12:46,204 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03e9a5544/cd789926535641b2931f63c7ba23a053/FLAG1c7fc820c [2019-10-07 00:12:46,620 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 00:12:46,621 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_palindrome_ground.i [2019-10-07 00:12:46,628 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03e9a5544/cd789926535641b2931f63c7ba23a053/FLAG1c7fc820c [2019-10-07 00:12:46,983 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03e9a5544/cd789926535641b2931f63c7ba23a053 [2019-10-07 00:12:46,992 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 00:12:46,994 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 00:12:47,000 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 00:12:47,001 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 00:12:47,003 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 00:12:47,004 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:12:46" (1/1) ... [2019-10-07 00:12:47,007 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d09c68a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:12:47, skipping insertion in model container [2019-10-07 00:12:47,007 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:12:46" (1/1) ... [2019-10-07 00:12:47,013 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 00:12:47,028 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 00:12:47,201 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 00:12:47,213 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 00:12:47,243 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 00:12:47,263 INFO L192 MainTranslator]: Completed translation [2019-10-07 00:12:47,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:12:47 WrapperNode [2019-10-07 00:12:47,263 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 00:12:47,264 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 00:12:47,264 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 00:12:47,264 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 00:12:47,353 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:12:47" (1/1) ... [2019-10-07 00:12:47,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:12:47" (1/1) ... [2019-10-07 00:12:47,363 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:12:47" (1/1) ... [2019-10-07 00:12:47,363 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:12:47" (1/1) ... [2019-10-07 00:12:47,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:12:47" (1/1) ... [2019-10-07 00:12:47,376 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:12:47" (1/1) ... [2019-10-07 00:12:47,377 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:12:47" (1/1) ... [2019-10-07 00:12:47,379 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 00:12:47,380 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 00:12:47,380 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 00:12:47,380 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 00:12:47,381 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:12:47" (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 [2019-10-07 00:12:47,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 00:12:47,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 00:12:47,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-07 00:12:47,435 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 00:12:47,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 00:12:47,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-07 00:12:47,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 00:12:47,436 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 00:12:47,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 00:12:47,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 00:12:47,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 00:12:47,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 00:12:47,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 00:12:47,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 00:12:47,808 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 00:12:47,808 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-07 00:12:47,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 12:12:47 BoogieIcfgContainer [2019-10-07 00:12:47,810 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 00:12:47,811 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 00:12:47,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 00:12:47,815 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 00:12:47,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 12:12:46" (1/3) ... [2019-10-07 00:12:47,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50343028 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 12:12:47, skipping insertion in model container [2019-10-07 00:12:47,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:12:47" (2/3) ... [2019-10-07 00:12:47,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50343028 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 12:12:47, skipping insertion in model container [2019-10-07 00:12:47,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 12:12:47" (3/3) ... [2019-10-07 00:12:47,820 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_palindrome_ground.i [2019-10-07 00:12:47,830 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 00:12:47,838 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 00:12:47,850 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 00:12:47,880 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 00:12:47,880 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 