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_copyInitSum3_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-06 23:45:02,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-06 23:45:02,670 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-06 23:45:02,688 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-06 23:45:02,688 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-06 23:45:02,690 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-06 23:45:02,692 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-06 23:45:02,702 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-06 23:45:02,706 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-06 23:45:02,708 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-06 23:45:02,710 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-06 23:45:02,711 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-06 23:45:02,711 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-06 23:45:02,713 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-06 23:45:02,715 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-06 23:45:02,717 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-06 23:45:02,718 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-06 23:45:02,720 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-06 23:45:02,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-06 23:45:02,724 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-06 23:45:02,726 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-06 23:45:02,729 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-06 23:45:02,732 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-06 23:45:02,733 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-06 23:45:02,735 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-06 23:45:02,748 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-06 23:45:02,749 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-06 23:45:02,750 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-06 23:45:02,751 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 [2019-10-06 23:45:02,780 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-06 23:45:02,780 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-06 23:45:02,781 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-06 23:45:02,782 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-06 23:45:02,782 INFO L138 SettingsManager]: * Use SBE=true [2019-10-06 23:45:02,782 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-06 23:45:02,782 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-06 23:45:02,782 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-06 23:45:02,783 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-06 23:45:02,783 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-06 23:45:02,783 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-06 23:45:02,783 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-06 23:45:02,783 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-06 23:45:02,783 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-06 23:45:02,784 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-06 23:45:02,784 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-06 23:45:02,784 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-06 23:45:02,784 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-06 23:45:02,784 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-06 23:45:02,785 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-06 23:45:02,785 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-06 23:45:02,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-06 23:45:02,785 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-06 23:45:02,785 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-06 23:45:02,786 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-06 23:45:02,786 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-06 23:45:02,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-06 23:45:02,786 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-06 23:45:02,786 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 [2019-10-06 23:45:03,049 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-06 23:45:03,065 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-06 23:45:03,069 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-06 23:45:03,071 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-06 23:45:03,071 INFO L275 PluginConnector]: CDTParser initialized [2019-10-06 23:45:03,072 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copyInitSum3_ground.i [2019-10-06 23:45:03,146 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38dcb4fac/26b329d2c0e74909a1297848ab3f6410/FLAG074fd28b1 [2019-10-06 23:45:03,651 INFO L306 CDTParser]: Found 1 translation units. [2019-10-06 23:45:03,652 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copyInitSum3_ground.i [2019-10-06 23:45:03,658 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38dcb4fac/26b329d2c0e74909a1297848ab3f6410/FLAG074fd28b1 [2019-10-06 23:45:04,082 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38dcb4fac/26b329d2c0e74909a1297848ab3f6410 [2019-10-06 23:45:04,092 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-06 23:45:04,094 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-06 23:45:04,095 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-06 23:45:04,095 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-06 23:45:04,099 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-06 23:45:04,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 11:45:04" (1/1) ... [2019-10-06 23:45:04,102 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@154386d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 11:45:04, skipping insertion in model container [2019-10-06 23:45:04,102 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 11:45:04" (1/1) ... [2019-10-06 23:45:04,110 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-06 23:45:04,126 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-06 23:45:04,335 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-06 23:45:04,339 INFO L188 MainTranslator]: Completed pre-run [2019-10-06 23:45:04,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-06 23:45:04,379 INFO L192 MainTranslator]: Completed translation [2019-10-06 23:45:04,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 11:45:04 WrapperNode [2019-10-06 23:45:04,379 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-06 