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-industry-pattern/array_shadowinit.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 00:35:43,292 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 00:35:43,295 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 00:35:43,314 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 00:35:43,315 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 00:35:43,318 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 00:35:43,320 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 00:35:43,330 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 00:35:43,335 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 00:35:43,338 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 00:35:43,339 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 00:35:43,341 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 00:35:43,341 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 00:35:43,343 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 00:35:43,345 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 00:35:43,346 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 00:35:43,348 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 00:35:43,350 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 00:35:43,352 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 00:35:43,355 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 00:35:43,356 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 00:35:43,357 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 00:35:43,358 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 00:35:43,359 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 00:35:43,361 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-07 00:35:43,368 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 00:35:43,369 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 00:35:43,370 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 00:35:43,370 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-07 00:35:43,384 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 00:35:43,385 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 00:35:43,386 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 00:35:43,386 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 00:35:43,386 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 00:35:43,387 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 00:35:43,387 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 00:35:43,387 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 00:35:43,387 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 00:35:43,387 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 00:35:43,388 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 00:35:43,388 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 00:35:43,388 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 00:35:43,388 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 00:35:43,388 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 00:35:43,389 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 00:35:43,389 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 00:35:43,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 00:35:43,389 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 00:35:43,389 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 00:35:43,390 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 00:35:43,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 00:35:43,390 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 00:35:43,390 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 00:35:43,390 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 00:35:43,391 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 00:35:43,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 00:35:43,391 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 00:35:43,391 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-07 00:35:43,689 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 00:35:43,703 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 00:35:43,706 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 00:35:43,708 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 00:35:43,709 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 00:35:43,709 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-industry-pattern/array_shadowinit.i [2019-10-07 00:35:43,775 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef2a26703/656ce69015664eb78f157af4ea1671e8/FLAG6882c211b [2019-10-07 00:35:44,235 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 00:35:44,235 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-industry-pattern/array_shadowinit.i [2019-10-07 00:35:44,243 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef2a26703/656ce69015664eb78f157af4ea1671e8/FLAG6882c211b [2019-10-07 00:35:44,576 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef2a26703/656ce69015664eb78f157af4ea1671e8 [2019-10-07 00:35:44,589 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 00:35:44,591 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 00:35:44,592 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 00:35:44,592 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 00:35:44,598 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 00:35:44,598 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:35:44" (1/1) ... [2019-10-07 00:35:44,601 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5014cfc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:35:44, skipping insertion in model container [2019-10-07 00:35:44,601 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:35:44" (1/1) ... [2019-10-07 00:35:44,609 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 00:35:44,627 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 00:35:44,832 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 00:35:44,838 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 00:35:44,868 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 00:35:44,896 INFO L192 MainTranslator]: Completed translation [2019-10-07 00:35:44,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:35:44 WrapperNode [2019-10-07 00:35:44,897 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 00:35:44,898 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 00:35:44,898 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 00:35:44,898 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 00:35:45,016 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:35:44" (1/1) ... [2019-10-07 00:35:45,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:35:44" (1/1) ... [2019-10-07 00:35:45,027 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:35:44" (1/1) ... [2019-10-07 00:35:45,029 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:35:44" (1/1) ... [2019-10-07 00:35:45,041 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:35:44" (1/1) ... [2019-10-07 00:35:45,047 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:35:44" (1/1) ... [2019-10-07 00:35:45,053 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:35:44" (1/1) ... [2019-10-07 00:35:45,063 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 00:35:45,066 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 00:35:45,066 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 00:35:45,066 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 00:35:45,067 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:35:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 00:35:45,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 00:35:45,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 00:35:45,130 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-07 00:35:45,130 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 00:35:45,130 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 00:35:45,130 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-07 00:35:45,130 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 00:35:45,130 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 00:35:45,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 00:35:45,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 00:35:45,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 00:35:45,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 00:35:45,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 00:35:45,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 00:35:45,438 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 00:35:45,438 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-07 00:35:45,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 12:35:45 BoogieIcfgContainer [2019-10-07 00:35:45,440 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 00:35:45,441 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 00:35:45,441 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 00:35:45,447 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 00:35:45,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 12:35:44" (1/3) ... [2019-10-07 00:35:45,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18305fbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 12:35:45, skipping insertion in model container [2019-10-07 00:35:45,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:35:44" (2/3) ... [2019-10-07 00:35:45,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18305fbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 12:35:45, skipping insertion in model container [2019-10-07 00:35:45,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 12:35:45" (3/3) ... [2019-10-07 00:35:45,454 INFO L109 eAbstractionObserver]: Analyzing ICFG array_shadowinit.i [2019-10-07 00:35:45,472 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 00:35:45,480 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 00:35:45,492 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 00:35:45,526 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 00:35:45,526 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 00:35:45,526 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 00:35:45,526 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 00:35:45,527 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 00:35:45,527 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 00:35:45,527 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 00:35:45,527 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 00:35:45,549 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-10-07 00:35:45,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-07 00:35:45,556 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:35:45,557 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:35:45,559 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:35:45,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:35:45,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1398188510, now seen corresponding path program 1 times [2019-10-07 00:35:45,572 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:35:45,573 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:35:45,573 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:35:45,573 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:35:45,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:35:45,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:35:45,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:35:45,773 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:35:45,773 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:35:45,774 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 00:35:45,778 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 00:35:45,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 00:35:45,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 00:35:45,793 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. [2019-10-07 00:35:45,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:35:45,859 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2019-10-07 00:35:45,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 00:35:45,862 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2019-10-07 00:35:45,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:35:45,869 INFO L225 Difference]: With dead ends: 34 [2019-10-07 00:35:45,870 INFO L226 Difference]: Without dead ends: 17 [2019-10-07 00:35:45,873 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 00:35:45,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-10-07 00:35:45,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-10-07 00:35:45,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-10-07 00:35:45,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2019-10-07 00:35:45,910 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 12 [2019-10-07 00:35:45,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:35:45,911 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2019-10-07 00:35:45,911 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 00:35:45,911 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2019-10-07 00:35:45,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-07 00:35:45,912 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:35:45,913 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:35:45,913 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:35:45,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:35:45,914 INFO L82 PathProgramCache]: Analyzing trace with hash 2852601, now seen corresponding path program 1 times [2019-10-07 00:35:45,914 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:35:45,914 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:35:45,915 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:35:45,915 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:35:45,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:35:45,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:35:46,157 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 00:35:46,158 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:35:46,158 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:35:46,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:35:46,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:35:46,213 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-07 00:35:46,220 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:35:46,289 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-10-07 00:35:46,291 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-07 00:35:46,298 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-07 00:35:46,299 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-07 00:35:46,300 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2019-10-07 00:35:46,334 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2019-10-07 00:35:46,335 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-07 00:35:46,349 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-07 00:35:46,349 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-07 00:35:46,350 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:7 [2019-10-07 00:35:46,381 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 00:35:46,381 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:35:46,474 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2019-10-07 00:35:46,492 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2019-10-07 00:35:46,493 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2019-10-07 00:35:46,501 INFO L567 ElimStorePlain]: treesize reduction 4, result has 63.6 percent of original size [2019-10-07 00:35:46,502 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-07 00:35:46,504 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-07 00:35:46,505 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-07 00:35:46,505 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:14, output treesize:7 [2019-10-07 00:35:46,535 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 00:35:46,536 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:35:46,562 INFO L162 IcfgInterpreter]: Started Sifa with 13 locations of interest [2019-10-07 00:35:46,562 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:35:46,569 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:35:46,577 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:35:46,578 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:35:46,782 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-07 00:35:47,219 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2019-10-07 00:35:47,251 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-10-07 00:35:47,266 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 00:35:47,266 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 00:35:47,267 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 96#(and (exists ((v_prenex_1 Int) (|v_main_~#a~0.base_BEFORE_CALL_1| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_1|) 0) 0)) (= |#NULL.offset| 0) (< 0 ~N~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| v_prenex_1) 0) 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (< 0 ~N~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:35:47,268 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 101#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_prenex_1 Int) (|v_main_~#a~0.base_BEFORE_CALL_1| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_1|) 0) 0)) (= |#NULL.offset| 0) (< 0 ~N~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| v_prenex_1) 0) 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (< 0 ~N~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:35:47,268 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 110#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 00:35:47,269 INFO L193 IcfgInterpreter]: Reachable states at location L18-2 satisfy 81#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= main_~i~0 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= main_~i~0 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:35:47,273 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:35:47,273 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 |old(~N~0)|) (<= 0 ~N~0) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#memory_int| |old(#memory_int)|) (<= |old(~N~0)| 0) (<= 0 |old(~N~0)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:35:47,274 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 115#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:35:47,274 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 00:35:47,275 INFO L193 IcfgInterpreter]: Reachable states at location L7 satisfy 38#(and (= 0 |#NULL.base|) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 |old(~N~0)|) (<= 0 (+ ~N~0 2147483648)) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (<= |old(~N~0)| 0) (<= 0 |old(~N~0)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:35:47,275 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 106#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_prenex_1 Int) (|v_main_~#a~0.base_BEFORE_CALL_1| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_1|) 0) 0)) (= |#NULL.offset| 0) (< 0 ~N~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| v_prenex_1) 0) 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (< 0 ~N~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:35:47,276 INFO L193 IcfgInterpreter]: Reachable states at location L19 satisfy 86#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= main_~i~0 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= main_~i~0 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:35:47,276 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 91#(exists ((v_prenex_1 Int) (|v_main_~#a~0.base_BEFORE_CALL_1| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_1|) 0) 0)) (= |#NULL.offset| 0) (< 0 ~N~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| v_prenex_1) 0) 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (< 0 ~N~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-07 00:35:47,277 INFO L193 IcfgInterpreter]: Reachable states at location L12-2 satisfy 76#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (<= 0 main_~i~0) (= 0 |#NULL.base|) (<= 0 |#NULL.base|) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (<= 0 |#NULL.offset|) (= |#valid| (store |old(#valid)| |main_~#a~0.base| 1)) (<= 0 (+ ~N~0 2147483648)) (= main_~k~0 0) (<= main_~k~0 0) (= |main_~#a~0.offset| 0) (<= ~N~0 2147483647) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= |main_~#a~0.offset| 0) (<= main_~i~0 0) (< 0 ~N~0) (= 0 (select |old(#valid)| 0)) (<= |#NULL.offset| 0) (= 0 |old(~N~0)|) (<= 0 ~N~0) (= (store |old(#length)| |main_~#a~0.base| (* 4 ~N~0)) |#length|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0)) [2019-10-07 00:35:48,127 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 00:35:48,128 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 11] total 24 [2019-10-07 00:35:48,132 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-10-07 00:35:48,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-10-07 00:35:48,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2019-10-07 00:35:48,142 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 25 states. [2019-10-07 00:35:48,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:35:48,911 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2019-10-07 00:35:48,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-07 00:35:48,912 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 13 [2019-10-07 00:35:48,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:35:48,913 INFO L225 Difference]: With dead ends: 26 [2019-10-07 00:35:48,913 INFO L226 Difference]: Without dead ends: 24 [2019-10-07 00:35:48,915 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=126, Invalid=930, Unknown=0, NotChecked=0, Total=1056 [2019-10-07 00:35:48,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-10-07 00:35:48,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2019-10-07 00:35:48,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-10-07 00:35:48,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2019-10-07 00:35:48,933 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 13 [2019-10-07 00:35:48,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:35:48,934 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2019-10-07 00:35:48,934 INFO L463 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-10-07 00:35:48,934 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2019-10-07 00:35:48,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-07 00:35:48,935 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:35:48,935 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:35:49,141 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:35:49,142 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:35:49,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:35:49,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1841809294, now seen corresponding path program 1 times [2019-10-07 00:35:49,143 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:35:49,144 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:35:49,144 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:35:49,144 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:35:49,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:35:49,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:35:49,227 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:35:49,227 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:35:49,228 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:35:49,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 00:35:49,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:35:49,272 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-07 00:35:49,274 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:35:49,315 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:35:49,315 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:35:49,354 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:35:49,355 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:35:49,356 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-07 00:35:49,356 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:35:49,357 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:35:49,357 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:35:49,358 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:35:49,397 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 25 for LOIs [2019-10-07 00:35:49,974 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2019-10-07 00:35:49,991 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-10-07 00:35:50,001 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 00:35:50,001 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 00:35:50,001 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 175#(and (exists ((|v_main_~#a~0.base_BEFORE_CALL_8| Int) (v_main_~i~0_BEFORE_CALL_11 Int)) (or (and (< v_main_~i~0_BEFORE_CALL_11 ~N~0) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (= v_main_~i~0_BEFORE_CALL_11 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_8|) (* 4 v_main_~i~0_BEFORE_CALL_11))) (<= 0 v_main_~i~0_BEFORE_CALL_11) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (< v_main_~i~0_BEFORE_CALL_11 ~N~0) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (not (= v_main_~i~0_BEFORE_CALL_11 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_8|) (* 4 v_main_~i~0_BEFORE_CALL_11)))) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_11) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:35:50,002 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 190#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_main_~#a~0.base_BEFORE_CALL_8| Int) (v_main_~i~0_BEFORE_CALL_11 Int)) (or (and (< v_main_~i~0_BEFORE_CALL_11 ~N~0) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (= v_main_~i~0_BEFORE_CALL_11 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_8|) (* 4 v_main_~i~0_BEFORE_CALL_11))) (<= 0 v_main_~i~0_BEFORE_CALL_11) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (< v_main_~i~0_BEFORE_CALL_11 ~N~0) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (not (= v_main_~i~0_BEFORE_CALL_11 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_8|) (* 4 v_main_~i~0_BEFORE_CALL_11)))) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_11) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:35:50,003 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 199#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 00:35:50,003 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertEXIT satisfy 185#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((|v_main_~#a~0.base_BEFORE_CALL_8| Int) (v_main_~i~0_BEFORE_CALL_11 Int)) (or (and (< v_main_~i~0_BEFORE_CALL_11 ~N~0) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (= v_main_~i~0_BEFORE_CALL_11 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_8|) (* 4 v_main_~i~0_BEFORE_CALL_11))) (<= 0 v_main_~i~0_BEFORE_CALL_11) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (< v_main_~i~0_BEFORE_CALL_11 ~N~0) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (not (= v_main_~i~0_BEFORE_CALL_11 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_8|) (* 4 v_main_~i~0_BEFORE_CALL_11)))) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_11) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:35:50,004 INFO L193 IcfgInterpreter]: Reachable states at location L18-2 satisfy 148#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:35:50,005 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:35:50,005 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (<= 0 ~N~0) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:35:50,005 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 204#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:35:50,006 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 00:35:50,006 INFO L193 IcfgInterpreter]: Reachable states at location L7 satisfy 38#(and (= 0 |#NULL.base|) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (<= 0 (+ ~N~0 2147483648)) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:35:50,006 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 195#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_main_~#a~0.base_BEFORE_CALL_8| Int) (v_main_~i~0_BEFORE_CALL_11 Int)) (or (and (< v_main_~i~0_BEFORE_CALL_11 ~N~0) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (= v_main_~i~0_BEFORE_CALL_11 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_8|) (* 4 v_main_~i~0_BEFORE_CALL_11))) (<= 0 v_main_~i~0_BEFORE_CALL_11) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (< v_main_~i~0_BEFORE_CALL_11 ~N~0) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (not (= v_main_~i~0_BEFORE_CALL_11 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_8|) (* 4 v_main_~i~0_BEFORE_CALL_11)))) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_11) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:35:50,008 INFO L193 IcfgInterpreter]: Reachable states at location L19-1 satisfy 166#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= |main_#t~mem1| 2147483647) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (= main_~i~0 |main_#t~mem1|) (<= 0 |main_#t~mem1|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:35:50,008 INFO L193 IcfgInterpreter]: Reachable states at location L19 satisfy 153#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:35:50,009 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 170#(exists ((|v_main_~#a~0.base_BEFORE_CALL_8| Int) (v_main_~i~0_BEFORE_CALL_11 Int)) (or (and (< v_main_~i~0_BEFORE_CALL_11 ~N~0) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (= v_main_~i~0_BEFORE_CALL_11 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_8|) (* 4 v_main_~i~0_BEFORE_CALL_11))) (<= 0 v_main_~i~0_BEFORE_CALL_11) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (< v_main_~i~0_BEFORE_CALL_11 ~N~0) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (not (= v_main_~i~0_BEFORE_CALL_11 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_8|) (* 4 v_main_~i~0_BEFORE_CALL_11)))) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_11) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-07 00:35:50,009 INFO L193 IcfgInterpreter]: Reachable states at location L2-3 satisfy 180#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((|v_main_~#a~0.base_BEFORE_CALL_8| Int) (v_main_~i~0_BEFORE_CALL_11 Int)) (or (and (< v_main_~i~0_BEFORE_CALL_11 ~N~0) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (= v_main_~i~0_BEFORE_CALL_11 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_8|) (* 4 v_main_~i~0_BEFORE_CALL_11))) (<= 0 v_main_~i~0_BEFORE_CALL_11) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (< v_main_~i~0_BEFORE_CALL_11 ~N~0) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (not (= v_main_~i~0_BEFORE_CALL_11 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_8|) (* 4 v_main_~i~0_BEFORE_CALL_11)))) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_11) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:35:50,009 INFO L193 IcfgInterpreter]: Reachable states at location L12-2 satisfy 76#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (<= 0 main_~i~0) (= 0 |#NULL.base|) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (= |#valid| (store |old(#valid)| |main_~#a~0.base| 1)) (<= 0 (+ ~N~0 2147483648)) (= main_~k~0 0) (<= main_~k~0 0) (= |main_~#a~0.offset| 0) (<= ~N~0 2147483647) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= main_~i~0 0) (< 0 ~N~0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (= (store |old(#length)| |main_~#a~0.base| (* 4 ~N~0)) |#length|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0)) [2019-10-07 00:35:50,818 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 00:35:50,818 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6, 12] total 23 [2019-10-07 00:35:50,820 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-10-07 00:35:50,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-10-07 00:35:50,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=432, Unknown=0, NotChecked=0, Total=506 [2019-10-07 00:35:50,821 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 23 states. [2019-10-07 00:35:51,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:35:51,890 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2019-10-07 00:35:51,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-10-07 00:35:51,891 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 20 [2019-10-07 00:35:51,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:35:51,894 INFO L225 Difference]: With dead ends: 45 [2019-10-07 00:35:51,895 INFO L226 Difference]: Without dead ends: 28 [2019-10-07 00:35:51,897 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 40 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=241, Invalid=1399, Unknown=0, NotChecked=0, Total=1640 [2019-10-07 00:35:51,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-10-07 00:35:51,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2019-10-07 00:35:51,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-10-07 00:35:51,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2019-10-07 00:35:51,919 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 20 [2019-10-07 00:35:51,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:35:51,920 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2019-10-07 00:35:51,920 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-10-07 00:35:51,920 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2019-10-07 00:35:51,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-07 00:35:51,921 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:35:51,922 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:35:52,125 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:35:52,126 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:35:52,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:35:52,126 INFO L82 PathProgramCache]: Analyzing trace with hash -501757299, now seen corresponding path program 2 times [2019-10-07 00:35:52,127 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:35:52,127 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:35:52,127 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:35:52,128 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:35:52,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:35:52,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:35:52,328 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:35:52,329 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:35:52,329 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:35:52,329 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 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 [2019-10-07 00:35:52,403 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-07 00:35:52,403 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-07 00:35:52,404 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 24 conjunts are in the unsatisfiable core [2019-10-07 00:35:52,410 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:35:52,654 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:35:52,654 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:35:52,759 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:35:52,760 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:35:52,761 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-07 00:35:52,761 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:35:52,762 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:35:52,762 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:35:52,762 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:35:52,805 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 25 for LOIs [2019-10-07 00:35:53,152 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2019-10-07 00:35:53,164 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-10-07 00:35:53,167 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 00:35:53,168 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 00:35:53,168 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 175#(and (exists ((|v_main_~#a~0.base_BEFORE_CALL_19| Int) (v_main_~i~0_BEFORE_CALL_23 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (= v_main_~i~0_BEFORE_CALL_23 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_19|) (* 4 v_main_~i~0_BEFORE_CALL_23))) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_23) (< v_main_~i~0_BEFORE_CALL_23 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (= v_main_~i~0_BEFORE_CALL_23 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_19|) (* 4 v_main_~i~0_BEFORE_CALL_23)))) (<= 0 v_main_~i~0_BEFORE_CALL_23) (< v_main_~i~0_BEFORE_CALL_23 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:35:53,168 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 190#(and (exists ((|v_main_~#a~0.base_BEFORE_CALL_19| Int) (v_main_~i~0_BEFORE_CALL_23 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (= v_main_~i~0_BEFORE_CALL_23 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_19|) (* 4 v_main_~i~0_BEFORE_CALL_23))) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_23) (< v_main_~i~0_BEFORE_CALL_23 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (= v_main_~i~0_BEFORE_CALL_23 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_19|) (* 4 v_main_~i~0_BEFORE_CALL_23)))) (<= 0 v_main_~i~0_BEFORE_CALL_23) (< v_main_~i~0_BEFORE_CALL_23 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= __VERIFIER_assert_~cond 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)) [2019-10-07 00:35:53,169 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 199#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 00:35:53,169 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertEXIT satisfy 185#(and (exists ((|v_main_~#a~0.base_BEFORE_CALL_19| Int) (v_main_~i~0_BEFORE_CALL_23 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (= v_main_~i~0_BEFORE_CALL_23 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_19|) (* 4 v_main_~i~0_BEFORE_CALL_23))) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_23) (< v_main_~i~0_BEFORE_CALL_23 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (= v_main_~i~0_BEFORE_CALL_23 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_19|) (* 4 v_main_~i~0_BEFORE_CALL_23)))) (<= 0 v_main_~i~0_BEFORE_CALL_23) (< v_main_~i~0_BEFORE_CALL_23 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (not (= 0 __VERIFIER_assert_~cond)) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:35:53,169 INFO L193 IcfgInterpreter]: Reachable states at location L18-2 satisfy 148#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:35:53,169 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:35:53,170 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 |old(~N~0)|) (<= 0 ~N~0) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:35:53,170 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 204#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:35:53,170 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 00:35:53,170 INFO L193 IcfgInterpreter]: Reachable states at location L7 satisfy 38#(and (= 0 |#NULL.base|) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 |old(~N~0)|) (<= 0 (+ ~N~0 2147483648)) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:35:53,171 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 195#(and (exists ((|v_main_~#a~0.base_BEFORE_CALL_19| Int) (v_main_~i~0_BEFORE_CALL_23 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (= v_main_~i~0_BEFORE_CALL_23 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_19|) (* 4 v_main_~i~0_BEFORE_CALL_23))) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_23) (< v_main_~i~0_BEFORE_CALL_23 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (= v_main_~i~0_BEFORE_CALL_23 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_19|) (* 4 v_main_~i~0_BEFORE_CALL_23)))) (<= 0 v_main_~i~0_BEFORE_CALL_23) (< v_main_~i~0_BEFORE_CALL_23 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= __VERIFIER_assert_~cond 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)) [2019-10-07 00:35:53,171 INFO L193 IcfgInterpreter]: Reachable states at location L19-1 satisfy 166#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= |main_#t~mem1| 2147483647) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (= main_~i~0 |main_#t~mem1|) (<= 0 |main_#t~mem1|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:35:53,171 INFO L193 IcfgInterpreter]: Reachable states at location L19 satisfy 153#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:35:53,171 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 170#(exists ((|v_main_~#a~0.base_BEFORE_CALL_19| Int) (v_main_~i~0_BEFORE_CALL_23 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (= v_main_~i~0_BEFORE_CALL_23 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_19|) (* 4 v_main_~i~0_BEFORE_CALL_23))) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_23) (< v_main_~i~0_BEFORE_CALL_23 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (= v_main_~i~0_BEFORE_CALL_23 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_19|) (* 4 v_main_~i~0_BEFORE_CALL_23)))) (<= 0 v_main_~i~0_BEFORE_CALL_23) (< v_main_~i~0_BEFORE_CALL_23 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-07 00:35:53,171 INFO L193 IcfgInterpreter]: Reachable states at location L2-3 satisfy 180#(and (exists ((|v_main_~#a~0.base_BEFORE_CALL_19| Int) (v_main_~i~0_BEFORE_CALL_23 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (= v_main_~i~0_BEFORE_CALL_23 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_19|) (* 4 v_main_~i~0_BEFORE_CALL_23))) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_23) (< v_main_~i~0_BEFORE_CALL_23 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (= v_main_~i~0_BEFORE_CALL_23 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_19|) (* 4 v_main_~i~0_BEFORE_CALL_23)))) (<= 0 v_main_~i~0_BEFORE_CALL_23) (< v_main_~i~0_BEFORE_CALL_23 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (not (= 0 __VERIFIER_assert_~cond)) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:35:53,172 INFO L193 IcfgInterpreter]: Reachable states at location L12-2 satisfy 76#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (<= 0 main_~i~0) (= 0 |#NULL.base|) (<= 0 |#NULL.base|) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (= |#valid| (store |old(#valid)| |main_~#a~0.base| 1)) (<= 0 (+ ~N~0 2147483648)) (= main_~k~0 0) (<= main_~k~0 0) (= |main_~#a~0.offset| 0) (<= ~N~0 2147483647) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= |main_~#a~0.offset| 0) (<= main_~i~0 0) (< 0 ~N~0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (= (store |old(#length)| |main_~#a~0.base| (* 4 ~N~0)) |#length|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0)) [2019-10-07 00:35:54,102 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 00:35:54,102 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 10, 12] total 35 [2019-10-07 00:35:54,104 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2019-10-07 00:35:54,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2019-10-07 00:35:54,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1081, Unknown=0, NotChecked=0, Total=1190 [2019-10-07 00:35:54,105 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 35 states. [2019-10-07 00:35:55,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:35:55,495 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2019-10-07 00:35:55,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-07 00:35:55,496 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 21 [2019-10-07 00:35:55,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:35:55,497 INFO L225 Difference]: With dead ends: 32 [2019-10-07 00:35:55,497 INFO L226 Difference]: Without dead ends: 30 [2019-10-07 00:35:55,500 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 34 SyntacticMatches, 6 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 660 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=268, Invalid=2282, Unknown=0, NotChecked=0, Total=2550 [2019-10-07 00:35:55,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-10-07 00:35:55,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2019-10-07 00:35:55,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-07 00:35:55,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2019-10-07 00:35:55,507 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 21 [2019-10-07 00:35:55,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:35:55,508 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2019-10-07 00:35:55,508 INFO L463 AbstractCegarLoop]: Interpolant automaton has 35 states. [2019-10-07 00:35:55,508 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2019-10-07 00:35:55,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-10-07 00:35:55,510 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:35:55,510 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:35:55,713 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:35:55,714 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:35:55,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:35:55,715 INFO L82 PathProgramCache]: Analyzing trace with hash -340228514, now seen corresponding path program 3 times [2019-10-07 00:35:55,715 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:35:55,716 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:35:55,716 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:35:55,716 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:35:55,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:35:55,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:35:55,804 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 00:35:55,804 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:35:55,804 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:35:55,804 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 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 [2019-10-07 00:35:55,871 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-07 00:35:55,871 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-07 00:35:55,872 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-07 00:35:55,874 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:35:55,928 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 00:35:55,928 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:35:55,963 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 00:35:55,963 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:35:55,965 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-07 00:35:55,965 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:35:55,965 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:35:55,966 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:35:55,966 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:35:56,000 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 25 for LOIs [2019-10-07 00:35:56,316 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2019-10-07 00:35:56,326 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-10-07 00:35:56,330 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 00:35:56,330 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 00:35:56,331 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 175#(and (exists ((|v_main_~#a~0.base_BEFORE_CALL_28| Int) (v_main_~i~0_BEFORE_CALL_36 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (< v_main_~i~0_BEFORE_CALL_36 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_36) (<= 0 |#NULL.base|) (= v_main_~i~0_BEFORE_CALL_36 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_28|) (* 4 v_main_~i~0_BEFORE_CALL_36))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (not (= v_main_~i~0_BEFORE_CALL_36 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_28|) (* 4 v_main_~i~0_BEFORE_CALL_36)))) (< v_main_~i~0_BEFORE_CALL_36 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_36) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:35:56,331 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 190#(and (exists ((|v_main_~#a~0.base_BEFORE_CALL_28| Int) (v_main_~i~0_BEFORE_CALL_36 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (< v_main_~i~0_BEFORE_CALL_36 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_36) (<= 0 |#NULL.base|) (= v_main_~i~0_BEFORE_CALL_36 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_28|) (* 4 v_main_~i~0_BEFORE_CALL_36))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (not (= v_main_~i~0_BEFORE_CALL_36 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_28|) (* 4 v_main_~i~0_BEFORE_CALL_36)))) (< v_main_~i~0_BEFORE_CALL_36 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_36) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= __VERIFIER_assert_~cond 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)) [2019-10-07 00:35:56,331 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 199#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 00:35:56,331 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertEXIT satisfy 185#(and (exists ((|v_main_~#a~0.base_BEFORE_CALL_28| Int) (v_main_~i~0_BEFORE_CALL_36 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (< v_main_~i~0_BEFORE_CALL_36 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_36) (<= 0 |#NULL.base|) (= v_main_~i~0_BEFORE_CALL_36 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_28|) (* 4 v_main_~i~0_BEFORE_CALL_36))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (not (= v_main_~i~0_BEFORE_CALL_36 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_28|) (* 4 v_main_~i~0_BEFORE_CALL_36)))) (< v_main_~i~0_BEFORE_CALL_36 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_36) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (not (= 0 __VERIFIER_assert_~cond)) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:35:56,332 INFO L193 IcfgInterpreter]: Reachable states at location L18-2 satisfy 148#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:35:56,332 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:35:56,332 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (<= 0 ~N~0) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:35:56,332 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 204#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:35:56,332 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 00:35:56,333 INFO L193 IcfgInterpreter]: Reachable states at location L7 satisfy 38#(and (= 0 |#NULL.base|) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (<= 0 (+ ~N~0 2147483648)) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:35:56,333 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 195#(and (exists ((|v_main_~#a~0.base_BEFORE_CALL_28| Int) (v_main_~i~0_BEFORE_CALL_36 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (< v_main_~i~0_BEFORE_CALL_36 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_36) (<= 0 |#NULL.base|) (= v_main_~i~0_BEFORE_CALL_36 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_28|) (* 4 v_main_~i~0_BEFORE_CALL_36))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (not (= v_main_~i~0_BEFORE_CALL_36 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_28|) (* 4 v_main_~i~0_BEFORE_CALL_36)))) (< v_main_~i~0_BEFORE_CALL_36 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_36) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= __VERIFIER_assert_~cond 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)) [2019-10-07 00:35:56,333 INFO L193 IcfgInterpreter]: Reachable states at location L19-1 satisfy 166#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= |main_#t~mem1| 2147483647) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (= main_~i~0 |main_#t~mem1|) (<= 0 |main_#t~mem1|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:35:56,333 INFO L193 IcfgInterpreter]: Reachable states at location L19 satisfy 153#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:35:56,334 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 170#(exists ((|v_main_~#a~0.base_BEFORE_CALL_28| Int) (v_main_~i~0_BEFORE_CALL_36 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (< v_main_~i~0_BEFORE_CALL_36 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_36) (<= 0 |#NULL.base|) (= v_main_~i~0_BEFORE_CALL_36 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_28|) (* 4 v_main_~i~0_BEFORE_CALL_36))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (not (= v_main_~i~0_BEFORE_CALL_36 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_28|) (* 4 v_main_~i~0_BEFORE_CALL_36)))) (< v_main_~i~0_BEFORE_CALL_36 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_36) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-07 00:35:56,334 INFO L193 IcfgInterpreter]: Reachable states at location L2-3 satisfy 180#(and (exists ((|v_main_~#a~0.base_BEFORE_CALL_28| Int) (v_main_~i~0_BEFORE_CALL_36 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (< v_main_~i~0_BEFORE_CALL_36 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_36) (<= 0 |#NULL.base|) (= v_main_~i~0_BEFORE_CALL_36 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_28|) (* 4 v_main_~i~0_BEFORE_CALL_36))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (not (= v_main_~i~0_BEFORE_CALL_36 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_28|) (* 4 v_main_~i~0_BEFORE_CALL_36)))) (< v_main_~i~0_BEFORE_CALL_36 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_36) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (not (= 0 __VERIFIER_assert_~cond)) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:35:56,334 INFO L193 IcfgInterpreter]: Reachable states at location L12-2 satisfy 76#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (<= 0 main_~i~0) (= 0 |#NULL.base|) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (= |#valid| (store |old(#valid)| |main_~#a~0.base| 1)) (<= 0 (+ ~N~0 2147483648)) (= main_~k~0 0) (<= main_~k~0 0) (= |main_~#a~0.offset| 0) (<= ~N~0 2147483647) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= main_~i~0 0) (< 0 ~N~0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (= (store |old(#length)| |main_~#a~0.base| (* 4 ~N~0)) |#length|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0)) [2019-10-07 00:35:57,010 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 00:35:57,011 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8, 12] total 26 [2019-10-07 00:35:57,011 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-10-07 00:35:57,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-10-07 00:35:57,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2019-10-07 00:35:57,012 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 26 states. [2019-10-07 00:35:58,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:35:58,461 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2019-10-07 00:35:58,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-10-07 00:35:58,462 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 28 [2019-10-07 00:35:58,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:35:58,463 INFO L225 Difference]: With dead ends: 58 [2019-10-07 00:35:58,463 INFO L226 Difference]: Without dead ends: 34 [2019-10-07 00:35:58,464 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 60 SyntacticMatches, 7 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 765 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=354, Invalid=2096, Unknown=0, NotChecked=0, Total=2450 [2019-10-07 00:35:58,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-10-07 00:35:58,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2019-10-07 00:35:58,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-10-07 00:35:58,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2019-10-07 00:35:58,473 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 28 [2019-10-07 00:35:58,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:35:58,474 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2019-10-07 00:35:58,474 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-10-07 00:35:58,474 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2019-10-07 00:35:58,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-07 00:35:58,475 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:35:58,475 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:35:58,675 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:35:58,676 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:35:58,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:35:58,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1759654535, now seen corresponding path program 4 times [2019-10-07 00:35:58,678 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:35:58,678 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:35:58,679 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:35:58,679 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:35:58,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:35:58,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:35:58,867 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 00:35:58,867 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:35:58,868 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:35:58,868 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 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 [2019-10-07 00:35:58,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:35:58,941 INFO L256 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 23 conjunts are in the unsatisfiable core [2019-10-07 00:35:58,944 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:35:59,264 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 00:35:59,265 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:35:59,315 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 00:35:59,315 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:35:59,316 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-07 00:35:59,317 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:35:59,317 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:35:59,317 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:35:59,317 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:35:59,340 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-07 00:35:59,619 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2019-10-07 00:35:59,633 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-10-07 00:35:59,637 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 00:35:59,637 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 00:35:59,638 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 175#(and (exists ((|v_main_~#a~0.base_BEFORE_CALL_41| Int) (v_main_~i~0_BEFORE_CALL_50 Int)) (or (and (<= 0 v_main_~i~0_BEFORE_CALL_50) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_50 ~N~0) (<= 0 |#NULL.base|) (= v_main_~i~0_BEFORE_CALL_50 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_41|) (* 4 v_main_~i~0_BEFORE_CALL_50))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (<= 0 v_main_~i~0_BEFORE_CALL_50) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_50 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (not (= v_main_~i~0_BEFORE_CALL_50 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_41|) (* 4 v_main_~i~0_BEFORE_CALL_50)))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:35:59,638 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 190#(and (exists ((|v_main_~#a~0.base_BEFORE_CALL_41| Int) (v_main_~i~0_BEFORE_CALL_50 Int)) (or (and (<= 0 v_main_~i~0_BEFORE_CALL_50) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_50 ~N~0) (<= 0 |#NULL.base|) (= v_main_~i~0_BEFORE_CALL_50 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_41|) (* 4 v_main_~i~0_BEFORE_CALL_50))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (<= 0 v_main_~i~0_BEFORE_CALL_50) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_50 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (not (= v_main_~i~0_BEFORE_CALL_50 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_41|) (* 4 v_main_~i~0_BEFORE_CALL_50)))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= __VERIFIER_assert_~cond 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)) [2019-10-07 00:35:59,638 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 199#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 00:35:59,638 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertEXIT satisfy 185#(and (exists ((|v_main_~#a~0.base_BEFORE_CALL_41| Int) (v_main_~i~0_BEFORE_CALL_50 Int)) (or (and (<= 0 v_main_~i~0_BEFORE_CALL_50) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_50 ~N~0) (<= 0 |#NULL.base|) (= v_main_~i~0_BEFORE_CALL_50 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_41|) (* 4 v_main_~i~0_BEFORE_CALL_50))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (<= 0 v_main_~i~0_BEFORE_CALL_50) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_50 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (not (= v_main_~i~0_BEFORE_CALL_50 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_41|) (* 4 v_main_~i~0_BEFORE_CALL_50)))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (not (= 0 __VERIFIER_assert_~cond)) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:35:59,639 INFO L193 IcfgInterpreter]: Reachable states at location L18-2 satisfy 148#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:35:59,639 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:35:59,639 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (<= 0 ~N~0) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:35:59,639 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 204#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:35:59,639 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 00:35:59,640 INFO L193 IcfgInterpreter]: Reachable states at location L7 satisfy 38#(and (= 0 |#NULL.base|) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (<= 0 (+ ~N~0 2147483648)) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:35:59,643 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 195#(and (exists ((|v_main_~#a~0.base_BEFORE_CALL_41| Int) (v_main_~i~0_BEFORE_CALL_50 Int)) (or (and (<= 0 v_main_~i~0_BEFORE_CALL_50) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_50 ~N~0) (<= 0 |#NULL.base|) (= v_main_~i~0_BEFORE_CALL_50 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_41|) (* 4 v_main_~i~0_BEFORE_CALL_50))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (<= 0 v_main_~i~0_BEFORE_CALL_50) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_50 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (not (= v_main_~i~0_BEFORE_CALL_50 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_41|) (* 4 v_main_~i~0_BEFORE_CALL_50)))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= __VERIFIER_assert_~cond 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)) [2019-10-07 00:35:59,644 INFO L193 IcfgInterpreter]: Reachable states at location L19-1 satisfy 166#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= |main_#t~mem1| 2147483647) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (= main_~i~0 |main_#t~mem1|) (<= 0 |main_#t~mem1|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:35:59,644 INFO L193 IcfgInterpreter]: Reachable states at location L19 satisfy 153#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:35:59,644 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 170#(exists ((|v_main_~#a~0.base_BEFORE_CALL_41| Int) (v_main_~i~0_BEFORE_CALL_50 Int)) (or (and (<= 0 v_main_~i~0_BEFORE_CALL_50) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_50 ~N~0) (<= 0 |#NULL.base|) (= v_main_~i~0_BEFORE_CALL_50 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_41|) (* 4 v_main_~i~0_BEFORE_CALL_50))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (<= 0 v_main_~i~0_BEFORE_CALL_50) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_50 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (not (= v_main_~i~0_BEFORE_CALL_50 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_41|) (* 4 v_main_~i~0_BEFORE_CALL_50)))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-07 00:35:59,644 INFO L193 IcfgInterpreter]: Reachable states at location L2-3 satisfy 180#(and (exists ((|v_main_~#a~0.base_BEFORE_CALL_41| Int) (v_main_~i~0_BEFORE_CALL_50 Int)) (or (and (<= 0 v_main_~i~0_BEFORE_CALL_50) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_50 ~N~0) (<= 0 |#NULL.base|) (= v_main_~i~0_BEFORE_CALL_50 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_41|) (* 4 v_main_~i~0_BEFORE_CALL_50))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (<= 0 v_main_~i~0_BEFORE_CALL_50) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_50 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (not (= v_main_~i~0_BEFORE_CALL_50 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_41|) (* 4 v_main_~i~0_BEFORE_CALL_50)))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (not (= 0 __VERIFIER_assert_~cond)) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:35:59,645 INFO L193 IcfgInterpreter]: Reachable states at location L12-2 satisfy 76#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (<= 0 main_~i~0) (= 0 |#NULL.base|) (<= 0 |#NULL.base|) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (= |#valid| (store |old(#valid)| |main_~#a~0.base| 1)) (<= 0 (+ ~N~0 2147483648)) (= main_~k~0 0) (<= main_~k~0 0) (= |main_~#a~0.offset| 0) (<= ~N~0 2147483647) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= |main_~#a~0.offset| 0) (<= main_~i~0 0) (< 0 ~N~0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (= (store |old(#length)| |main_~#a~0.base| (* 4 ~N~0)) |#length|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0)) [2019-10-07 00:36:00,613 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 00:36:00,613 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12, 12] total 36 [2019-10-07 00:36:00,614 INFO L442 AbstractCegarLoop]: Interpolant automaton has 36 states [2019-10-07 00:36:00,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2019-10-07 00:36:00,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1150, Unknown=0, NotChecked=0, Total=1260 [2019-10-07 00:36:00,615 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 36 states. [2019-10-07 00:36:02,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:36:02,153 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2019-10-07 00:36:02,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-10-07 00:36:02,153 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 29 [2019-10-07 00:36:02,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:36:02,155 INFO L225 Difference]: With dead ends: 38 [2019-10-07 00:36:02,155 INFO L226 Difference]: Without dead ends: 36 [2019-10-07 00:36:02,157 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 57 SyntacticMatches, 8 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 768 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=305, Invalid=2775, Unknown=0, NotChecked=0, Total=3080 [2019-10-07 00:36:02,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-10-07 00:36:02,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2019-10-07 00:36:02,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-10-07 00:36:02,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2019-10-07 00:36:02,166 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 29 [2019-10-07 00:36:02,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:36:02,166 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2019-10-07 00:36:02,166 INFO L463 AbstractCegarLoop]: Interpolant automaton has 36 states. [2019-10-07 00:36:02,166 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2019-10-07 00:36:02,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-10-07 00:36:02,167 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:36:02,168 INFO L385 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:36:02,371 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:36:02,371 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:36:02,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:36:02,372 INFO L82 PathProgramCache]: Analyzing trace with hash 702652914, now seen corresponding path program 5 times [2019-10-07 00:36:02,372 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:36:02,372 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:36:02,373 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:36:02,373 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:36:02,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:36:02,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:36:02,482 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 14 proven. 13 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 00:36:02,482 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:36:02,482 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:36:02,482 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:36:02,558 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-10-07 00:36:02,558 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-07 00:36:02,559 INFO L256 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-07 00:36:02,562 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:36:02,634 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 00:36:02,634 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:36:02,682 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 00:36:02,683 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:36:02,684 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-07 00:36:02,684 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:36:02,685 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:36:02,685 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:36:02,685 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:36:02,708 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-07 00:36:03,077 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2019-10-07 00:36:03,090 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-10-07 00:36:03,094 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 00:36:03,095 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 00:36:03,095 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 175#(and (exists ((|v_main_~#a~0.base_BEFORE_CALL_50| Int) (v_main_~i~0_BEFORE_CALL_65 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_65) (<= 0 |#NULL.base|) (= v_main_~i~0_BEFORE_CALL_65 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_50|) (* 4 v_main_~i~0_BEFORE_CALL_65))) (= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_65 ~N~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (not (= v_main_~i~0_BEFORE_CALL_65 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_50|) (* 4 v_main_~i~0_BEFORE_CALL_65)))) (<= 0 v_main_~i~0_BEFORE_CALL_65) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_65 ~N~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:36:03,096 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 190#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_main_~#a~0.base_BEFORE_CALL_50| Int) (v_main_~i~0_BEFORE_CALL_65 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_65) (<= 0 |#NULL.base|) (= v_main_~i~0_BEFORE_CALL_65 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_50|) (* 4 v_main_~i~0_BEFORE_CALL_65))) (= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_65 ~N~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (not (= v_main_~i~0_BEFORE_CALL_65 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_50|) (* 4 v_main_~i~0_BEFORE_CALL_65)))) (<= 0 v_main_~i~0_BEFORE_CALL_65) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_65 ~N~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:36:03,096 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 199#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 00:36:03,096 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertEXIT satisfy 185#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((|v_main_~#a~0.base_BEFORE_CALL_50| Int) (v_main_~i~0_BEFORE_CALL_65 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_65) (<= 0 |#NULL.base|) (= v_main_~i~0_BEFORE_CALL_65 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_50|) (* 4 v_main_~i~0_BEFORE_CALL_65))) (= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_65 ~N~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (not (= v_main_~i~0_BEFORE_CALL_65 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_50|) (* 4 v_main_~i~0_BEFORE_CALL_65)))) (<= 0 v_main_~i~0_BEFORE_CALL_65) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_65 ~N~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:36:03,097 INFO L193 IcfgInterpreter]: Reachable states at location L18-2 satisfy 148#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:36:03,097 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:36:03,098 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (<= 0 ~N~0) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:36:03,098 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 204#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:36:03,098 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 00:36:03,099 INFO L193 IcfgInterpreter]: Reachable states at location L7 satisfy 38#(and (= 0 |#NULL.base|) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (<= 0 (+ ~N~0 2147483648)) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:36:03,099 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 195#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_main_~#a~0.base_BEFORE_CALL_50| Int) (v_main_~i~0_BEFORE_CALL_65 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_65) (<= 0 |#NULL.base|) (= v_main_~i~0_BEFORE_CALL_65 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_50|) (* 4 v_main_~i~0_BEFORE_CALL_65))) (= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_65 ~N~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (not (= v_main_~i~0_BEFORE_CALL_65 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_50|) (* 4 v_main_~i~0_BEFORE_CALL_65)))) (<= 0 v_main_~i~0_BEFORE_CALL_65) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_65 ~N~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:36:03,100 INFO L193 IcfgInterpreter]: Reachable states at location L19-1 satisfy 166#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= |main_#t~mem1| 2147483647) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (= main_~i~0 |main_#t~mem1|) (<= 0 |main_#t~mem1|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:36:03,100 INFO L193 IcfgInterpreter]: Reachable states at location L19 satisfy 153#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:36:03,100 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 170#(exists ((|v_main_~#a~0.base_BEFORE_CALL_50| Int) (v_main_~i~0_BEFORE_CALL_65 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_65) (<= 0 |#NULL.base|) (= v_main_~i~0_BEFORE_CALL_65 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_50|) (* 4 v_main_~i~0_BEFORE_CALL_65))) (= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_65 ~N~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (not (= v_main_~i~0_BEFORE_CALL_65 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_50|) (* 4 v_main_~i~0_BEFORE_CALL_65)))) (<= 0 v_main_~i~0_BEFORE_CALL_65) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_65 ~N~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-07 00:36:03,101 INFO L193 IcfgInterpreter]: Reachable states at location L2-3 satisfy 180#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((|v_main_~#a~0.base_BEFORE_CALL_50| Int) (v_main_~i~0_BEFORE_CALL_65 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_65) (<= 0 |#NULL.base|) (= v_main_~i~0_BEFORE_CALL_65 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_50|) (* 4 v_main_~i~0_BEFORE_CALL_65))) (= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_65 ~N~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (not (= v_main_~i~0_BEFORE_CALL_65 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_50|) (* 4 v_main_~i~0_BEFORE_CALL_65)))) (<= 0 v_main_~i~0_BEFORE_CALL_65) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_65 ~N~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:36:03,101 INFO L193 IcfgInterpreter]: Reachable states at location L12-2 satisfy 76#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (<= 0 main_~i~0) (= 0 |#NULL.base|) (<= 0 |#NULL.base|) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (= |#valid| (store |old(#valid)| |main_~#a~0.base| 1)) (<= 0 (+ ~N~0 2147483648)) (= main_~k~0 0) (<= main_~k~0 0) (= |main_~#a~0.offset| 0) (<= ~N~0 2147483647) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= |main_~#a~0.offset| 0) (<= main_~i~0 0) (< 0 ~N~0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (= (store |old(#length)| |main_~#a~0.base| (* 4 ~N~0)) |#length|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0)) [2019-10-07 00:36:03,865 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 00:36:03,865 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10, 12] total 29 [2019-10-07 00:36:03,866 INFO L442 AbstractCegarLoop]: Interpolant automaton has 29 states [2019-10-07 00:36:03,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2019-10-07 00:36:03,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=698, Unknown=0, NotChecked=0, Total=812 [2019-10-07 00:36:03,867 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 29 states. [2019-10-07 00:36:05,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:36:05,706 INFO L93 Difference]: Finished difference Result 65 states and 71 transitions. [2019-10-07 00:36:05,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-10-07 00:36:05,706 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 36 [2019-10-07 00:36:05,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:36:05,708 INFO L225 Difference]: With dead ends: 65 [2019-10-07 00:36:05,708 INFO L226 Difference]: Without dead ends: 38 [2019-10-07 00:36:05,710 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 80 SyntacticMatches, 10 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1147 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=495, Invalid=2927, Unknown=0, NotChecked=0, Total=3422 [2019-10-07 00:36:05,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-10-07 00:36:05,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2019-10-07 00:36:05,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-10-07 00:36:05,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2019-10-07 00:36:05,718 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 36 [2019-10-07 00:36:05,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:36:05,719 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2019-10-07 00:36:05,719 INFO L463 AbstractCegarLoop]: Interpolant automaton has 29 states. [2019-10-07 00:36:05,719 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2019-10-07 00:36:05,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-10-07 00:36:05,720 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:36:05,720 INFO L385 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:36:05,921 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:36:05,922 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:36:05,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:36:05,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1044880909, now seen corresponding path program 6 times [2019-10-07 00:36:05,923 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:36:05,923 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:36:05,924 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:36:05,924 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:36:05,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:36:05,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:36:06,082 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 00:36:06,082 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:36:06,082 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:36:06,082 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:36:06,171 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-07 00:36:06,172 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-07 00:36:06,173 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 27 conjunts are in the unsatisfiable core [2019-10-07 00:36:06,175 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:36:06,622 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 00:36:06,622 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:36:06,696 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 00:36:06,696 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:36:06,697 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-07 00:36:06,697 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:36:06,698 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:36:06,698 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:36:06,698 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:36:06,725 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 25 for LOIs [2019-10-07 00:36:07,020 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2019-10-07 00:36:07,033 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-10-07 00:36:07,037 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 00:36:07,038 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 00:36:07,038 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 175#(and (exists ((|v_main_~#a~0.base_BEFORE_CALL_65| Int) (v_main_~i~0_BEFORE_CALL_81 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_81) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_81 ~N~0) (= |#NULL.offset| 0) (= v_main_~i~0_BEFORE_CALL_81 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_65|) (* 4 v_main_~i~0_BEFORE_CALL_81))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_81) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_81 ~N~0) (= |#NULL.offset| 0) (not (= v_main_~i~0_BEFORE_CALL_81 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_65|) (* 4 v_main_~i~0_BEFORE_CALL_81)))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:36:07,038 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 190#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_main_~#a~0.base_BEFORE_CALL_65| Int) (v_main_~i~0_BEFORE_CALL_81 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_81) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_81 ~N~0) (= |#NULL.offset| 0) (= v_main_~i~0_BEFORE_CALL_81 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_65|) (* 4 v_main_~i~0_BEFORE_CALL_81))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_81) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_81 ~N~0) (= |#NULL.offset| 0) (not (= v_main_~i~0_BEFORE_CALL_81 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_65|) (* 4 v_main_~i~0_BEFORE_CALL_81)))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:36:07,038 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 199#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 00:36:07,039 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertEXIT satisfy 185#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((|v_main_~#a~0.base_BEFORE_CALL_65| Int) (v_main_~i~0_BEFORE_CALL_81 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_81) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_81 ~N~0) (= |#NULL.offset| 0) (= v_main_~i~0_BEFORE_CALL_81 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_65|) (* 4 v_main_~i~0_BEFORE_CALL_81))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_81) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_81 ~N~0) (= |#NULL.offset| 0) (not (= v_main_~i~0_BEFORE_CALL_81 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_65|) (* 4 v_main_~i~0_BEFORE_CALL_81)))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:36:07,039 INFO L193 IcfgInterpreter]: Reachable states at location L18-2 satisfy 148#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:36:07,039 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:36:07,039 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 |old(~N~0)|) (<= 0 ~N~0) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:36:07,039 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 204#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:36:07,039 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 00:36:07,040 INFO L193 IcfgInterpreter]: Reachable states at location L7 satisfy 38#(and (= 0 |#NULL.base|) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 |old(~N~0)|) (<= 0 (+ ~N~0 2147483648)) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:36:07,040 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 195#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_main_~#a~0.base_BEFORE_CALL_65| Int) (v_main_~i~0_BEFORE_CALL_81 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_81) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_81 ~N~0) (= |#NULL.offset| 0) (= v_main_~i~0_BEFORE_CALL_81 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_65|) (* 4 v_main_~i~0_BEFORE_CALL_81))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_81) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_81 ~N~0) (= |#NULL.offset| 0) (not (= v_main_~i~0_BEFORE_CALL_81 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_65|) (* 4 v_main_~i~0_BEFORE_CALL_81)))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:36:07,040 INFO L193 IcfgInterpreter]: Reachable states at location L19-1 satisfy 166#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= |main_#t~mem1| 2147483647) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (= main_~i~0 |main_#t~mem1|) (<= 0 |main_#t~mem1|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:36:07,040 INFO L193 IcfgInterpreter]: Reachable states at location L19 satisfy 153#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:36:07,040 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 170#(exists ((|v_main_~#a~0.base_BEFORE_CALL_65| Int) (v_main_~i~0_BEFORE_CALL_81 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_81) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_81 ~N~0) (= |#NULL.offset| 0) (= v_main_~i~0_BEFORE_CALL_81 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_65|) (* 4 v_main_~i~0_BEFORE_CALL_81))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_81) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_81 ~N~0) (= |#NULL.offset| 0) (not (= v_main_~i~0_BEFORE_CALL_81 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_65|) (* 4 v_main_~i~0_BEFORE_CALL_81)))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-07 00:36:07,041 INFO L193 IcfgInterpreter]: Reachable states at location L2-3 satisfy 180#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((|v_main_~#a~0.base_BEFORE_CALL_65| Int) (v_main_~i~0_BEFORE_CALL_81 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_81) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_81 ~N~0) (= |#NULL.offset| 0) (= v_main_~i~0_BEFORE_CALL_81 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_65|) (* 4 v_main_~i~0_BEFORE_CALL_81))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_81) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_81 ~N~0) (= |#NULL.offset| 0) (not (= v_main_~i~0_BEFORE_CALL_81 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_65|) (* 4 v_main_~i~0_BEFORE_CALL_81)))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:36:07,041 INFO L193 IcfgInterpreter]: Reachable states at location L12-2 satisfy 76#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (<= 0 main_~i~0) (= 0 |#NULL.base|) (<= 0 |#NULL.base|) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (= |#valid| (store |old(#valid)| |main_~#a~0.base| 1)) (<= 0 (+ ~N~0 2147483648)) (= main_~k~0 0) (<= main_~k~0 0) (= |main_~#a~0.offset| 0) (<= ~N~0 2147483647) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= |main_~#a~0.offset| 0) (<= main_~i~0 0) (< 0 ~N~0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (= (store |old(#length)| |main_~#a~0.base| (* 4 ~N~0)) |#length|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0)) [2019-10-07 00:36:08,059 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 00:36:08,059 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 14, 12] total 40 [2019-10-07 00:36:08,060 INFO L442 AbstractCegarLoop]: Interpolant automaton has 40 states [2019-10-07 00:36:08,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2019-10-07 00:36:08,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1437, Unknown=0, NotChecked=0, Total=1560 [2019-10-07 00:36:08,062 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand 40 states. [2019-10-07 00:36:10,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:36:10,179 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2019-10-07 00:36:10,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-10-07 00:36:10,179 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 37 [2019-10-07 00:36:10,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:36:10,181 INFO L225 Difference]: With dead ends: 42 [2019-10-07 00:36:10,181 INFO L226 Difference]: Without dead ends: 40 [2019-10-07 00:36:10,183 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 76 SyntacticMatches, 11 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1049 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=361, Invalid=3671, Unknown=0, NotChecked=0, Total=4032 [2019-10-07 00:36:10,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-10-07 00:36:10,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2019-10-07 00:36:10,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-10-07 00:36:10,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2019-10-07 00:36:10,193 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 37 [2019-10-07 00:36:10,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:36:10,194 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2019-10-07 00:36:10,194 INFO L463 AbstractCegarLoop]: Interpolant automaton has 40 states. [2019-10-07 00:36:10,194 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2019-10-07 00:36:10,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-10-07 00:36:10,195 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:36:10,195 INFO L385 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:36:10,398 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:36:10,399 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:36:10,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:36:10,400 INFO L82 PathProgramCache]: Analyzing trace with hash -717503778, now seen corresponding path program 7 times [2019-10-07 00:36:10,400 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:36:10,400 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:36:10,401 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:36:10,401 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:36:10,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:36:10,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:36:10,513 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 24 proven. 20 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-07 00:36:10,514 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:36:10,514 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:36:10,514 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:36:10,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:36:10,614 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-07 00:36:10,617 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:36:10,701 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-07 00:36:10,702 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:36:10,759 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-07 00:36:10,759 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:36:10,761 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-07 00:36:10,762 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:36:10,762 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:36:10,762 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:36:10,762 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:36:10,789 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-07 00:36:11,050 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2019-10-07 00:36:11,059 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-10-07 00:36:11,062 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 00:36:11,062 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 00:36:11,062 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 175#(and (exists ((|v_main_~#a~0.base_BEFORE_CALL_74| Int) (v_main_~i~0_BEFORE_CALL_98 Int)) (or (and (= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_98) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (not (= v_main_~i~0_BEFORE_CALL_98 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_74|) (* 4 v_main_~i~0_BEFORE_CALL_98)))) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_98 ~N~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_98) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= v_main_~i~0_BEFORE_CALL_98 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_74|) (* 4 v_main_~i~0_BEFORE_CALL_98))) (= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_98 ~N~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:36:11,062 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 190#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_main_~#a~0.base_BEFORE_CALL_74| Int) (v_main_~i~0_BEFORE_CALL_98 Int)) (or (and (= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_98) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (not (= v_main_~i~0_BEFORE_CALL_98 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_74|) (* 4 v_main_~i~0_BEFORE_CALL_98)))) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_98 ~N~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_98) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= v_main_~i~0_BEFORE_CALL_98 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_74|) (* 4 v_main_~i~0_BEFORE_CALL_98))) (= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_98 ~N~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:36:11,062 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 199#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 00:36:11,063 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertEXIT satisfy 185#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((|v_main_~#a~0.base_BEFORE_CALL_74| Int) (v_main_~i~0_BEFORE_CALL_98 Int)) (or (and (= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_98) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (not (= v_main_~i~0_BEFORE_CALL_98 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_74|) (* 4 v_main_~i~0_BEFORE_CALL_98)))) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_98 ~N~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_98) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= v_main_~i~0_BEFORE_CALL_98 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_74|) (* 4 v_main_~i~0_BEFORE_CALL_98))) (= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_98 ~N~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:36:11,063 INFO L193 IcfgInterpreter]: Reachable states at location L18-2 satisfy 148#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:36:11,063 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:36:11,063 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (<= 0 ~N~0) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:36:11,063 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 204#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:36:11,063 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 00:36:11,064 INFO L193 IcfgInterpreter]: Reachable states at location L7 satisfy 38#(and (= 0 |#NULL.base|) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (<= 0 (+ ~N~0 2147483648)) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:36:11,064 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 195#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_main_~#a~0.base_BEFORE_CALL_74| Int) (v_main_~i~0_BEFORE_CALL_98 Int)) (or (and (= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_98) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (not (= v_main_~i~0_BEFORE_CALL_98 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_74|) (* 4 v_main_~i~0_BEFORE_CALL_98)))) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_98 ~N~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_98) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= v_main_~i~0_BEFORE_CALL_98 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_74|) (* 4 v_main_~i~0_BEFORE_CALL_98))) (= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_98 ~N~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:36:11,064 INFO L193 IcfgInterpreter]: Reachable states at location L19-1 satisfy 166#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= |main_#t~mem1| 2147483647) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (= main_~i~0 |main_#t~mem1|) (<= 0 |main_#t~mem1|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:36:11,064 INFO L193 IcfgInterpreter]: Reachable states at location L19 satisfy 153#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:36:11,064 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 170#(exists ((|v_main_~#a~0.base_BEFORE_CALL_74| Int) (v_main_~i~0_BEFORE_CALL_98 Int)) (or (and (= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_98) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (not (= v_main_~i~0_BEFORE_CALL_98 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_74|) (* 4 v_main_~i~0_BEFORE_CALL_98)))) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_98 ~N~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_98) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= v_main_~i~0_BEFORE_CALL_98 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_74|) (* 4 v_main_~i~0_BEFORE_CALL_98))) (= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_98 ~N~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-07 00:36:11,065 INFO L193 IcfgInterpreter]: Reachable states at location L2-3 satisfy 180#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((|v_main_~#a~0.base_BEFORE_CALL_74| Int) (v_main_~i~0_BEFORE_CALL_98 Int)) (or (and (= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_98) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (not (= v_main_~i~0_BEFORE_CALL_98 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_74|) (* 4 v_main_~i~0_BEFORE_CALL_98)))) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_98 ~N~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_98) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= v_main_~i~0_BEFORE_CALL_98 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_74|) (* 4 v_main_~i~0_BEFORE_CALL_98))) (= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_98 ~N~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:36:11,065 INFO L193 IcfgInterpreter]: Reachable states at location L12-2 satisfy 76#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (<= 0 main_~i~0) (= 0 |#NULL.base|) (<= 0 |#NULL.base|) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (= |#valid| (store |old(#valid)| |main_~#a~0.base| 1)) (<= 0 (+ ~N~0 2147483648)) (= main_~k~0 0) (<= main_~k~0 0) (= |main_~#a~0.offset| 0) (<= ~N~0 2147483647) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= |main_~#a~0.offset| 0) (<= main_~i~0 0) (< 0 ~N~0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (= (store |old(#length)| |main_~#a~0.base| (* 4 ~N~0)) |#length|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0)) [2019-10-07 00:36:11,864 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 00:36:11,864 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12, 12] total 32 [2019-10-07 00:36:11,865 INFO L442 AbstractCegarLoop]: Interpolant automaton has 32 states [2019-10-07 00:36:11,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2019-10-07 00:36:11,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=852, Unknown=0, NotChecked=0, Total=992 [2019-10-07 00:36:11,866 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 32 states. [2019-10-07 00:36:14,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:36:14,034 INFO L93 Difference]: Finished difference Result 72 states and 80 transitions. [2019-10-07 00:36:14,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-10-07 00:36:14,035 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 44 [2019-10-07 00:36:14,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:36:14,036 INFO L225 Difference]: With dead ends: 72 [2019-10-07 00:36:14,037 INFO L226 Difference]: Without dead ends: 42 [2019-10-07 00:36:14,041 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 100 SyntacticMatches, 13 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1601 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=664, Invalid=3892, Unknown=0, NotChecked=0, Total=4556 [2019-10-07 00:36:14,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-10-07 00:36:14,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2019-10-07 00:36:14,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-10-07 00:36:14,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2019-10-07 00:36:14,066 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 44 [2019-10-07 00:36:14,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:36:14,066 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2019-10-07 00:36:14,066 INFO L463 AbstractCegarLoop]: Interpolant automaton has 32 states. [2019-10-07 00:36:14,067 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2019-10-07 00:36:14,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-10-07 00:36:14,071 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:36:14,072 INFO L385 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:36:14,279 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:36:14,280 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:36:14,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:36:14,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1256360967, now seen corresponding path program 8 times [2019-10-07 00:36:14,280 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:36:14,280 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:36:14,281 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:36:14,281 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:36:14,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:36:14,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:36:14,657 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 8 proven. 