00:12:47,880 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 00:12:47,881 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 00:12:47,881 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 00:12:47,881 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 00:12:47,881 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 00:12:47,881 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 00:12:47,898 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-10-07 00:12:47,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-07 00:12:47,903 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:12:47,904 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:12:47,906 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:12:47,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:12:47,911 INFO L82 PathProgramCache]: Analyzing trace with hash -973561822, now seen corresponding path program 1 times [2019-10-07 00:12:47,918 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:12:47,918 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:12:47,918 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:12:47,919 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:12:47,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:12:48,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:12:48,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:12:48,077 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:12:48,078 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:12:48,078 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 00:12:48,082 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 00:12:48,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 00:12:48,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 00:12:48,098 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2019-10-07 00:12:48,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:12:48,146 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2019-10-07 00:12:48,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 00:12:48,148 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2019-10-07 00:12:48,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:12:48,157 INFO L225 Difference]: With dead ends: 34 [2019-10-07 00:12:48,157 INFO L226 Difference]: Without dead ends: 18 [2019-10-07 00:12:48,161 INFO L606 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 [2019-10-07 00:12:48,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-10-07 00:12:48,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-10-07 00:12:48,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-10-07 00:12:48,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2019-10-07 00:12:48,199 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 12 [2019-10-07 00:12:48,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:12:48,200 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2019-10-07 00:12:48,200 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 00:12:48,200 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2019-10-07 00:12:48,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-07 00:12:48,201 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:12:48,201 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:12:48,202 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:12:48,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:12:48,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1894348460, now seen corresponding path program 1 times [2019-10-07 00:12:48,203 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:12:48,203 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:12:48,203 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:12:48,204 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:12:48,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:12:48,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:12:48,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-07 00:12:48,279 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:12:48,280 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:12:48,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:12:48,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:12:48,343 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 00:12:48,351 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:12:48,381 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-07 00:12:48,381 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:12:48,429 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-07 00:12:48,430 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:12:48,464 INFO L162 IcfgInterpreter]: Started Sifa with 13 locations of interest [2019-10-07 00:12:48,465 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:12:48,491 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:12:48,503 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:12:48,504 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:12:48,687 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-07 00:12:49,165 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 26 for LOIs [2019-10-07 00:12:49,193 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-07 00:12:49,211 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 00:12:49,212 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 00:12:49,212 INFO L193 IcfgInterpreter]: Reachable states at location L14-3 satisfy 111#(and (<= 0 main_~i~0) (= main_~x~0 0) (<= 50000 main_~i~0) (not (< main_~i~0 50000)) (<= main_~x~0 0) (<= 0 main_~x~0)) [2019-10-07 00:12:49,212 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 126#(and (exists ((v_prenex_2 