23:45:04,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-06 23:45:04,380 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-06 23:45:04,380 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-06 23:45:04,473 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 11:45:04" (1/1) ... [2019-10-06 23:45:04,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 11:45:04" (1/1) ... [2019-10-06 23:45:04,481 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 11:45:04" (1/1) ... [2019-10-06 23:45:04,481 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 11:45:04" (1/1) ... [2019-10-06 23:45:04,493 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 11:45:04" (1/1) ... [2019-10-06 23:45:04,499 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 11:45:04" (1/1) ... [2019-10-06 23:45:04,501 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 11:45:04" (1/1) ... [2019-10-06 23:45:04,503 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-06 23:45:04,504 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-06 23:45:04,504 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-06 23:45:04,504 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-06 23:45:04,505 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 11:45:04" (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 [2019-10-06 23:45:04,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-06 23:45:04,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-06 23:45:04,554 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-06 23:45:04,554 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-06 23:45:04,554 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-06 23:45:04,554 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-06 23:45:04,556 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-06 23:45:04,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-06 23:45:04,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-06 23:45:04,557 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-06 23:45:04,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-06 23:45:04,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-06 23:45:04,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-06 23:45:04,941 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-06 23:45:04,941 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-06 23:45:04,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 11:45:04 BoogieIcfgContainer [2019-10-06 23:45:04,943 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-06 23:45:04,944 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-06 23:45:04,944 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-06 23:45:04,947 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-06 23:45:04,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 11:45:04" (1/3) ... [2019-10-06 23:45:04,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a9b0958 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 11:45:04, skipping insertion in model container [2019-10-06 23:45:04,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 11:45:04" (2/3) ... [2019-10-06 23:45:04,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a9b0958 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 11:45:04, skipping insertion in model container [2019-10-06 23:45:04,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 11:45:04" (3/3) ... [2019-10-06 23:45:04,951 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_copyInitSum3_ground.i [2019-10-06 23:45:04,961 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-06 23:45:04,971 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-06 23:45:04,980 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-06 23:45:05,001 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-06 23:45:05,001 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-06 23:45:05,001 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-06 23:45:05,001 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-06 23:45:05,001 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-06 23:45:05,001 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-06 23:45:05,001 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-06 23:45:05,002 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-06 23:45:05,016 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-10-06 23:45:05,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-06 23:45:05,020 INFO L377 BasicCegarLoop]: Found error trace [2019-10-06 23:45:05,021 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-06 23:45:05,023 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-06 23:45:05,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-06 23:45:05,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1088212985, now seen corresponding path program 1 times [2019-10-06 23:45:05,035 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-06 23:45:05,035 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-06 23:45:05,036 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-06 23:45:05,036 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-06 23:45:05,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-06 23:45:05,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-06 23:45:05,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-06 23:45:05,185 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-06 23:45:05,186 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-06 23:45:05,186 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-06 23:45:05,190 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-06 23:45:05,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-06 23:45:05,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-06 23:45:05,208 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 3 states. [2019-10-06 23:45:05,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-06 23:45:05,306 INFO L93 Difference]: Finished difference Result 40 states and 54 transitions. [2019-10-06 23:45:05,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-06 23:45:05,309 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2019-10-06 23:45:05,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-06 23:45:05,318 INFO L225 Difference]: With dead ends: 40 [2019-10-06 23:45:05,318 INFO L226 Difference]: Without dead ends: 22 [2019-10-06 23:45:05,322 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 [2019-10-06 23:45:05,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-10-06 23:45:05,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-10-06 