41 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-07 00:36:14,657 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:36:14,657 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:36:14,657 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:36:14,789 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-10-07 00:36:14,789 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-07 00:36:14,790 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 42 conjunts are in the unsatisfiable core [2019-10-07 00:36:14,794 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:36:15,473 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 9 proven. 49 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-07 00:36:15,473 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:36:15,908 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 8 proven. 41 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-07 00:36:15,908 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:36:15,909 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-07 00:36:15,910 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:36:15,910 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:36:15,910 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:36:15,910 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:36:15,935 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-07 00:36:16,215 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2019-10-07 00:36:16,226 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-10-07 00:36:16,229 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 00:36:16,230 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 00:36:16,230 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 175#(and (exists ((v_main_~i~0_BEFORE_CALL_116 Int) (|v_main_~#a~0.base_BEFORE_CALL_91| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_116 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_116) (= v_main_~i~0_BEFORE_CALL_116 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_91|) (* 4 v_main_~i~0_BEFORE_CALL_116))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (not (= v_main_~i~0_BEFORE_CALL_116 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_91|) (* 4 v_main_~i~0_BEFORE_CALL_116)))) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_116 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_116) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:36:16,230 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 190#(and (exists ((v_main_~i~0_BEFORE_CALL_116 Int) (|v_main_~#a~0.base_BEFORE_CALL_91| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_116 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_116) (= v_main_~i~0_BEFORE_CALL_116 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_91|) (* 4 v_main_~i~0_BEFORE_CALL_116))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (not (= v_main_~i~0_BEFORE_CALL_116 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_91|) (* 4 v_main_~i~0_BEFORE_CALL_116)))) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_116 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_116) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= __VERIFIER_assert_~cond 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)) [2019-10-07 00:36:16,230 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 199#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 00:36:16,230 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertEXIT satisfy 185#(and (exists ((v_main_~i~0_BEFORE_CALL_116 Int) (|v_main_~#a~0.base_BEFORE_CALL_91| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_116 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_116) (= v_main_~i~0_BEFORE_CALL_116 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_91|) (* 4 v_main_~i~0_BEFORE_CALL_116))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (not (= v_main_~i~0_BEFORE_CALL_116 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_91|) (* 4 v_main_~i~0_BEFORE_CALL_116)))) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_116 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_116) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (not (= 0 __VERIFIER_assert_~cond)) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:36:16,232 INFO L193 IcfgInterpreter]: Reachable states at location L18-2 satisfy 148#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:36:16,232 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:36:16,232 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (<= 0 ~N~0) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#memory_int| |old(#memory_int)|) (<= |old(~N~0)| 0) (<= 0 |old(~N~0)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:36:16,233 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 204#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:36:16,233 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 00:36:16,233 INFO L193 IcfgInterpreter]: Reachable states at location L7 satisfy 38#(and (= 0 |#NULL.base|) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (<= 0 (+ ~N~0 2147483648)) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (<= |old(~N~0)| 0) (<= 0 |old(~N~0)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:36:16,233 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 195#(and (exists ((v_main_~i~0_BEFORE_CALL_116 Int) (|v_main_~#a~0.base_BEFORE_CALL_91| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_116 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_116) (= v_main_~i~0_BEFORE_CALL_116 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_91|) (* 4 v_main_~i~0_BEFORE_CALL_116))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (not (= v_main_~i~0_BEFORE_CALL_116 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_91|) (* 4 v_main_~i~0_BEFORE_CALL_116)))) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_116 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_116) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= __VERIFIER_assert_~cond 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)) [2019-10-07 00:36:16,233 INFO L193 IcfgInterpreter]: Reachable states at location L19-1 satisfy 166#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= |main_#t~mem1| 2147483647) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (= main_~i~0 |main_#t~mem1|) (<= 0 |main_#t~mem1|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:36:16,233 INFO L193 IcfgInterpreter]: Reachable states at location L19 satisfy 153#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:36:16,233 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 170#(exists ((v_main_~i~0_BEFORE_CALL_116 Int) (|v_main_~#a~0.base_BEFORE_CALL_91| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_116 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_116) (= v_main_~i~0_BEFORE_CALL_116 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_91|) (* 4 v_main_~i~0_BEFORE_CALL_116))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (not (= v_main_~i~0_BEFORE_CALL_116 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_91|) (* 4 v_main_~i~0_BEFORE_CALL_116)))) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_116 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_116) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-07 00:36:16,234 INFO L193 IcfgInterpreter]: Reachable states at location L2-3 satisfy 180#(and (exists ((v_main_~i~0_BEFORE_CALL_116 Int) (|v_main_~#a~0.base_BEFORE_CALL_91| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_116 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_116) (= v_main_~i~0_BEFORE_CALL_116 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_91|) (* 4 v_main_~i~0_BEFORE_CALL_116))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (not (= v_main_~i~0_BEFORE_CALL_116 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_91|) (* 4 v_main_~i~0_BEFORE_CALL_116)))) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_116 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_116) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (not (= 0 __VERIFIER_assert_~cond)) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:36:16,234 INFO L193 IcfgInterpreter]: Reachable states at location L12-2 satisfy 76#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (<= 0 main_~i~0) (= 0 |#NULL.base|) (<= 0 |#NULL.base|) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (= |#valid| (store |old(#valid)| |main_~#a~0.base| 1)) (<= 0 (+ ~N~0 2147483648)) (= main_~k~0 0) (<= main_~k~0 0) (= |main_~#a~0.offset| 0) (<= ~N~0 2147483647) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= |main_~#a~0.offset| 0) (<= main_~i~0 0) (< 0 ~N~0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (= (store |old(#length)| |main_~#a~0.base| (* 4 ~N~0)) |#length|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0)) [2019-10-07 00:36:17,601 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 00:36:17,601 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 19, 16, 12] total 56 [2019-10-07 00:36:17,602 INFO L442 AbstractCegarLoop]: Interpolant automaton has 56 states [2019-10-07 00:36:17,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2019-10-07 00:36:17,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=2866, Unknown=0, NotChecked=0, Total=3080 [2019-10-07 00:36:17,604 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 56 states. [2019-10-07 00:36:22,740 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 58 [2019-10-07 00:36:22,921 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2019-10-07 00:36:23,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:36:23,225 INFO L93 Difference]: Finished difference Result 74 states and 85 transitions. [2019-10-07 00:36:23,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2019-10-07 00:36:23,226 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 45 [2019-10-07 00:36:23,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:36:23,229 INFO L225 Difference]: With dead ends: 74 [2019-10-07 00:36:23,229 INFO L226 Difference]: Without dead ends: 44 [2019-10-07 00:36:23,232 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 85 SyntacticMatches, 12 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2394 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=931, Invalid=9781, Unknown=0, NotChecked=0, Total=10712 [2019-10-07 00:36:23,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-10-07 00:36:23,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2019-10-07 00:36:23,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-10-07 00:36:23,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2019-10-07 00:36:23,243 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 45 [2019-10-07 00:36:23,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:36:23,244 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2019-10-07 00:36:23,244 INFO L463 AbstractCegarLoop]: Interpolant automaton has 56 states. [2019-10-07 00:36:23,244 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2019-10-07 00:36:23,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-07 00:36:23,245 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:36:23,245 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:36:23,448 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:36:23,449 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:36:23,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:36:23,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1971982733, now seen corresponding path program 9 times [2019-10-07 00:36:23,450 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:36:23,450 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:36:23,450 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:36:23,451 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:36:23,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:36:23,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:36:23,686 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 10 proven. 61 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-07 00:36:23,689 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:36:23,689 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:36:23,690 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:36:23,819 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-07 00:36:23,819 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-07 00:36:23,821 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 35 conjunts are in the unsatisfiable core [2019-10-07 00:36:23,823 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:36:24,779 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 71 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-07 00:36:24,780 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:36:24,847 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 10 proven. 61 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-07 00:36:24,847 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:36:24,848 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-07 00:36:24,848 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:36:24,849 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:36:24,849 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:36:24,849 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:36:24,868 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-07 00:36:25,103 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2019-10-07 00:36:25,111 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-10-07 00:36:25,115 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 00:36:25,115 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 00:36:25,115 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 175#(and (exists ((v_main_~i~0_BEFORE_CALL_136 Int) (|v_main_~#a~0.base_BEFORE_CALL_110| Int)) (or (and (= |#NULL.base| 0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_110|) (* 4 v_main_~i~0_BEFORE_CALL_136)) v_main_~i~0_BEFORE_CALL_136) (< v_main_~i~0_BEFORE_CALL_136 ~N~0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_136) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_136 ~N~0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_136) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_110|) (* 4 v_main_~i~0_BEFORE_CALL_136)) v_main_~i~0_BEFORE_CALL_136)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:36:25,115 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 190#(and (exists ((v_main_~i~0_BEFORE_CALL_136 Int) (|v_main_~#a~0.base_BEFORE_CALL_110| Int)) (or (and (= |#NULL.base| 0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_110|) (* 4 v_main_~i~0_BEFORE_CALL_136)) v_main_~i~0_BEFORE_CALL_136) (< v_main_~i~0_BEFORE_CALL_136 ~N~0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_136) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_136 ~N~0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_136) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_110|) (* 4 v_main_~i~0_BEFORE_CALL_136)) v_main_~i~0_BEFORE_CALL_136)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= __VERIFIER_assert_~cond 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)) [2019-10-07 00:36:25,115 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 199#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 00:36:25,116 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertEXIT satisfy 185#(and (exists ((v_main_~i~0_BEFORE_CALL_136 Int) (|v_main_~#a~0.base_BEFORE_CALL_110| Int)) (or (and (= |#NULL.base| 0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_110|) (* 4 v_main_~i~0_BEFORE_CALL_136)) v_main_~i~0_BEFORE_CALL_136) (< v_main_~i~0_BEFORE_CALL_136 ~N~0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_136) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_136 ~N~0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_136) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_110|) (* 4 v_main_~i~0_BEFORE_CALL_136)) v_main_~i~0_BEFORE_CALL_136)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (not (= 0 __VERIFIER_assert_~cond)) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:36:25,116 INFO L193 IcfgInterpreter]: Reachable states at location L18-2 satisfy 148#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:36:25,116 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:36:25,116 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (<= 0 ~N~0) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#memory_int| |old(#memory_int)|) (<= |old(~N~0)| 0) (<= 0 |old(~N~0)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:36:25,116 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 204#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:36:25,116 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 00:36:25,116 INFO L193 IcfgInterpreter]: Reachable states at location L7 satisfy 38#(and (= 0 |#NULL.base|) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (<= 0 (+ ~N~0 2147483648)) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (<= |old(~N~0)| 0) (<= 0 |old(~N~0)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:36:25,116 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 195#(and (exists ((v_main_~i~0_BEFORE_CALL_136 Int) (|v_main_~#a~0.base_BEFORE_CALL_110| Int)) (or (and (= |#NULL.base| 0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_110|) (* 4 v_main_~i~0_BEFORE_CALL_136)) v_main_~i~0_BEFORE_CALL_136) (< v_main_~i~0_BEFORE_CALL_136 ~N~0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_136) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_136 ~N~0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_136) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_110|) (* 4 v_main_~i~0_BEFORE_CALL_136)) v_main_~i~0_BEFORE_CALL_136)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= __VERIFIER_assert_~cond 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)) [2019-10-07 00:36:25,117 INFO L193 IcfgInterpreter]: Reachable states at location L19-1 satisfy 166#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= |main_#t~mem1| 2147483647) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (= main_~i~0 |main_#t~mem1|) (<= 0 |main_#t~mem1|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:36:25,117 INFO L193 IcfgInterpreter]: Reachable states at location L19 satisfy 153#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:36:25,117 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 170#(exists ((v_main_~i~0_BEFORE_CALL_136 Int) (|v_main_~#a~0.base_BEFORE_CALL_110| Int)) (or (and (= |#NULL.base| 0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_110|) (* 4 v_main_~i~0_BEFORE_CALL_136)) v_main_~i~0_BEFORE_CALL_136) (< v_main_~i~0_BEFORE_CALL_136 ~N~0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_136) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_136 ~N~0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_136) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_110|) (* 4 v_main_~i~0_BEFORE_CALL_136)) v_main_~i~0_BEFORE_CALL_136)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-07 00:36:25,117 INFO L193 IcfgInterpreter]: Reachable states at location L2-3 satisfy 180#(and (exists ((v_main_~i~0_BEFORE_CALL_136 Int) (|v_main_~#a~0.base_BEFORE_CALL_110| Int)) (or (and (= |#NULL.base| 0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_110|) (* 4 v_main_~i~0_BEFORE_CALL_136)) v_main_~i~0_BEFORE_CALL_136) (< v_main_~i~0_BEFORE_CALL_136 ~N~0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_136) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_136 ~N~0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_136) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_110|) (* 4 v_main_~i~0_BEFORE_CALL_136)) v_main_~i~0_BEFORE_CALL_136)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (not (= 0 __VERIFIER_assert_~cond)) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:36:25,117 INFO L193 IcfgInterpreter]: Reachable states at location L12-2 satisfy 76#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (<= 0 main_~i~0) (= 0 |#NULL.base|) (<= 0 |#NULL.base|) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (= |#valid| (store |old(#valid)| |main_~#a~0.base| 1)) (<= 0 (+ ~N~0 2147483648)) (= main_~k~0 0) (<= main_~k~0 0) (= |main_~#a~0.offset| 0) (<= ~N~0 2147483647) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= |main_~#a~0.offset| 0) (<= main_~i~0 0) (< 0 ~N~0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (= (store |old(#length)| |main_~#a~0.base| (* 4 ~N~0)) |#length|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0)) [2019-10-07 00:36:26,355 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 00:36:26,355 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 18, 12] total 48 [2019-10-07 00:36:26,356 INFO L442 AbstractCegarLoop]: Interpolant automaton has 48 states [2019-10-07 00:36:26,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2019-10-07 00:36:26,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=2107, Unknown=0, NotChecked=0, Total=2256 [2019-10-07 00:36:26,357 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand 48 states. [2019-10-07 00:36:29,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:36:29,409 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2019-10-07 00:36:29,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2019-10-07 00:36:29,409 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 53 [2019-10-07 00:36:29,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:36:29,410 INFO L225 Difference]: With dead ends: 50 [2019-10-07 00:36:29,410 INFO L226 Difference]: Without dead ends: 48 [2019-10-07 00:36:29,412 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 114 SyntacticMatches, 17 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1752 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=473, Invalid=5847, Unknown=0, NotChecked=0, Total=6320 [2019-10-07 00:36:29,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-10-07 00:36:29,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2019-10-07 00:36:29,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-10-07 00:36:29,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2019-10-07 00:36:29,425 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 53 [2019-10-07 00:36:29,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:36:29,426 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2019-10-07 00:36:29,426 INFO L463 AbstractCegarLoop]: Interpolant automaton has 48 states. [2019-10-07 00:36:29,426 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2019-10-07 00:36:29,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-10-07 00:36:29,427 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:36:29,427 INFO L385 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:36:29,630 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:36:29,631 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:36:29,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:36:29,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1735941982, now seen corresponding path program 10 times [2019-10-07 00:36:29,632 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:36:29,633 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:36:29,633 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:36:29,633 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:36:29,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:36:29,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:36:29,778 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 53 proven. 37 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-10-07 00:36:29,778 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:36:29,778 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:36:29,778 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:36:29,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:36:29,928 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 16 conjunts are in the unsatisfiable core [2019-10-07 00:36:29,930 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:36:30,081 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 69 proven. 21 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-10-07 00:36:30,082 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:36:30,173 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 69 proven. 21 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-10-07 00:36:30,173 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:36:30,174 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-07 00:36:30,174 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:36:30,175 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:36:30,175 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:36:30,175 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:36:30,194 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-07 00:36:30,501 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2019-10-07 00:36:30,513 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-10-07 00:36:30,517 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 00:36:30,518 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 00:36:30,518 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 175#(and (exists ((|v_main_~#a~0.base_BEFORE_CALL_119| Int) (v_main_~i~0_BEFORE_CALL_157 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_157 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_157) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= v_main_~i~0_BEFORE_CALL_157 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_119|) (* 4 v_main_~i~0_BEFORE_CALL_157)))) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (not (= v_main_~i~0_BEFORE_CALL_157 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_119|) (* 4 v_main_~i~0_BEFORE_CALL_157)))) (< v_main_~i~0_BEFORE_CALL_157 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_157) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:36:30,518 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 190#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_main_~#a~0.base_BEFORE_CALL_119| Int) (v_main_~i~0_BEFORE_CALL_157 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_157 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_157) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= v_main_~i~0_BEFORE_CALL_157 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_119|) (* 4 v_main_~i~0_BEFORE_CALL_157)))) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (not (= v_main_~i~0_BEFORE_CALL_157 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_119|) (* 4 v_main_~i~0_BEFORE_CALL_157)))) (< v_main_~i~0_BEFORE_CALL_157 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_157) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:36:30,519 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 199#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 00:36:30,519 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertEXIT satisfy 185#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((|v_main_~#a~0.base_BEFORE_CALL_119| Int) (v_main_~i~0_BEFORE_CALL_157 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_157 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_157) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= v_main_~i~0_BEFORE_CALL_157 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_119|) (* 4 v_main_~i~0_BEFORE_CALL_157)))) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (not (= v_main_~i~0_BEFORE_CALL_157 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_119|) (* 4 v_main_~i~0_BEFORE_CALL_157)))) (< v_main_~i~0_BEFORE_CALL_157 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_157) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:36:30,520 INFO L193 IcfgInterpreter]: Reachable states at location L18-2 satisfy 148#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:36:30,520 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:36:30,520 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 |old(~N~0)|) (<= 0 ~N~0) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#memory_int| |old(#memory_int)|) (<= |old(~N~0)| 0) (<= 0 |old(~N~0)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:36:30,521 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 204#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:36:30,521 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 00:36:30,521 INFO L193 IcfgInterpreter]: Reachable states at location L7 satisfy 38#(and (= 0 |#NULL.base|) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 |old(~N~0)|) (<= 0 (+ ~N~0 2147483648)) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (<= |old(~N~0)| 0) (<= 0 |old(~N~0)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:36:30,522 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 195#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_main_~#a~0.base_BEFORE_CALL_119| Int) (v_main_~i~0_BEFORE_CALL_157 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_157 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_157) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= v_main_~i~0_BEFORE_CALL_157 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_119|) (* 4 v_main_~i~0_BEFORE_CALL_157)))) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (not (= v_main_~i~0_BEFORE_CALL_157 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_119|) (* 4 v_main_~i~0_BEFORE_CALL_157)))) (< v_main_~i~0_BEFORE_CALL_157 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_157) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:36:30,522 INFO L193 IcfgInterpreter]: Reachable states at location L19-1 satisfy 166#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= |main_#t~mem1| 2147483647) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (= main_~i~0 |main_#t~mem1|) (<= 0 |main_#t~mem1|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:36:30,523 INFO L193 IcfgInterpreter]: Reachable states at location L19 satisfy 153#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:36:30,523 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 170#(exists ((|v_main_~#a~0.base_BEFORE_CALL_119| Int) (v_main_~i~0_BEFORE_CALL_157 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_157 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_157) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= v_main_~i~0_BEFORE_CALL_157 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_119|) (* 4 v_main_~i~0_BEFORE_CALL_157)))) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (not (= v_main_~i~0_BEFORE_CALL_157 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_119|) (* 4 v_main_~i~0_BEFORE_CALL_157)))) (< v_main_~i~0_BEFORE_CALL_157 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_157) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-07 00:36:30,523 INFO L193 IcfgInterpreter]: Reachable states at location L2-3 satisfy 180#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((|v_main_~#a~0.base_BEFORE_CALL_119| Int) (v_main_~i~0_BEFORE_CALL_157 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_157 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_157) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= v_main_~i~0_BEFORE_CALL_157 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_119|) (* 4 v_main_~i~0_BEFORE_CALL_157)))) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (not (= v_main_~i~0_BEFORE_CALL_157 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_119|) (* 4 v_main_~i~0_BEFORE_CALL_157)))) (< v_main_~i~0_BEFORE_CALL_157 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_157) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:36:30,523 INFO L193 IcfgInterpreter]: Reachable states at location L12-2 satisfy 76#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (<= 0 main_~i~0) (= 0 |#NULL.base|) (<= 0 |#NULL.base|) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (<= 0 |#NULL.offset|) (= |#valid| (store |old(#valid)| |main_~#a~0.base| 1)) (<= 0 (+ ~N~0 2147483648)) (= main_~k~0 0) (<= main_~k~0 0) (= |main_~#a~0.offset| 0) (<= ~N~0 2147483647) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= |main_~#a~0.offset| 0) (<= main_~i~0 0) (< 0 ~N~0) (= 0 (select |old(#valid)| 0)) (<= |#NULL.offset| 0) (= 0 |old(~N~0)|) (<= 0 ~N~0) (= (store |old(#length)| |main_~#a~0.base| (* 4 ~N~0)) |#length|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0)) [2019-10-07 00:36:31,566 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 00:36:31,567 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 16, 12] total 38 [2019-10-07 00:36:31,567 INFO L442 AbstractCegarLoop]: Interpolant automaton has 38 states [2019-10-07 00:36:31,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2019-10-07 00:36:31,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1202, Unknown=0, NotChecked=0, Total=1406 [2019-10-07 00:36:31,568 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand 38 states. [2019-10-07 00:36:34,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:36:34,567 INFO L93 Difference]: Finished difference Result 86 states and 98 transitions. [2019-10-07 00:36:34,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2019-10-07 00:36:34,568 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 60 [2019-10-07 00:36:34,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:36:34,569 INFO L225 Difference]: With dead ends: 86 [2019-10-07 00:36:34,569 INFO L226 Difference]: Without dead ends: 50 [2019-10-07 00:36:34,573 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 140 SyntacticMatches, 19 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2725 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1086, Invalid=6224, Unknown=0, NotChecked=0, Total=7310 [2019-10-07 00:36:34,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-10-07 00:36:34,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2019-10-07 00:36:34,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-10-07 00:36:34,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2019-10-07 00:36:34,585 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 60 [2019-10-07 00:36:34,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:36:34,585 INFO L462 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2019-10-07 00:36:34,585 INFO L463 AbstractCegarLoop]: Interpolant automaton has 38 states. [2019-10-07 00:36:34,585 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2019-10-07 00:36:34,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-10-07 00:36:34,586 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:36:34,587 INFO L385 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:36:34,788 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:36:34,789 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:36:34,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:36:34,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1505917561, now seen corresponding path program 11 times [2019-10-07 00:36:34,791 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:36:34,791 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:36:34,791 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:36:34,791 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:36:34,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:36:34,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:36:35,126 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 12 proven. 85 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-10-07 00:36:35,126 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:36:35,126 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:36:35,127 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:36:35,306 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2019-10-07 00:36:35,307 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-07 00:36:35,308 INFO L256 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 42 conjunts are in the unsatisfiable core [2019-10-07 00:36:35,310 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:36:35,948 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 15 proven. 97 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-10-07 00:36:35,949 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:36:36,035 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 12 proven. 85 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-10-07 00:36:36,035 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:36:36,037 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-07 00:36:36,037 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:36:36,037 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:36:36,037 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:36:36,038 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:36:36,062 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 25 for LOIs [2019-10-07 00:36:36,310 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2019-10-07 00:36:36,320 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-10-07 00:36:36,324 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 00:36:36,325 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 00:36:36,325 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 175#(and (exists ((|v_main_~#a~0.base_BEFORE_CALL_140| Int) (v_main_~i~0_BEFORE_CALL_179 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_140|) (* 4 v_main_~i~0_BEFORE_CALL_179)) v_main_~i~0_BEFORE_CALL_179) (< v_main_~i~0_BEFORE_CALL_179 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_179) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (< v_main_~i~0_BEFORE_CALL_179 ~N~0) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_140|) (* 4 v_main_~i~0_BEFORE_CALL_179)) v_main_~i~0_BEFORE_CALL_179)) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_179) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:36:36,325 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 190#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_main_~#a~0.base_BEFORE_CALL_140| Int) (v_main_~i~0_BEFORE_CALL_179 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_140|) (* 4 v_main_~i~0_BEFORE_CALL_179)) v_main_~i~0_BEFORE_CALL_179) (< v_main_~i~0_BEFORE_CALL_179 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_179) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (< v_main_~i~0_BEFORE_CALL_179 ~N~0) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_140|) (* 4 v_main_~i~0_BEFORE_CALL_179)) v_main_~i~0_BEFORE_CALL_179)) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_179) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:36:36,325 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 199#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 00:36:36,326 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertEXIT satisfy 185#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((|v_main_~#a~0.base_BEFORE_CALL_140| Int) (v_main_~i~0_BEFORE_CALL_179 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_140|) (* 4 v_main_~i~0_BEFORE_CALL_179)) v_main_~i~0_BEFORE_CALL_179) (< v_main_~i~0_BEFORE_CALL_179 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_179) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (< v_main_~i~0_BEFORE_CALL_179 ~N~0) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_140|) (* 4 v_main_~i~0_BEFORE_CALL_179)) v_main_~i~0_BEFORE_CALL_179)) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_179) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:36:36,326 INFO L193 IcfgInterpreter]: Reachable states at location L18-2 satisfy 148#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:36:36,326 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:36:36,326 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (<= 0 ~N~0) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:36:36,326 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 204#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:36:36,327 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 00:36:36,327 INFO L193 IcfgInterpreter]: Reachable states at location L7 satisfy 38#(and (= 0 |#NULL.base|) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (<= 0 (+ ~N~0 2147483648)) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:36:36,327 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 195#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_main_~#a~0.base_BEFORE_CALL_140| Int) (v_main_~i~0_BEFORE_CALL_179 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_140|) (* 4 v_main_~i~0_BEFORE_CALL_179)) v_main_~i~0_BEFORE_CALL_179) (< v_main_~i~0_BEFORE_CALL_179 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_179) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (< v_main_~i~0_BEFORE_CALL_179 ~N~0) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_140|) (* 4 v_main_~i~0_BEFORE_CALL_179)) v_main_~i~0_BEFORE_CALL_179)) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_179) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:36:36,328 INFO L193 IcfgInterpreter]: Reachable states at location L19-1 satisfy 166#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= |main_#t~mem1| 2147483647) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (= main_~i~0 |main_#t~mem1|) (<= 0 |main_#t~mem1|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:36:36,328 INFO L193 IcfgInterpreter]: Reachable states at location L19 satisfy 153#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:36:36,328 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 170#(exists ((|v_main_~#a~0.base_BEFORE_CALL_140| Int) (v_main_~i~0_BEFORE_CALL_179 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_140|) (* 4 v_main_~i~0_BEFORE_CALL_179)) v_main_~i~0_BEFORE_CALL_179) (< v_main_~i~0_BEFORE_CALL_179 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_179) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (< v_main_~i~0_BEFORE_CALL_179 ~N~0) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_140|) (* 4 v_main_~i~0_BEFORE_CALL_179)) v_main_~i~0_BEFORE_CALL_179)) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_179) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-07 00:36:36,329 INFO L193 IcfgInterpreter]: Reachable states at location L2-3 satisfy 180#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((|v_main_~#a~0.base_BEFORE_CALL_140| Int) (v_main_~i~0_BEFORE_CALL_179 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_140|) (* 4 v_main_~i~0_BEFORE_CALL_179)) v_main_~i~0_BEFORE_CALL_179) (< v_main_~i~0_BEFORE_CALL_179 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_179) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (< v_main_~i~0_BEFORE_CALL_179 ~N~0) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_140|) (* 4 v_main_~i~0_BEFORE_CALL_179)) v_main_~i~0_BEFORE_CALL_179)) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_179) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:36:36,329 INFO L193 IcfgInterpreter]: Reachable states at location L12-2 satisfy 76#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (<= 0 main_~i~0) (= 0 |#NULL.base|) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (= |#valid| (store |old(#valid)| |main_~#a~0.base| 1)) (<= 0 (+ ~N~0 2147483648)) (= main_~k~0 0) (<= main_~k~0 0) (= |main_~#a~0.offset| 0) (<= ~N~0 2147483647) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= main_~i~0 0) (< 0 ~N~0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (= (store |old(#length)| |main_~#a~0.base| (* 4 ~N~0)) |#length|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0)) [2019-10-07 00:36:37,664 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 00:36:37,664 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 23, 20, 12] total 45 [2019-10-07 00:36:37,665 INFO L442 AbstractCegarLoop]: Interpolant automaton has 45 states [2019-10-07 00:36:37,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2019-10-07 00:36:37,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1847, Unknown=0, NotChecked=0, Total=1980 [2019-10-07 00:36:37,666 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand 45 states. [2019-10-07 00:36:41,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:36:41,212 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2019-10-07 00:36:41,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-10-07 00:36:41,212 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 61 [2019-10-07 00:36:41,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:36:41,213 INFO L225 Difference]: With dead ends: 54 [2019-10-07 00:36:41,214 INFO L226 Difference]: Without dead ends: 52 [2019-10-07 00:36:41,214 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 138 SyntacticMatches, 22 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1581 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=472, Invalid=6008, Unknown=0, NotChecked=0, Total=6480 [2019-10-07 00:36:41,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-10-07 00:36:41,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2019-10-07 00:36:41,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2019-10-07 00:36:41,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2019-10-07 00:36:41,225 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 61 [2019-10-07 00:36:41,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:36:41,225 INFO L462 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2019-10-07 00:36:41,225 INFO L463 AbstractCegarLoop]: Interpolant automaton has 45 states. [2019-10-07 00:36:41,226 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2019-10-07 00:36:41,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-10-07 00:36:41,227 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:36:41,227 INFO L385 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:36:41,431 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:36:41,432 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:36:41,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:36:41,433 INFO L82 PathProgramCache]: Analyzing trace with hash 303060210, now seen corresponding path program 12 times [2019-10-07 00:36:41,433 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:36:41,433 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:36:41,434 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:36:41,434 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:36:41,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:36:41,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:36:41,593 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 72 proven. 47 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-10-07 00:36:41,593 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:36:41,593 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:36:41,593 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:36:41,756 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-07 00:36:41,756 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-07 00:36:41,757 INFO L256 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 18 conjunts are in the unsatisfiable core [2019-10-07 00:36:41,760 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:36:41,923 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 91 proven. 