Int) (|v_main_~#A~0.base_BEFORE_CALL_1| Int) (v_prenex_1 Int) (|v_main_~#A~0.offset_BEFORE_CALL_1| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| v_prenex_1) (+ v_prenex_2 399996)) (select (select |#memory_int| v_prenex_1) v_prenex_2)))) (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_1|) (+ |v_main_~#A~0.offset_BEFORE_CALL_1| 399996)) (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_1|) |v_main_~#A~0.offset_BEFORE_CALL_1|))))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:12:49,213 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 131#(and (<= __VERIFIER_assert_~cond 0) (exists ((v_prenex_2 Int) (|v_main_~#A~0.base_BEFORE_CALL_1| Int) (v_prenex_1 Int) (|v_main_~#A~0.offset_BEFORE_CALL_1| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| v_prenex_1) (+ v_prenex_2 399996)) (select (select |#memory_int| v_prenex_1) v_prenex_2)))) (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_1|) (+ |v_main_~#A~0.offset_BEFORE_CALL_1| 399996)) (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_1|) |v_main_~#A~0.offset_BEFORE_CALL_1|))))) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:12:49,213 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 140#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 00:12:49,214 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 136#(and (<= __VERIFIER_assert_~cond 0) (exists ((v_prenex_2 Int) (|v_main_~#A~0.base_BEFORE_CALL_1| Int) (v_prenex_1 Int) (|v_main_~#A~0.offset_BEFORE_CALL_1| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| v_prenex_1) (+ v_prenex_2 399996)) (select (select |#memory_int| v_prenex_1) v_prenex_2)))) (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_1|) (+ |v_main_~#A~0.offset_BEFORE_CALL_1| 399996)) (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_1|) |v_main_~#A~0.offset_BEFORE_CALL_1|))))) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:12:49,214 INFO L193 IcfgInterpreter]: Reachable states at location L7-3 satisfy 68#true [2019-10-07 00:12:49,215 INFO L193 IcfgInterpreter]: Reachable states at location L15 satisfy 116#(and (= (select (select |#memory_int| |main_~#A~0.base|) (+ (* (- 4) main_~x~0) |main_~#A~0.offset| 399996)) |main_#t~mem6|) (< main_~x~0 50000) (<= 0 main_~i~0) (= (select (select |#memory_int| |main_~#A~0.base|) (+ (* 4 main_~x~0) |main_~#A~0.offset|)) |main_#t~mem5|) (= main_~x~0 0) (<= 50000 main_~i~0) (not (< main_~i~0 50000)) (<= main_~x~0 0) (<= 0 main_~x~0)) [2019-10-07 00:12:49,216 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:12:49,216 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:12:49,216 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 145#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:12:49,217 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 00:12:49,218 INFO L193 IcfgInterpreter]: Reachable states at location L10-3 satisfy 106#(<= 0 main_~i~0) [2019-10-07 00:12:49,218 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 121#(exists ((v_prenex_2 Int) (|v_main_~#A~0.base_BEFORE_CALL_1| Int) (v_prenex_1 Int) (|v_main_~#A~0.offset_BEFORE_CALL_1| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| v_prenex_1) (+ v_prenex_2 399996)) (select (select |#memory_int| v_prenex_1) v_prenex_2)))) (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_1|) (+ |v_main_~#A~0.offset_BEFORE_CALL_1| 399996)) (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_1|) |v_main_~#A~0.offset_BEFORE_CALL_1|))))) [2019-10-07 00:12:49,567 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 00:12:49,567 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 11] total 16 [2019-10-07 00:12:49,569 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-07 00:12:49,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-07 00:12:49,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-10-07 00:12:49,571 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 16 states. [2019-10-07 00:12:49,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:12:49,800 INFO L93 Difference]: Finished difference Result 23 states and 29 transitions. [2019-10-07 00:12:49,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-07 00:12:49,801 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 14 [2019-10-07 00:12:49,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:12:49,802 INFO L225 Difference]: With dead ends: 23 [2019-10-07 00:12:49,802 INFO L226 Difference]: Without dead ends: 0 [2019-10-07 00:12:49,804 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2019-10-07 00:12:49,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-07 00:12:49,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-07 00:12:49,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-07 00:12:49,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-07 00:12:49,807 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2019-10-07 00:12:49,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:12:49,807 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-07 00:12:49,808 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-07 00:12:49,808 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-07 00:12:49,808 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-07 00:12:50,014 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:12:50,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-07 00:12:50,214 INFO L439 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |old(#NULL.base)| |#NULL.base|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 00:12:50,214 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-07 00:12:50,215 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-07 