23:45:05,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-10-06 23:45:05,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2019-10-06 23:45:05,357 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 14 [2019-10-06 23:45:05,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-06 23:45:05,358 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2019-10-06 23:45:05,358 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-06 23:45:05,358 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2019-10-06 23:45:05,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-06 23:45:05,360 INFO L377 BasicCegarLoop]: Found error trace [2019-10-06 23:45:05,360 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-06 23:45:05,360 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-06 23:45:05,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-06 23:45:05,361 INFO L82 PathProgramCache]: Analyzing trace with hash -280255419, now seen corresponding path program 1 times [2019-10-06 23:45:05,361 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-06 23:45:05,361 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-06 23:45:05,362 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-06 23:45:05,362 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-06 23:45:05,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-06 23:45:05,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-06 23:45:05,438 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-06 23:45:05,438 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-06 23:45:05,441 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-06 23:45:05,441 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 [2019-10-06 23:45:05,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-06 23:45:05,513 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-06 23:45:05,520 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-06 23:45:05,558 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-06 23:45:05,559 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-06 23:45:05,604 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-06 23:45:05,605 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-06 23:45:05,640 INFO L162 IcfgInterpreter]: Started Sifa with 15 locations of interest [2019-10-06 23:45:05,640 INFO L169 IcfgInterpreter]: Building call graph [2019-10-06 23:45:05,666 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-06 23:45:05,674 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-06 23:45:05,675 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-06 23:45:05,846 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-06 23:45:07,059 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 21 for LOIs [2019-10-06 23:45:07,080 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-06 23:45:07,089 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-06 23:45:07,089 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-06 23:45:07,090 INFO L193 IcfgInterpreter]: Reachable states at location L14-3 satisfy 147#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |main_~#b~0.offset| 0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 |main_~#b~0.offset|) (= |main_~#b~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-06 23:45:07,090 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 202#(and (exists ((|v_main_~#b~0.base_BEFORE_CALL_1| Int) (v_prenex_2 Int) (|v_main_~#b~0.offset_BEFORE_CALL_1| Int) (v_prenex_1 Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#b~0.base_BEFORE_CALL_1|) |v_main_~#b~0.offset_BEFORE_CALL_1|) 0)) (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| v_prenex_1) v_prenex_2) 0))))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-06 23:45:07,090 INFO L193 IcfgInterpreter]: Reachable states at location L22 satisfy 192#(and (< main_~x~0 100000) (= main_~x~0 0) (= |main_#t~mem8| (select (select |#memory_int| |main_~#b~0.base|) (+ (* 4 main_~x~0) |main_~#b~0.offset|))) (<= 100000 main_~i~0) (not (< main_~i~0 100000)) (<= main_~x~0 0) (<= 0 main_~x~0)) [2019-10-06 23:45:07,091 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 207#(and (<= __VERIFIER_assert_~cond 0) (exists ((|v_main_~#b~0.base_BEFORE_CALL_1| Int) (v_prenex_2 Int) (|v_main_~#b~0.offset_BEFORE_CALL_1| Int) (v_prenex_1 Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#b~0.base_BEFORE_CALL_1|) |v_main_~#b~0.offset_BEFORE_CALL_1|) 0)) (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| v_prenex_1) v_prenex_2) 0))))) (<= 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)) [2019-10-06 23:45:07,091 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 216#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-06 23:45:07,092 INFO L193 IcfgInterpreter]: Reachable states at location L17-3 satisfy 182#true [2019-10-06 23:45:07,092 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 212#(and (<= __VERIFIER_assert_~cond 0) (exists ((|v_main_~#b~0.base_BEFORE_CALL_1| Int) (v_prenex_2 Int) (|v_main_~#b~0.offset_BEFORE_CALL_1| Int) (v_prenex_1 Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#b~0.base_BEFORE_CALL_1|) |v_main_~#b~0.offset_BEFORE_CALL_1|) 0)) (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| v_prenex_1) v_prenex_2) 0))))) (<= 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)) [2019-10-06 23:45:07,093 INFO L193 IcfgInterpreter]: Reachable states at location L7-2 satisfy 71#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |main_~#b~0.offset| 0) (= |main_~#b~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (= (store (store |old(#length)| |main_~#a~0.base| 400000) |main_~#b~0.base| 400000) |#length|) (<= 0 main_~i~0) (= 0 |#NULL.base|) (<= |main_~#b~0.offset| 0) (= |#valid| (store (store |old(#valid)| |main_~#a~0.base| 1) |main_~#b~0.base| 1)) (not (= |main_~#b~0.base| 0)) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (= |main_~#b~0.offset| 0) (= |main_~#a~0.offset| 0) (< |main_~#b~0.base| |#StackHeapBarrier|) (<= main_~i~0 0) (= 0 (select |old(#valid)| 0)) (= (select (store |old(#valid)| |main_~#a~0.base| 1) |main_~#b~0.base|) 0) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= |#NULL.base| 0) (<= 0 |main_~#b~0.offset|) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-06 23:45:07,093 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)) [2019-10-06 23:45:07,093 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)) [2019-10-06 23:45:07,093 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 