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/loops/sum01-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 13:46:27,030 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 13:46:27,033 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 13:46:27,050 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 13:46:27,051 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 13:46:27,053 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 13:46:27,054 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 13:46:27,063 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 13:46:27,068 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 13:46:27,071 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 13:46:27,072 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 13:46:27,073 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 13:46:27,073 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 13:46:27,075 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 13:46:27,077 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 13:46:27,078 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 13:46:27,079 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 13:46:27,081 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 13:46:27,082 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 13:46:27,085 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 13:46:27,090 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 13:46:27,093 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 13:46:27,095 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 13:46:27,096 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 13:46:27,098 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 13:46:27,098 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 13:46:27,098 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 13:46:27,100 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 13:46:27,101 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 13:46:27,103 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 13:46:27,103 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 13:46:27,104 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 13:46:27,104 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 13:46:27,105 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 13:46:27,106 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 13:46:27,106 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 13:46:27,107 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 13:46:27,107 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 13:46:27,107 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 13:46:27,108 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 13:46:27,109 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 13:46:27,110 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 13:46:27,126 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 13:46:27,126 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 13:46:27,127 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 13:46:27,127 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 13:46:27,128 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 13:46:27,128 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 13:46:27,128 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 13:46:27,128 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 13:46:27,128 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 13:46:27,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 13:46:27,129 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 13:46:27,129 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 13:46:27,129 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 13:46:27,129 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 13:46:27,129 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 13:46:27,130 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 13:46:27,130 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 13:46:27,130 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 13:46:27,130 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 13:46:27,130 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 13:46:27,131 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 13:46:27,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 13:46:27,131 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 13:46:27,131 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 13:46:27,131 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 13:46:27,132 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 13:46:27,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 13:46:27,132 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 13:46:27,132 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 13:46:27,407 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 13:46:27,421 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 13:46:27,424 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 13:46:27,425 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 13:46:27,426 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 13:46:27,427 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum01-1.i [2019-10-07 13:46:27,506 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f8d6c5b5/fe2fc82531f34d0e8629b77000890826/FLAG5d89cc694 [2019-10-07 13:46:27,948 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 13:46:27,949 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum01-1.i [2019-10-07 13:46:27,955 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f8d6c5b5/fe2fc82531f34d0e8629b77000890826/FLAG5d89cc694 [2019-10-07 13:46:28,352 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f8d6c5b5/fe2fc82531f34d0e8629b77000890826 [2019-10-07 13:46:28,362 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 13:46:28,363 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 13:46:28,364 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 13:46:28,365 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 13:46:28,368 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 13:46:28,369 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:46:28" (1/1) ... [2019-10-07 13:46:28,372 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b2e6592 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:46:28, skipping insertion in model container [2019-10-07 13:46:28,372 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:46:28" (1/1) ... [2019-10-07 13:46:28,380 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 13:46:28,398 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 