00:12:50,215 INFO L439 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (and (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (<= |#NULL.offset| 0) (<= 0 |#NULL.offset|)) [2019-10-07 00:12:50,215 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-07 00:12:50,215 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-07 00:12:50,215 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 4 18) no Hoare annotation was computed. [2019-10-07 00:12:50,216 INFO L439 ceAbstractionStarter]: At program point L15(line 15) the Hoare annotation is: (or (not (<= |#NULL.offset| 0)) (not (<= 0 |#NULL.base|)) (not (= 0 (select |old(#valid)| 0))) (not (<= 0 |#NULL.offset|)) (not (<= |#NULL.base| 0))) [2019-10-07 00:12:50,216 INFO L443 ceAbstractionStarter]: For program point L15-1(line 15) no Hoare annotation was computed. [2019-10-07 00:12:50,216 INFO L439 ceAbstractionStarter]: At program point L7-3(lines 7 9) the Hoare annotation is: (or (not (<= |#NULL.offset| 0)) (= 0 (select |#valid| 0)) (not (<= 0 |#NULL.base|)) (not (= 0 (select |old(#valid)| 0))) (not (<= 0 |#NULL.offset|)) (not (<= |#NULL.base| 0))) [2019-10-07 00:12:50,217 INFO L439 ceAbstractionStarter]: At program point mainENTRY(lines 4 18) the Hoare annotation is: (or (not (<= |#NULL.offset| 0)) (not (<= 0 |#NULL.base|)) (and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |old(#length)| |#length|)) (not (= 0 (select |old(#valid)| 0))) (not (<= 0 |#NULL.offset|)) (not (<= |#NULL.base| 0))) [2019-10-07 00:12:50,217 INFO L439 ceAbstractionStarter]: At program point L14-3(lines 14 16) the Hoare annotation is: (or (not (<= |#NULL.offset| 0)) (not (<= 0 |#NULL.base|)) (not (= 0 (select |old(#valid)| 0))) (not (<= 0 |#NULL.offset|)) (not (<= |#NULL.base| 0))) [2019-10-07 00:12:50,218 INFO L439 ceAbstractionStarter]: At program point L10-3(lines 10 12) the Hoare annotation is: (or (not (<= |#NULL.offset| 0)) (not (<= 0 |#NULL.base|)) (not (= 0 (select |old(#valid)| 0))) (not (<= 0 |#NULL.offset|)) (not (<= |#NULL.base| 0)) (and (<= main_~i~0 1) (= 0 (select |#valid| 0)))) [2019-10-07 00:12:50,218 INFO L443 ceAbstractionStarter]: For program point L2-1(line 2) no Hoare annotation was computed. [2019-10-07 00:12:50,219 INFO L443 ceAbstractionStarter]: For program point L2-3(line 2) no Hoare annotation was computed. [2019-10-07 00:12:50,219 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2019-10-07 00:12:50,219 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2019-10-07 00:12:50,219 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2019-10-07 00:12:50,220 INFO L443 ceAbstractionStarter]: For program point L2(line 2) no Hoare annotation was computed. [2019-10-07 00:12:50,240 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-07 00:12:50,241 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-07 00:12:50,242 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-07 00:12:50,242 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-07 00:12:50,249 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-07 00:12:50,250 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-07 00:12:50,250 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-07 00:12:50,250 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-07 00:12:50,252 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-07 00:12:50,253 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-07 00:12:50,253 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-07 00:12:50,253 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-07 00:12:50,255 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-07 00:12:50,256 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-07 00:12:50,256 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-07 00:12:50,257 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-07 00:12:50,259 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-07 00:12:50,259 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-07 00:12:50,259 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-07 00:12:50,260 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-07 00:12:50,261 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-07 00:12:50,261 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-07 00:12:50,261 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-07 00:12:50,261 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-07 00:12:50,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 12:12:50 BoogieIcfgContainer [2019-10-07 00:12:50,269 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-07 00:12:50,278 INFO L168 Benchmark]: Toolchain (without parser) took 3278.00 ms. Allocated memory was 137.9 MB in the beginning and 233.8 MB in the end (delta: 95.9 MB). Free memory was 103.3 MB in the beginning and 101.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 97.5 MB. Max. memory is 7.1 GB. [2019-10-07 00:12:50,279 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 137.9 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-10-07 00:12:50,280 INFO L168 Benchmark]: CACSL2BoogieTranslator took 263.59 ms. Allocated memory is still 137.9 MB. Free memory was 102.9 MB in the beginning and 92.7 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2019-10-07 00:12:50,281 INFO L168 Benchmark]: Boogie Preprocessor took 115.31 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 92.7 MB in the beginning and 180.1 MB in the end (delta: -87.4 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2019-10-07 00:12:50,282 INFO L168 Benchmark]: RCFGBuilder took 430.13 ms. Allocated memory is still 201.9 MB. Free memory was 180.1 MB in the beginning and 161.4 