221#(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)) [2019-10-06 23:45:07,095 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-06 23:45:07,096 INFO L193 IcfgInterpreter]: Reachable states at location L21-3 satisfy 187#(and (= main_~x~0 0) (<= 100000 main_~i~0) (not (< main_~i~0 100000)) (<= main_~x~0 0) (<= 0 main_~x~0)) [2019-10-06 23:45:07,097 INFO L193 IcfgInterpreter]: Reachable states at location L11-3 satisfy 109#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |main_~#b~0.offset| 0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 |main_~#b~0.offset|) (= |main_~#b~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-06 23:45:07,098 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 197#(exists ((|v_main_~#b~0.base_BEFORE_CALL_1| Int) (v_prenex_2 Int) (|v_main_~#b~0.offset_BEFORE_CALL_1| Int) (v_prenex_1 Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#b~0.base_BEFORE_CALL_1|) |v_main_~#b~0.offset_BEFORE_CALL_1|) 0)) (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| v_prenex_1) v_prenex_2) 0))))) [2019-10-06 23:45:07,528 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-06 23:45:07,528 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 11] total 16 [2019-10-06 23:45:07,532 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-06 23:45:07,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-06 23:45:07,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2019-10-06 23:45:07,536 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 16 states. [2019-10-06 23:45:08,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-06 23:45:08,486 INFO L93 Difference]: Finished difference Result 58 states and 77 transitions. [2019-10-06 23:45:08,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-06 23:45:08,487 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 18 [2019-10-06 23:45:08,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-06 23:45:08,489 INFO L225 Difference]: With dead ends: 58 [2019-10-06 23:45:08,489 INFO L226 Difference]: Without dead ends: 43 [2019-10-06 23:45:08,490 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 44 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=136, Invalid=620, Unknown=0, NotChecked=0, Total=756 [2019-10-06 23:45:08,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-10-06 23:45:08,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 34. [2019-10-06 23:45:08,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-10-06 23:45:08,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2019-10-06 23:45:08,500 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 18 [2019-10-06 23:45:08,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-06 23:45:08,501 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2019-10-06 23:45:08,501 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-06 23:45:08,501 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2019-10-06 23:45:08,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-06 23:45:08,502 INFO L377 BasicCegarLoop]: Found error trace [2019-10-06 23:45:08,503 INFO L385 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-06 23:45:08,712 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-06 23:45:08,713 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-06 23:45:08,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-06 23:45:08,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1663969159, now seen corresponding path program 2 times [2019-10-06 23:45:08,714 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-06 23:45:08,714 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-06 23:45:08,714 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-06 23:45:08,715 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-06 23:45:08,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-06 23:45:08,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-06 23:45:08,893 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-06 23:45:08,894 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-06 23:45:08,894 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-06 23:45:08,894 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 [2019-10-06 23:45:08,979 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-10-06 23:45:08,979 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-06 23:45:08,981 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-06 23:45:08,985 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-06 23:45:09,001 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-06 23:45:09,001 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-06 23:45:09,060 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-06 23:45:09,060 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-06 23:45:09,062 INFO L162 IcfgInterpreter]: Started Sifa with 15 locations of interest [2019-10-06 23:45:09,062 INFO L169 IcfgInterpreter]: Building call graph [2019-10-06 23:45:09,063 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-06 23:45:09,063 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-06 23:45:09,063 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-06 23:45:09,105 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-06 23:45:10,019 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 21 for LOIs [2019-10-06 23:45:10,029 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-06 23:45:10,044 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-06 23:45:10,044 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-06 23:45:10,045 INFO L193 IcfgInterpreter]: Reachable states at location L14-3 satisfy 147#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |main_~#b~0.offset| 0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 |main_~#b~0.offset|) (= |main_~#b~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-06 23:45:10,045 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 202#(and (exists ((v_prenex_4 Int) (|v_main_~#b~0.base_BEFORE_CALL_2| Int) (v_prenex_3 Int) (|v_main_~#b~0.offset_BEFORE_CALL_2| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#b~0.base_BEFORE_CALL_2|) |v_main_~#b~0.offset_BEFORE_CALL_2|) 0))) (and (= (select (select |#memory_int| v_prenex_3) v_prenex_4) 0) (= |__VERIFIER_assert_#in~cond| 1)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-06 23:45:10,045 INFO L193 IcfgInterpreter]: Reachable states at location L22 satisfy 192#(and (< main_~x~0 100000) (= main_~x~0 0) (= |main_#t~mem8| (select (select |#memory_int| |main_~#b~0.base|) (+ (* 4 main_~x~0) |main_~#b~0.offset|))) (<= 100000 