13:46:28,557 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:46:28,567 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 13:46:28,584 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:46:28,597 INFO L192 MainTranslator]: Completed translation [2019-10-07 13:46:28,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:46:28 WrapperNode [2019-10-07 13:46:28,597 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 13:46:28,598 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 13:46:28,598 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 13:46:28,598 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 13:46:28,685 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:46:28" (1/1) ... [2019-10-07 13:46:28,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:46:28" (1/1) ... [2019-10-07 13:46:28,691 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:46:28" (1/1) ... [2019-10-07 13:46:28,694 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:46:28" (1/1) ... [2019-10-07 13:46:28,699 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:46:28" (1/1) ... [2019-10-07 13:46:28,703 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:46:28" (1/1) ... [2019-10-07 13:46:28,703 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:46:28" (1/1) ... [2019-10-07 13:46:28,705 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 13:46:28,705 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 13:46:28,706 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 13:46:28,706 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 13:46:28,706 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:46:28" (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 13:46:28,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 13:46:28,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 13:46:28,764 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-07 13:46:28,764 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 13:46:28,764 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 13:46:28,765 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-07 13:46:28,765 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-10-07 13:46:28,765 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 13:46:28,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 13:46:28,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 13:46:28,999 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 13:46:29,000 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 13:46:29,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:46:29 BoogieIcfgContainer [2019-10-07 13:46:29,001 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 13:46:29,003 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 13:46:29,003 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 13:46:29,006 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 13:46:29,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 01:46:28" (1/3) ... [2019-10-07 13:46:29,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61d73a40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:46:29, skipping insertion in model container [2019-10-07 13:46:29,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:46:28" (2/3) ... [2019-10-07 13:46:29,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61d73a40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:46:29, skipping insertion in model container [2019-10-07 13:46:29,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:46:29" (3/3) ... [2019-10-07 13:46:29,010 INFO L109 eAbstractionObserver]: Analyzing ICFG sum01-1.i [2019-10-07 13:46:29,026 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 13:46:29,035 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 13:46:29,048 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 13:46:29,098 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 13:46:29,103 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 13:46:29,103 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 13:46:29,104 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 13:46:29,104 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 13:46:29,104 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 13:46:29,104 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 13:46:29,104 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 13:46:29,125 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2019-10-07 13:46:29,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-07 13:46:29,131 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:46:29,132 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:46:29,134 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:46:29,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:46:29,140 INFO L82 PathProgramCache]: Analyzing trace with hash -699336870, now seen corresponding path program 1 times [2019-10-07 13:46:29,149 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:46:29,150 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:46:29,150 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:46:29,150 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:46:29,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:46:29,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:46:29,357 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 13:46:29,358 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:46:29,359 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:46:29,359 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 13:46:29,363 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 13:46:29,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 13:46:29,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 13:46:29,381 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 5 states. [2019-10-07 13:46:29,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:46:29,485 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2019-10-07 13:46:29,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 13:46:29,490 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-10-07 13:46:29,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:46:29,507 INFO L225 Difference]: With dead ends: 33 [2019-10-07 13:46:29,507 INFO L226 Difference]: Without dead ends: 12 [2019-10-07 13:46:29,512 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-07 13:46:29,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-10-07 13:46:29,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-10-07 13:46:29,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-10-07 13:46:29,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-10-07 