MB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. [2019-10-07 00:12:50,286 INFO L168 Benchmark]: TraceAbstraction took 2458.45 ms. Allocated memory was 201.9 MB in the beginning and 233.8 MB in the end (delta: 32.0 MB). Free memory was 161.4 MB in the beginning and 101.8 MB in the end (delta: 59.6 MB). Peak memory consumption was 91.6 MB. Max. memory is 7.1 GB. [2019-10-07 00:12:50,299 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 137.9 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 263.59 ms. Allocated memory is still 137.9 MB. Free memory was 102.9 MB in the beginning and 92.7 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.31 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 92.7 MB in the beginning and 180.1 MB in the end (delta: -87.4 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 430.13 ms. Allocated memory is still 201.9 MB. Free memory was 180.1 MB in the beginning and 161.4 MB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2458.45 ms. Allocated memory was 201.9 MB in the beginning and 233.8 MB in the end (delta: 32.0 MB). Free memory was 161.4 MB in the beginning and 101.8 MB in the end (delta: 59.6 MB). Peak memory consumption was 91.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2]: 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: 14]: Loop Invariant [2019-10-07 00:12:50,321 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-07 00:12:50,321 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-07 00:12:50,322 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-07 00:12:50,322 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-07 00:12:50,324 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-07 00:12:50,325 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-07 00:12:50,326 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-07 00:12:50,326 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL Derived loop invariant: (((!(#NULL <= 0) || !(0 <= #NULL)) || !(0 == \old(\valid)[0])) || !(0 <= #NULL)) || !(#NULL <= 0) - InvariantResult [Line: 10]: Loop Invariant [2019-10-07 00:12:50,331 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-07 00:12:50,331 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-07 00:12:50,332 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-07 00:12:50,332 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-07 00:12:50,334 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-07 00:12:50,334 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-07 00:12:50,334 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-07 00:12:50,339 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL Derived loop invariant: ((((!(#NULL <= 0) || !(0 <= #NULL)) || !(0 == \old(\valid)[0])) || !(0 <= #NULL)) || !(#NULL <= 0)) || (i <= 1 && 0 == \valid[0]) - InvariantResult [Line: 7]: Loop Invariant [2019-10-07 00:12:50,340 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-07 00:12:50,341 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-07 00:12:50,341 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-07 00:12:50,343 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-07 00:12:50,344 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-07 00:12:50,344 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-07 00:12:50,345 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-07 00:12:50,345 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL Derived loop invariant: ((((!(#NULL <= 0) || 0 == \valid[0]) || !(0 <= #NULL)) || !(0 == \old(\valid)[0])) || !(0 <= #NULL)) || !(#NULL <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. Result: SAFE, OverallTime: 2.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 23 SDtfs, 2 SDslu, 34 SDs, 0 SdLazy, 40 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 10 PreInvPairs, 16 NumberOfFragments, 169 HoareAnnotationTreeSize, 10 FomulaSimplifications, 85 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 69 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 806 SizeOfPredicates, 0 NumberOfNonLiveVariables, 66 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 3/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: OVERALL_TIME[ms]: 751, ICFG_INTERPRETER_ENTERED_PROCEDURES: 4, DAG_INTERPRETER_EARLY_EXIT_QUERIES: 27, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 15, TOOLS_POST_TIME[ms]: 243, TOOLS_POST_CALL_APPLICATIONS: 5, TOOLS_POST_CALL_TIME[ms]: 19, TOOLS_POST_RETURN_APPLICATIONS: 2, TOOLS_POST_RETURN_TIME[ms]: 2, TOOLS_QUANTIFIERELIM_APPLICATIONS: 22, TOOLS_QUANTIFIERELIM_TIME[ms]: 250, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 71, FLUID_QUERY_TIME[ms]: 4, FLUID_QUERIES: 33, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 24, DOMAIN_JOIN_TIME[ms]: 284, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 4, DOMAIN_WIDEN_TIME[ms]: 81, DOMAIN_ISSUBSETEQ_APPLICATIONS: 6, DOMAIN_ISSUBSETEQ_TIME[ms]: 18, DOMAIN_ISBOTTOM_APPLICATIONS: 1, DOMAIN_ISBOTTOM_TIME[ms]: 2, LOOP_SUMMARIZER_APPLICATIONS: 2, LOOP_SUMMARIZER_CACHE_MISSES: 2, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 340, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 339, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 6, CALL_SUMMARIZER_APPLICATIONS: 2, CALL_SUMMARIZER_CACHE_MISSES: 1, CALL_SUMMARIZER_OVERALL_TIME[ms]: 69, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 69, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 5, PATH_EXPR_TIME[ms]: 4, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 15, DAG_COMPRESSION_PROCESSED_NODES: 77, DAG_COMPRESSION_RETAINED_NODES: 47, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...