main_~i~0) (not (< main_~i~0 100000)) (<= main_~x~0 0) (<= 0 main_~x~0)) [2019-10-06 23:45:10,045 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 207#(and (<= __VERIFIER_assert_~cond 0) (exists ((v_prenex_4 Int) (|v_main_~#b~0.base_BEFORE_CALL_2| Int) (v_prenex_3 Int) (|v_main_~#b~0.offset_BEFORE_CALL_2| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#b~0.base_BEFORE_CALL_2|) |v_main_~#b~0.offset_BEFORE_CALL_2|) 0))) (and (= (select (select |#memory_int| v_prenex_3) v_prenex_4) 0) (= |__VERIFIER_assert_#in~cond| 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)) [2019-10-06 23:45:10,046 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 216#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-06 23:45:10,046 INFO L193 IcfgInterpreter]: Reachable states at location L17-3 satisfy 182#true [2019-10-06 23:45:10,046 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 212#(and (<= __VERIFIER_assert_~cond 0) (exists ((v_prenex_4 Int) (|v_main_~#b~0.base_BEFORE_CALL_2| Int) (v_prenex_3 Int) (|v_main_~#b~0.offset_BEFORE_CALL_2| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#b~0.base_BEFORE_CALL_2|) |v_main_~#b~0.offset_BEFORE_CALL_2|) 0))) (and (= (select (select |#memory_int| v_prenex_3) v_prenex_4) 0) (= |__VERIFIER_assert_#in~cond| 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)) [2019-10-06 23:45:10,046 INFO L193 IcfgInterpreter]: Reachable states at location L7-2 satisfy 71#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |main_~#b~0.offset| 0) (= |main_~#b~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (= (store (store |old(#length)| |main_~#a~0.base| 400000) |main_~#b~0.base| 400000) |#length|) (<= 0 main_~i~0) (= 0 |#NULL.base|) (<= |main_~#b~0.offset| 0) (= |#valid| (store (store |old(#valid)| |main_~#a~0.base| 1) |main_~#b~0.base| 1)) (not (= |main_~#b~0.base| 0)) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (= |main_~#b~0.offset| 0) (= |main_~#a~0.offset| 0) (< |main_~#b~0.base| |#StackHeapBarrier|) (<= main_~i~0 0) (= 0 (select |old(#valid)| 0)) (= (select (store |old(#valid)| |main_~#a~0.base| 1) |main_~#b~0.base|) 0) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= |#NULL.base| 0) (<= 0 |main_~#b~0.offset|) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-06 23:45:10,047 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)) [2019-10-06 23:45:10,047 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)) [2019-10-06 23:45:10,047 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 221#(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)) [2019-10-06 23:45:10,048 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-06 23:45:10,048 INFO L193 IcfgInterpreter]: Reachable states at location L21-3 satisfy 187#(and (= main_~x~0 0) (<= 100000 main_~i~0) (not (< main_~i~0 100000)) (<= main_~x~0 0) (<= 0 main_~x~0)) [2019-10-06 23:45:10,049 INFO L193 IcfgInterpreter]: Reachable states at location L11-3 satisfy 109#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |main_~#b~0.offset| 0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 |main_~#b~0.offset|) (= |main_~#b~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-06 23:45:10,049 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 197#(exists ((v_prenex_4 Int) (|v_main_~#b~0.base_BEFORE_CALL_2| Int) (v_prenex_3 Int) (|v_main_~#b~0.offset_BEFORE_CALL_2| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#b~0.base_BEFORE_CALL_2|) |v_main_~#b~0.offset_BEFORE_CALL_2|) 0))) (and (= (select (select |#memory_int| v_prenex_3) v_prenex_4) 0) (= |__VERIFIER_assert_#in~cond| 1)))) [2019-10-06 23:45:10,557 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-06 23:45:10,557 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 11] total 23 [2019-10-06 23:45:10,558 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-10-06 23:45:10,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-10-06 23:45:10,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506 [2019-10-06 23:45:10,559 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 23 states. [2019-10-06 23:45:11,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-06 23:45:11,762 INFO L93 Difference]: Finished difference Result 91 states and 122 transitions. [2019-10-06 23:45:11,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-06 23:45:11,763 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 30 [2019-10-06 23:45:11,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-06 23:45:11,765 INFO L225 Difference]: With dead ends: 91 [2019-10-06 23:45:11,765 INFO L226 Difference]: Without dead ends: 67 [2019-10-06 23:45:11,771 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 77 SyntacticMatches, 10 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=310, Invalid=1250, Unknown=0, NotChecked=0, Total=1560 [2019-10-06 23:45:11,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2019-10-06 23:45:11,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 58. [2019-10-06 23:45:11,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-10-06 23:45:11,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2019-10-06 23:45:11,795 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 30 [2019-10-06 23:45:11,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-06 23:45:11,796 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2019-10-06 23:45:11,796 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-10-06 23:45:11,796 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2019-10-06 23:45:11,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-10-06 23:45:11,802 INFO L377 BasicCegarLoop]: Found error trace [2019-10-06 23:45:11,802 INFO L385 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-06 23:45:12,009 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-06 23:45:12,010 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-06 23:45:12,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-06 23:45:12,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1209641671, now seen corresponding path program 3 times [2019-10-06 23:45:12,011 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-06 23:45:12,012 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-06 23:45:12,012 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-06 23:45:12,012 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-06 23:45:12,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-06 23:45:12,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-06 23:45:12,202 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2019-10-06 