28 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-10-07 00:36:41,924 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:36:42,040 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 91 proven. 28 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-10-07 00:36:42,041 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:36:42,042 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-07 00:36:42,042 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:36:42,042 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:36:42,043 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:36:42,043 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:36:42,058 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-07 00:36:42,297 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2019-10-07 00:36:42,305 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-10-07 00:36:42,308 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 00:36:42,308 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 00:36:42,309 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 175#(and (exists ((|v_main_~#a~0.base_BEFORE_CALL_149| Int) (v_main_~i~0_BEFORE_CALL_202 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (< v_main_~i~0_BEFORE_CALL_202 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_149|) (* 4 v_main_~i~0_BEFORE_CALL_202)) v_main_~i~0_BEFORE_CALL_202)) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_202) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (< v_main_~i~0_BEFORE_CALL_202 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_149|) (* 4 v_main_~i~0_BEFORE_CALL_202)) v_main_~i~0_BEFORE_CALL_202) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_202) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:36:42,309 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 190#(and (exists ((|v_main_~#a~0.base_BEFORE_CALL_149| Int) (v_main_~i~0_BEFORE_CALL_202 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (< v_main_~i~0_BEFORE_CALL_202 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_149|) (* 4 v_main_~i~0_BEFORE_CALL_202)) v_main_~i~0_BEFORE_CALL_202)) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_202) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (< v_main_~i~0_BEFORE_CALL_202 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_149|) (* 4 v_main_~i~0_BEFORE_CALL_202)) v_main_~i~0_BEFORE_CALL_202) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_202) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= __VERIFIER_assert_~cond 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)) [2019-10-07 00:36:42,309 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 199#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 00:36:42,310 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertEXIT satisfy 185#(and (exists ((|v_main_~#a~0.base_BEFORE_CALL_149| Int) (v_main_~i~0_BEFORE_CALL_202 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (< v_main_~i~0_BEFORE_CALL_202 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_149|) (* 4 v_main_~i~0_BEFORE_CALL_202)) v_main_~i~0_BEFORE_CALL_202)) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_202) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (< v_main_~i~0_BEFORE_CALL_202 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_149|) (* 4 v_main_~i~0_BEFORE_CALL_202)) v_main_~i~0_BEFORE_CALL_202) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_202) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (not (= 0 __VERIFIER_assert_~cond)) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:36:42,310 INFO L193 IcfgInterpreter]: Reachable states at location L18-2 satisfy 148#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:36:42,310 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:36:42,310 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 |old(~N~0)|) (<= 0 ~N~0) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#memory_int| |old(#memory_int)|) (<= |old(~N~0)| 0) (<= 0 |old(~N~0)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:36:42,310 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 204#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:36:42,310 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 00:36:42,311 INFO L193 IcfgInterpreter]: Reachable states at location L7 satisfy 38#(and (= 0 |#NULL.base|) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 |old(~N~0)|) (<= 0 (+ ~N~0 2147483648)) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (<= |old(~N~0)| 0) (<= 0 |old(~N~0)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:36:42,311 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 195#(and (exists ((|v_main_~#a~0.base_BEFORE_CALL_149| Int) (v_main_~i~0_BEFORE_CALL_202 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (< v_main_~i~0_BEFORE_CALL_202 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_149|) (* 4 v_main_~i~0_BEFORE_CALL_202)) v_main_~i~0_BEFORE_CALL_202)) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_202) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (< v_main_~i~0_BEFORE_CALL_202 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_149|) (* 4 v_main_~i~0_BEFORE_CALL_202)) v_main_~i~0_BEFORE_CALL_202) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_202) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= __VERIFIER_assert_~cond 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)) [2019-10-07 00:36:42,311 INFO L193 IcfgInterpreter]: Reachable states at location L19-1 satisfy 166#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= |main_#t~mem1| 2147483647) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (= main_~i~0 |main_#t~mem1|) (<= 0 |main_#t~mem1|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:36:42,311 INFO L193 IcfgInterpreter]: Reachable states at location L19 satisfy 153#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:36:42,311 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 170#(exists ((|v_main_~#a~0.base_BEFORE_CALL_149| Int) (v_main_~i~0_BEFORE_CALL_202 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (< v_main_~i~0_BEFORE_CALL_202 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_149|) (* 4 v_main_~i~0_BEFORE_CALL_202)) v_main_~i~0_BEFORE_CALL_202)) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_202) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (< v_main_~i~0_BEFORE_CALL_202 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_149|) (* 4 v_main_~i~0_BEFORE_CALL_202)) v_main_~i~0_BEFORE_CALL_202) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_202) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-07 00:36:42,312 INFO L193 IcfgInterpreter]: Reachable states at location L2-3 satisfy 180#(and (exists ((|v_main_~#a~0.base_BEFORE_CALL_149| Int) (v_main_~i~0_BEFORE_CALL_202 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (< v_main_~i~0_BEFORE_CALL_202 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_149|) (* 4 v_main_~i~0_BEFORE_CALL_202)) v_main_~i~0_BEFORE_CALL_202)) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_202) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (< v_main_~i~0_BEFORE_CALL_202 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_149|) (* 4 v_main_~i~0_BEFORE_CALL_202)) v_main_~i~0_BEFORE_CALL_202) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_202) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (not (= 0 __VERIFIER_assert_~cond)) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:36:42,312 INFO L193 IcfgInterpreter]: Reachable states at location L12-2 satisfy 76#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (<= 0 main_~i~0) (= 0 |#NULL.base|) (<= 0 |#NULL.base|) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (<= 0 |#NULL.offset|) (= |#valid| (store |old(#valid)| |main_~#a~0.base| 1)) (<= 0 (+ ~N~0 2147483648)) (= main_~k~0 0) (<= main_~k~0 0) (= |main_~#a~0.offset| 0) (<= ~N~0 2147483647) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= |main_~#a~0.offset| 0) (<= main_~i~0 0) (< 0 ~N~0) (= 0 (select |old(#valid)| 0)) (<= |#NULL.offset| 0) (= 0 |old(~N~0)|) (<= 0 ~N~0) (= (store |old(#length)| |main_~#a~0.base| (* 4 ~N~0)) |#length|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0)) [2019-10-07 00:36:43,271 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 00:36:43,272 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 18, 12] total 41 [2019-10-07 00:36:43,272 INFO L442 AbstractCegarLoop]: Interpolant automaton has 41 states [2019-10-07 00:36:43,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2019-10-07 00:36:43,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=1398, Unknown=0, NotChecked=0, Total=1640 [2019-10-07 00:36:43,273 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand 41 states. [2019-10-07 00:36:46,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:36:46,666 INFO L93 Difference]: Finished difference Result 93 states and 107 transitions. [2019-10-07 00:36:46,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2019-10-07 00:36:46,666 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 68 [2019-10-07 00:36:46,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:36:46,668 INFO L225 Difference]: With dead ends: 93 [2019-10-07 00:36:46,668 INFO L226 Difference]: Without dead ends: 54 [2019-10-07 00:36:46,670 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 160 SyntacticMatches, 22 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3395 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1339, Invalid=7591, Unknown=0, NotChecked=0, Total=8930 [2019-10-07 00:36:46,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-10-07 00:36:46,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2019-10-07 00:36:46,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-10-07 00:36:46,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2019-10-07 00:36:46,683 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 68 [2019-10-07 00:36:46,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:36:46,684 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2019-10-07 00:36:46,684 INFO L463 AbstractCegarLoop]: Interpolant automaton has 41 states. [2019-10-07 00:36:46,684 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2019-10-07 00:36:46,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-10-07 00:36:46,685 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:36:46,685 INFO L385 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:36:46,887 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:36:46,887 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:36:46,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:36:46,888 INFO L82 PathProgramCache]: Analyzing trace with hash -179886835, now seen corresponding path program 13 times [2019-10-07 00:36:46,888 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:36:46,888 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:36:46,888 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:36:46,889 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:36:46,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:36:46,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:36:47,238 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 14 proven. 113 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-10-07 00:36:47,238 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:36:47,239 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:36:47,239 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:36:47,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:36:47,420 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 43 conjunts are in the unsatisfiable core [2019-10-07 00:36:47,422 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:36:48,500 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 127 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-10-07 00:36:48,500 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:36:48,576 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 14 proven. 113 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-10-07 00:36:48,576 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:36:48,577 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-07 00:36:48,578 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:36:48,578 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:36:48,578 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:36:48,578 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:36:48,595 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-07 00:36:48,835 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2019-10-07 00:36:48,842 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-10-07 00:36:48,845 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 00:36:48,846 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 00:36:48,846 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 175#(and (exists ((v_main_~i~0_BEFORE_CALL_226 Int) (|v_main_~#a~0.base_BEFORE_CALL_172| Int)) (or (and (= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_172|) (* 4 v_main_~i~0_BEFORE_CALL_226)) v_main_~i~0_BEFORE_CALL_226)) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_226) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_226 ~N~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_172|) (* 4 v_main_~i~0_BEFORE_CALL_226)) v_main_~i~0_BEFORE_CALL_226) (<= 0 v_main_~i~0_BEFORE_CALL_226) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_226 ~N~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:36:48,846 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 190#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_main_~i~0_BEFORE_CALL_226 Int) (|v_main_~#a~0.base_BEFORE_CALL_172| Int)) (or (and (= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_172|) (* 4 v_main_~i~0_BEFORE_CALL_226)) v_main_~i~0_BEFORE_CALL_226)) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_226) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_226 ~N~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_172|) (* 4 v_main_~i~0_BEFORE_CALL_226)) v_main_~i~0_BEFORE_CALL_226) (<= 0 v_main_~i~0_BEFORE_CALL_226) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_226 ~N~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:36:48,846 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 199#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 00:36:48,846 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertEXIT satisfy 185#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((v_main_~i~0_BEFORE_CALL_226 Int) (|v_main_~#a~0.base_BEFORE_CALL_172| Int)) (or (and (= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_172|) (* 4 v_main_~i~0_BEFORE_CALL_226)) v_main_~i~0_BEFORE_CALL_226)) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_226) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_226 ~N~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_172|) (* 4 v_main_~i~0_BEFORE_CALL_226)) v_main_~i~0_BEFORE_CALL_226) (<= 0 v_main_~i~0_BEFORE_CALL_226) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_226 ~N~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:36:48,847 INFO L193 IcfgInterpreter]: Reachable states at location L18-2 satisfy 148#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:36:48,847 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:36:48,847 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (<= 0 ~N~0) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:36:48,847 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 204#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:36:48,847 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 00:36:48,847 INFO L193 IcfgInterpreter]: Reachable states at location L7 satisfy 38#(and (= 0 |#NULL.base|) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (<= 0 (+ ~N~0 2147483648)) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:36:48,848 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 195#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_main_~i~0_BEFORE_CALL_226 Int) (|v_main_~#a~0.base_BEFORE_CALL_172| Int)) (or (and (= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_172|) (* 4 v_main_~i~0_BEFORE_CALL_226)) v_main_~i~0_BEFORE_CALL_226)) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_226) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_226 ~N~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_172|) (* 4 v_main_~i~0_BEFORE_CALL_226)) v_main_~i~0_BEFORE_CALL_226) (<= 0 v_main_~i~0_BEFORE_CALL_226) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_226 ~N~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:36:48,848 INFO L193 IcfgInterpreter]: Reachable states at location L19-1 satisfy 166#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= |main_#t~mem1| 2147483647) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (= main_~i~0 |main_#t~mem1|) (<= 0 |main_#t~mem1|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:36:48,848 INFO L193 IcfgInterpreter]: Reachable states at location L19 satisfy 153#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:36:48,848 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 170#(exists ((v_main_~i~0_BEFORE_CALL_226 Int) (|v_main_~#a~0.base_BEFORE_CALL_172| Int)) (or (and (= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_172|) (* 4 v_main_~i~0_BEFORE_CALL_226)) v_main_~i~0_BEFORE_CALL_226)) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_226) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_226 ~N~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_172|) (* 4 v_main_~i~0_BEFORE_CALL_226)) v_main_~i~0_BEFORE_CALL_226) (<= 0 v_main_~i~0_BEFORE_CALL_226) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_226 ~N~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-07 00:36:48,848 INFO L193 IcfgInterpreter]: Reachable states at location L2-3 satisfy 180#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((v_main_~i~0_BEFORE_CALL_226 Int) (|v_main_~#a~0.base_BEFORE_CALL_172| Int)) (or (and (= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_172|) (* 4 v_main_~i~0_BEFORE_CALL_226)) v_main_~i~0_BEFORE_CALL_226)) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_226) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_226 ~N~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_172|) (* 4 v_main_~i~0_BEFORE_CALL_226)) v_main_~i~0_BEFORE_CALL_226) (<= 0 v_main_~i~0_BEFORE_CALL_226) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_226 ~N~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:36:48,849 INFO L193 IcfgInterpreter]: Reachable states at location L12-2 satisfy 76#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (<= 0 main_~i~0) (= 0 |#NULL.base|) (<= 0 |#NULL.base|) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (= |#valid| (store |old(#valid)| |main_~#a~0.base| 1)) (<= 0 (+ ~N~0 2147483648)) (= main_~k~0 0) (<= main_~k~0 0) (= |main_~#a~0.offset| 0) (<= ~N~0 2147483647) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= |main_~#a~0.offset| 0) (<= main_~i~0 0) (< 0 ~N~0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (= (store |old(#length)| |main_~#a~0.base| (* 4 ~N~0)) |#length|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0)) [2019-10-07 00:36:50,340 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 00:36:50,340 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23, 22, 12] total 56 [2019-10-07 00:36:50,341 INFO L442 AbstractCegarLoop]: Interpolant automaton has 56 states [2019-10-07 00:36:50,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2019-10-07 00:36:50,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=2905, Unknown=0, NotChecked=0, Total=3080 [2019-10-07 00:36:50,342 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand 56 states. [2019-10-07 00:36:54,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:36:54,369 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2019-10-07 00:36:54,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2019-10-07 00:36:54,369 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 69 [2019-10-07 00:36:54,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:36:54,371 INFO L225 Difference]: With dead ends: 58 [2019-10-07 00:36:54,371 INFO L226 Difference]: Without dead ends: 56 [2019-10-07 00:36:54,373 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 152 SyntacticMatches, 23 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2643 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=585, Invalid=8535, Unknown=0, NotChecked=0, Total=9120 [2019-10-07 00:36:54,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-10-07 00:36:54,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2019-10-07 00:36:54,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-10-07 00:36:54,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2019-10-07 00:36:54,385 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 69 [2019-10-07 00:36:54,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:36:54,385 INFO L462 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2019-10-07 00:36:54,385 INFO L463 AbstractCegarLoop]: Interpolant automaton has 56 states. [2019-10-07 00:36:54,385 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2019-10-07 00:36:54,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2019-10-07 00:36:54,386 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:36:54,387 INFO L385 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:36:54,603 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:36:54,603 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:36:54,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:36:54,604 INFO L82 PathProgramCache]: Analyzing trace with hash -804889634, now seen corresponding path program 14 times [2019-10-07 00:36:54,604 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:36:54,605 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:36:54,605 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:36:54,605 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:36:54,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:36:54,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:36:54,792 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 94 proven. 58 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-10-07 00:36:54,792 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:36:54,792 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:36:54,792 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 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:36:55,028 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2019-10-07 00:36:55,028 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-07 00:36:55,029 INFO L256 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 20 conjunts are in the unsatisfiable core [2019-10-07 00:36:55,031 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:36:55,201 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 116 proven. 36 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-10-07 00:36:55,202 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:36:55,323 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 116 proven. 36 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-10-07 00:36:55,323 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:36:55,324 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-07 00:36:55,324 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:36:55,325 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:36:55,325 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:36:55,325 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:36:55,346 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 25 for LOIs [2019-10-07 00:36:55,547 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2019-10-07 00:36:55,556 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-10-07 00:36:55,564 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 00:36:55,564 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 00:36:55,564 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 175#(and (exists ((v_main_~i~0_BEFORE_CALL_251 Int) (|v_main_~#a~0.base_BEFORE_CALL_181| Int)) (or (and (= |#NULL.base| 0) (= v_main_~i~0_BEFORE_CALL_251 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_181|) (* 4 v_main_~i~0_BEFORE_CALL_251))) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (< v_main_~i~0_BEFORE_CALL_251 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 v_main_~i~0_BEFORE_CALL_251) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (< v_main_~i~0_BEFORE_CALL_251 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 v_main_~i~0_BEFORE_CALL_251) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (not (= v_main_~i~0_BEFORE_CALL_251 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_181|) (* 4 v_main_~i~0_BEFORE_CALL_251))))))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:36:55,564 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 190#(and (<= __VERIFIER_assert_~cond 0) (exists ((v_main_~i~0_BEFORE_CALL_251 Int) (|v_main_~#a~0.base_BEFORE_CALL_181| Int)) (or (and (= |#NULL.base| 0) (= v_main_~i~0_BEFORE_CALL_251 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_181|) (* 4 v_main_~i~0_BEFORE_CALL_251))) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (< v_main_~i~0_BEFORE_CALL_251 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 v_main_~i~0_BEFORE_CALL_251) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (< v_main_~i~0_BEFORE_CALL_251 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 v_main_~i~0_BEFORE_CALL_251) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (not (= v_main_~i~0_BEFORE_CALL_251 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_181|) (* 4 v_main_~i~0_BEFORE_CALL_251))))))) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:36:55,564 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 199#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 00:36:55,565 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertEXIT satisfy 185#(and (exists ((v_main_~i~0_BEFORE_CALL_251 Int) (|v_main_~#a~0.base_BEFORE_CALL_181| Int)) (or (and (= |#NULL.base| 0) (= v_main_~i~0_BEFORE_CALL_251 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_181|) (* 4 v_main_~i~0_BEFORE_CALL_251))) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (< v_main_~i~0_BEFORE_CALL_251 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 v_main_~i~0_BEFORE_CALL_251) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (< v_main_~i~0_BEFORE_CALL_251 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 v_main_~i~0_BEFORE_CALL_251) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (not (= v_main_~i~0_BEFORE_CALL_251 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_181|) (* 4 v_main_~i~0_BEFORE_CALL_251))))))) (not (= 0 __VERIFIER_assert_~cond)) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:36:55,565 INFO L193 IcfgInterpreter]: Reachable states at location L18-2 satisfy 148#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:36:55,565 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:36:55,565 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 |old(~N~0)|) (<= 0 ~N~0) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:36:55,565 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 204#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:36:55,565 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 00:36:55,566 INFO L193 IcfgInterpreter]: Reachable states at location L7 satisfy 38#(and (<= ~N~0 2147483647) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 |old(~N~0)|) (<= 0 (+ ~N~0 2147483648)) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:36:55,566 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 195#(and (<= __VERIFIER_assert_~cond 0) (exists ((v_main_~i~0_BEFORE_CALL_251 Int) (|v_main_~#a~0.base_BEFORE_CALL_181| Int)) (or (and (= |#NULL.base| 0) (= v_main_~i~0_BEFORE_CALL_251 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_181|) (* 4 v_main_~i~0_BEFORE_CALL_251))) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (< v_main_~i~0_BEFORE_CALL_251 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 v_main_~i~0_BEFORE_CALL_251) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (< v_main_~i~0_BEFORE_CALL_251 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 v_main_~i~0_BEFORE_CALL_251) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (not (= v_main_~i~0_BEFORE_CALL_251 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_181|) (* 4 v_main_~i~0_BEFORE_CALL_251))))))) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:36:55,566 INFO L193 IcfgInterpreter]: Reachable states at location L19-1 satisfy 166#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= |main_#t~mem1| 2147483647) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (= main_~i~0 |main_#t~mem1|) (<= 0 |main_#t~mem1|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:36:55,566 INFO L193 IcfgInterpreter]: Reachable states at location L19 satisfy 153#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:36:55,566 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 170#(exists ((v_main_~i~0_BEFORE_CALL_251 Int) (|v_main_~#a~0.base_BEFORE_CALL_181| Int)) (or (and (= |#NULL.base| 0) (= v_main_~i~0_BEFORE_CALL_251 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_181|) (* 4 v_main_~i~0_BEFORE_CALL_251))) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (< v_main_~i~0_BEFORE_CALL_251 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 v_main_~i~0_BEFORE_CALL_251) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (< v_main_~i~0_BEFORE_CALL_251 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 v_main_~i~0_BEFORE_CALL_251) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (not (= v_main_~i~0_BEFORE_CALL_251 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_181|) (* 4 v_main_~i~0_BEFORE_CALL_251))))))) [2019-10-07 00:36:55,567 INFO L193 IcfgInterpreter]: Reachable states at location L2-3 satisfy 180#(and (exists ((v_main_~i~0_BEFORE_CALL_251 Int) (|v_main_~#a~0.base_BEFORE_CALL_181| Int)) (or (and (= |#NULL.base| 0) (= v_main_~i~0_BEFORE_CALL_251 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_181|) (* 4 v_main_~i~0_BEFORE_CALL_251))) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (< v_main_~i~0_BEFORE_CALL_251 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 v_main_~i~0_BEFORE_CALL_251) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (< v_main_~i~0_BEFORE_CALL_251 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 v_main_~i~0_BEFORE_CALL_251) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (not (= v_main_~i~0_BEFORE_CALL_251 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_181|) (* 4 v_main_~i~0_BEFORE_CALL_251))))))) (not (= 0 __VERIFIER_assert_~cond)) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:36:55,567 INFO L193 IcfgInterpreter]: Reachable states at location L12-2 satisfy 76#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (<= 0 main_~i~0) (= 0 |#NULL.base|) (<= 0 |#NULL.base|) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (= |#valid| (store |old(#valid)| |main_~#a~0.base| 1)) (<= 0 (+ ~N~0 2147483648)) (= main_~k~0 0) (<= main_~k~0 0) (= |main_~#a~0.offset| 0) (<= ~N~0 2147483647) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= |main_~#a~0.offset| 0) (<= main_~i~0 0) (< 0 ~N~0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (= (store |old(#length)| |main_~#a~0.base| (* 4 ~N~0)) |#length|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0)) [2019-10-07 00:36:56,593 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 00:36:56,593 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21, 20, 12] total 44 [2019-10-07 00:36:56,594 INFO L442 AbstractCegarLoop]: Interpolant automaton has 44 states [2019-10-07 00:36:56,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2019-10-07 00:36:56,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=1608, Unknown=0, NotChecked=0, Total=1892 [2019-10-07 00:36:56,595 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand 44 states. [2019-10-07 00:37:00,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:37:00,440 INFO L93 Difference]: Finished difference Result 100 states and 116 transitions. [2019-10-07 00:37:00,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2019-10-07 00:37:00,441 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 76 [2019-10-07 00:37:00,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:37:00,442 INFO L225 Difference]: With dead ends: 100 [2019-10-07 00:37:00,442 INFO L226 Difference]: Without dead ends: 58 [2019-10-07 00:37:00,444 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 180 SyntacticMatches, 25 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4137 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1620, Invalid=9092, Unknown=0, NotChecked=0, Total=10712 [2019-10-07 00:37:00,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2019-10-07 00:37:00,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2019-10-07 00:37:00,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-10-07 00:37:00,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2019-10-07 00:37:00,457 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 76 [2019-10-07 00:37:00,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:37:00,457 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2019-10-07 00:37:00,458 INFO L463 AbstractCegarLoop]: Interpolant automaton has 44 states. [2019-10-07 00:37:00,458 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2019-10-07 00:37:00,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-10-07 00:37:00,458 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:37:00,458 INFO L385 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:37:00,659 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:37:00,659 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:37:00,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:37:00,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1520754937, now seen corresponding path program 15 times [2019-10-07 00:37:00,660 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:37:00,660 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:37:00,661 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:37:00,661 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:37:00,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:37:00,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:37:01,252 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 16 proven. 145 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-10-07 00:37:01,252 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:37:01,252 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:37:01,252 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:37:01,458 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-07 00:37:01,459 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-07 00:37:01,460 INFO L256 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 47 conjunts are in the unsatisfiable core [2019-10-07 00:37:01,462 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:37:02,322 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-10-07 00:37:02,323 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:37:03,028 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 16 proven. 145 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-10-07 00:37:03,029 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:37:03,030 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-07 00:37:03,030 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:37:03,030 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:37:03,030 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:37:03,031 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:37:03,054 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-07 00:37:03,279 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2019-10-07 00:37:03,288 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-10-07 00:37:03,292 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 00:37:03,292 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 00:37:03,292 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 175#(and (exists ((|v_main_~#a~0.base_BEFORE_CALL_206| Int) (v_main_~i~0_BEFORE_CALL_277 Int)) (or (and (= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_206|) (* 4 v_main_~i~0_BEFORE_CALL_277)) v_main_~i~0_BEFORE_CALL_277)) (= |__VERIFIER_assert_#in~cond| 0) (<= 0 v_main_~i~0_BEFORE_CALL_277) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_277 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= 0 v_main_~i~0_BEFORE_CALL_277) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_277 ~N~0) (<= 0 |#NULL.base|) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_206|) (* 4 v_main_~i~0_BEFORE_CALL_277)) v_main_~i~0_BEFORE_CALL_277) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:37:03,292 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 190#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_main_~#a~0.base_BEFORE_CALL_206| Int) (v_main_~i~0_BEFORE_CALL_277 Int)) (or (and (= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_206|) (* 4 v_main_~i~0_BEFORE_CALL_277)) v_main_~i~0_BEFORE_CALL_277)) (= |__VERIFIER_assert_#in~cond| 0) (<= 0 v_main_~i~0_BEFORE_CALL_277) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_277 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= 0 v_main_~i~0_BEFORE_CALL_277) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_277 ~N~0) (<= 0 |#NULL.base|) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_206|) (* 4 v_main_~i~0_BEFORE_CALL_277)) v_main_~i~0_BEFORE_CALL_277) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:37:03,293 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 199#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 00:37:03,293 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertEXIT satisfy 185#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((|v_main_~#a~0.base_BEFORE_CALL_206| Int) (v_main_~i~0_BEFORE_CALL_277 Int)) (or (and (= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_206|) (* 4 v_main_~i~0_BEFORE_CALL_277)) v_main_~i~0_BEFORE_CALL_277)) (= |__VERIFIER_assert_#in~cond| 0) (<= 0 v_main_~i~0_BEFORE_CALL_277) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_277 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= 0 v_main_~i~0_BEFORE_CALL_277) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_277 ~N~0) (<= 0 |#NULL.base|) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_206|) (* 4 v_main_~i~0_BEFORE_CALL_277)) v_main_~i~0_BEFORE_CALL_277) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:37:03,293 INFO L193 IcfgInterpreter]: Reachable states at location L18-2 satisfy 148#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:37:03,293 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:37:03,294 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 |old(~N~0)|) (<= 0 ~N~0) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:37:03,294 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 204#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:37:03,294 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 00:37:03,294 INFO L193 IcfgInterpreter]: Reachable states at location L7 satisfy 38#(and (= 0 |#NULL.base|) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 |old(~N~0)|) (<= 0 (+ ~N~0 2147483648)) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:37:03,295 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 195#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_main_~#a~0.base_BEFORE_CALL_206| Int) (v_main_~i~0_BEFORE_CALL_277 Int)) (or (and (= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_206|) (* 4 v_main_~i~0_BEFORE_CALL_277)) v_main_~i~0_BEFORE_CALL_277)) (= |__VERIFIER_assert_#in~cond| 0) (<= 0 v_main_~i~0_BEFORE_CALL_277) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_277 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= 0 v_main_~i~0_BEFORE_CALL_277) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_277 ~N~0) (<= 0 |#NULL.base|) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_206|) (* 4 v_main_~i~0_BEFORE_CALL_277)) v_main_~i~0_BEFORE_CALL_277) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:37:03,295 INFO L193 IcfgInterpreter]: Reachable states at location L19-1 satisfy 166#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= |main_#t~mem1| 2147483647) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (= main_~i~0 |main_#t~mem1|) (<= 0 |main_#t~mem1|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:37:03,295 INFO L193 IcfgInterpreter]: Reachable states at location L19 satisfy 153#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:37:03,295 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 170#(exists ((|v_main_~#a~0.base_BEFORE_CALL_206| Int) (v_main_~i~0_BEFORE_CALL_277 Int)) (or (and (= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_206|) (* 4 v_main_~i~0_BEFORE_CALL_277)) v_main_~i~0_BEFORE_CALL_277)) (= |__VERIFIER_assert_#in~cond| 0) (<= 0 v_main_~i~0_BEFORE_CALL_277) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_277 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= 0 v_main_~i~0_BEFORE_CALL_277) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_277 ~N~0) (<= 0 |#NULL.base|) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_206|) (* 4 v_main_~i~0_BEFORE_CALL_277)) v_main_~i~0_BEFORE_CALL_277) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-07 00:37:03,295 INFO L193 IcfgInterpreter]: Reachable states at location L2-3 satisfy 180#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((|v_main_~#a~0.base_BEFORE_CALL_206| Int) (v_main_~i~0_BEFORE_CALL_277 Int)) (or (and (= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_206|) (* 4 v_main_~i~0_BEFORE_CALL_277)) v_main_~i~0_BEFORE_CALL_277)) (= |__VERIFIER_assert_#in~cond| 0) (<= 0 v_main_~i~0_BEFORE_CALL_277) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_277 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= 0 v_main_~i~0_BEFORE_CALL_277) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_277 ~N~0) (<= 0 |#NULL.base|) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_206|) (* 4 v_main_~i~0_BEFORE_CALL_277)) v_main_~i~0_BEFORE_CALL_277) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:37:03,296 INFO L193 IcfgInterpreter]: Reachable states at location L12-2 satisfy 76#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (<= 0 main_~i~0) (= 0 |#NULL.base|) (<= 0 |#NULL.base|) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (<= 0 |#NULL.offset|) (= |#valid| (store |old(#valid)| |main_~#a~0.base| 1)) (<= 0 (+ ~N~0 2147483648)) (= main_~k~0 0) (<= main_~k~0 0) (= |main_~#a~0.offset| 0) (<= ~N~0 2147483647) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= |main_~#a~0.offset| 0) (<= main_~i~0 0) (< 0 ~N~0) (= 0 (select |old(#valid)| 0)) (<= |#NULL.offset| 0) (= 0 |old(~N~0)|) (<= 0 ~N~0) (= (store |old(#length)| |main_~#a~0.base| (* 4 ~N~0)) |#length|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0)) [2019-10-07 00:37:05,097 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 00:37:05,097 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25, 24, 12] total 67 [2019-10-07 00:37:05,098 INFO L442 AbstractCegarLoop]: Interpolant automaton has 67 states [2019-10-07 00:37:05,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2019-10-07 00:37:05,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=4206, Unknown=0, NotChecked=0, Total=4422 [2019-10-07 00:37:05,099 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand 67 states. [2019-10-07 00:37:10,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:37:10,130 INFO L93 Difference]: Finished difference Result 62 states and 71 transitions. [2019-10-07 00:37:10,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2019-10-07 00:37:10,131 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 77 [2019-10-07 00:37:10,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:37:10,132 INFO L225 Difference]: With dead ends: 62 [2019-10-07 00:37:10,132 INFO L226 Difference]: Without dead ends: 60 [2019-10-07 00:37:10,134 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 158 SyntacticMatches, 32 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2920 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=698, Invalid=11512, Unknown=0, NotChecked=0, Total=12210 [2019-10-07 00:37:10,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-10-07 00:37:10,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2019-10-07 00:37:10,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-10-07 00:37:10,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2019-10-07 00:37:10,151 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 77 [2019-10-07 00:37:10,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:37:10,152 INFO L462 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2019-10-07 00:37:10,152 INFO L463 AbstractCegarLoop]: Interpolant automaton has 67 states. [2019-10-07 00:37:10,152 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2019-10-07 00:37:10,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-10-07 00:37:10,153 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:37:10,153 INFO L385 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:37:10,357 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:37:10,358 INFO L410 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:37:10,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:37:10,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1466277490, now seen corresponding path program 16 times [2019-10-07 00:37:10,359 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:37:10,359 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:37:10,360 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:37:10,360 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:37:10,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:37:10,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:37:10,605 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 119 proven. 70 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2019-10-07 00:37:10,605 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:37:10,605 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:37:10,605 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 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:37:10,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:37:10,824 INFO L256 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 22 conjunts are in the unsatisfiable core [2019-10-07 00:37:10,826 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:37:11,058 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 144 proven. 45 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2019-10-07 00:37:11,058 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:37:11,280 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 144 proven. 