13:46:29,560 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2019-10-07 13:46:29,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:46:29,561 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-10-07 13:46:29,561 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 13:46:29,561 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-10-07 13:46:29,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-07 13:46:29,562 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:46:29,563 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:46:29,563 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:46:29,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:46:29,564 INFO L82 PathProgramCache]: Analyzing trace with hash -228174086, now seen corresponding path program 1 times [2019-10-07 13:46:29,565 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:46:29,565 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:46:29,565 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:46:29,565 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:46:29,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:46:29,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:46:29,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:46:29,755 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:46:29,755 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:46:29,755 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 13:46:29,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:46:29,797 INFO L256 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 14 conjunts are in the unsatisfiable core [2019-10-07 13:46:29,803 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:46:29,913 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:46:29,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:46:29,951 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:46:30,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:46:30,152 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 13:46:30,203 INFO L162 IcfgInterpreter]: Started Sifa with 11 locations of interest [2019-10-07 13:46:30,203 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 13:46:30,218 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 13:46:30,228 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 13:46:30,229 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 13:46:30,317 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-10-07 13:46:30,475 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2019-10-07 13:46:30,542 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-10-07 13:46:30,547 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 13:46:30,548 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 13:46:30,548 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#true [2019-10-07 13:46:30,548 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#true [2019-10-07 13:46:30,548 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 102#true [2019-10-07 13:46:30,549 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 13:46:30,549 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initFINAL satisfy 97#true [2019-10-07 13:46:30,549 INFO L193 IcfgInterpreter]: Reachable states at location L5 satisfy 88#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) [2019-10-07 13:46:30,550 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 93#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) [2019-10-07 13:46:30,550 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 78#(and (or (and (<= 1 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1)) (and (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0))) (or (= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| 0))) [2019-10-07 13:46:30,550 INFO L193 IcfgInterpreter]: Reachable states at location L4 satisfy 83#(and (or (and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) (and (<= 1 __VERIFIER_assert_~cond) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1) (<= |__VERIFIER_assert_#in~cond| 1))) (or (and (= |__VERIFIER_assert_#in~cond| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)))) [2019-10-07 13:46:30,551 INFO L193 IcfgInterpreter]: Reachable states at location L13-4 satisfy 73#(not (<= main_~i~0 main_~n~0)) [2019-10-07 13:46:30,551 INFO L193 IcfgInterpreter]: Reachable states at location L13-3 satisfy 68#true [2019-10-07 13:46:30,724 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 13:46:30,725 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 5] total 19 [2019-10-07 13:46:30,727 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-10-07 13:46:30,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-10-07 13:46:30,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2019-10-07 13:46:30,729 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 19 states. [2019-10-07 13:46:31,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:46:31,100 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2019-10-07 13:46:31,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-07 13:46:31,101 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 11 [2019-10-07 13:46:31,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:46:31,103 INFO L225 Difference]: With dead ends: 22 [2019-10-07 13:46:31,103 INFO L226 Difference]: Without dead ends: 15 [2019-10-07 13:46:31,105 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=113, Invalid=537, Unknown=0, NotChecked=0, Total=650 [2019-10-07 13:46:31,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-10-07 13:46:31,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-10-07 13:46:31,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-10-07 13:46:31,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2019-10-07 13:46:31,114 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2019-10-07 13:46:31,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:46:31,114 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2019-10-07 13:46:31,115 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-10-07 13:46:31,115 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2019-10-07 13:46:31,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-07 13:46:31,115 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:46:31,116 INFO L385 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:46:31,329 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:46:31,329 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:46:31,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:46:31,330 INFO L82 PathProgramCache]: Analyzing trace with hash -528752806, now seen corresponding path program 2 times [2019-10-07 