23:45:12,202 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-06 23:45:12,202 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-06 23:45:12,203 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-06 23:45:12,312 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-06 23:45:12,312 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-06 23:45:12,314 INFO L256 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-06 23:45:12,319 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-06 23:45:12,335 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2019-10-06 23:45:12,335 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-06 23:45:12,534 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2019-10-06 23:45:12,534 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-06 23:45:12,536 INFO L162 IcfgInterpreter]: Started Sifa with 15 locations of interest [2019-10-06 23:45:12,536 INFO L169 IcfgInterpreter]: Building call graph [2019-10-06 23:45:12,537 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-06 23:45:12,537 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-06 23:45:12,537 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-06 23:45:12,560 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-06 23:45:13,206 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 21 for LOIs [2019-10-06 23:45:13,214 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-06 23:45:13,218 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-06 23:45:13,218 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-06 23:45:13,218 INFO L193 IcfgInterpreter]: Reachable states at location L14-3 satisfy 147#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |main_~#b~0.offset| 0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 |main_~#b~0.offset|) (= |main_~#b~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-06 23:45:13,219 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 202#(and (exists ((v_prenex_6 Int) (v_prenex_5 Int) (|v_main_~#b~0.offset_BEFORE_CALL_3| Int) (|v_main_~#b~0.base_BEFORE_CALL_3| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= 0 (select (select |#memory_int| |v_main_~#b~0.base_BEFORE_CALL_3|) |v_main_~#b~0.offset_BEFORE_CALL_3|)))) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 (select (select |#memory_int| v_prenex_6) v_prenex_5))))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-06 23:45:13,219 INFO L193 IcfgInterpreter]: Reachable states at location L22 satisfy 192#(and (< main_~x~0 100000) (= main_~x~0 0) (= |main_#t~mem8| (select (select |#memory_int| |main_~#b~0.base|) (+ (* 4 main_~x~0) |main_~#b~0.offset|))) (<= 100000 main_~i~0) (not (< main_~i~0 100000)) (<= main_~x~0 0) (<= 0 main_~x~0)) [2019-10-06 23:45:13,219 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 207#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_prenex_6 Int) (v_prenex_5 Int) (|v_main_~#b~0.offset_BEFORE_CALL_3| Int) (|v_main_~#b~0.base_BEFORE_CALL_3| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= 0 (select (select |#memory_int| |v_main_~#b~0.base_BEFORE_CALL_3|) |v_main_~#b~0.offset_BEFORE_CALL_3|)))) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 (select (select |#memory_int| v_prenex_6) v_prenex_5))))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-06 23:45:13,219 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 216#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-06 23:45:13,220 INFO L193 IcfgInterpreter]: Reachable states at location L17-3 satisfy 182#true [2019-10-06 23:45:13,220 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 212#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_prenex_6 Int) (v_prenex_5 Int) (|v_main_~#b~0.offset_BEFORE_CALL_3| Int) (|v_main_~#b~0.base_BEFORE_CALL_3| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= 0 (select (select |#memory_int| |v_main_~#b~0.base_BEFORE_CALL_3|) |v_main_~#b~0.offset_BEFORE_CALL_3|)))) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 (select (select |#memory_int| v_prenex_6) v_prenex_5))))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-06 23:45:13,220 INFO L193 IcfgInterpreter]: Reachable states at location L7-2 satisfy 71#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |main_~#b~0.offset| 0) (= |main_~#b~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (= (store (store |old(#length)| |main_~#a~0.base| 400000) |main_~#b~0.base| 400000) |#length|) (<= 0 main_~i~0) (= 0 |#NULL.base|) (<= |main_~#b~0.offset| 0) (= |#valid| (store (store |old(#valid)| |main_~#a~0.base| 1) |main_~#b~0.base| 1)) (not (= |main_~#b~0.base| 0)) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (= |main_~#b~0.offset| 0) (= |main_~#a~0.offset| 0) (< |main_~#b~0.base| |#StackHeapBarrier|) (<= main_~i~0 0) (= 0 (select |old(#valid)| 0)) (= (select (store |old(#valid)| |main_~#a~0.base| 1) |main_~#b~0.base|) 0) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= |#NULL.base| 0) (<= 0 |main_~#b~0.offset|) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-06 23:45:13,220 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)) [2019-10-06 23:45:13,220 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)) [2019-10-06 23:45:13,221 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 221#(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)) [2019-10-06 23:45:13,221 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-06 23:45:13,221 INFO L193 IcfgInterpreter]: Reachable states at location L21-3 satisfy 187#(and (= main_~x~0 0) (<= 100000 main_~i~0) (not (< main_~i~0 100000)) (<= main_~x~0 0) (<= 0 main_~x~0)) [2019-10-06 23:45:13,221 INFO L193 IcfgInterpreter]: Reachable states at location L11-3 satisfy 109#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |main_~#b~0.offset| 0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 |main_~#b~0.offset|) (= |main_~#b~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-06 23:45:13,222 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 197#(exists ((v_prenex_6 Int) (v_prenex_5 Int) (|v_main_~#b~0.offset_BEFORE_CALL_3| Int) (|v_main_~#b~0.base_BEFORE_CALL_3| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= 0 (select (select |#memory_int| |v_main_~#b~0.base_BEFORE_CALL_3|) |v_main_~#b~0.offset_BEFORE_CALL_3|)))) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 (select (select |#memory_int| v_prenex_6) v_prenex_5))))) [2019-10-06 23:45:13,984 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-06 23:45:13,985 