45 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2019-10-07 00:37:11,280 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:37:11,281 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-07 00:37:11,281 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:37:11,282 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:37:11,282 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:37:11,282 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:37:11,298 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 25 for LOIs [2019-10-07 00:37:11,509 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2019-10-07 00:37:11,517 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-10-07 00:37:11,520 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 00:37:11,520 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 00:37:11,521 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 175#(and (exists ((v_main_~i~0_BEFORE_CALL_304 Int) (|v_main_~#a~0.base_BEFORE_CALL_215| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_304) (= |#NULL.offset| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_215|) (* 4 v_main_~i~0_BEFORE_CALL_304)) v_main_~i~0_BEFORE_CALL_304)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_304 ~N~0)) (and (= |#NULL.base| 0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_215|) (* 4 v_main_~i~0_BEFORE_CALL_304)) v_main_~i~0_BEFORE_CALL_304) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_304) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_304 ~N~0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:37:11,521 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 190#(and (<= __VERIFIER_assert_~cond 0) (exists ((v_main_~i~0_BEFORE_CALL_304 Int) (|v_main_~#a~0.base_BEFORE_CALL_215| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_304) (= |#NULL.offset| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_215|) (* 4 v_main_~i~0_BEFORE_CALL_304)) v_main_~i~0_BEFORE_CALL_304)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_304 ~N~0)) (and (= |#NULL.base| 0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_215|) (* 4 v_main_~i~0_BEFORE_CALL_304)) v_main_~i~0_BEFORE_CALL_304) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_304) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_304 ~N~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)) [2019-10-07 00:37:11,521 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 199#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 00:37:11,521 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertEXIT satisfy 185#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((v_main_~i~0_BEFORE_CALL_304 Int) (|v_main_~#a~0.base_BEFORE_CALL_215| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_304) (= |#NULL.offset| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_215|) (* 4 v_main_~i~0_BEFORE_CALL_304)) v_main_~i~0_BEFORE_CALL_304)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_304 ~N~0)) (and (= |#NULL.base| 0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_215|) (* 4 v_main_~i~0_BEFORE_CALL_304)) v_main_~i~0_BEFORE_CALL_304) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_304) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_304 ~N~0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:37:11,522 INFO L193 IcfgInterpreter]: Reachable states at location L18-2 satisfy 148#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:37:11,522 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:37:11,522 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 |old(~N~0)|) (<= 0 ~N~0) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:37:11,523 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 204#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:37:11,523 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 00:37:11,523 INFO L193 IcfgInterpreter]: Reachable states at location L7 satisfy 38#(and (= 0 |#NULL.base|) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 |old(~N~0)|) (<= 0 (+ ~N~0 2147483648)) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:37:11,523 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 195#(and (<= __VERIFIER_assert_~cond 0) (exists ((v_main_~i~0_BEFORE_CALL_304 Int) (|v_main_~#a~0.base_BEFORE_CALL_215| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_304) (= |#NULL.offset| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_215|) (* 4 v_main_~i~0_BEFORE_CALL_304)) v_main_~i~0_BEFORE_CALL_304)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_304 ~N~0)) (and (= |#NULL.base| 0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_215|) (* 4 v_main_~i~0_BEFORE_CALL_304)) v_main_~i~0_BEFORE_CALL_304) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_304) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_304 ~N~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)) [2019-10-07 00:37:11,523 INFO L193 IcfgInterpreter]: Reachable states at location L19-1 satisfy 166#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= |main_#t~mem1| 2147483647) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (= main_~i~0 |main_#t~mem1|) (<= 0 |main_#t~mem1|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:37:11,524 INFO L193 IcfgInterpreter]: Reachable states at location L19 satisfy 153#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:37:11,524 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 170#(exists ((v_main_~i~0_BEFORE_CALL_304 Int) (|v_main_~#a~0.base_BEFORE_CALL_215| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_304) (= |#NULL.offset| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_215|) (* 4 v_main_~i~0_BEFORE_CALL_304)) v_main_~i~0_BEFORE_CALL_304)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_304 ~N~0)) (and (= |#NULL.base| 0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_215|) (* 4 v_main_~i~0_BEFORE_CALL_304)) v_main_~i~0_BEFORE_CALL_304) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_304) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_304 ~N~0)))) [2019-10-07 00:37:11,524 INFO L193 IcfgInterpreter]: Reachable states at location L2-3 satisfy 180#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((v_main_~i~0_BEFORE_CALL_304 Int) (|v_main_~#a~0.base_BEFORE_CALL_215| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_304) (= |#NULL.offset| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_215|) (* 4 v_main_~i~0_BEFORE_CALL_304)) v_main_~i~0_BEFORE_CALL_304)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_304 ~N~0)) (and (= |#NULL.base| 0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_215|) (* 4 v_main_~i~0_BEFORE_CALL_304)) v_main_~i~0_BEFORE_CALL_304) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_304) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_304 ~N~0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:37:11,524 INFO L193 IcfgInterpreter]: Reachable states at location L12-2 satisfy 76#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (<= 0 main_~i~0) (= 0 |#NULL.base|) (<= 0 |#NULL.base|) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (= |#valid| (store |old(#valid)| |main_~#a~0.base| 1)) (<= 0 (+ ~N~0 2147483648)) (= main_~k~0 0) (<= main_~k~0 0) (= |main_~#a~0.offset| 0) (<= ~N~0 2147483647) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= |main_~#a~0.offset| 0) (<= main_~i~0 0) (< 0 ~N~0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (= (store |old(#length)| |main_~#a~0.base| (* 4 ~N~0)) |#length|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0)) [2019-10-07 00:37:12,607 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 00:37:12,607 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23, 22, 12] total 47 [2019-10-07 00:37:12,607 INFO L442 AbstractCegarLoop]: Interpolant automaton has 47 states [2019-10-07 00:37:12,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2019-10-07 00:37:12,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=1832, Unknown=0, NotChecked=0, Total=2162 [2019-10-07 00:37:12,608 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand 47 states. [2019-10-07 00:37:17,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:37:17,040 INFO L93 Difference]: Finished difference Result 107 states and 125 transitions. [2019-10-07 00:37:17,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2019-10-07 00:37:17,040 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 84 [2019-10-07 00:37:17,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:37:17,041 INFO L225 Difference]: With dead ends: 107 [2019-10-07 00:37:17,041 INFO L226 Difference]: Without dead ends: 62 [2019-10-07 00:37:17,043 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 200 SyntacticMatches, 28 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4951 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=1929, Invalid=10727, Unknown=0, NotChecked=0, Total=12656 [2019-10-07 00:37:17,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2019-10-07 00:37:17,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 58. [2019-10-07 00:37:17,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-10-07 00:37:17,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2019-10-07 00:37:17,057 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 84 [2019-10-07 00:37:17,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:37:17,058 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2019-10-07 00:37:17,058 INFO L463 AbstractCegarLoop]: Interpolant automaton has 47 states. [2019-10-07 00:37:17,058 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2019-10-07 00:37:17,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-10-07 00:37:17,058 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:37:17,058 INFO L385 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:37:17,259 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:37:17,260 INFO L410 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:37:17,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:37:17,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1796810611, now seen corresponding path program 17 times [2019-10-07 00:37:17,260 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:37:17,261 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:37:17,261 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:37:17,261 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:37:17,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:37:17,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:37:17,778 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 18 proven. 181 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2019-10-07 00:37:17,778 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:37:17,778 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:37:17,778 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 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:37:18,119 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2019-10-07 00:37:18,119 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-07 00:37:18,122 INFO L256 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 72 conjunts are in the unsatisfiable core [2019-10-07 00:37:18,124 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:37:19,722 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 199 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2019-10-07 00:37:19,722 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:37:20,783 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 18 proven. 181 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2019-10-07 00:37:20,783 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:37:20,784 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-07 00:37:20,784 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:37:20,785 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:37:20,785 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:37:20,785 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:37:20,801 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 25 for LOIs [2019-10-07 00:37:21,003 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2019-10-07 00:37:21,010 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-10-07 00:37:21,012 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 00:37:21,013 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 00:37:21,013 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 175#(and (exists ((v_main_~i~0_BEFORE_CALL_332 Int) (|v_main_~#a~0.base_BEFORE_CALL_242| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_332 ~N~0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_242|) (* 4 v_main_~i~0_BEFORE_CALL_332)) v_main_~i~0_BEFORE_CALL_332) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 v_main_~i~0_BEFORE_CALL_332)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_242|) (* 4 v_main_~i~0_BEFORE_CALL_332)) v_main_~i~0_BEFORE_CALL_332)) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_332 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 v_main_~i~0_BEFORE_CALL_332)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:37:21,013 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 190#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond) (exists ((v_main_~i~0_BEFORE_CALL_332 Int) (|v_main_~#a~0.base_BEFORE_CALL_242| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_332 ~N~0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_242|) (* 4 v_main_~i~0_BEFORE_CALL_332)) v_main_~i~0_BEFORE_CALL_332) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 v_main_~i~0_BEFORE_CALL_332)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_242|) (* 4 v_main_~i~0_BEFORE_CALL_332)) v_main_~i~0_BEFORE_CALL_332)) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_332 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 v_main_~i~0_BEFORE_CALL_332)))) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:37:21,013 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 199#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 00:37:21,013 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertEXIT satisfy 185#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((v_main_~i~0_BEFORE_CALL_332 Int) (|v_main_~#a~0.base_BEFORE_CALL_242| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_332 ~N~0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_242|) (* 4 v_main_~i~0_BEFORE_CALL_332)) v_main_~i~0_BEFORE_CALL_332) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 v_main_~i~0_BEFORE_CALL_332)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_242|) (* 4 v_main_~i~0_BEFORE_CALL_332)) v_main_~i~0_BEFORE_CALL_332)) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_332 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 v_main_~i~0_BEFORE_CALL_332)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:37:21,013 INFO L193 IcfgInterpreter]: Reachable states at location L18-2 satisfy 148#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:37:21,013 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:37:21,014 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (<= 0 ~N~0) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:37:21,014 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 204#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:37:21,014 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 00:37:21,014 INFO L193 IcfgInterpreter]: Reachable states at location L7 satisfy 38#(and (= 0 |#NULL.base|) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (<= 0 (+ ~N~0 2147483648)) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:37:21,014 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 195#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond) (exists ((v_main_~i~0_BEFORE_CALL_332 Int) (|v_main_~#a~0.base_BEFORE_CALL_242| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_332 ~N~0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_242|) (* 4 v_main_~i~0_BEFORE_CALL_332)) v_main_~i~0_BEFORE_CALL_332) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 v_main_~i~0_BEFORE_CALL_332)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_242|) (* 4 v_main_~i~0_BEFORE_CALL_332)) v_main_~i~0_BEFORE_CALL_332)) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_332 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 v_main_~i~0_BEFORE_CALL_332)))) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:37:21,014 INFO L193 IcfgInterpreter]: Reachable states at location L19-1 satisfy 166#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= |main_#t~mem1| 2147483647) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (= main_~i~0 |main_#t~mem1|) (<= 0 |main_#t~mem1|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:37:21,014 INFO L193 IcfgInterpreter]: Reachable states at location L19 satisfy 153#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:37:21,015 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 170#(exists ((v_main_~i~0_BEFORE_CALL_332 Int) (|v_main_~#a~0.base_BEFORE_CALL_242| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_332 ~N~0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_242|) (* 4 v_main_~i~0_BEFORE_CALL_332)) v_main_~i~0_BEFORE_CALL_332) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 v_main_~i~0_BEFORE_CALL_332)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_242|) (* 4 v_main_~i~0_BEFORE_CALL_332)) v_main_~i~0_BEFORE_CALL_332)) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_332 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 v_main_~i~0_BEFORE_CALL_332)))) [2019-10-07 00:37:21,015 INFO L193 IcfgInterpreter]: Reachable states at location L2-3 satisfy 180#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((v_main_~i~0_BEFORE_CALL_332 Int) (|v_main_~#a~0.base_BEFORE_CALL_242| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_332 ~N~0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_242|) (* 4 v_main_~i~0_BEFORE_CALL_332)) v_main_~i~0_BEFORE_CALL_332) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 v_main_~i~0_BEFORE_CALL_332)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_242|) (* 4 v_main_~i~0_BEFORE_CALL_332)) v_main_~i~0_BEFORE_CALL_332)) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_332 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 v_main_~i~0_BEFORE_CALL_332)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:37:21,015 INFO L193 IcfgInterpreter]: Reachable states at location L12-2 satisfy 76#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (<= 0 main_~i~0) (= 0 |#NULL.base|) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (= |#valid| (store |old(#valid)| |main_~#a~0.base| 1)) (<= 0 (+ ~N~0 2147483648)) (= main_~k~0 0) (<= main_~k~0 0) (= |main_~#a~0.offset| 0) (<= ~N~0 2147483647) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= main_~i~0 0) (< 0 ~N~0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (= (store |old(#length)| |main_~#a~0.base| (* 4 ~N~0)) |#length|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0)) [2019-10-07 00:37:23,125 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 00:37:23,126 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 27, 26, 12] total 84 [2019-10-07 00:37:23,126 INFO L442 AbstractCegarLoop]: Interpolant automaton has 84 states [2019-10-07 00:37:23,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2019-10-07 00:37:23,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=448, Invalid=6524, Unknown=0, NotChecked=0, Total=6972 [2019-10-07 00:37:23,127 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand 84 states. [2019-10-07 00:37:26,620 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 47 [2019-10-07 00:37:33,055 WARN L191 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 95 [2019-10-07 00:37:33,366 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 96 [2019-10-07 00:37:33,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:37:33,771 INFO L93 Difference]: Finished difference Result 109 states and 130 transitions. [2019-10-07 00:37:33,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2019-10-07 00:37:33,771 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 85 [2019-10-07 00:37:33,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:37:33,773 INFO L225 Difference]: With dead ends: 109 [2019-10-07 00:37:33,773 INFO L226 Difference]: Without dead ends: 64 [2019-10-07 00:37:33,775 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 172 SyntacticMatches, 27 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8103 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=1987, Invalid=25735, Unknown=0, NotChecked=0, Total=27722 [2019-10-07 00:37:33,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2019-10-07 00:37:33,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2019-10-07 00:37:33,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2019-10-07 00:37:33,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 72 transitions. [2019-10-07 00:37:33,790 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 72 transitions. Word has length 85 [2019-10-07 00:37:33,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:37:33,791 INFO L462 AbstractCegarLoop]: Abstraction has 62 states and 72 transitions. [2019-10-07 00:37:33,791 INFO L463 AbstractCegarLoop]: Interpolant automaton has 84 states. [2019-10-07 00:37:33,791 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 72 transitions. [2019-10-07 00:37:33,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-07 00:37:33,793 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:37:33,793 INFO L385 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:37:34,016 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:37:34,016 INFO L410 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:37:34,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:37:34,017 INFO L82 PathProgramCache]: Analyzing trace with hash -480467079, now seen corresponding path program 18 times [2019-10-07 00:37:34,017 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:37:34,017 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:37:34,017 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:37:34,017 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:37:34,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:37:34,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:37:34,489 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 20 proven. 221 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2019-10-07 00:37:34,489 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:37:34,489 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:37:34,489 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 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:37:34,744 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-07 00:37:34,744 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-07 00:37:34,745 INFO L256 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 55 conjunts are in the unsatisfiable core [2019-10-07 00:37:34,747 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:37:36,553 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 0 proven. 241 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2019-10-07 00:37:36,554 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:37:36,653 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 20 proven. 221 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2019-10-07 00:37:36,653 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:37:36,654 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-07 00:37:36,654 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:37:36,655 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:37:36,655 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:37:36,655 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:37:36,673 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 25 for LOIs [2019-10-07 00:37:36,873 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2019-10-07 00:37:36,879 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-10-07 00:37:36,883 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 00:37:36,883 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 00:37:36,883 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 175#(and (exists ((v_main_~i~0_BEFORE_CALL_362 Int) (|v_main_~#a~0.base_BEFORE_CALL_271| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_362 ~N~0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_362) (= |#NULL.offset| 0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_271|) (* 4 v_main_~i~0_BEFORE_CALL_362)) v_main_~i~0_BEFORE_CALL_362) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_271|) (* 4 v_main_~i~0_BEFORE_CALL_362)) v_main_~i~0_BEFORE_CALL_362)) (< v_main_~i~0_BEFORE_CALL_362 ~N~0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_362) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:37:36,883 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 190#(and (exists ((v_main_~i~0_BEFORE_CALL_362 Int) (|v_main_~#a~0.base_BEFORE_CALL_271| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_362 ~N~0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_362) (= |#NULL.offset| 0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_271|) (* 4 v_main_~i~0_BEFORE_CALL_362)) v_main_~i~0_BEFORE_CALL_362) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_271|) (* 4 v_main_~i~0_BEFORE_CALL_362)) v_main_~i~0_BEFORE_CALL_362)) (< v_main_~i~0_BEFORE_CALL_362 ~N~0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_362) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= __VERIFIER_assert_~cond 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)) [2019-10-07 00:37:36,883 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 199#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 00:37:36,883 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertEXIT satisfy 185#(and (exists ((v_main_~i~0_BEFORE_CALL_362 Int) (|v_main_~#a~0.base_BEFORE_CALL_271| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_362 ~N~0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_362) (= |#NULL.offset| 0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_271|) (* 4 v_main_~i~0_BEFORE_CALL_362)) v_main_~i~0_BEFORE_CALL_362) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_271|) (* 4 v_main_~i~0_BEFORE_CALL_362)) v_main_~i~0_BEFORE_CALL_362)) (< v_main_~i~0_BEFORE_CALL_362 ~N~0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_362) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (not (= 0 __VERIFIER_assert_~cond)) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:37:36,884 INFO L193 IcfgInterpreter]: Reachable states at location L18-2 satisfy 148#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:37:36,884 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:37:36,884 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 |old(~N~0)|) (<= 0 ~N~0) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:37:36,884 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 204#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:37:36,884 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 00:37:36,884 INFO L193 IcfgInterpreter]: Reachable states at location L7 satisfy 38#(and (= 0 |#NULL.base|) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 |old(~N~0)|) (<= 0 (+ ~N~0 2147483648)) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:37:36,884 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 195#(and (exists ((v_main_~i~0_BEFORE_CALL_362 Int) (|v_main_~#a~0.base_BEFORE_CALL_271| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_362 ~N~0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_362) (= |#NULL.offset| 0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_271|) (* 4 v_main_~i~0_BEFORE_CALL_362)) v_main_~i~0_BEFORE_CALL_362) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_271|) (* 4 v_main_~i~0_BEFORE_CALL_362)) v_main_~i~0_BEFORE_CALL_362)) (< v_main_~i~0_BEFORE_CALL_362 ~N~0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_362) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= __VERIFIER_assert_~cond 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)) [2019-10-07 00:37:36,884 INFO L193 IcfgInterpreter]: Reachable states at location L19-1 satisfy 166#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= |main_#t~mem1| 2147483647) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (= main_~i~0 |main_#t~mem1|) (<= 0 |main_#t~mem1|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:37:36,885 INFO L193 IcfgInterpreter]: Reachable states at location L19 satisfy 153#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:37:36,885 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 170#(exists ((v_main_~i~0_BEFORE_CALL_362 Int) (|v_main_~#a~0.base_BEFORE_CALL_271| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_362 ~N~0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_362) (= |#NULL.offset| 0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_271|) (* 4 v_main_~i~0_BEFORE_CALL_362)) v_main_~i~0_BEFORE_CALL_362) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_271|) (* 4 v_main_~i~0_BEFORE_CALL_362)) v_main_~i~0_BEFORE_CALL_362)) (< v_main_~i~0_BEFORE_CALL_362 ~N~0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_362) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-07 00:37:36,885 INFO L193 IcfgInterpreter]: Reachable states at location L2-3 satisfy 180#(and (exists ((v_main_~i~0_BEFORE_CALL_362 Int) (|v_main_~#a~0.base_BEFORE_CALL_271| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_362 ~N~0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_362) (= |#NULL.offset| 0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_271|) (* 4 v_main_~i~0_BEFORE_CALL_362)) v_main_~i~0_BEFORE_CALL_362) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_271|) (* 4 v_main_~i~0_BEFORE_CALL_362)) v_main_~i~0_BEFORE_CALL_362)) (< v_main_~i~0_BEFORE_CALL_362 ~N~0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_362) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (not (= 0 __VERIFIER_assert_~cond)) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:37:36,885 INFO L193 IcfgInterpreter]: Reachable states at location L12-2 satisfy 76#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (<= 0 main_~i~0) (= 0 |#NULL.base|) (<= 0 |#NULL.base|) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (= |#valid| (store |old(#valid)| |main_~#a~0.base| 1)) (<= 0 (+ ~N~0 2147483648)) (= main_~k~0 0) (<= main_~k~0 0) (= |main_~#a~0.offset| 0) (<= ~N~0 2147483647) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= |main_~#a~0.offset| 0) (<= main_~i~0 0) (< 0 ~N~0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (= (store |old(#length)| |main_~#a~0.base| (* 4 ~N~0)) |#length|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0)) [2019-10-07 00:37:38,821 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 00:37:38,821 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 29, 28, 12] total 68 [2019-10-07 00:37:38,822 INFO L442 AbstractCegarLoop]: Interpolant automaton has 68 states [2019-10-07 00:37:38,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2019-10-07 00:37:38,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=4342, Unknown=0, NotChecked=0, Total=4556 [2019-10-07 00:37:38,823 INFO L87 Difference]: Start difference. First operand 62 states and 72 transitions. Second operand 68 states. [2019-10-07 00:37:45,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:37:45,160 INFO L93 Difference]: Finished difference Result 70 states and 81 transitions. [2019-10-07 00:37:45,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2019-10-07 00:37:45,161 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 93 [2019-10-07 00:37:45,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:37:45,162 INFO L225 Difference]: With dead ends: 70 [2019-10-07 00:37:45,162 INFO L226 Difference]: Without dead ends: 68 [2019-10-07 00:37:45,164 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 209 SyntacticMatches, 32 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4332 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=753, Invalid=13527, Unknown=0, NotChecked=0, Total=14280 [2019-10-07 00:37:45,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-10-07 00:37:45,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 65. [2019-10-07 00:37:45,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2019-10-07 00:37:45,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 76 transitions. [2019-10-07 00:37:45,178 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 76 transitions. Word has length 93 [2019-10-07 00:37:45,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:37:45,179 INFO L462 AbstractCegarLoop]: Abstraction has 65 states and 76 transitions. [2019-10-07 00:37:45,179 INFO L463 AbstractCegarLoop]: Interpolant automaton has 68 states. [2019-10-07 00:37:45,179 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 76 transitions. [2019-10-07 00:37:45,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-10-07 00:37:45,180 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:37:45,180 INFO L385 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:37:45,384 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:37:45,384 INFO L410 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:37:45,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:37:45,385 INFO L82 PathProgramCache]: Analyzing trace with hash -65435662, now seen corresponding path program 19 times [2019-10-07 00:37:45,385 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:37:45,385 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:37:45,385 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:37:45,385 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:37:45,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:37:45,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:37:45,644 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 178 proven. 97 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2019-10-07 00:37:45,644 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:37:45,644 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:37:45,644 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 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:37:45,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:37:45,903 INFO L256 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 26 conjunts are in the unsatisfiable core [2019-10-07 00:37:45,905 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:37:46,171 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 209 proven. 66 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2019-10-07 00:37:46,172 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:37:46,392 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 209 proven. 66 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2019-10-07 00:37:46,392 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:37:46,393 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-07 00:37:46,393 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:37:46,393 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:37:46,394 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:37:46,394 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:37:46,410 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-07 00:37:46,627 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2019-10-07 00:37:46,632 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-10-07 00:37:46,636 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 00:37:46,636 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 00:37:46,636 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 175#(and (exists ((v_main_~i~0_BEFORE_CALL_393 Int) (|v_main_~#a~0.base_BEFORE_CALL_280| Int)) (or (and (< v_main_~i~0_BEFORE_CALL_393 ~N~0) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_393) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_280|) (* 4 v_main_~i~0_BEFORE_CALL_393)) v_main_~i~0_BEFORE_CALL_393)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (< v_main_~i~0_BEFORE_CALL_393 ~N~0) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_393) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_280|) (* 4 v_main_~i~0_BEFORE_CALL_393)) v_main_~i~0_BEFORE_CALL_393) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:37:46,636 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 190#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_main_~i~0_BEFORE_CALL_393 Int) (|v_main_~#a~0.base_BEFORE_CALL_280| Int)) (or (and (< v_main_~i~0_BEFORE_CALL_393 ~N~0) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_393) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_280|) (* 4 v_main_~i~0_BEFORE_CALL_393)) v_main_~i~0_BEFORE_CALL_393)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (< v_main_~i~0_BEFORE_CALL_393 ~N~0) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_393) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_280|) (* 4 v_main_~i~0_BEFORE_CALL_393)) v_main_~i~0_BEFORE_CALL_393) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:37:46,637 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 199#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 00:37:46,637 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertEXIT satisfy 185#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((v_main_~i~0_BEFORE_CALL_393 Int) (|v_main_~#a~0.base_BEFORE_CALL_280| Int)) (or (and (< v_main_~i~0_BEFORE_CALL_393 ~N~0) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_393) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_280|) (* 4 v_main_~i~0_BEFORE_CALL_393)) v_main_~i~0_BEFORE_CALL_393)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (< v_main_~i~0_BEFORE_CALL_393 ~N~0) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_393) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_280|) (* 4 v_main_~i~0_BEFORE_CALL_393)) v_main_~i~0_BEFORE_CALL_393) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:37:46,637 INFO L193 IcfgInterpreter]: Reachable states at location L18-2 satisfy 148#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:37:46,637 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:37:46,637 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (<= 0 ~N~0) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#memory_int| |old(#memory_int)|) (<= |old(~N~0)| 0) (<= 0 |old(~N~0)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:37:46,638 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 204#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:37:46,638 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 00:37:46,638 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 195#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_main_~i~0_BEFORE_CALL_393 Int) (|v_main_~#a~0.base_BEFORE_CALL_280| Int)) (or (and (< v_main_~i~0_BEFORE_CALL_393 ~N~0) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_393) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_280|) (* 4 v_main_~i~0_BEFORE_CALL_393)) v_main_~i~0_BEFORE_CALL_393)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (< v_main_~i~0_BEFORE_CALL_393 ~N~0) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_393) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_280|) (* 4 v_main_~i~0_BEFORE_CALL_393)) v_main_~i~0_BEFORE_CALL_393) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:37:46,638 INFO L193 IcfgInterpreter]: Reachable states at location L7 satisfy 38#(and (= 0 |#NULL.base|) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (<= 0 (+ ~N~0 2147483648)) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (<= |old(~N~0)| 0) (<= 0 |old(~N~0)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:37:46,639 INFO L193 IcfgInterpreter]: Reachable states at location L19-1 satisfy 166#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= |main_#t~mem1| 2147483647) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (= main_~i~0 |main_#t~mem1|) (<= 0 |main_#t~mem1|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:37:46,639 INFO L193 IcfgInterpreter]: Reachable states at location L19 satisfy 153#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:37:46,639 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 170#(exists ((v_main_~i~0_BEFORE_CALL_393 Int) (|v_main_~#a~0.base_BEFORE_CALL_280| Int)) (or (and (< v_main_~i~0_BEFORE_CALL_393 ~N~0) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_393) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_280|) (* 4 v_main_~i~0_BEFORE_CALL_393)) v_main_~i~0_BEFORE_CALL_393)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (< v_main_~i~0_BEFORE_CALL_393 ~N~0) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_393) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_280|) (* 4 v_main_~i~0_BEFORE_CALL_393)) v_main_~i~0_BEFORE_CALL_393) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-07 00:37:46,639 INFO L193 IcfgInterpreter]: Reachable states at location L2-3 satisfy 180#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((v_main_~i~0_BEFORE_CALL_393 Int) (|v_main_~#a~0.base_BEFORE_CALL_280| Int)) (or (and (< v_main_~i~0_BEFORE_CALL_393 ~N~0) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_393) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_280|) (* 4 v_main_~i~0_BEFORE_CALL_393)) v_main_~i~0_BEFORE_CALL_393)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (< v_main_~i~0_BEFORE_CALL_393 ~N~0) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_393) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_280|) (* 4 v_main_~i~0_BEFORE_CALL_393)) v_main_~i~0_BEFORE_CALL_393) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:37:46,639 INFO L193 IcfgInterpreter]: Reachable states at location L12-2 satisfy 76#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (<= 0 main_~i~0) (= 0 |#NULL.base|) (<= 0 |#NULL.base|) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (= |#valid| (store |old(#valid)| |main_~#a~0.base| 1)) (<= 0 (+ ~N~0 2147483648)) (= main_~k~0 0) (<= main_~k~0 0) (= |main_~#a~0.offset| 0) (<= ~N~0 2147483647) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= |main_~#a~0.offset| 0) (<= main_~i~0 0) (< 0 ~N~0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (= (store |old(#length)| |main_~#a~0.base| (* 4 ~N~0)) |#length|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0)) [2019-10-07 00:37:47,873 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 00:37:47,873 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 27, 26, 12] total 53 [2019-10-07 00:37:47,874 INFO L442 AbstractCegarLoop]: Interpolant automaton has 53 states [2019-10-07 00:37:47,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2019-10-07 00:37:47,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=434, Invalid=2322, Unknown=0, NotChecked=0, Total=2756 [2019-10-07 00:37:47,875 INFO L87 Difference]: Start difference. First operand 65 states and 76 transitions. Second operand 53 states. [2019-10-07 00:37:53,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:37:53,121 INFO L93 Difference]: Finished difference Result 121 states and 143 transitions. [2019-10-07 00:37:53,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2019-10-07 00:37:53,128 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 100 [2019-10-07 00:37:53,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:37:53,129 INFO L225 Difference]: With dead ends: 121 [2019-10-07 00:37:53,129 INFO L226 Difference]: Without dead ends: 70 [2019-10-07 00:37:53,131 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 240 SyntacticMatches, 34 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6795 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=2631, Invalid=14399, Unknown=0, NotChecked=0, Total=17030 [2019-10-07 00:37:53,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2019-10-07 00:37:53,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 66. [2019-10-07 00:37:53,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-10-07 00:37:53,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 77 transitions. [2019-10-07 00:37:53,144 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 77 transitions. Word has length 100 [2019-10-07 00:37:53,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:37:53,144 INFO L462 AbstractCegarLoop]: Abstraction has 66 states and 77 transitions. [2019-10-07 00:37:53,145 INFO L463 AbstractCegarLoop]: Interpolant automaton has 53 states. [2019-10-07 00:37:53,145 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 77 transitions. [2019-10-07 00:37:53,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-10-07 00:37:53,145 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:37:53,145 INFO L385 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:37:53,346 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:37:53,346 INFO L410 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:37:53,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:37:53,347 INFO L82 PathProgramCache]: Analyzing trace with hash 366029837, now seen corresponding path program 20 times [2019-10-07 00:37:53,347 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:37:53,347 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:37:53,348 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:37:53,348 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:37:53,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:37:53,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:37:53,880 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 22 proven. 265 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2019-10-07 00:37:53,880 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:37:53,880 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:37:53,880 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 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:37:54,430 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2019-10-07 00:37:54,430 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-07 00:37:54,432 INFO L256 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 60 conjunts are in the unsatisfiable core [2019-10-07 00:37:54,435 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:37:56,669 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 176 proven. 111 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2019-10-07 00:37:56,670 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:37:58,591 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 187 proven. 100 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2019-10-07 00:37:58,592 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:37:58,593 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-07 00:37:58,593 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:37:58,593 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:37:58,593 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:37:58,593 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:37:58,613 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 25 for LOIs [2019-10-07 00:37:58,816 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2019-10-07 00:37:58,833 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-10-07 00:37:58,835 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 00:37:58,836 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 00:37:58,836 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 175#(and (exists ((|v_main_~#a~0.base_BEFORE_CALL_311| Int) (v_main_~i~0_BEFORE_CALL_425 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_425) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= v_main_~i~0_BEFORE_CALL_425 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_311|) (* 4 v_main_~i~0_BEFORE_CALL_425))) (< v_main_~i~0_BEFORE_CALL_425 ~N~0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (not (= v_main_~i~0_BEFORE_CALL_425 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_311|) (* 4 v_main_~i~0_BEFORE_CALL_425)))) (<= 0 v_main_~i~0_BEFORE_CALL_425) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_425 ~N~0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:37:58,836 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 190#(and (exists ((|v_main_~#a~0.base_BEFORE_CALL_311| Int) (v_main_~i~0_BEFORE_CALL_425 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_425) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= v_main_~i~0_BEFORE_CALL_425 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_311|) (* 4 v_main_~i~0_BEFORE_CALL_425))) (< v_main_~i~0_BEFORE_CALL_425 ~N~0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (not (= v_main_~i~0_BEFORE_CALL_425 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_311|) (* 4 v_main_~i~0_BEFORE_CALL_425)))) (<= 0 v_main_~i~0_BEFORE_CALL_425) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_425 ~N~0)))) (<= __VERIFIER_assert_~cond 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)) [2019-10-07 00:37:58,836 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 199#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 00:37:58,836 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertEXIT satisfy 185#(and (exists ((|v_main_~#a~0.base_BEFORE_CALL_311| Int) (v_main_~i~0_BEFORE_CALL_425 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_425) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= v_main_~i~0_BEFORE_CALL_425 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_311|) (* 4 v_main_~i~0_BEFORE_CALL_425))) (< v_main_~i~0_BEFORE_CALL_425 ~N~0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (not (= v_main_~i~0_BEFORE_CALL_425 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_311|) (* 4 v_main_~i~0_BEFORE_CALL_425)))) (<= 0 v_main_~i~0_BEFORE_CALL_425) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_425 ~N~0)))) (not (= 0 __VERIFIER_assert_~cond)) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:37:58,837 INFO L193 IcfgInterpreter]: Reachable states at location L18-2 satisfy 148#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:37:58,837 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:37:58,837 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (<= 0 ~N~0) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:37:58,837 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 204#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:37:58,837 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 00:37:58,837 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 195#(and (exists ((|v_main_~#a~0.base_BEFORE_CALL_311| Int) (v_main_~i~0_BEFORE_CALL_425 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_425) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= v_main_~i~0_BEFORE_CALL_425 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_311|) (* 4 v_main_~i~0_BEFORE_CALL_425))) (< v_main_~i~0_BEFORE_CALL_425 ~N~0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (not (= v_main_~i~0_BEFORE_CALL_425 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_311|) (* 4 v_main_~i~0_BEFORE_CALL_425)))) (<= 0 v_main_~i~0_BEFORE_CALL_425) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_425 ~N~0)))) (<= __VERIFIER_assert_~cond 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)) [2019-10-07 00:37:58,837 INFO L193 IcfgInterpreter]: Reachable states at location L7 satisfy 38#(and (= 0 |#NULL.base|) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (<= 0 (+ ~N~0 2147483648)) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:37:58,838 INFO L193 IcfgInterpreter]: Reachable states at location L19-1 satisfy 166#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= |main_#t~mem1| 2147483647) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (= main_~i~0 |main_#t~mem1|) (<= 0 |main_#t~mem1|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:37:58,838 INFO L193 IcfgInterpreter]: Reachable states at location L19 satisfy 153#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:37:58,838 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 170#(exists ((|v_main_~#a~0.base_BEFORE_CALL_311| Int) (v_main_~i~0_BEFORE_CALL_425 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_425) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= v_main_~i~0_BEFORE_CALL_425 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_311|) (* 4 v_main_~i~0_BEFORE_CALL_425))) (< v_main_~i~0_BEFORE_CALL_425 ~N~0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (not (= v_main_~i~0_BEFORE_CALL_425 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_311|) (* 4 v_main_~i~0_BEFORE_CALL_425)))) (<= 0 v_main_~i~0_BEFORE_CALL_425) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_425 ~N~0)))) [2019-10-07 00:37:58,838 INFO L193 IcfgInterpreter]: Reachable states at location L2-3 satisfy 180#(and (exists ((|v_main_~#a~0.base_BEFORE_CALL_311| Int) (v_main_~i~0_BEFORE_CALL_425 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_425) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= v_main_~i~0_BEFORE_CALL_425 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_311|) (* 4 v_main_~i~0_BEFORE_CALL_425))) (< v_main_~i~0_BEFORE_CALL_425 ~N~0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (not (= v_main_~i~0_BEFORE_CALL_425 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_311|) (* 4 v_main_~i~0_BEFORE_CALL_425)))) (<= 0 v_main_~i~0_BEFORE_CALL_425) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_425 ~N~0)))) (not (= 0 __VERIFIER_assert_~cond)) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:37:58,838 INFO L193 IcfgInterpreter]: Reachable states at location L12-2 satisfy 76#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (<= 0 main_~i~0) (= 0 |#NULL.base|) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (= |#valid| (store |old(#valid)| |main_~#a~0.base| 1)) (<= 0 (+ ~N~0 2147483648)) (= main_~k~0 0) (<= main_~k~0 0) (= |main_~#a~0.offset| 0) (<= ~N~0 2147483647) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= main_~i~0 0) (< 0 ~N~0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (= (store |old(#length)| |main_~#a~0.base| (* 4 ~N~0)) |#length|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0)) [2019-10-07 00:38:01,130 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 00:38:01,130 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 31, 30, 12] total 96 [2019-10-07 00:38:01,131 INFO L442 AbstractCegarLoop]: Interpolant automaton has 96 states [2019-10-07 00:38:01,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2019-10-07 00:38:01,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=8488, Unknown=0, NotChecked=0, Total=9120 [2019-10-07 00:38:01,132 INFO L87 Difference]: Start difference. First operand 66 states and 77 transitions. Second operand 96 states. [2019-10-07 00:38:05,067 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2019-10-07 00:38:15,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:38:15,893 INFO L93 Difference]: Finished difference Result 121 states and 145 transitions. [2019-10-07 00:38:15,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2019-10-07 00:38:15,896 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 101 [2019-10-07 00:38:15,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:38:15,897 INFO L225 Difference]: With dead ends: 121 [2019-10-07 00:38:15,897 INFO L226 Difference]: Without dead ends: 72 [2019-10-07 00:38:15,899 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 206 SyntacticMatches, 33 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11689 ImplicationChecksByTransitivity, 17.0s TimeCoverageRelationStatistics Valid=2697, Invalid=34359, Unknown=0, NotChecked=0, Total=37056 [2019-10-07 00:38:15,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2019-10-07 00:38:15,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2019-10-07 00:38:15,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2019-10-07 00:38:15,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 82 transitions. [2019-10-07 00:38:15,920 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 82 transitions. Word has length 101 [2019-10-07 00:38:15,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:38:15,920 INFO L462 AbstractCegarLoop]: Abstraction has 70 states and 82 transitions. [2019-10-07 00:38:15,920 INFO L463 AbstractCegarLoop]: Interpolant automaton has 96 states. [2019-10-07 00:38:15,920 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 82 transitions. [2019-10-07 00:38:15,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2019-10-07 00:38:15,921 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:38:15,921 INFO L385 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:38:16,126 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:38:16,127 INFO L410 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:38:16,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:38:16,127 INFO L82 PathProgramCache]: Analyzing trace with hash -176042503, now seen corresponding path program 21 times [2019-10-07 00:38:16,127 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:38:16,128 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:38:16,128 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:38:16,128 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:38:16,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:38:16,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:38:17,083 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 24 proven. 