13:46:31,330 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:46:31,330 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:46:31,330 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:46:31,331 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:46:31,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:46:31,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:46:31,490 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:46:31,490 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:46:31,491 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:46:31,491 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:46:31,528 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-10-07 13:46:31,529 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-07 13:46:31,530 WARN L254 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 23 conjunts are in the unsatisfiable core [2019-10-07 13:46:31,532 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:46:31,707 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:46:31,708 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:46:32,066 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2019-10-07 13:46:32,310 WARN L191 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2019-10-07 13:46:32,668 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 75 [2019-10-07 13:46:32,692 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:46:32,693 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 13:46:32,695 INFO L162 IcfgInterpreter]: Started Sifa with 11 locations of interest [2019-10-07 13:46:32,695 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 13:46:32,697 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 13:46:32,697 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 13:46:32,698 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 13:46:32,715 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-10-07 13:46:32,767 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2019-10-07 13:46:32,797 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-10-07 13:46:32,800 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 13:46:32,800 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 13:46:32,800 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#true [2019-10-07 13:46:32,801 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#true [2019-10-07 13:46:32,801 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 102#true [2019-10-07 13:46:32,801 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 13:46:32,801 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initFINAL satisfy 97#true [2019-10-07 13:46:32,802 INFO L193 IcfgInterpreter]: Reachable states at location L5 satisfy 88#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) [2019-10-07 13:46:32,802 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 93#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) [2019-10-07 13:46:32,802 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 78#(and (or (and (<= 1 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1)) (and (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0))) (or (= |__VERIFIER_assert_#in~cond| 0) (= |__VERIFIER_assert_#in~cond| 1))) [2019-10-07 13:46:32,802 INFO L193 IcfgInterpreter]: Reachable states at location L4 satisfy 83#(and (or (and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) (and (<= 1 __VERIFIER_assert_~cond) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1) (<= |__VERIFIER_assert_#in~cond| 1))) (or (and (= |__VERIFIER_assert_#in~cond| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)))) [2019-10-07 13:46:32,803 INFO L193 IcfgInterpreter]: Reachable states at location L13-4 satisfy 73#(not (<= main_~i~0 main_~n~0)) [2019-10-07 13:46:32,803 INFO L193 IcfgInterpreter]: Reachable states at location L13-3 satisfy 68#true [2019-10-07 13:46:32,969 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 13:46:32,969 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 5] total 28 [2019-10-07 13:46:32,971 INFO L442 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-10-07 13:46:32,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-10-07 13:46:32,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=636, Unknown=0, NotChecked=0, Total=756 [2019-10-07 13:46:32,973 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 28 states. [2019-10-07 13:46:33,552 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 40 [2019-10-07 13:46:33,955 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 38 [2019-10-07 13:46:34,202 WARN L191 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 34 [2019-10-07 13:46:34,398 WARN L191 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 35 [2019-10-07 13:46:34,621 WARN L191 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 33 [2019-10-07 13:46:34,897 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 30 [2019-10-07 13:46:35,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:46:35,062 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2019-10-07 13:46:35,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-10-07 13:46:35,063 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 14 [2019-10-07 13:46:35,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:46:35,064 INFO L225 Difference]: With dead ends: 31 [2019-10-07 13:46:35,064 INFO L226 Difference]: Without dead ends: 21 [2019-10-07 13:46:35,065 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=304, Invalid=1502, Unknown=0, NotChecked=0, Total=1806 [2019-10-07 13:46:35,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-10-07 13:46:35,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-10-07 13:46:35,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-10-07 13:46:35,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2019-10-07 13:46:35,074 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 14 [2019-10-07 13:46:35,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:46:35,075 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2019-10-07 13:46:35,075 INFO L463 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-10-07 13:46:35,075 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2019-10-07 13:46:35,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-07 13:46:35,076 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:46:35,076 INFO L385 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:46:35,277 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:46:35,277 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:46:35,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:46:35,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1818934106, now