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13, 11] total 35 [2019-10-06 23:45:13,987 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2019-10-06 23:45:13,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2019-10-06 23:45:13,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=863, Unknown=0, NotChecked=0, Total=1190 [2019-10-06 23:45:13,988 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand 35 states. [2019-10-06 23:45:16,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-06 23:45:16,317 INFO L93 Difference]: Finished difference Result 157 states and 212 transitions. [2019-10-06 23:45:16,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-10-06 23:45:16,318 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 54 [2019-10-06 23:45:16,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-06 23:45:16,321 INFO L225 Difference]: With dead ends: 157 [2019-10-06 23:45:16,322 INFO L226 Difference]: Without dead ends: 115 [2019-10-06 23:45:16,325 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 143 SyntacticMatches, 22 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1771 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=976, Invalid=3056, Unknown=0, NotChecked=0, Total=4032 [2019-10-06 23:45:16,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2019-10-06 23:45:16,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 106. [2019-10-06 23:45:16,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2019-10-06 23:45:16,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 110 transitions. [2019-10-06 23:45:16,355 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 110 transitions. Word has length 54 [2019-10-06 23:45:16,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-06 23:45:16,356 INFO L462 AbstractCegarLoop]: Abstraction has 106 states and 110 transitions. [2019-10-06 23:45:16,356 INFO L463 AbstractCegarLoop]: Interpolant automaton has 35 states. [2019-10-06 23:45:16,356 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 110 transitions. [2019-10-06 23:45:16,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-10-06 23:45:16,358 INFO L377 BasicCegarLoop]: Found error trace [2019-10-06 23:45:16,358 INFO L385 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-06 23:45:16,562 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-06 23:45:16,563 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-06 23:45:16,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-06 23:45:16,563 INFO L82 PathProgramCache]: Analyzing trace with hash -2052149575, now seen corresponding path program 4 times [2019-10-06 23:45:16,564 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-06 23:45:16,564 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-06 23:45:16,564 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-06 23:45:16,564 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-06 23:45:16,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-06 23:45:16,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-06 23:45:16,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 759 trivial. 0 not checked. [2019-10-06 23:45:16,994 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-06 23:45:16,994 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-06 23:45:16,994 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-06 23:45:17,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-06 23:45:17,127 INFO L256 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 24 conjunts are in the unsatisfiable core [2019-10-06 23:45:17,133 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-06 23:45:17,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 759 trivial. 0 not checked. [2019-10-06 23:45:17,172 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-06 23:45:17,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 759 trivial. 0 not checked. [2019-10-06 23:45:17,912 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-06 23:45:17,914 INFO L162 IcfgInterpreter]: Started Sifa with 15 locations of interest [2019-10-06 23:45:17,914 INFO L169 IcfgInterpreter]: Building call graph [2019-10-06 23:45:17,915 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-06 23:45:17,915 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-06 23:45:17,915 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-06 23:45:17,940 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-06 23:45:18,535 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 21 for LOIs [2019-10-06 23:45:18,542 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-06 23:45:18,544 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-06 23:45:18,545 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-06 23:45:18,545 INFO L193 IcfgInterpreter]: Reachable states at location L14-3 satisfy 147#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |main_~#b~0.offset| 0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 |main_~#b~0.offset|) (= |main_~#b~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-06 23:45:18,545 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 202#(and (exists ((v_prenex_7 Int) (|v_main_~#b~0.offset_BEFORE_CALL_4| Int) (|v_main_~#b~0.base_BEFORE_CALL_4| Int) (v_prenex_8 Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 (select (select |#memory_int| |v_main_~#b~0.base_BEFORE_CALL_4|) |v_main_~#b~0.offset_BEFORE_CALL_4|))) (and (not (= 0 (select (select |#memory_int| v_prenex_8) v_prenex_7))) (= |__VERIFIER_assert_#in~cond| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-06 23:45:18,545 INFO L193 IcfgInterpreter]: Reachable states at location L22 satisfy 192#(and (< main_~x~0 100000) (= main_~x~0 0) (= |main_#t~mem8| (select (select |#memory_int| |main_~#b~0.base|) (+ (* 4 main_~x~0) |main_~#b~0.offset|))) (<= 100000 main_~i~0) (not (< main_~i~0 100000)) (<= main_~x~0 0) (<= 0 main_~x~0)) [2019-10-06 23:45:18,546 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 207#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (exists ((v_prenex_7 Int) (|v_main_~#b~0.offset_BEFORE_CALL_4| Int) (|v_main_~#b~0.base_BEFORE_CALL_4| Int) (v_prenex_8 Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 (select (select |#memory_int| |v_main_~#b~0.base_BEFORE_CALL_4|) |v_main_~#b~0.offset_BEFORE_CALL_4|))) (and (not (= 0 (select (select |#memory_int| v_prenex_8) v_prenex_7))) (= |__VERIFIER_assert_#in~cond| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-06 23:45:18,546 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 