313 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2019-10-07 00:38:17,083 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:38:17,083 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:38:17,083 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 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:38:17,379 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-07 00:38:17,379 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-07 00:38:17,381 INFO L256 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 63 conjunts are in the unsatisfiable core [2019-10-07 00:38:17,383 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:38:19,091 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 0 proven. 337 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2019-10-07 00:38:19,091 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:38:20,438 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 24 proven. 313 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2019-10-07 00:38:20,438 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:38:20,439 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-07 00:38:20,439 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:38:20,439 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:38:20,440 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:38:20,440 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:38:20,458 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-07 00:38:20,678 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2019-10-07 00:38:20,690 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-10-07 00:38:20,694 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 00:38:20,694 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 00:38:20,694 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 175#(and (exists ((|v_main_~#a~0.base_BEFORE_CALL_344| Int) (v_main_~i~0_BEFORE_CALL_459 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (< v_main_~i~0_BEFORE_CALL_459 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= v_main_~i~0_BEFORE_CALL_459 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_344|) (* 4 v_main_~i~0_BEFORE_CALL_459))) (<= 0 v_main_~i~0_BEFORE_CALL_459) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (not (= v_main_~i~0_BEFORE_CALL_459 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_344|) (* 4 v_main_~i~0_BEFORE_CALL_459)))) (< v_main_~i~0_BEFORE_CALL_459 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_459) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:38:20,695 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 190#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_main_~#a~0.base_BEFORE_CALL_344| Int) (v_main_~i~0_BEFORE_CALL_459 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (< v_main_~i~0_BEFORE_CALL_459 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= v_main_~i~0_BEFORE_CALL_459 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_344|) (* 4 v_main_~i~0_BEFORE_CALL_459))) (<= 0 v_main_~i~0_BEFORE_CALL_459) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (not (= v_main_~i~0_BEFORE_CALL_459 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_344|) (* 4 v_main_~i~0_BEFORE_CALL_459)))) (< v_main_~i~0_BEFORE_CALL_459 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_459) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:38:20,695 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 199#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 00:38:20,695 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertEXIT satisfy 185#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((|v_main_~#a~0.base_BEFORE_CALL_344| Int) (v_main_~i~0_BEFORE_CALL_459 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (< v_main_~i~0_BEFORE_CALL_459 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= v_main_~i~0_BEFORE_CALL_459 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_344|) (* 4 v_main_~i~0_BEFORE_CALL_459))) (<= 0 v_main_~i~0_BEFORE_CALL_459) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (not (= v_main_~i~0_BEFORE_CALL_459 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_344|) (* 4 v_main_~i~0_BEFORE_CALL_459)))) (< v_main_~i~0_BEFORE_CALL_459 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_459) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:38:20,695 INFO L193 IcfgInterpreter]: Reachable states at location L18-2 satisfy 148#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:38:20,695 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:38:20,696 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 |old(~N~0)|) (<= 0 ~N~0) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:38:20,696 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 204#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:38:20,696 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 00:38:20,696 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 195#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_main_~#a~0.base_BEFORE_CALL_344| Int) (v_main_~i~0_BEFORE_CALL_459 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (< v_main_~i~0_BEFORE_CALL_459 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= v_main_~i~0_BEFORE_CALL_459 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_344|) (* 4 v_main_~i~0_BEFORE_CALL_459))) (<= 0 v_main_~i~0_BEFORE_CALL_459) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (not (= v_main_~i~0_BEFORE_CALL_459 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_344|) (* 4 v_main_~i~0_BEFORE_CALL_459)))) (< v_main_~i~0_BEFORE_CALL_459 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_459) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:38:20,696 INFO L193 IcfgInterpreter]: Reachable states at location L7 satisfy 38#(and (= 0 |#NULL.base|) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 |old(~N~0)|) (<= 0 (+ ~N~0 2147483648)) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:38:20,697 INFO L193 IcfgInterpreter]: Reachable states at location L19-1 satisfy 166#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= |main_#t~mem1| 2147483647) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (= main_~i~0 |main_#t~mem1|) (<= 0 |main_#t~mem1|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:38:20,697 INFO L193 IcfgInterpreter]: Reachable states at location L19 satisfy 153#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:38:20,697 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 170#(exists ((|v_main_~#a~0.base_BEFORE_CALL_344| Int) (v_main_~i~0_BEFORE_CALL_459 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (< v_main_~i~0_BEFORE_CALL_459 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= v_main_~i~0_BEFORE_CALL_459 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_344|) (* 4 v_main_~i~0_BEFORE_CALL_459))) (<= 0 v_main_~i~0_BEFORE_CALL_459) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (not (= v_main_~i~0_BEFORE_CALL_459 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_344|) (* 4 v_main_~i~0_BEFORE_CALL_459)))) (< v_main_~i~0_BEFORE_CALL_459 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_459) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-07 00:38:20,697 INFO L193 IcfgInterpreter]: Reachable states at location L2-3 satisfy 180#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((|v_main_~#a~0.base_BEFORE_CALL_344| Int) (v_main_~i~0_BEFORE_CALL_459 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (< v_main_~i~0_BEFORE_CALL_459 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= v_main_~i~0_BEFORE_CALL_459 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_344|) (* 4 v_main_~i~0_BEFORE_CALL_459))) (<= 0 v_main_~i~0_BEFORE_CALL_459) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (not (= v_main_~i~0_BEFORE_CALL_459 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_344|) (* 4 v_main_~i~0_BEFORE_CALL_459)))) (< v_main_~i~0_BEFORE_CALL_459 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_459) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:38:20,697 INFO L193 IcfgInterpreter]: Reachable states at location L12-2 satisfy 76#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (<= 0 main_~i~0) (= 0 |#NULL.base|) (<= 0 |#NULL.base|) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (<= 0 |#NULL.offset|) (= |#valid| (store |old(#valid)| |main_~#a~0.base| 1)) (<= 0 (+ ~N~0 2147483648)) (= main_~k~0 0) (<= main_~k~0 0) (= |main_~#a~0.offset| 0) (<= ~N~0 2147483647) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= |main_~#a~0.offset| 0) (<= main_~i~0 0) (< 0 ~N~0) (= 0 (select |old(#valid)| 0)) (<= |#NULL.offset| 0) (= 0 |old(~N~0)|) (<= 0 ~N~0) (= (store |old(#length)| |main_~#a~0.base| (* 4 ~N~0)) |#length|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0)) [2019-10-07 00:38:23,251 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 00:38:23,251 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 33, 32, 12] total 87 [2019-10-07 00:38:23,252 INFO L442 AbstractCegarLoop]: Interpolant automaton has 87 states [2019-10-07 00:38:23,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2019-10-07 00:38:23,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=7198, Unknown=0, NotChecked=0, Total=7482 [2019-10-07 00:38:23,253 INFO L87 Difference]: Start difference. First operand 70 states and 82 transitions. Second operand 87 states. [2019-10-07 00:38:32,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:38:32,827 INFO L93 Difference]: Finished difference Result 78 states and 91 transitions. [2019-10-07 00:38:32,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2019-10-07 00:38:32,827 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 109 [2019-10-07 00:38:32,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:38:32,829 INFO L225 Difference]: With dead ends: 78 [2019-10-07 00:38:32,829 INFO L226 Difference]: Without dead ends: 76 [2019-10-07 00:38:32,830 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 230 SyntacticMatches, 44 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5236 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=954, Invalid=20508, Unknown=0, NotChecked=0, Total=21462 [2019-10-07 00:38:32,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2019-10-07 00:38:32,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 73. [2019-10-07 00:38:32,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2019-10-07 00:38:32,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 86 transitions. [2019-10-07 00:38:32,849 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 86 transitions. Word has length 109 [2019-10-07 00:38:32,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:38:32,850 INFO L462 AbstractCegarLoop]: Abstraction has 73 states and 86 transitions. [2019-10-07 00:38:32,850 INFO L463 AbstractCegarLoop]: Interpolant automaton has 87 states. [2019-10-07 00:38:32,850 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 86 transitions. [2019-10-07 00:38:32,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-10-07 00:38:32,851 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:38:32,851 INFO L385 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:38:33,056 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:38:33,056 INFO L410 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:38:33,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:38:33,057 INFO L82 PathProgramCache]: Analyzing trace with hash -2087448206, now seen corresponding path program 22 times [2019-10-07 00:38:33,057 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:38:33,058 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:38:33,058 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:38:33,058 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:38:33,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:38:33,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:38:33,433 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 249 proven. 128 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2019-10-07 00:38:33,434 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:38:33,434 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:38:33,434 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 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:38:33,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:38:33,834 INFO L256 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 30 conjunts are in the unsatisfiable core [2019-10-07 00:38:33,837 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:38:34,367 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 286 proven. 91 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2019-10-07 00:38:34,368 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:38:34,759 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 286 proven. 91 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2019-10-07 00:38:34,760 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:38:34,769 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-07 00:38:34,770 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:38:34,770 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:38:34,771 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:38:34,771 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:38:34,789 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-07 00:38:35,121 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2019-10-07 00:38:35,132 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-10-07 00:38:35,137 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 00:38:35,137 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 00:38:35,137 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 175#(and (exists ((v_main_~i~0_BEFORE_CALL_494 Int) (|v_main_~#a~0.base_BEFORE_CALL_353| Int)) (or (and (= |#NULL.base| 0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_353|) (* 4 v_main_~i~0_BEFORE_CALL_494)) v_main_~i~0_BEFORE_CALL_494) (<= 0 v_main_~i~0_BEFORE_CALL_494) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_494 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_494) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_353|) (* 4 v_main_~i~0_BEFORE_CALL_494)) v_main_~i~0_BEFORE_CALL_494)) (< v_main_~i~0_BEFORE_CALL_494 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:38:35,138 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 190#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_main_~i~0_BEFORE_CALL_494 Int) (|v_main_~#a~0.base_BEFORE_CALL_353| Int)) (or (and (= |#NULL.base| 0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_353|) (* 4 v_main_~i~0_BEFORE_CALL_494)) v_main_~i~0_BEFORE_CALL_494) (<= 0 v_main_~i~0_BEFORE_CALL_494) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_494 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_494) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_353|) (* 4 v_main_~i~0_BEFORE_CALL_494)) v_main_~i~0_BEFORE_CALL_494)) (< v_main_~i~0_BEFORE_CALL_494 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:38:35,138 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 199#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 00:38:35,138 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertEXIT satisfy 185#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((v_main_~i~0_BEFORE_CALL_494 Int) (|v_main_~#a~0.base_BEFORE_CALL_353| Int)) (or (and (= |#NULL.base| 0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_353|) (* 4 v_main_~i~0_BEFORE_CALL_494)) v_main_~i~0_BEFORE_CALL_494) (<= 0 v_main_~i~0_BEFORE_CALL_494) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_494 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_494) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_353|) (* 4 v_main_~i~0_BEFORE_CALL_494)) v_main_~i~0_BEFORE_CALL_494)) (< v_main_~i~0_BEFORE_CALL_494 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:38:35,139 INFO L193 IcfgInterpreter]: Reachable states at location L18-2 satisfy 148#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:38:35,139 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:38:35,139 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (<= 0 ~N~0) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#memory_int| |old(#memory_int)|) (<= |old(~N~0)| 0) (<= 0 |old(~N~0)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:38:35,140 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 204#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:38:35,140 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 00:38:35,140 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 195#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_main_~i~0_BEFORE_CALL_494 Int) (|v_main_~#a~0.base_BEFORE_CALL_353| Int)) (or (and (= |#NULL.base| 0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_353|) (* 4 v_main_~i~0_BEFORE_CALL_494)) v_main_~i~0_BEFORE_CALL_494) (<= 0 v_main_~i~0_BEFORE_CALL_494) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_494 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_494) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_353|) (* 4 v_main_~i~0_BEFORE_CALL_494)) v_main_~i~0_BEFORE_CALL_494)) (< v_main_~i~0_BEFORE_CALL_494 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:38:35,141 INFO L193 IcfgInterpreter]: Reachable states at location L7 satisfy 38#(and (= 0 |#NULL.base|) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (<= 0 (+ ~N~0 2147483648)) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (<= |old(~N~0)| 0) (<= 0 |old(~N~0)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:38:35,141 INFO L193 IcfgInterpreter]: Reachable states at location L19-1 satisfy 166#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= |main_#t~mem1| 2147483647) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (= main_~i~0 |main_#t~mem1|) (<= 0 |main_#t~mem1|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:38:35,141 INFO L193 IcfgInterpreter]: Reachable states at location L19 satisfy 153#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:38:35,141 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 170#(exists ((v_main_~i~0_BEFORE_CALL_494 Int) (|v_main_~#a~0.base_BEFORE_CALL_353| Int)) (or (and (= |#NULL.base| 0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_353|) (* 4 v_main_~i~0_BEFORE_CALL_494)) v_main_~i~0_BEFORE_CALL_494) (<= 0 v_main_~i~0_BEFORE_CALL_494) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_494 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_494) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_353|) (* 4 v_main_~i~0_BEFORE_CALL_494)) v_main_~i~0_BEFORE_CALL_494)) (< v_main_~i~0_BEFORE_CALL_494 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-07 00:38:35,142 INFO L193 IcfgInterpreter]: Reachable states at location L2-3 satisfy 180#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((v_main_~i~0_BEFORE_CALL_494 Int) (|v_main_~#a~0.base_BEFORE_CALL_353| Int)) (or (and (= |#NULL.base| 0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_353|) (* 4 v_main_~i~0_BEFORE_CALL_494)) v_main_~i~0_BEFORE_CALL_494) (<= 0 v_main_~i~0_BEFORE_CALL_494) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_494 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_494) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_353|) (* 4 v_main_~i~0_BEFORE_CALL_494)) v_main_~i~0_BEFORE_CALL_494)) (< v_main_~i~0_BEFORE_CALL_494 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:38:35,142 INFO L193 IcfgInterpreter]: Reachable states at location L12-2 satisfy 76#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (<= 0 main_~i~0) (= 0 |#NULL.base|) (<= 0 |#NULL.base|) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (= |#valid| (store |old(#valid)| |main_~#a~0.base| 1)) (<= 0 (+ ~N~0 2147483648)) (= main_~k~0 0) (<= main_~k~0 0) (= |main_~#a~0.offset| 0) (<= ~N~0 2147483647) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= |main_~#a~0.offset| 0) (<= main_~i~0 0) (< 0 ~N~0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (= (store |old(#length)| |main_~#a~0.base| (* 4 ~N~0)) |#length|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0)) [2019-10-07 00:38:36,737 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 00:38:36,737 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 31, 30, 12] total 59 [2019-10-07 00:38:36,738 INFO L442 AbstractCegarLoop]: Interpolant automaton has 59 states [2019-10-07 00:38:36,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2019-10-07 00:38:36,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=554, Invalid=2868, Unknown=0, NotChecked=0, Total=3422 [2019-10-07 00:38:36,738 INFO L87 Difference]: Start difference. First operand 73 states and 86 transitions. Second operand 59 states. [2019-10-07 00:38:43,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:38:43,116 INFO L93 Difference]: Finished difference Result 135 states and 161 transitions. [2019-10-07 00:38:43,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2019-10-07 00:38:43,116 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 116 [2019-10-07 00:38:43,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:38:43,118 INFO L225 Difference]: With dead ends: 135 [2019-10-07 00:38:43,118 INFO L226 Difference]: Without dead ends: 78 [2019-10-07 00:38:43,119 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 280 SyntacticMatches, 40 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8927 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=3445, Invalid=18607, Unknown=0, NotChecked=0, Total=22052 [2019-10-07 00:38:43,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2019-10-07 00:38:43,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 74. [2019-10-07 00:38:43,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2019-10-07 00:38:43,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 87 transitions. [2019-10-07 00:38:43,137 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 87 transitions. Word has length 116 [2019-10-07 00:38:43,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:38:43,137 INFO L462 AbstractCegarLoop]: Abstraction has 74 states and 87 transitions. [2019-10-07 00:38:43,137 INFO L463 AbstractCegarLoop]: Interpolant automaton has 59 states. [2019-10-07 00:38:43,137 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 87 transitions. [2019-10-07 00:38:43,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-10-07 00:38:43,138 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:38:43,138 INFO L385 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:38:43,339 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:38:43,339 INFO L410 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:38:43,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:38:43,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1553064051, now seen corresponding path program 23 times [2019-10-07 00:38:43,340 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:38:43,340 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:38:43,340 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:38:43,340 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:38:43,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:38:43,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:38:44,153 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 26 proven. 365 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2019-10-07 00:38:44,153 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:38:44,153 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:38:44,153 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 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:38:44,814 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2019-10-07 00:38:44,815 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-07 00:38:44,818 INFO L256 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 70 conjunts are in the unsatisfiable core [2019-10-07 00:38:44,820 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:38:46,880 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 36 proven. 391 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2019-10-07 00:38:46,880 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:38:47,090 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 26 proven. 365 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2019-10-07 00:38:47,090 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:38:47,091 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-07 00:38:47,091 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:38:47,091 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:38:47,092 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:38:47,092 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:38:47,120 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 25 for LOIs [2019-10-07 00:38:47,341 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2019-10-07 00:38:47,357 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-10-07 00:38:47,359 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 00:38:47,360 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 00:38:47,360 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 175#(and (exists ((|v_main_~#a~0.base_BEFORE_CALL_388| Int) (v_main_~i~0_BEFORE_CALL_530 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_388|) (* 4 v_main_~i~0_BEFORE_CALL_530)) v_main_~i~0_BEFORE_CALL_530) (<= 0 v_main_~i~0_BEFORE_CALL_530) (< v_main_~i~0_BEFORE_CALL_530 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_388|) (* 4 v_main_~i~0_BEFORE_CALL_530)) v_main_~i~0_BEFORE_CALL_530)) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_530) (< v_main_~i~0_BEFORE_CALL_530 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:38:47,360 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 190#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_main_~#a~0.base_BEFORE_CALL_388| Int) (v_main_~i~0_BEFORE_CALL_530 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_388|) (* 4 v_main_~i~0_BEFORE_CALL_530)) v_main_~i~0_BEFORE_CALL_530) (<= 0 v_main_~i~0_BEFORE_CALL_530) (< v_main_~i~0_BEFORE_CALL_530 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_388|) (* 4 v_main_~i~0_BEFORE_CALL_530)) v_main_~i~0_BEFORE_CALL_530)) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_530) (< v_main_~i~0_BEFORE_CALL_530 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:38:47,360 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 199#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 00:38:47,361 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertEXIT satisfy 185#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((|v_main_~#a~0.base_BEFORE_CALL_388| Int) (v_main_~i~0_BEFORE_CALL_530 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_388|) (* 4 v_main_~i~0_BEFORE_CALL_530)) v_main_~i~0_BEFORE_CALL_530) (<= 0 v_main_~i~0_BEFORE_CALL_530) (< v_main_~i~0_BEFORE_CALL_530 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_388|) (* 4 v_main_~i~0_BEFORE_CALL_530)) v_main_~i~0_BEFORE_CALL_530)) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_530) (< v_main_~i~0_BEFORE_CALL_530 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:38:47,361 INFO L193 IcfgInterpreter]: Reachable states at location L18-2 satisfy 148#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:38:47,361 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:38:47,361 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (<= 0 ~N~0) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:38:47,361 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 204#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:38:47,362 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 00:38:47,362 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 195#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_main_~#a~0.base_BEFORE_CALL_388| Int) (v_main_~i~0_BEFORE_CALL_530 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_388|) (* 4 v_main_~i~0_BEFORE_CALL_530)) v_main_~i~0_BEFORE_CALL_530) (<= 0 v_main_~i~0_BEFORE_CALL_530) (< v_main_~i~0_BEFORE_CALL_530 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_388|) (* 4 v_main_~i~0_BEFORE_CALL_530)) v_main_~i~0_BEFORE_CALL_530)) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_530) (< v_main_~i~0_BEFORE_CALL_530 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:38:47,362 INFO L193 IcfgInterpreter]: Reachable states at location L7 satisfy 38#(and (= 0 |#NULL.base|) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (<= 0 (+ ~N~0 2147483648)) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:38:47,362 INFO L193 IcfgInterpreter]: Reachable states at location L19-1 satisfy 166#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= |main_#t~mem1| 2147483647) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (= main_~i~0 |main_#t~mem1|) (<= 0 |main_#t~mem1|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:38:47,362 INFO L193 IcfgInterpreter]: Reachable states at location L19 satisfy 153#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:38:47,363 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 170#(exists ((|v_main_~#a~0.base_BEFORE_CALL_388| Int) (v_main_~i~0_BEFORE_CALL_530 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_388|) (* 4 v_main_~i~0_BEFORE_CALL_530)) v_main_~i~0_BEFORE_CALL_530) (<= 0 v_main_~i~0_BEFORE_CALL_530) (< v_main_~i~0_BEFORE_CALL_530 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_388|) (* 4 v_main_~i~0_BEFORE_CALL_530)) v_main_~i~0_BEFORE_CALL_530)) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_530) (< v_main_~i~0_BEFORE_CALL_530 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-07 00:38:47,363 INFO L193 IcfgInterpreter]: Reachable states at location L2-3 satisfy 180#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((|v_main_~#a~0.base_BEFORE_CALL_388| Int) (v_main_~i~0_BEFORE_CALL_530 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_388|) (* 4 v_main_~i~0_BEFORE_CALL_530)) v_main_~i~0_BEFORE_CALL_530) (<= 0 v_main_~i~0_BEFORE_CALL_530) (< v_main_~i~0_BEFORE_CALL_530 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_388|) (* 4 v_main_~i~0_BEFORE_CALL_530)) v_main_~i~0_BEFORE_CALL_530)) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_530) (< v_main_~i~0_BEFORE_CALL_530 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:38:47,363 INFO L193 IcfgInterpreter]: Reachable states at location L12-2 satisfy 76#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (<= 0 main_~i~0) (= 0 |#NULL.base|) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (= |#valid| (store |old(#valid)| |main_~#a~0.base| 1)) (<= 0 (+ ~N~0 2147483648)) (= main_~k~0 0) (<= main_~k~0 0) (= |main_~#a~0.offset| 0) (<= ~N~0 2147483647) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= main_~i~0 0) (< 0 ~N~0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (= (store |old(#length)| |main_~#a~0.base| (* 4 ~N~0)) |#length|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0)) [2019-10-07 00:38:49,636 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 00:38:49,636 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 37, 34, 12] total 66 [2019-10-07 00:38:49,638 INFO L442 AbstractCegarLoop]: Interpolant automaton has 66 states [2019-10-07 00:38:49,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2019-10-07 00:38:49,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=4094, Unknown=0, NotChecked=0, Total=4290 [2019-10-07 00:38:49,639 INFO L87 Difference]: Start difference. First operand 74 states and 87 transitions. Second operand 66 states. [2019-10-07 00:38:57,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:38:57,573 INFO L93 Difference]: Finished difference Result 82 states and 96 transitions. [2019-10-07 00:38:57,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2019-10-07 00:38:57,573 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 117 [2019-10-07 00:38:57,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:38:57,575 INFO L225 Difference]: With dead ends: 82 [2019-10-07 00:38:57,575 INFO L226 Difference]: Without dead ends: 80 [2019-10-07 00:38:57,576 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 277 SyntacticMatches, 44 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4439 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=808, Invalid=15962, Unknown=0, NotChecked=0, Total=16770 [2019-10-07 00:38:57,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2019-10-07 00:38:57,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 77. [2019-10-07 00:38:57,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2019-10-07 00:38:57,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 91 transitions. [2019-10-07 00:38:57,598 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 91 transitions. Word has length 117 [2019-10-07 00:38:57,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:38:57,598 INFO L462 AbstractCegarLoop]: Abstraction has 77 states and 91 transitions. [2019-10-07 00:38:57,598 INFO L463 AbstractCegarLoop]: Interpolant automaton has 66 states. [2019-10-07 00:38:57,598 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 91 transitions. [2019-10-07 00:38:57,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-10-07 00:38:57,599 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:38:57,600 INFO L385 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:38:57,804 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:38:57,805 INFO L410 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:38:57,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:38:57,805 INFO L82 PathProgramCache]: Analyzing trace with hash -511143586, now seen corresponding path program 24 times [2019-10-07 00:38:57,805 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:38:57,806 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:38:57,806 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:38:57,806 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:38:57,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:38:57,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:38:58,219 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 289 proven. 145 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2019-10-07 00:38:58,219 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:38:58,220 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:38:58,220 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 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:38:58,577 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-07 00:38:58,577 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-07 00:38:58,579 INFO L256 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 32 conjunts are in the unsatisfiable core [2019-10-07 00:38:58,581 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:38:59,013 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 329 proven. 105 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2019-10-07 00:38:59,013 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:38:59,356 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 329 proven. 105 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2019-10-07 00:38:59,356 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:38:59,357 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-07 00:38:59,357 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:38:59,357 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:38:59,358 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:38:59,358 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:38:59,376 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 25 for LOIs [2019-10-07 00:38:59,568 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2019-10-07 00:38:59,574 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-10-07 00:38:59,577 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 00:38:59,577 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 00:38:59,578 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 175#(and (exists ((v_main_~i~0_BEFORE_CALL_567 Int) (|v_main_~#a~0.base_BEFORE_CALL_397| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= 0 v_main_~i~0_BEFORE_CALL_567) (<= ~N~0 2147483647) (<= 0 ~N~0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_397|) (* 4 v_main_~i~0_BEFORE_CALL_567)) v_main_~i~0_BEFORE_CALL_567) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_567 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_397|) (* 4 v_main_~i~0_BEFORE_CALL_567)) v_main_~i~0_BEFORE_CALL_567)) (<= 0 v_main_~i~0_BEFORE_CALL_567) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_567 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:38:59,578 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 190#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_main_~i~0_BEFORE_CALL_567 Int) (|v_main_~#a~0.base_BEFORE_CALL_397| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= 0 v_main_~i~0_BEFORE_CALL_567) (<= ~N~0 2147483647) (<= 0 ~N~0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_397|) (* 4 v_main_~i~0_BEFORE_CALL_567)) v_main_~i~0_BEFORE_CALL_567) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_567 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_397|) (* 4 v_main_~i~0_BEFORE_CALL_567)) v_main_~i~0_BEFORE_CALL_567)) (<= 0 v_main_~i~0_BEFORE_CALL_567) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_567 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:38:59,578 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 199#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 00:38:59,578 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertEXIT satisfy 185#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((v_main_~i~0_BEFORE_CALL_567 Int) (|v_main_~#a~0.base_BEFORE_CALL_397| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= 0 v_main_~i~0_BEFORE_CALL_567) (<= ~N~0 2147483647) (<= 0 ~N~0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_397|) (* 4 v_main_~i~0_BEFORE_CALL_567)) v_main_~i~0_BEFORE_CALL_567) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_567 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_397|) (* 4 v_main_~i~0_BEFORE_CALL_567)) v_main_~i~0_BEFORE_CALL_567)) (<= 0 v_main_~i~0_BEFORE_CALL_567) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_567 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:38:59,578 INFO L193 IcfgInterpreter]: Reachable states at location L18-2 satisfy 148#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:38:59,579 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:38:59,579 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 |old(~N~0)|) (<= 0 ~N~0) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:38:59,579 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 204#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:38:59,579 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 00:38:59,579 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 195#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_main_~i~0_BEFORE_CALL_567 Int) (|v_main_~#a~0.base_BEFORE_CALL_397| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= 0 v_main_~i~0_BEFORE_CALL_567) (<= ~N~0 2147483647) (<= 0 ~N~0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_397|) (* 4 v_main_~i~0_BEFORE_CALL_567)) v_main_~i~0_BEFORE_CALL_567) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_567 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_397|) (* 4 v_main_~i~0_BEFORE_CALL_567)) v_main_~i~0_BEFORE_CALL_567)) (<= 0 v_main_~i~0_BEFORE_CALL_567) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_567 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:38:59,579 INFO L193 IcfgInterpreter]: Reachable states at location L7 satisfy 38#(and (= 0 |#NULL.base|) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 |old(~N~0)|) (<= 0 (+ ~N~0 2147483648)) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:38:59,580 INFO L193 IcfgInterpreter]: Reachable states at location L19-1 satisfy 166#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= |main_#t~mem1| 2147483647) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (= main_~i~0 |main_#t~mem1|) (<= 0 |main_#t~mem1|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:38:59,580 INFO L193 IcfgInterpreter]: Reachable states at location L19 satisfy 153#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:38:59,580 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 170#(exists ((v_main_~i~0_BEFORE_CALL_567 Int) (|v_main_~#a~0.base_BEFORE_CALL_397| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= 0 v_main_~i~0_BEFORE_CALL_567) (<= ~N~0 2147483647) (<= 0 ~N~0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_397|) (* 4 v_main_~i~0_BEFORE_CALL_567)) v_main_~i~0_BEFORE_CALL_567) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_567 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_397|) (* 4 v_main_~i~0_BEFORE_CALL_567)) v_main_~i~0_BEFORE_CALL_567)) (<= 0 v_main_~i~0_BEFORE_CALL_567) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_567 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-07 00:38:59,580 INFO L193 IcfgInterpreter]: Reachable states at location L2-3 satisfy 180#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((v_main_~i~0_BEFORE_CALL_567 Int) (|v_main_~#a~0.base_BEFORE_CALL_397| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= 0 v_main_~i~0_BEFORE_CALL_567) (<= ~N~0 2147483647) (<= 0 ~N~0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_397|) (* 4 v_main_~i~0_BEFORE_CALL_567)) v_main_~i~0_BEFORE_CALL_567) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_567 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_397|) (* 4 v_main_~i~0_BEFORE_CALL_567)) v_main_~i~0_BEFORE_CALL_567)) (<= 0 v_main_~i~0_BEFORE_CALL_567) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_567 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:38:59,580 INFO L193 IcfgInterpreter]: Reachable states at location L12-2 satisfy 76#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (<= 0 main_~i~0) (= 0 |#NULL.base|) (<= 0 |#NULL.base|) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (= |#valid| (store |old(#valid)| |main_~#a~0.base| 1)) (<= 0 (+ ~N~0 2147483648)) (= main_~k~0 0) (<= main_~k~0 0) (= |main_~#a~0.offset| 0) (<= ~N~0 2147483647) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= |main_~#a~0.offset| 0) (<= main_~i~0 0) (< 0 ~N~0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (= (store |old(#length)| |main_~#a~0.base| (* 4 ~N~0)) |#length|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0)) [2019-10-07 00:39:01,107 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 00:39:01,108 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 33, 32, 12] total 62 [2019-10-07 00:39:01,109 INFO L442 AbstractCegarLoop]: Interpolant automaton has 62 states [2019-10-07 00:39:01,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2019-10-07 00:39:01,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=620, Invalid=3162, Unknown=0, NotChecked=0, Total=3782 [2019-10-07 00:39:01,110 INFO L87 Difference]: Start difference. First operand 77 states and 91 transitions. Second operand 62 states. [2019-10-07 00:39:08,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:39:08,047 INFO L93 Difference]: Finished difference Result 142 states and 170 transitions. [2019-10-07 00:39:08,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2019-10-07 00:39:08,047 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 124 [2019-10-07 00:39:08,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:39:08,049 INFO L225 Difference]: With dead ends: 142 [2019-10-07 00:39:08,050 INFO L226 Difference]: Without dead ends: 82 [2019-10-07 00:39:08,052 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 300 SyntacticMatches, 43 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10101 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=3894, Invalid=20912, Unknown=0, NotChecked=0, Total=24806 [2019-10-07 00:39:08,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2019-10-07 00:39:08,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 78. [2019-10-07 00:39:08,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2019-10-07 00:39:08,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 92 transitions. [2019-10-07 00:39:08,072 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 92 transitions. Word has length 124 [2019-10-07 00:39:08,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:39:08,072 INFO L462 AbstractCegarLoop]: Abstraction has 78 states and 92 transitions. [2019-10-07 00:39:08,072 INFO L463 AbstractCegarLoop]: Interpolant automaton has 62 states. [2019-10-07 00:39:08,072 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 92 transitions. [2019-10-07 00:39:08,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-07 00:39:08,073 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:39:08,074 INFO L385 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:39:08,280 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:39:08,281 INFO L410 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:39:08,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:39:08,282 INFO L82 PathProgramCache]: Analyzing trace with hash -391359367, now seen corresponding path program 25 times [2019-10-07 00:39:08,282 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:39:08,282 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:39:08,282 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:39:08,283 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:39:08,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:39:08,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:39:09,108 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 28 proven. 