seen corresponding path program 3 times [2019-10-07 13:46:35,278 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:46:35,279 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:46:35,279 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:46:35,279 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:46:35,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:46:35,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-07 13:46:35,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-07 13:46:35,366 INFO L161 tionRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-10-07 13:46:35,366 INFO L451 BasicCegarLoop]: Counterexample might be feasible [2019-10-07 13:46:35,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 01:46:35 BoogieIcfgContainer [2019-10-07 13:46:35,395 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-07 13:46:35,397 INFO L168 Benchmark]: Toolchain (without parser) took 7033.53 ms. Allocated memory was 145.2 MB in the beginning and 275.3 MB in the end (delta: 130.0 MB). Free memory was 101.8 MB in the beginning and 101.4 MB in the end (delta: 326.2 kB). Peak memory consumption was 130.3 MB. Max. memory is 7.1 GB. [2019-10-07 13:46:35,398 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 145.2 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 13:46:35,399 INFO L168 Benchmark]: CACSL2BoogieTranslator took 233.03 ms. Allocated memory is still 145.2 MB. Free memory was 101.6 MB in the beginning and 92.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2019-10-07 13:46:35,400 INFO L168 Benchmark]: Boogie Preprocessor took 107.28 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 92.2 MB in the beginning and 181.0 MB in the end (delta: -88.8 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2019-10-07 13:46:35,401 INFO L168 Benchmark]: RCFGBuilder took 296.14 ms. Allocated memory is still 202.4 MB. Free memory was 181.0 MB in the beginning and 167.8 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2019-10-07 13:46:35,402 INFO L168 Benchmark]: TraceAbstraction took 6392.36 ms. Allocated memory was 202.4 MB in the beginning and 275.3 MB in the end (delta: 72.9 MB). Free memory was 167.8 MB in the beginning and 101.4 MB in the end (delta: 66.4 MB). Peak memory consumption was 139.2 MB. Max. memory is 7.1 GB. [2019-10-07 13:46:35,406 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 145.2 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 233.03 ms. Allocated memory is still 145.2 MB. Free memory was 101.6 MB in the beginning and 92.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 107.28 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 92.2 MB in the beginning and 181.0 MB in the end (delta: -88.8 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 296.14 ms. Allocated memory is still 202.4 MB. Free memory was 181.0 MB in the beginning and 167.8 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6392.36 ms. Allocated memory was 202.4 MB in the beginning and 275.3 MB in the end (delta: 72.9 MB). Free memory was 167.8 MB in the beginning and 101.4 MB in the end (delta: 66.4 MB). Peak memory consumption was 139.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] int i, n=__VERIFIER_nondet_uint(), sn=0; [L12] int i, n=__VERIFIER_nondet_uint(), sn=0; [L13] i=1 VAL [i=1, n=0, n=10] [L13] COND TRUE i<=n [L14] COND TRUE i<10 [L15] sn = sn + (2) [L13] i++ VAL [i=2, n=10, n=2] [L13] COND TRUE i<=n [L14] COND TRUE i<10 [L15] sn = sn + (2) [L13] i++ VAL [i=3, n=10, n=4] [L13] COND TRUE i<=n [L14] COND TRUE i<10 [L15] sn = sn + (2) [L13] i++ VAL [i=4, n=10, n=6] [L13] COND TRUE i<=n [L14] COND TRUE i<10 [L15] sn = sn + (2) [L13] i++ VAL [i=5, n=8, n=10] [L13] COND TRUE i<=n [L14] COND TRUE i<10 [L15] sn = sn + (2) [L13] i++ VAL [i=6, n=10, n=10] [L13] COND TRUE i<=n [L14] COND TRUE i<10 [L15] sn = sn + (2) [L13] i++ VAL [i=7, n=12, n=10] [L13] COND TRUE i<=n [L14] COND TRUE i<10 [L15] sn = sn + (2) [L13] i++ VAL [i=8, n=14, n=10] [L13] COND TRUE i<=n [L14] COND TRUE i<10 [L15] sn = sn + (2) [L13] i++ VAL [i=9, n=16, n=10] [L13] COND TRUE i<=n [L14] COND TRUE i<10 [L15] sn = sn + (2) [L13] i++ VAL [i=10, n=18, n=10] [L13] COND TRUE i<=n [L14] COND FALSE !(i<10) [L13] i++ VAL [i=11, n=18, n=10] [L13] COND FALSE !(i<=n) VAL [i=11, n=18, n=10] [L17] CALL __VERIFIER_assert(sn==n*(2) || sn == 0) VAL [\old(cond)=0] [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L5] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. Result: UNSAFE, OverallTime: 6.2s, OverallIterations: 4, TraceHistogramMax: 10, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 28 SDtfs, 54 SDslu, 159 SDs, 0 SdLazy, 209 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 117 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 588 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=3, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 80 NumberOfCodeBlocks, 80 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 10727 SizeOfPredicates, 8 NumberOfNonLiveVariables, 72 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/33 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: OVERALL_TIME[ms]: 457, ICFG_INTERPRETER_ENTERED_PROCEDURES: 8, DAG_INTERPRETER_EARLY_EXIT_QUERIES: 42, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 20, TOOLS_POST_TIME[ms]: 103, TOOLS_POST_CALL_APPLICATIONS: 10, TOOLS_POST_CALL_TIME[ms]: 6, TOOLS_POST_RETURN_APPLICATIONS: 4, TOOLS_POST_RETURN_TIME[ms]: 1, TOOLS_QUANTIFIERELIM_APPLICATIONS: 34, TOOLS_QUANTIFIERELIM_TIME[ms]: 97, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 44, FLUID_QUERY_TIME[ms]: 4, FLUID_QUERIES: 48, FLUID_YES_ANSWERS: 2, DOMAIN_JOIN_APPLICATIONS: 36, DOMAIN_JOIN_TIME[ms]: 188, DOMAIN_ALPHA_APPLICATIONS: 2, DOMAIN_ALPHA_TIME[ms]: 4, DOMAIN_WIDEN_APPLICATIONS: 4, DOMAIN_WIDEN_TIME[ms]: 26, DOMAIN_ISSUBSETEQ_APPLICATIONS: 6, DOMAIN_ISSUBSETEQ_TIME[ms]: 18, DOMAIN_ISBOTTOM_APPLICATIONS: 2, DOMAIN_ISBOTTOM_TIME[ms]: 3, LOOP_SUMMARIZER_APPLICATIONS: 2, LOOP_SUMMARIZER_CACHE_MISSES: 2, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 161, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 161, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 6, CALL_SUMMARIZER_APPLICATIONS: 4, CALL_SUMMARIZER_CACHE_MISSES: 2, CALL_SUMMARIZER_OVERALL_TIME[ms]: 11, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 11, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 6, PATH_EXPR_TIME[ms]: 4, REGEX_TO_DAG_TIME[ms]: 4, DAG_COMPRESSION_TIME[ms]: 25, DAG_COMPRESSION_PROCESSED_NODES: 114, DAG_COMPRESSION_RETAINED_NODES: 82, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...