216#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-06 23:45:18,546 INFO L193 IcfgInterpreter]: Reachable states at location L17-3 satisfy 182#true [2019-10-06 23:45:18,546 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 212#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (exists ((v_prenex_7 Int) (|v_main_~#b~0.offset_BEFORE_CALL_4| Int) (|v_main_~#b~0.base_BEFORE_CALL_4| Int) (v_prenex_8 Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 (select (select |#memory_int| |v_main_~#b~0.base_BEFORE_CALL_4|) |v_main_~#b~0.offset_BEFORE_CALL_4|))) (and (not (= 0 (select (select |#memory_int| v_prenex_8) v_prenex_7))) (= |__VERIFIER_assert_#in~cond| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-06 23:45:18,546 INFO L193 IcfgInterpreter]: Reachable states at location L7-2 satisfy 71#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |main_~#b~0.offset| 0) (= |main_~#b~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (= (store (store |old(#length)| |main_~#a~0.base| 400000) |main_~#b~0.base| 400000) |#length|) (<= 0 main_~i~0) (= 0 |#NULL.base|) (<= |main_~#b~0.offset| 0) (= |#valid| (store (store |old(#valid)| |main_~#a~0.base| 1) |main_~#b~0.base| 1)) (not (= |main_~#b~0.base| 0)) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (= |main_~#b~0.offset| 0) (= |main_~#a~0.offset| 0) (< |main_~#b~0.base| |#StackHeapBarrier|) (<= main_~i~0 0) (= 0 (select |old(#valid)| 0)) (= (select (store |old(#valid)| |main_~#a~0.base| 1) |main_~#b~0.base|) 0) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= |#NULL.base| 0) (<= 0 |main_~#b~0.offset|) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-06 23:45:18,547 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)) [2019-10-06 23:45:18,547 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)) [2019-10-06 23:45:18,547 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 221#(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)) [2019-10-06 23:45:18,547 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-06 23:45:18,548 INFO L193 IcfgInterpreter]: Reachable states at location L21-3 satisfy 187#(and (= main_~x~0 0) (<= 100000 main_~i~0) (not (< main_~i~0 100000)) (<= main_~x~0 0) (<= 0 main_~x~0)) [2019-10-06 23:45:18,548 INFO L193 IcfgInterpreter]: Reachable states at location L11-3 satisfy 109#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |main_~#b~0.offset| 0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 |main_~#b~0.offset|) (= |main_~#b~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-06 23:45:18,548 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 197#(exists ((v_prenex_7 Int) (|v_main_~#b~0.offset_BEFORE_CALL_4| Int) (|v_main_~#b~0.base_BEFORE_CALL_4| Int) (v_prenex_8 Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 (select (select |#memory_int| |v_main_~#b~0.base_BEFORE_CALL_4|) |v_main_~#b~0.offset_BEFORE_CALL_4|))) (and (not (= 0 (select (select |#memory_int| v_prenex_8) v_prenex_7))) (= |__VERIFIER_assert_#in~cond| 0)))) [2019-10-06 23:45:20,331 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-06 23:45:20,331 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25, 11] total 59 [2019-10-06 23:45:20,333 INFO L442 AbstractCegarLoop]: Interpolant automaton has 59 states [2019-10-06 23:45:20,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2019-10-06 23:45:20,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1203, Invalid=2219, Unknown=0, NotChecked=0, Total=3422 [2019-10-06 23:45:20,337 INFO L87 Difference]: Start difference. First operand 106 states and 110 transitions. Second operand 59 states. [2019-10-06 23:45:26,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-06 23:45:26,127 INFO L93 Difference]: Finished difference Result 289 states and 392 transitions. [2019-10-06 23:45:26,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2019-10-06 23:45:26,129 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 102 [2019-10-06 23:45:26,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-06 23:45:26,132 INFO L225 Difference]: With dead ends: 289 [2019-10-06 23:45:26,132 INFO L226 Difference]: Without dead ends: 211 [2019-10-06 23:45:26,138 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 275 SyntacticMatches, 46 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6013 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=3604, Invalid=8828, Unknown=0, NotChecked=0, Total=12432 [2019-10-06 23:45:26,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2019-10-06 23:45:26,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 202. [2019-10-06 23:45:26,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2019-10-06 23:45:26,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 206 transitions. [2019-10-06 23:45:26,169 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 206 transitions. Word has length 102 [2019-10-06 23:45:26,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-06 23:45:26,169 INFO L462 AbstractCegarLoop]: Abstraction has 202 states and 206 transitions. [2019-10-06 23:45:26,170 INFO L463 AbstractCegarLoop]: Interpolant automaton has 59 states. [2019-10-06 23:45:26,170 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 206 transitions. [2019-10-06 23:45:26,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2019-10-06 23:45:26,173 INFO L377 BasicCegarLoop]: Found error trace [2019-10-06 23:45:26,174 INFO L385 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-06 23:45:26,378 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-06 23:45:26,379 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-06 23:45:26,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-06 23:45:26,379 INFO L82 PathProgramCache]: Analyzing trace with hash -118693447, now seen corresponding path program 5 times [2019-10-06 23:45:26,379 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-06 23:45:26,380 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-06 23:45:26,380 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-06 23:45:26,380 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-06 23:45:26,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-06 23:45:26,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-06 23:45:27,786 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 3243 trivial. 0 not checked. [2019-10-06 23:45:27,786 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-06 23:45:27,787 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-06 23:45:27,787 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true