421 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2019-10-07 00:39:09,108 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:39:09,109 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:39:09,109 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 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:39:09,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:39:09,492 INFO L256 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 71 conjunts are in the unsatisfiable core [2019-10-07 00:39:09,494 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:39:13,041 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 0 proven. 449 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2019-10-07 00:39:13,042 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:39:13,180 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 28 proven. 421 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2019-10-07 00:39:13,180 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:39:13,181 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-07 00:39:13,182 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:39:13,182 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:39:13,182 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:39:13,182 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:39:13,200 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 25 for LOIs [2019-10-07 00:39:13,437 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2019-10-07 00:39:13,445 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-10-07 00:39:13,448 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 00:39:13,449 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 00:39:13,449 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 175#(and (exists ((v_main_~i~0_BEFORE_CALL_605 Int) (|v_main_~#a~0.base_BEFORE_CALL_434| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= 0 v_main_~i~0_BEFORE_CALL_605) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_434|) (* 4 v_main_~i~0_BEFORE_CALL_605)) v_main_~i~0_BEFORE_CALL_605)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_605 ~N~0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= 0 v_main_~i~0_BEFORE_CALL_605) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_434|) (* 4 v_main_~i~0_BEFORE_CALL_605)) v_main_~i~0_BEFORE_CALL_605) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_605 ~N~0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:39:13,449 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 190#(and (<= __VERIFIER_assert_~cond 0) (exists ((v_main_~i~0_BEFORE_CALL_605 Int) (|v_main_~#a~0.base_BEFORE_CALL_434| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= 0 v_main_~i~0_BEFORE_CALL_605) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_434|) (* 4 v_main_~i~0_BEFORE_CALL_605)) v_main_~i~0_BEFORE_CALL_605)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_605 ~N~0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= 0 v_main_~i~0_BEFORE_CALL_605) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_434|) (* 4 v_main_~i~0_BEFORE_CALL_605)) v_main_~i~0_BEFORE_CALL_605) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_605 ~N~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)) [2019-10-07 00:39:13,449 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 199#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 00:39:13,450 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertEXIT satisfy 185#(and (exists ((v_main_~i~0_BEFORE_CALL_605 Int) (|v_main_~#a~0.base_BEFORE_CALL_434| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= 0 v_main_~i~0_BEFORE_CALL_605) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_434|) (* 4 v_main_~i~0_BEFORE_CALL_605)) v_main_~i~0_BEFORE_CALL_605)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_605 ~N~0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= 0 v_main_~i~0_BEFORE_CALL_605) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_434|) (* 4 v_main_~i~0_BEFORE_CALL_605)) v_main_~i~0_BEFORE_CALL_605) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_605 ~N~0)))) (not (= 0 __VERIFIER_assert_~cond)) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:39:13,450 INFO L193 IcfgInterpreter]: Reachable states at location L18-2 satisfy 148#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:39:13,450 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:39:13,450 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (<= 0 ~N~0) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:39:13,450 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 204#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:39:13,451 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 00:39:13,451 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 195#(and (<= __VERIFIER_assert_~cond 0) (exists ((v_main_~i~0_BEFORE_CALL_605 Int) (|v_main_~#a~0.base_BEFORE_CALL_434| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= 0 v_main_~i~0_BEFORE_CALL_605) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_434|) (* 4 v_main_~i~0_BEFORE_CALL_605)) v_main_~i~0_BEFORE_CALL_605)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_605 ~N~0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= 0 v_main_~i~0_BEFORE_CALL_605) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_434|) (* 4 v_main_~i~0_BEFORE_CALL_605)) v_main_~i~0_BEFORE_CALL_605) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_605 ~N~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)) [2019-10-07 00:39:13,451 INFO L193 IcfgInterpreter]: Reachable states at location L7 satisfy 38#(and (= 0 |#NULL.base|) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (<= 0 (+ ~N~0 2147483648)) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:39:13,451 INFO L193 IcfgInterpreter]: Reachable states at location L19-1 satisfy 166#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= |main_#t~mem1| 2147483647) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (= main_~i~0 |main_#t~mem1|) (<= 0 |main_#t~mem1|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:39:13,451 INFO L193 IcfgInterpreter]: Reachable states at location L19 satisfy 153#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:39:13,452 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 170#(exists ((v_main_~i~0_BEFORE_CALL_605 Int) (|v_main_~#a~0.base_BEFORE_CALL_434| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= 0 v_main_~i~0_BEFORE_CALL_605) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_434|) (* 4 v_main_~i~0_BEFORE_CALL_605)) v_main_~i~0_BEFORE_CALL_605)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_605 ~N~0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= 0 v_main_~i~0_BEFORE_CALL_605) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_434|) (* 4 v_main_~i~0_BEFORE_CALL_605)) v_main_~i~0_BEFORE_CALL_605) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_605 ~N~0)))) [2019-10-07 00:39:13,452 INFO L193 IcfgInterpreter]: Reachable states at location L2-3 satisfy 180#(and (exists ((v_main_~i~0_BEFORE_CALL_605 Int) (|v_main_~#a~0.base_BEFORE_CALL_434| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= 0 v_main_~i~0_BEFORE_CALL_605) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_434|) (* 4 v_main_~i~0_BEFORE_CALL_605)) v_main_~i~0_BEFORE_CALL_605)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_605 ~N~0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= 0 v_main_~i~0_BEFORE_CALL_605) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_434|) (* 4 v_main_~i~0_BEFORE_CALL_605)) v_main_~i~0_BEFORE_CALL_605) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_605 ~N~0)))) (not (= 0 __VERIFIER_assert_~cond)) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:39:13,452 INFO L193 IcfgInterpreter]: Reachable states at location L12-2 satisfy 76#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (<= 0 main_~i~0) (= 0 |#NULL.base|) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (= |#valid| (store |old(#valid)| |main_~#a~0.base| 1)) (<= 0 (+ ~N~0 2147483648)) (= main_~k~0 0) (<= main_~k~0 0) (= |main_~#a~0.offset| 0) (<= ~N~0 2147483647) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= main_~i~0 0) (< 0 ~N~0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (= (store |old(#length)| |main_~#a~0.base| (* 4 ~N~0)) |#length|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0)) [2019-10-07 00:39:16,464 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 00:39:16,464 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 37, 36, 12] total 84 [2019-10-07 00:39:16,465 INFO L442 AbstractCegarLoop]: Interpolant automaton has 84 states [2019-10-07 00:39:16,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2019-10-07 00:39:16,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=6706, Unknown=0, NotChecked=0, Total=6972 [2019-10-07 00:39:16,466 INFO L87 Difference]: Start difference. First operand 78 states and 92 transitions. Second operand 84 states. [2019-10-07 00:39:25,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:39:25,464 INFO L93 Difference]: Finished difference Result 86 states and 101 transitions. [2019-10-07 00:39:25,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2019-10-07 00:39:25,464 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 125 [2019-10-07 00:39:25,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:39:25,465 INFO L225 Difference]: With dead ends: 86 [2019-10-07 00:39:25,465 INFO L226 Difference]: Without dead ends: 84 [2019-10-07 00:39:25,467 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 285 SyntacticMatches, 44 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7242 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=977, Invalid=21975, Unknown=0, NotChecked=0, Total=22952 [2019-10-07 00:39:25,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2019-10-07 00:39:25,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 81. [2019-10-07 00:39:25,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2019-10-07 00:39:25,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 96 transitions. [2019-10-07 00:39:25,493 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 96 transitions. Word has length 125 [2019-10-07 00:39:25,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:39:25,494 INFO L462 AbstractCegarLoop]: Abstraction has 81 states and 96 transitions. [2019-10-07 00:39:25,494 INFO L463 AbstractCegarLoop]: Interpolant automaton has 84 states. [2019-10-07 00:39:25,494 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 96 transitions. [2019-10-07 00:39:25,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-10-07 00:39:25,495 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:39:25,495 INFO L385 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:39:25,704 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:39:25,704 INFO L410 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:39:25,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:39:25,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1530739442, now seen corresponding path program 26 times [2019-10-07 00:39:25,705 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:39:25,706 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:39:25,706 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:39:25,706 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:39:25,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:39:25,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:39:26,233 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 332 proven. 163 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2019-10-07 00:39:26,233 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:39:26,233 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:39:26,233 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 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:39:27,626 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2019-10-07 00:39:27,626 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-07 00:39:27,630 INFO L256 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 34 conjunts are in the unsatisfiable core [2019-10-07 00:39:27,633 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:39:28,107 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 375 proven. 120 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2019-10-07 00:39:28,107 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:39:28,491 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 375 proven. 120 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2019-10-07 00:39:28,492 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:39:28,493 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-07 00:39:28,493 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:39:28,493 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:39:28,493 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:39:28,493 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:39:28,509 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 25 for LOIs [2019-10-07 00:39:28,779 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2019-10-07 00:39:28,790 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-10-07 00:39:28,794 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 00:39:28,794 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 00:39:28,795 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 175#(and (exists ((v_main_~i~0_BEFORE_CALL_644 Int) (|v_main_~#a~0.base_BEFORE_CALL_443| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (< v_main_~i~0_BEFORE_CALL_644 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_644) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_443|) (* 4 v_main_~i~0_BEFORE_CALL_644)) v_main_~i~0_BEFORE_CALL_644) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_644 ~N~0) (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_443|) (* 4 v_main_~i~0_BEFORE_CALL_644)) v_main_~i~0_BEFORE_CALL_644)) (<= 0 v_main_~i~0_BEFORE_CALL_644) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:39:28,795 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 190#(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_main_~i~0_BEFORE_CALL_644 Int) (|v_main_~#a~0.base_BEFORE_CALL_443| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (< v_main_~i~0_BEFORE_CALL_644 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_644) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_443|) (* 4 v_main_~i~0_BEFORE_CALL_644)) v_main_~i~0_BEFORE_CALL_644) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_644 ~N~0) (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_443|) (* 4 v_main_~i~0_BEFORE_CALL_644)) v_main_~i~0_BEFORE_CALL_644)) (<= 0 v_main_~i~0_BEFORE_CALL_644) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:39:28,796 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 199#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 00:39:28,796 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertEXIT satisfy 185#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((v_main_~i~0_BEFORE_CALL_644 Int) (|v_main_~#a~0.base_BEFORE_CALL_443| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (< v_main_~i~0_BEFORE_CALL_644 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_644) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_443|) (* 4 v_main_~i~0_BEFORE_CALL_644)) v_main_~i~0_BEFORE_CALL_644) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_644 ~N~0) (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_443|) (* 4 v_main_~i~0_BEFORE_CALL_644)) v_main_~i~0_BEFORE_CALL_644)) (<= 0 v_main_~i~0_BEFORE_CALL_644) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:39:28,796 INFO L193 IcfgInterpreter]: Reachable states at location L18-2 satisfy 148#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:39:28,797 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:39:28,797 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 |old(~N~0)|) (<= 0 ~N~0) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:39:28,797 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 204#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:39:28,797 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 00:39:28,798 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 195#(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_main_~i~0_BEFORE_CALL_644 Int) (|v_main_~#a~0.base_BEFORE_CALL_443| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (< v_main_~i~0_BEFORE_CALL_644 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_644) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_443|) (* 4 v_main_~i~0_BEFORE_CALL_644)) v_main_~i~0_BEFORE_CALL_644) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_644 ~N~0) (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_443|) (* 4 v_main_~i~0_BEFORE_CALL_644)) v_main_~i~0_BEFORE_CALL_644)) (<= 0 v_main_~i~0_BEFORE_CALL_644) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:39:28,798 INFO L193 IcfgInterpreter]: Reachable states at location L7 satisfy 38#(and (= 0 |#NULL.base|) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 |old(~N~0)|) (<= 0 (+ ~N~0 2147483648)) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:39:28,798 INFO L193 IcfgInterpreter]: Reachable states at location L19-1 satisfy 166#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= |main_#t~mem1| 2147483647) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (= main_~i~0 |main_#t~mem1|) (<= 0 |main_#t~mem1|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:39:28,799 INFO L193 IcfgInterpreter]: Reachable states at location L19 satisfy 153#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:39:28,799 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 170#(exists ((v_main_~i~0_BEFORE_CALL_644 Int) (|v_main_~#a~0.base_BEFORE_CALL_443| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (< v_main_~i~0_BEFORE_CALL_644 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_644) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_443|) (* 4 v_main_~i~0_BEFORE_CALL_644)) v_main_~i~0_BEFORE_CALL_644) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_644 ~N~0) (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_443|) (* 4 v_main_~i~0_BEFORE_CALL_644)) v_main_~i~0_BEFORE_CALL_644)) (<= 0 v_main_~i~0_BEFORE_CALL_644) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-07 00:39:28,799 INFO L193 IcfgInterpreter]: Reachable states at location L2-3 satisfy 180#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((v_main_~i~0_BEFORE_CALL_644 Int) (|v_main_~#a~0.base_BEFORE_CALL_443| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (< v_main_~i~0_BEFORE_CALL_644 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_644) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_443|) (* 4 v_main_~i~0_BEFORE_CALL_644)) v_main_~i~0_BEFORE_CALL_644) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_644 ~N~0) (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_443|) (* 4 v_main_~i~0_BEFORE_CALL_644)) v_main_~i~0_BEFORE_CALL_644)) (<= 0 v_main_~i~0_BEFORE_CALL_644) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:39:28,800 INFO L193 IcfgInterpreter]: Reachable states at location L12-2 satisfy 76#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (<= 0 main_~i~0) (= 0 |#NULL.base|) (<= 0 |#NULL.base|) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (= |#valid| (store |old(#valid)| |main_~#a~0.base| 1)) (<= 0 (+ ~N~0 2147483648)) (= main_~k~0 0) (<= main_~k~0 0) (= |main_~#a~0.offset| 0) (<= ~N~0 2147483647) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= |main_~#a~0.offset| 0) (<= main_~i~0 0) (< 0 ~N~0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (= (store |old(#length)| |main_~#a~0.base| (* 4 ~N~0)) |#length|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0)) [2019-10-07 00:39:30,612 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 00:39:30,612 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 35, 34, 12] total 65 [2019-10-07 00:39:30,612 INFO L442 AbstractCegarLoop]: Interpolant automaton has 65 states [2019-10-07 00:39:30,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2019-10-07 00:39:30,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=690, Invalid=3470, Unknown=0, NotChecked=0, Total=4160 [2019-10-07 00:39:30,613 INFO L87 Difference]: Start difference. First operand 81 states and 96 transitions. Second operand 65 states. [2019-10-07 00:39:38,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:39:38,065 INFO L93 Difference]: Finished difference Result 149 states and 179 transitions. [2019-10-07 00:39:38,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2019-10-07 00:39:38,066 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 132 [2019-10-07 00:39:38,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:39:38,068 INFO L225 Difference]: With dead ends: 149 [2019-10-07 00:39:38,068 INFO L226 Difference]: Without dead ends: 86 [2019-10-07 00:39:38,069 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 320 SyntacticMatches, 46 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11347 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=4371, Invalid=23351, Unknown=0, NotChecked=0, Total=27722 [2019-10-07 00:39:38,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2019-10-07 00:39:38,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 82. [2019-10-07 00:39:38,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2019-10-07 00:39:38,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 97 transitions. [2019-10-07 00:39:38,093 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 97 transitions. Word has length 132 [2019-10-07 00:39:38,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:39:38,093 INFO L462 AbstractCegarLoop]: Abstraction has 82 states and 97 transitions. [2019-10-07 00:39:38,093 INFO L463 AbstractCegarLoop]: Interpolant automaton has 65 states. [2019-10-07 00:39:38,093 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 97 transitions. [2019-10-07 00:39:38,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-10-07 00:39:38,094 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:39:38,094 INFO L385 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:39:38,298 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:39:38,299 INFO L410 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:39:38,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:39:38,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1394979597, now seen corresponding path program 27 times [2019-10-07 00:39:38,300 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:39:38,300 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:39:38,300 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:39:38,301 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:39:38,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:39:38,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:39:39,242 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 30 proven. 481 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2019-10-07 00:39:39,242 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:39:39,242 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:39:39,242 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 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:39:39,654 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-07 00:39:39,654 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-07 00:39:39,656 INFO L256 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 75 conjunts are in the unsatisfiable core [2019-10-07 00:39:39,659 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:39:43,210 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2019-10-07 00:39:43,211 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:39:43,389 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 30 proven. 481 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2019-10-07 00:39:43,389 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:39:43,390 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-07 00:39:43,390 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:39:43,390 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:39:43,390 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:39:43,390 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:39:43,408 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-07 00:39:43,782 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2019-10-07 00:39:43,795 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-10-07 00:39:43,799 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 00:39:43,799 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 00:39:43,800 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 175#(and (exists ((|v_main_~#a~0.base_BEFORE_CALL_482| Int) (v_main_~i~0_BEFORE_CALL_684 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_684) (<= 0 |#NULL.base|) (not (= v_main_~i~0_BEFORE_CALL_684 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_482|) (* 4 v_main_~i~0_BEFORE_CALL_684)))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_684 ~N~0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (= v_main_~i~0_BEFORE_CALL_684 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_482|) (* 4 v_main_~i~0_BEFORE_CALL_684))) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_684) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_684 ~N~0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:39:43,800 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 190#(and (<= __VERIFIER_assert_~cond 0) (exists ((|v_main_~#a~0.base_BEFORE_CALL_482| Int) (v_main_~i~0_BEFORE_CALL_684 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_684) (<= 0 |#NULL.base|) (not (= v_main_~i~0_BEFORE_CALL_684 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_482|) (* 4 v_main_~i~0_BEFORE_CALL_684)))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_684 ~N~0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (= v_main_~i~0_BEFORE_CALL_684 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_482|) (* 4 v_main_~i~0_BEFORE_CALL_684))) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_684) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_684 ~N~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)) [2019-10-07 00:39:43,800 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 199#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 00:39:43,800 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertEXIT satisfy 185#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((|v_main_~#a~0.base_BEFORE_CALL_482| Int) (v_main_~i~0_BEFORE_CALL_684 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_684) (<= 0 |#NULL.base|) (not (= v_main_~i~0_BEFORE_CALL_684 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_482|) (* 4 v_main_~i~0_BEFORE_CALL_684)))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_684 ~N~0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (= v_main_~i~0_BEFORE_CALL_684 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_482|) (* 4 v_main_~i~0_BEFORE_CALL_684))) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_684) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_684 ~N~0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:39:43,801 INFO L193 IcfgInterpreter]: Reachable states at location L18-2 satisfy 148#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:39:43,801 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:39:43,801 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (<= 0 ~N~0) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#memory_int| |old(#memory_int)|) (<= |old(~N~0)| 0) (<= 0 |old(~N~0)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:39:43,802 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 204#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:39:43,802 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 00:39:43,802 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 195#(and (<= __VERIFIER_assert_~cond 0) (exists ((|v_main_~#a~0.base_BEFORE_CALL_482| Int) (v_main_~i~0_BEFORE_CALL_684 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_684) (<= 0 |#NULL.base|) (not (= v_main_~i~0_BEFORE_CALL_684 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_482|) (* 4 v_main_~i~0_BEFORE_CALL_684)))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_684 ~N~0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (= v_main_~i~0_BEFORE_CALL_684 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_482|) (* 4 v_main_~i~0_BEFORE_CALL_684))) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_684) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_684 ~N~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)) [2019-10-07 00:39:43,803 INFO L193 IcfgInterpreter]: Reachable states at location L7 satisfy 38#(and (= 0 |#NULL.base|) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (<= 0 (+ ~N~0 2147483648)) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (<= |old(~N~0)| 0) (<= 0 |old(~N~0)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:39:43,803 INFO L193 IcfgInterpreter]: Reachable states at location L19-1 satisfy 166#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= |main_#t~mem1| 2147483647) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (= main_~i~0 |main_#t~mem1|) (<= 0 |main_#t~mem1|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:39:43,803 INFO L193 IcfgInterpreter]: Reachable states at location L19 satisfy 153#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:39:43,803 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 170#(exists ((|v_main_~#a~0.base_BEFORE_CALL_482| Int) (v_main_~i~0_BEFORE_CALL_684 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_684) (<= 0 |#NULL.base|) (not (= v_main_~i~0_BEFORE_CALL_684 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_482|) (* 4 v_main_~i~0_BEFORE_CALL_684)))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_684 ~N~0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (= v_main_~i~0_BEFORE_CALL_684 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_482|) (* 4 v_main_~i~0_BEFORE_CALL_684))) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_684) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_684 ~N~0)))) [2019-10-07 00:39:43,804 INFO L193 IcfgInterpreter]: Reachable states at location L2-3 satisfy 180#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((|v_main_~#a~0.base_BEFORE_CALL_482| Int) (v_main_~i~0_BEFORE_CALL_684 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_684) (<= 0 |#NULL.base|) (not (= v_main_~i~0_BEFORE_CALL_684 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_482|) (* 4 v_main_~i~0_BEFORE_CALL_684)))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_684 ~N~0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (= v_main_~i~0_BEFORE_CALL_684 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_482|) (* 4 v_main_~i~0_BEFORE_CALL_684))) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_684) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_684 ~N~0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:39:43,804 INFO L193 IcfgInterpreter]: Reachable states at location L12-2 satisfy 76#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (<= 0 main_~i~0) (= 0 |#NULL.base|) (<= 0 |#NULL.base|) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (= |#valid| (store |old(#valid)| |main_~#a~0.base| 1)) (<= 0 (+ ~N~0 2147483648)) (= main_~k~0 0) (<= main_~k~0 0) (= |main_~#a~0.offset| 0) (<= ~N~0 2147483647) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= |main_~#a~0.offset| 0) (<= main_~i~0 0) (< 0 ~N~0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (= (store |old(#length)| |main_~#a~0.base| (* 4 ~N~0)) |#length|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0)) [2019-10-07 00:39:47,237 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 00:39:47,237 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 39, 38, 12] total 88 [2019-10-07 00:39:47,238 INFO L442 AbstractCegarLoop]: Interpolant automaton has 88 states [2019-10-07 00:39:47,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2019-10-07 00:39:47,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=7377, Unknown=0, NotChecked=0, Total=7656 [2019-10-07 00:39:47,239 INFO L87 Difference]: Start difference. First operand 82 states and 97 transitions. Second operand 88 states. [2019-10-07 00:39:57,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:39:57,678 INFO L93 Difference]: Finished difference Result 90 states and 106 transitions. [2019-10-07 00:39:57,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2019-10-07 00:39:57,679 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 133 [2019-10-07 00:39:57,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:39:57,680 INFO L225 Difference]: With dead ends: 90 [2019-10-07 00:39:57,680 INFO L226 Difference]: Without dead ends: 88 [2019-10-07 00:39:57,682 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 304 SyntacticMatches, 47 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8087 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=1033, Invalid=24407, Unknown=0, NotChecked=0, Total=25440 [2019-10-07 00:39:57,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2019-10-07 00:39:57,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 85. [2019-10-07 00:39:57,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2019-10-07 00:39:57,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 101 transitions. [2019-10-07 00:39:57,702 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 101 transitions. Word has length 133 [2019-10-07 00:39:57,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:39:57,703 INFO L462 AbstractCegarLoop]: Abstraction has 85 states and 101 transitions. [2019-10-07 00:39:57,703 INFO L463 AbstractCegarLoop]: Interpolant automaton has 88 states. [2019-10-07 00:39:57,703 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 101 transitions. [2019-10-07 00:39:57,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-10-07 00:39:57,704 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:39:57,704 INFO L385 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:39:57,909 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:39:57,909 INFO L410 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:39:57,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:39:57,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1555296802, now seen corresponding path program 28 times [2019-10-07 00:39:57,910 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:39:57,910 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:39:57,911 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:39:57,911 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:39:57,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:39:57,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:39:58,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 378 proven. 182 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2019-10-07 00:39:58,437 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:39:58,437 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:39:58,437 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 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:39:58,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:39:58,872 INFO L256 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 36 conjunts are in the unsatisfiable core [2019-10-07 00:39:58,874 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:39:59,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 424 proven. 136 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2019-10-07 00:39:59,413 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:39:59,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 424 proven. 136 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2019-10-07 00:39:59,898 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:39:59,899 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-07 00:39:59,899 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:39:59,899 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:39:59,900 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:39:59,900 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:39:59,917 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 25 for LOIs [2019-10-07 00:40:00,134 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2019-10-07 00:40:00,143 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-10-07 00:40:00,147 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 00:40:00,147 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 00:40:00,147 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 175#(and (exists ((|v_main_~#a~0.base_BEFORE_CALL_491| Int) (v_main_~i~0_BEFORE_CALL_725 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_491|) (* 4 v_main_~i~0_BEFORE_CALL_725)) v_main_~i~0_BEFORE_CALL_725) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_725) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_725 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_491|) (* 4 v_main_~i~0_BEFORE_CALL_725)) v_main_~i~0_BEFORE_CALL_725)) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_725) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_725 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:40:00,147 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 190#(and (<= __VERIFIER_assert_~cond 0) (exists ((|v_main_~#a~0.base_BEFORE_CALL_491| Int) (v_main_~i~0_BEFORE_CALL_725 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_491|) (* 4 v_main_~i~0_BEFORE_CALL_725)) v_main_~i~0_BEFORE_CALL_725) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_725) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_725 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_491|) (* 4 v_main_~i~0_BEFORE_CALL_725)) v_main_~i~0_BEFORE_CALL_725)) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_725) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_725 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 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)) [2019-10-07 00:40:00,148 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 199#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 00:40:00,148 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertEXIT satisfy 185#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((|v_main_~#a~0.base_BEFORE_CALL_491| Int) (v_main_~i~0_BEFORE_CALL_725 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_491|) (* 4 v_main_~i~0_BEFORE_CALL_725)) v_main_~i~0_BEFORE_CALL_725) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_725) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_725 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_491|) (* 4 v_main_~i~0_BEFORE_CALL_725)) v_main_~i~0_BEFORE_CALL_725)) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_725) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_725 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:40:00,148 INFO L193 IcfgInterpreter]: Reachable states at location L18-2 satisfy 148#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:40:00,148 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:40:00,148 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (<= 0 ~N~0) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:40:00,149 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 204#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:40:00,149 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 00:40:00,149 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 195#(and (<= __VERIFIER_assert_~cond 0) (exists ((|v_main_~#a~0.base_BEFORE_CALL_491| Int) (v_main_~i~0_BEFORE_CALL_725 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_491|) (* 4 v_main_~i~0_BEFORE_CALL_725)) v_main_~i~0_BEFORE_CALL_725) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_725) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_725 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_491|) (* 4 v_main_~i~0_BEFORE_CALL_725)) v_main_~i~0_BEFORE_CALL_725)) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_725) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_725 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 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)) [2019-10-07 00:40:00,149 INFO L193 IcfgInterpreter]: Reachable states at location L7 satisfy 38#(and (<= ~N~0 2147483647) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (<= 0 (+ ~N~0 2147483648)) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:40:00,149 INFO L193 IcfgInterpreter]: Reachable states at location L19-1 satisfy 166#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= |main_#t~mem1| 2147483647) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (= main_~i~0 |main_#t~mem1|) (<= 0 |main_#t~mem1|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:40:00,150 INFO L193 IcfgInterpreter]: Reachable states at location L19 satisfy 153#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:40:00,150 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 170#(exists ((|v_main_~#a~0.base_BEFORE_CALL_491| Int) (v_main_~i~0_BEFORE_CALL_725 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_491|) (* 4 v_main_~i~0_BEFORE_CALL_725)) v_main_~i~0_BEFORE_CALL_725) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_725) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_725 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_491|) (* 4 v_main_~i~0_BEFORE_CALL_725)) v_main_~i~0_BEFORE_CALL_725)) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_725) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_725 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-07 00:40:00,150 INFO L193 IcfgInterpreter]: Reachable states at location L2-3 satisfy 180#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((|v_main_~#a~0.base_BEFORE_CALL_491| Int) (v_main_~i~0_BEFORE_CALL_725 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_491|) (* 4 v_main_~i~0_BEFORE_CALL_725)) v_main_~i~0_BEFORE_CALL_725) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_725) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_725 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_491|) (* 4 v_main_~i~0_BEFORE_CALL_725)) v_main_~i~0_BEFORE_CALL_725)) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_725) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_725 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:40:00,150 INFO L193 IcfgInterpreter]: Reachable states at location L12-2 satisfy 76#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (<= 0 main_~i~0) (= 0 |#NULL.base|) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (= |#valid| (store |old(#valid)| |main_~#a~0.base| 1)) (<= 0 (+ ~N~0 2147483648)) (= main_~k~0 0) (<= main_~k~0 0) (= |main_~#a~0.offset| 0) (<= ~N~0 2147483647) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= main_~i~0 0) (< 0 ~N~0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (= (store |old(#length)| |main_~#a~0.base| (* 4 ~N~0)) |#length|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0)) [2019-10-07 00:40:01,843 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 00:40:01,843 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 37, 36, 12] total 68 [2019-10-07 00:40:01,844 INFO L442 AbstractCegarLoop]: Interpolant automaton has 68 states [2019-10-07 00:40:01,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2019-10-07 00:40:01,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=764, Invalid=3792, Unknown=0, NotChecked=0, Total=4556 [2019-10-07 00:40:01,845 INFO L87 Difference]: Start difference. First operand 85 states and 101 transitions. Second operand 68 states. [2019-10-07 00:40:09,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:40:09,609 INFO L93 Difference]: Finished difference Result 156 states and 188 transitions. [2019-10-07 00:40:09,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2019-10-07 00:40:09,610 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 140 [2019-10-07 00:40:09,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:40:09,611 INFO L225 Difference]: With dead ends: 156 [2019-10-07 00:40:09,611 INFO L226 Difference]: Without dead ends: 90 [2019-10-07 00:40:09,613 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 563 GetRequests, 340 SyntacticMatches, 49 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12665 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=4876, Invalid=25924, Unknown=0, NotChecked=0, Total=30800 [2019-10-07 00:40:09,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2019-10-07 00:40:09,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 86. [2019-10-07 00:40:09,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2019-10-07 00:40:09,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 102 transitions. [2019-10-07 00:40:09,633 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 102 transitions. Word has length 140 [2019-10-07 00:40:09,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:40:09,633 INFO L462 AbstractCegarLoop]: Abstraction has 86 states and 102 transitions. [2019-10-07 00:40:09,633 INFO L463 AbstractCegarLoop]: Interpolant automaton has 68 states. [2019-10-07 00:40:09,633 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 102 transitions. [2019-10-07 00:40:09,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-10-07 00:40:09,634 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:40:09,635 INFO L385 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:40:09,835 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:40:09,836 INFO L410 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:40:09,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:40:09,836 INFO L82 PathProgramCache]: Analyzing trace with hash -361481479, now seen corresponding path program 29 times [2019-10-07 00:40:09,836 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:40:09,837 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:40:09,837 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:40:09,837 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:40:09,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:40:09,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:40:10,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 32 proven. 545 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2019-10-07 00:40:10,805 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:40:10,805 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:40:10,805 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 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:40:12,325 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2019-10-07 00:40:12,325 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-07 00:40:12,330 INFO L256 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 82 conjunts are in the unsatisfiable core [2019-10-07 00:40:12,333 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:40:16,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 376 proven. 201 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2019-10-07 00:40:16,749 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:40:20,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 392 proven. 185 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2019-10-07 00:40:20,039 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:40:20,040 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-07 00:40:20,040 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:40:20,040 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:40:20,041 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:40:20,041 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:40:20,059 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-07 00:40:20,292 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2019-10-07 00:40:20,309 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-10-07 00:40:20,312 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 00:40:20,313 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 00:40:20,313 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 175#(and (exists ((v_main_~i~0_BEFORE_CALL_767 Int) (|v_main_~#a~0.base_BEFORE_CALL_532| Int)) (or (and (<= 0 v_main_~i~0_BEFORE_CALL_767) (= |#NULL.base| 0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_532|) (* 4 v_main_~i~0_BEFORE_CALL_767)) v_main_~i~0_BEFORE_CALL_767) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_767 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (<= 0 v_main_~i~0_BEFORE_CALL_767) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_532|) (* 4 v_main_~i~0_BEFORE_CALL_767)) v_main_~i~0_BEFORE_CALL_767)) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_767 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:40:20,313 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 190#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_main_~i~0_BEFORE_CALL_767 Int) (|v_main_~#a~0.base_BEFORE_CALL_532| Int)) (or (and (<= 0 v_main_~i~0_BEFORE_CALL_767) (= |#NULL.base| 0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_532|) (* 4 v_main_~i~0_BEFORE_CALL_767)) v_main_~i~0_BEFORE_CALL_767) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_767 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (<= 0 v_main_~i~0_BEFORE_CALL_767) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_532|) (* 4 v_main_~i~0_BEFORE_CALL_767)) v_main_~i~0_BEFORE_CALL_767)) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_767 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:40:20,313 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 199#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 00:40:20,313 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertEXIT satisfy 185#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((v_main_~i~0_BEFORE_CALL_767 Int) (|v_main_~#a~0.base_BEFORE_CALL_532| Int)) (or (and (<= 0 v_main_~i~0_BEFORE_CALL_767) (= |#NULL.base| 0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_532|) (* 4 v_main_~i~0_BEFORE_CALL_767)) v_main_~i~0_BEFORE_CALL_767) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_767 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (<= 0 v_main_~i~0_BEFORE_CALL_767) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_532|) (* 4 v_main_~i~0_BEFORE_CALL_767)) v_main_~i~0_BEFORE_CALL_767)) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_767 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:40:20,314 INFO L193 IcfgInterpreter]: Reachable states at location L18-2 satisfy 148#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:40:20,314 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:40:20,314 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (<= 0 ~N~0) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#memory_int| |old(#memory_int)|) (<= |old(~N~0)| 0) (<= 0 |old(~N~0)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:40:20,314 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 204#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:40:20,314 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 00:40:20,314 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 195#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_main_~i~0_BEFORE_CALL_767 Int) (|v_main_~#a~0.base_BEFORE_CALL_532| Int)) (or (and (<= 0 v_main_~i~0_BEFORE_CALL_767) (= |#NULL.base| 0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_532|) (* 4 v_main_~i~0_BEFORE_CALL_767)) v_main_~i~0_BEFORE_CALL_767) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_767 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (<= 0 v_main_~i~0_BEFORE_CALL_767) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_532|) (* 4 v_main_~i~0_BEFORE_CALL_767)) v_main_~i~0_BEFORE_CALL_767)) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_767 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:40:20,315 INFO L193 IcfgInterpreter]: Reachable states at location L7 satisfy 38#(and (= 0 |#NULL.base|) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (<= 0 (+ ~N~0 2147483648)) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (<= |old(~N~0)| 0) (<= 0 |old(~N~0)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:40:20,315 INFO L193 IcfgInterpreter]: Reachable states at location L19-1 satisfy 166#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= |main_#t~mem1| 2147483647) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (= main_~i~0 |main_#t~mem1|) (<= 0 |main_#t~mem1|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:40:20,315 INFO L193 IcfgInterpreter]: Reachable states at location L19 satisfy 153#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:40:20,315 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 170#(exists ((v_main_~i~0_BEFORE_CALL_767 Int) (|v_main_~#a~0.base_BEFORE_CALL_532| Int)) (or (and (<= 0 v_main_~i~0_BEFORE_CALL_767) (= |#NULL.base| 0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_532|) (* 4 v_main_~i~0_BEFORE_CALL_767)) v_main_~i~0_BEFORE_CALL_767) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_767 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (<= 0 v_main_~i~0_BEFORE_CALL_767) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_532|) (* 4 v_main_~i~0_BEFORE_CALL_767)) v_main_~i~0_BEFORE_CALL_767)) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_767 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-07 00:40:20,315 INFO L193 IcfgInterpreter]: Reachable states at location L2-3 satisfy 180#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((v_main_~i~0_BEFORE_CALL_767 Int) (|v_main_~#a~0.base_BEFORE_CALL_532| Int)) (or (and (<= 0 v_main_~i~0_BEFORE_CALL_767) (= |#NULL.base| 0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_532|) (* 4 v_main_~i~0_BEFORE_CALL_767)) v_main_~i~0_BEFORE_CALL_767) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_767 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (<= 0 v_main_~i~0_BEFORE_CALL_767) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_532|) (* 4 v_main_~i~0_BEFORE_CALL_767)) v_main_~i~0_BEFORE_CALL_767)) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_767 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:40:20,316 INFO L193 IcfgInterpreter]: Reachable states at location L12-2 satisfy 76#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (<= 0 main_~i~0) (= 0 |#NULL.base|) (<= 0 |#NULL.base|) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (= |#valid| (store |old(#valid)| |main_~#a~0.base| 1)) (<= 0 (+ ~N~0 2147483648)) (= main_~k~0 0) (<= main_~k~0 0) (= |main_~#a~0.offset| 0) (<= ~N~0 2147483647) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= |main_~#a~0.offset| 0) (<= main_~i~0 0) (< 0 ~N~0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (= (store |old(#length)| |main_~#a~0.base| (* 4 ~N~0)) |#length|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0)) [2019-10-07 00:40:23,909 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 00:40:23,909 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 41, 40, 12] total 126 [2019-10-07 00:40:23,910 INFO L442 AbstractCegarLoop]: Interpolant automaton has 126 states [2019-10-07 00:40:23,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2019-10-07 00:40:23,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1076, Invalid=14674, Unknown=0, NotChecked=0, Total=15750 [2019-10-07 00:40:23,911 INFO L87 Difference]: Start difference. First operand 86 states and 102 transitions. Second operand 126 states. [2019-10-07 00:40:29,392 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2019-10-07 00:40:34,030 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2019-10-07 00:40:38,128 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2019-10-07 00:40:48,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:40:48,198 INFO L93 Difference]: Finished difference Result 156 states and 190 transitions. [2019-10-07 00:40:48,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2019-10-07 00:40:48,199 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 141 [2019-10-07 00:40:48,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:40:48,200 INFO L225 Difference]: With dead ends: 156 [2019-10-07 00:40:48,200 INFO L226 Difference]: Without dead ends: 92 [2019-10-07 00:40:48,204 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 595 GetRequests, 291 SyntacticMatches, 48 SemanticMatches, 256 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21219 ImplicationChecksByTransitivity, 29.3s TimeCoverageRelationStatistics Valid=4393, Invalid=61913, Unknown=0, NotChecked=0, Total=66306 [2019-10-07 00:40:48,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2019-10-07 00:40:48,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 90. [2019-10-07 00:40:48,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2019-10-07 00:40:48,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 107 transitions. [2019-10-07 00:40:48,232 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 107 transitions. Word has length 141 [2019-10-07 00:40:48,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:40:48,232 INFO L462 AbstractCegarLoop]: Abstraction has 90 states and 107 transitions. [2019-10-07 00:40:48,233 INFO L463 AbstractCegarLoop]: Interpolant automaton has 126 states. [2019-10-07 00:40:48,233 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 107 transitions. [2019-10-07 00:40:48,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-07 00:40:48,234 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:40:48,234 INFO L385 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:40:48,436 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:40:48,437 INFO L410 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:40:48,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:40:48,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1537218931, now seen corresponding path program 30 times [2019-10-07 00:40:48,438 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:40:48,438 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:40:48,438 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:40:48,438 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:40:48,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:40:48,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:40:49,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 34 proven. 613 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2019-10-07 00:40:49,700 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:40:49,700 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:40:49,700 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 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:40:50,176 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-07 00:40:50,176 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-07 00:40:50,179 INFO L256 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 83 conjunts are in the unsatisfiable core [2019-10-07 00:40:50,182 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:40:54,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 0 proven. 647 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2019-10-07 00:40:54,950 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:40:55,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 34 proven. 613 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2019-10-07 00:40:55,268 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:40:55,274 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-07 00:40:55,275 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:40:55,275 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:40:55,276 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:40:55,276 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:40:55,295 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 25 for LOIs [2019-10-07 00:40:55,677 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2019-10-07 00:40:55,685 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-10-07 00:40:55,688 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 00:40:55,688 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 00:40:55,688 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 175#(and (exists ((v_main_~i~0_BEFORE_CALL_811 Int) (|v_main_~#a~0.base_BEFORE_CALL_575| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (< v_main_~i~0_BEFORE_CALL_811 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_811) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_575|) (* 4 v_main_~i~0_BEFORE_CALL_811)) v_main_~i~0_BEFORE_CALL_811) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (< v_main_~i~0_BEFORE_CALL_811 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_811) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_575|) (* 4 v_main_~i~0_BEFORE_CALL_811)) v_main_~i~0_BEFORE_CALL_811)) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:40:55,688 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 190#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_main_~i~0_BEFORE_CALL_811 Int) (|v_main_~#a~0.base_BEFORE_CALL_575| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (< v_main_~i~0_BEFORE_CALL_811 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_811) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_575|) (* 4 v_main_~i~0_BEFORE_CALL_811)) v_main_~i~0_BEFORE_CALL_811) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (< v_main_~i~0_BEFORE_CALL_811 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_811) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_575|) (* 4 v_main_~i~0_BEFORE_CALL_811)) v_main_~i~0_BEFORE_CALL_811)) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:40:55,689 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 199#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 00:40:55,689 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertEXIT satisfy 185#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((v_main_~i~0_BEFORE_CALL_811 Int) (|v_main_~#a~0.base_BEFORE_CALL_575| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (< v_main_~i~0_BEFORE_CALL_811 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_811) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_575|) (* 4 v_main_~i~0_BEFORE_CALL_811)) v_main_~i~0_BEFORE_CALL_811) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (< v_main_~i~0_BEFORE_CALL_811 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_811) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_575|) (* 4 v_main_~i~0_BEFORE_CALL_811)) v_main_~i~0_BEFORE_CALL_811)) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:40:55,689 INFO L193 IcfgInterpreter]: Reachable states at location L18-2 satisfy 148#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:40:55,689 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:40:55,689 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (<= 0 ~N~0) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:40:55,689 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 204#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:40:55,690 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 00:40:55,690 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 195#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_main_~i~0_BEFORE_CALL_811 Int) (|v_main_~#a~0.base_BEFORE_CALL_575| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (< v_main_~i~0_BEFORE_CALL_811 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_811) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_575|) (* 4 v_main_~i~0_BEFORE_CALL_811)) v_main_~i~0_BEFORE_CALL_811) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (< v_main_~i~0_BEFORE_CALL_811 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_811) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_575|) (* 4 v_main_~i~0_BEFORE_CALL_811)) v_main_~i~0_BEFORE_CALL_811)) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:40:55,690 INFO L193 IcfgInterpreter]: Reachable states at location L7 satisfy 38#(and (= 0 |#NULL.base|) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (<= 0 (+ ~N~0 2147483648)) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:40:55,690 INFO L193 IcfgInterpreter]: Reachable states at location L19-1 satisfy 166#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= |main_#t~mem1| 2147483647) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (= main_~i~0 |main_#t~mem1|) (<= 0 |main_#t~mem1|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:40:55,690 INFO L193 IcfgInterpreter]: Reachable states at location L19 satisfy 153#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:40:55,691 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 170#(exists ((v_main_~i~0_BEFORE_CALL_811 Int) (|v_main_~#a~0.base_BEFORE_CALL_575| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (< v_main_~i~0_BEFORE_CALL_811 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_811) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_575|) (* 4 v_main_~i~0_BEFORE_CALL_811)) v_main_~i~0_BEFORE_CALL_811) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (< v_main_~i~0_BEFORE_CALL_811 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_811) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_575|) (* 4 v_main_~i~0_BEFORE_CALL_811)) v_main_~i~0_BEFORE_CALL_811)) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-07 00:40:55,691 INFO L193 IcfgInterpreter]: Reachable states at location L2-3 satisfy 180#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((v_main_~i~0_BEFORE_CALL_811 Int) (|v_main_~#a~0.base_BEFORE_CALL_575| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (< v_main_~i~0_BEFORE_CALL_811 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_811) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_575|) (* 4 v_main_~i~0_BEFORE_CALL_811)) v_main_~i~0_BEFORE_CALL_811) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (< v_main_~i~0_BEFORE_CALL_811 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_811) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_575|) (* 4 v_main_~i~0_BEFORE_CALL_811)) v_main_~i~0_BEFORE_CALL_811)) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:40:55,691 INFO L193 IcfgInterpreter]: Reachable states at location L12-2 satisfy 76#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (<= 0 main_~i~0) (= 0 |#NULL.base|) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (= |#valid| (store |old(#valid)| |main_~#a~0.base| 1)) (<= 0 (+ ~N~0 2147483648)) (= main_~k~0 0) (<= main_~k~0 0) (= |main_~#a~0.offset| 0) (<= ~N~0 2147483647) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= main_~i~0 0) (< 0 ~N~0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (= (store |old(#length)| |main_~#a~0.base| (* 4 ~N~0)) |#length|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0)) [2019-10-07 00:40:59,129 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 00:40:59,130 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 43, 42, 12] total 96 [2019-10-07 00:40:59,130 INFO L442 AbstractCegarLoop]: Interpolant automaton has 96 states [2019-10-07 00:40:59,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2019-10-07 00:40:59,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=8815, Unknown=0, NotChecked=0, Total=9120 [2019-10-07 00:40:59,131 INFO L87 Difference]: Start difference. First operand 90 states and 107 transitions. Second operand 96 states. [2019-10-07 00:41:11,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:41:11,417 INFO L93 Difference]: Finished difference Result 98 states and 116 transitions. [2019-10-07 00:41:11,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2019-10-07 00:41:11,418 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 149 [2019-10-07 00:41:11,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:41:11,419 INFO L225 Difference]: With dead ends: 98 [2019-10-07 00:41:11,420 INFO L226 Difference]: Without dead ends: 96 [2019-10-07 00:41:11,422 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 569 GetRequests, 341 SyntacticMatches, 54 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9957 ImplicationChecksByTransitivity, 15.7s TimeCoverageRelationStatistics Valid=1145, Invalid=29655, Unknown=0, NotChecked=0, Total=30800 [2019-10-07 00:41:11,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2019-10-07 00:41:11,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 93. [2019-10-07 00:41:11,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2019-10-07 00:41:11,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 111 transitions. [2019-10-07 00:41:11,458 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 111 transitions. Word has length 149 [2019-10-07 00:41:11,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:41:11,459 INFO L462 AbstractCegarLoop]: Abstraction has 93 states and 111 transitions. [2019-10-07 00:41:11,459 INFO L463 AbstractCegarLoop]: Interpolant automaton has 96 states. [2019-10-07 00:41:11,459 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 111 transitions. [2019-10-07 00:41:11,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2019-10-07 00:41:11,460 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:41:11,460 INFO L385 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:41:11,666 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:41:11,666 INFO L410 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:41:11,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:41:11,667 INFO L82 PathProgramCache]: Analyzing trace with hash 693693022, now seen corresponding path program 31 times [2019-10-07 00:41:11,667 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:41:11,668 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:41:11,668 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:41:11,668 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:41:11,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:41:11,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:41:12,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 479 proven. 223 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2019-10-07 00:41:12,545 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:41:12,545 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:41:12,545 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 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:41:13,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:41:13,037 INFO L256 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 40 conjunts are in the unsatisfiable core [2019-10-07 00:41:13,039 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:41:13,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 531 proven. 171 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2019-10-07 00:41:13,676 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:41:14,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 531 proven. 171 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2019-10-07 00:41:14,163 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:41:14,163 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-07 00:41:14,163 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:41:14,164 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:41:14,164 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:41:14,164 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:41:14,180 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 25 for LOIs [2019-10-07 00:41:14,380 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2019-10-07 00:41:14,395 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-10-07 00:41:14,398 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 00:41:14,399 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 00:41:14,399 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 175#(and (exists ((|v_main_~#a~0.base_BEFORE_CALL_584| Int) (v_main_~i~0_BEFORE_CALL_856 Int)) (or (and (< v_main_~i~0_BEFORE_CALL_856 ~N~0) (= |#NULL.base| 0) (not (= v_main_~i~0_BEFORE_CALL_856 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_584|) (* 4 v_main_~i~0_BEFORE_CALL_856)))) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 v_main_~i~0_BEFORE_CALL_856) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (< v_main_~i~0_BEFORE_CALL_856 ~N~0) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (= v_main_~i~0_BEFORE_CALL_856 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_584|) (* 4 v_main_~i~0_BEFORE_CALL_856))) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 v_main_~i~0_BEFORE_CALL_856) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:41:14,399 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 190#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_main_~#a~0.base_BEFORE_CALL_584| Int) (v_main_~i~0_BEFORE_CALL_856 Int)) (or (and (< v_main_~i~0_BEFORE_CALL_856 ~N~0) (= |#NULL.base| 0) (not (= v_main_~i~0_BEFORE_CALL_856 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_584|) (* 4 v_main_~i~0_BEFORE_CALL_856)))) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 v_main_~i~0_BEFORE_CALL_856) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (< v_main_~i~0_BEFORE_CALL_856 ~N~0) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (= v_main_~i~0_BEFORE_CALL_856 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_584|) (* 4 v_main_~i~0_BEFORE_CALL_856))) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 v_main_~i~0_BEFORE_CALL_856) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:41:14,399 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 199#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 00:41:14,400 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertEXIT satisfy 185#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((|v_main_~#a~0.base_BEFORE_CALL_584| Int) (v_main_~i~0_BEFORE_CALL_856 Int)) (or (and (< v_main_~i~0_BEFORE_CALL_856 ~N~0) (= |#NULL.base| 0) (not (= v_main_~i~0_BEFORE_CALL_856 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_584|) (* 4 v_main_~i~0_BEFORE_CALL_856)))) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 v_main_~i~0_BEFORE_CALL_856) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (< v_main_~i~0_BEFORE_CALL_856 ~N~0) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (= v_main_~i~0_BEFORE_CALL_856 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_584|) (* 4 v_main_~i~0_BEFORE_CALL_856))) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 v_main_~i~0_BEFORE_CALL_856) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:41:14,400 INFO L193 IcfgInterpreter]: Reachable states at location L18-2 satisfy 148#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:41:14,400 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:41:14,400 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 |old(~N~0)|) (<= 0 ~N~0) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:41:14,400 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 204#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:41:14,400 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 00:41:14,401 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 195#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_main_~#a~0.base_BEFORE_CALL_584| Int) (v_main_~i~0_BEFORE_CALL_856 Int)) (or (and (< v_main_~i~0_BEFORE_CALL_856 ~N~0) (= |#NULL.base| 0) (not (= v_main_~i~0_BEFORE_CALL_856 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_584|) (* 4 v_main_~i~0_BEFORE_CALL_856)))) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 v_main_~i~0_BEFORE_CALL_856) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (< v_main_~i~0_BEFORE_CALL_856 ~N~0) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (= v_main_~i~0_BEFORE_CALL_856 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_584|) (* 4 v_main_~i~0_BEFORE_CALL_856))) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 v_main_~i~0_BEFORE_CALL_856) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:41:14,401 INFO L193 IcfgInterpreter]: Reachable states at location L7 satisfy 38#(and (= 0 |#NULL.base|) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 |old(~N~0)|) (<= 0 (+ ~N~0 2147483648)) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:41:14,401 INFO L193 IcfgInterpreter]: Reachable states at location L19-1 satisfy 166#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= |main_#t~mem1| 2147483647) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (= main_~i~0 |main_#t~mem1|) (<= 0 |main_#t~mem1|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:41:14,401 INFO L193 IcfgInterpreter]: Reachable states at location L19 satisfy 153#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:41:14,401 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 170#(exists ((|v_main_~#a~0.base_BEFORE_CALL_584| Int) (v_main_~i~0_BEFORE_CALL_856 Int)) (or (and (< v_main_~i~0_BEFORE_CALL_856 ~N~0) (= |#NULL.base| 0) (not (= v_main_~i~0_BEFORE_CALL_856 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_584|) (* 4 v_main_~i~0_BEFORE_CALL_856)))) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 v_main_~i~0_BEFORE_CALL_856) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (< v_main_~i~0_BEFORE_CALL_856 ~N~0) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (= v_main_~i~0_BEFORE_CALL_856 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_584|) (* 4 v_main_~i~0_BEFORE_CALL_856))) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 v_main_~i~0_BEFORE_CALL_856) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-07 00:41:14,401 INFO L193 IcfgInterpreter]: Reachable states at location L2-3 satisfy 180#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((|v_main_~#a~0.base_BEFORE_CALL_584| Int) (v_main_~i~0_BEFORE_CALL_856 Int)) (or (and (< v_main_~i~0_BEFORE_CALL_856 ~N~0) (= |#NULL.base| 0) (not (= v_main_~i~0_BEFORE_CALL_856 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_584|) (* 4 v_main_~i~0_BEFORE_CALL_856)))) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 v_main_~i~0_BEFORE_CALL_856) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (< v_main_~i~0_BEFORE_CALL_856 ~N~0) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (= v_main_~i~0_BEFORE_CALL_856 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_584|) (* 4 v_main_~i~0_BEFORE_CALL_856))) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 v_main_~i~0_BEFORE_CALL_856) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:41:14,402 INFO L193 IcfgInterpreter]: Reachable states at location L12-2 satisfy 76#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (<= 0 main_~i~0) (= 0 |#NULL.base|) (<= 0 |#NULL.base|) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (= |#valid| (store |old(#valid)| |main_~#a~0.base| 1)) (<= 0 (+ ~N~0 2147483648)) (= main_~k~0 0) (<= main_~k~0 0) (= |main_~#a~0.offset| 0) (<= ~N~0 2147483647) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= |main_~#a~0.offset| 0) (<= main_~i~0 0) (< 0 ~N~0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (= (store |old(#length)| |main_~#a~0.base| (* 4 ~N~0)) |#length|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0)) [2019-10-07 00:41:16,388 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 00:41:16,388 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 41, 40, 12] total 74 [2019-10-07 00:41:16,389 INFO L442 AbstractCegarLoop]: Interpolant automaton has 74 states [2019-10-07 00:41:16,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2019-10-07 00:41:16,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=924, Invalid=4478, Unknown=0, NotChecked=0, Total=5402 [2019-10-07 00:41:16,390 INFO L87 Difference]: Start difference. First operand 93 states and 111 transitions. Second operand 74 states. [2019-10-07 00:41:25,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:41:25,742 INFO L93 Difference]: Finished difference Result 170 states and 206 transitions. [2019-10-07 00:41:25,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2019-10-07 00:41:25,743 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 156 [2019-10-07 00:41:25,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:41:25,745 INFO L225 Difference]: With dead ends: 170 [2019-10-07 00:41:25,745 INFO L226 Difference]: Without dead ends: 98 [2019-10-07 00:41:25,748 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 627 GetRequests, 380 SyntacticMatches, 55 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15517 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=5970, Invalid=31472, Unknown=0, NotChecked=0, Total=37442 [2019-10-07 00:41:25,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2019-10-07 00:41:25,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 94. [2019-10-07 00:41:25,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2019-10-07 00:41:25,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 112 transitions. [2019-10-07 00:41:25,781 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 112 transitions. Word has length 156 [2019-10-07 00:41:25,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:41:25,781 INFO L462 AbstractCegarLoop]: Abstraction has 94 states and 112 transitions. [2019-10-07 00:41:25,781 INFO L463 AbstractCegarLoop]: Interpolant automaton has 74 states. [2019-10-07 00:41:25,782 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 112 transitions. [2019-10-07 00:41:25,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-10-07 00:41:25,783 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:41:25,783 INFO L385 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:41:25,985 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:41:25,986 INFO L410 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:41:25,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:41:25,986 INFO L82 PathProgramCache]: Analyzing trace with hash 2121367929, now seen corresponding path program 32 times [2019-10-07 00:41:25,987 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:41:25,987 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:41:25,987 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:41:25,987 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:41:25,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:41:26,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:41:27,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 36 proven. 685 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2019-10-07 00:41:27,181 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:41:27,181 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:41:27,181 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 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:41:28,887 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2019-10-07 00:41:28,888 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-07 00:41:28,894 INFO L256 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 89 conjunts are in the unsatisfiable core [2019-10-07 00:41:28,896 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:41:34,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 477 proven. 244 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2019-10-07 00:41:34,250 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:41:38,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 444 proven. 277 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2019-10-07 00:41:38,491 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:41:38,492 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-07 00:41:38,492 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:41:38,492 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:41:38,492 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:41:38,492 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:41:38,521 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 25 for LOIs [2019-10-07 00:41:38,724 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2019-10-07 00:41:38,742 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-10-07 00:41:38,744 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 00:41:38,745 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 00:41:38,745 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 175#(and (exists ((|v_main_~#a~0.base_BEFORE_CALL_629| Int) (v_main_~i~0_BEFORE_CALL_902 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (not (= v_main_~i~0_BEFORE_CALL_902 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_629|) (* 4 v_main_~i~0_BEFORE_CALL_902)))) (<= 0 v_main_~i~0_BEFORE_CALL_902) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_902 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_902) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_902 ~N~0) (<= 0 |#NULL.base|) (= v_main_~i~0_BEFORE_CALL_902 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_629|) (* 4 v_main_~i~0_BEFORE_CALL_902))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:41:38,745 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 190#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_main_~#a~0.base_BEFORE_CALL_629| Int) (v_main_~i~0_BEFORE_CALL_902 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (not (= v_main_~i~0_BEFORE_CALL_902 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_629|) (* 4 v_main_~i~0_BEFORE_CALL_902)))) (<= 0 v_main_~i~0_BEFORE_CALL_902) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_902 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_902) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_902 ~N~0) (<= 0 |#NULL.base|) (= v_main_~i~0_BEFORE_CALL_902 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_629|) (* 4 v_main_~i~0_BEFORE_CALL_902))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:41:38,745 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 199#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 00:41:38,745 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertEXIT satisfy 185#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((|v_main_~#a~0.base_BEFORE_CALL_629| Int) (v_main_~i~0_BEFORE_CALL_902 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (not (= v_main_~i~0_BEFORE_CALL_902 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_629|) (* 4 v_main_~i~0_BEFORE_CALL_902)))) (<= 0 v_main_~i~0_BEFORE_CALL_902) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_902 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_902) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_902 ~N~0) (<= 0 |#NULL.base|) (= v_main_~i~0_BEFORE_CALL_902 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_629|) (* 4 v_main_~i~0_BEFORE_CALL_902))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:41:38,746 INFO L193 IcfgInterpreter]: Reachable states at location L18-2 satisfy 148#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:41:38,746 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:41:38,746 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (<= 0 ~N~0) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:41:38,746 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 204#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:41:38,746 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 00:41:38,746 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 195#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_main_~#a~0.base_BEFORE_CALL_629| Int) (v_main_~i~0_BEFORE_CALL_902 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (not (= v_main_~i~0_BEFORE_CALL_902 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_629|) (* 4 v_main_~i~0_BEFORE_CALL_902)))) (<= 0 v_main_~i~0_BEFORE_CALL_902) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_902 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_902) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_902 ~N~0) (<= 0 |#NULL.base|) (= v_main_~i~0_BEFORE_CALL_902 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_629|) (* 4 v_main_~i~0_BEFORE_CALL_902))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:41:38,747 INFO L193 IcfgInterpreter]: Reachable states at location L7 satisfy 38#(and (= 0 |#NULL.base|) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (<= 0 (+ ~N~0 2147483648)) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:41:38,747 INFO L193 IcfgInterpreter]: Reachable states at location L19-1 satisfy 166#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= |main_#t~mem1| 2147483647) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (= main_~i~0 |main_#t~mem1|) (<= 0 |main_#t~mem1|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:41:38,747 INFO L193 IcfgInterpreter]: Reachable states at location L19 satisfy 153#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:41:38,747 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 170#(exists ((|v_main_~#a~0.base_BEFORE_CALL_629| Int) (v_main_~i~0_BEFORE_CALL_902 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (not (= v_main_~i~0_BEFORE_CALL_902 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_629|) (* 4 v_main_~i~0_BEFORE_CALL_902)))) (<= 0 v_main_~i~0_BEFORE_CALL_902) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_902 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_902) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_902 ~N~0) (<= 0 |#NULL.base|) (= v_main_~i~0_BEFORE_CALL_902 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_629|) (* 4 v_main_~i~0_BEFORE_CALL_902))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-07 00:41:38,747 INFO L193 IcfgInterpreter]: Reachable states at location L2-3 satisfy 180#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((|v_main_~#a~0.base_BEFORE_CALL_629| Int) (v_main_~i~0_BEFORE_CALL_902 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (not (= v_main_~i~0_BEFORE_CALL_902 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_629|) (* 4 v_main_~i~0_BEFORE_CALL_902)))) (<= 0 v_main_~i~0_BEFORE_CALL_902) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_902 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_902) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_902 ~N~0) (<= 0 |#NULL.base|) (= v_main_~i~0_BEFORE_CALL_902 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_629|) (* 4 v_main_~i~0_BEFORE_CALL_902))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:41:38,747 INFO L193 IcfgInterpreter]: Reachable states at location L12-2 satisfy 76#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (<= 0 main_~i~0) (= 0 |#NULL.base|) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (= |#valid| (store |old(#valid)| |main_~#a~0.base| 1)) (<= 0 (+ ~N~0 2147483648)) (= main_~k~0 0) (<= main_~k~0 0) (= |main_~#a~0.offset| 0) (<= ~N~0 2147483647) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= main_~i~0 0) (< 0 ~N~0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (= (store |old(#length)| |main_~#a~0.base| (* 4 ~N~0)) |#length|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0)) [2019-10-07 00:41:42,837 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 00:41:42,837 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 45, 44, 12] total 138 [2019-10-07 00:41:42,838 INFO L442 AbstractCegarLoop]: Interpolant automaton has 138 states [2019-10-07 00:41:42,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2019-10-07 00:41:42,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1274, Invalid=17632, Unknown=0, NotChecked=0, Total=18906 [2019-10-07 00:41:42,839 INFO L87 Difference]: Start difference. First operand 94 states and 112 transitions. Second operand 138 states. [2019-10-07 00:41:48,826 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2019-10-07 00:41:50,100 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2019-10-07 00:41:51,360 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2019-10-07 00:41:52,428 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-10-07 00:41:55,185 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2019-10-07 00:41:55,877 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-10-07 00:41:56,455 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2019-10-07 00:41:59,012 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2019-10-07 00:42:11,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:42:11,367 INFO L93 Difference]: Finished difference Result 170 states and 208 transitions. [2019-10-07 00:42:11,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2019-10-07 00:42:11,368 INFO L78 Accepts]: Start accepts. Automaton has 138 states. Word has length 157 [2019-10-07 00:42:11,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:42:11,369 INFO L225 Difference]: With dead ends: 170 [2019-10-07 00:42:11,369 INFO L226 Difference]: Without dead ends: 100 [2019-10-07 00:42:11,373 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 661 GetRequests, 325 SyntacticMatches, 54 SemanticMatches, 282 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25992 ImplicationChecksByTransitivity, 34.3s TimeCoverageRelationStatistics Valid=5163, Invalid=75209, Unknown=0, NotChecked=0, Total=80372 [2019-10-07 00:42:11,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2019-10-07 00:42:11,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 98. [2019-10-07 00:42:11,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2019-10-07 00:42:11,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 117 transitions. [2019-10-07 00:42:11,412 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 117 transitions. Word has length 157 [2019-10-07 00:42:11,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:42:11,413 INFO L462 AbstractCegarLoop]: Abstraction has 98 states and 117 transitions. [2019-10-07 00:42:11,413 INFO L463 AbstractCegarLoop]: Interpolant automaton has 138 states. [2019-10-07 00:42:11,413 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 117 transitions. [2019-10-07 00:42:11,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-10-07 00:42:11,414 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:42:11,414 INFO L385 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:42:11,622 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:42:11,622 INFO L410 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:42:11,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:42:11,622 INFO L82 PathProgramCache]: Analyzing trace with hash 8698381, now seen corresponding path program 33 times [2019-10-07 00:42:11,622 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:42:11,623 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:42:11,623 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:42:11,623 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:42:11,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:42:11,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:42:12,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 38 proven. 761 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2019-10-07 00:42:12,868 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:42:12,868 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:42:12,868 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 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:42:13,446 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-07 00:42:13,446 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-07 00:42:13,448 INFO L256 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 91 conjunts are in the unsatisfiable core [2019-10-07 00:42:13,451 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:42:19,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 0 proven. 799 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2019-10-07 00:42:19,078 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:42:19,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 38 proven. 761 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2019-10-07 00:42:19,290 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:42:19,290 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-07 00:42:19,290 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:42:19,291 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:42:19,291 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:42:19,291 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:42:19,306 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-07 00:42:19,512 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2019-10-07 00:42:19,529 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-10-07 00:42:19,531 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 00:42:19,532 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 00:42:19,532 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 175#(and (exists ((|v_main_~#a~0.base_BEFORE_CALL_676| Int) (v_main_~i~0_BEFORE_CALL_950 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (= v_main_~i~0_BEFORE_CALL_950 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_676|) (* 4 v_main_~i~0_BEFORE_CALL_950))) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_950) (= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_950 ~N~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (= v_main_~i~0_BEFORE_CALL_950 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_676|) (* 4 v_main_~i~0_BEFORE_CALL_950)))) (<= 0 v_main_~i~0_BEFORE_CALL_950) (= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_950 ~N~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:42:19,532 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 190#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_main_~#a~0.base_BEFORE_CALL_676| Int) (v_main_~i~0_BEFORE_CALL_950 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (= v_main_~i~0_BEFORE_CALL_950 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_676|) (* 4 v_main_~i~0_BEFORE_CALL_950))) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_950) (= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_950 ~N~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (= v_main_~i~0_BEFORE_CALL_950 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_676|) (* 4 v_main_~i~0_BEFORE_CALL_950)))) (<= 0 v_main_~i~0_BEFORE_CALL_950) (= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_950 ~N~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:42:19,532 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 199#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 00:42:19,532 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertEXIT satisfy 185#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((|v_main_~#a~0.base_BEFORE_CALL_676| Int) (v_main_~i~0_BEFORE_CALL_950 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (= v_main_~i~0_BEFORE_CALL_950 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_676|) (* 4 v_main_~i~0_BEFORE_CALL_950))) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_950) (= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_950 ~N~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (= v_main_~i~0_BEFORE_CALL_950 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_676|) (* 4 v_main_~i~0_BEFORE_CALL_950)))) (<= 0 v_main_~i~0_BEFORE_CALL_950) (= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_950 ~N~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:42:19,533 INFO L193 IcfgInterpreter]: Reachable states at location L18-2 satisfy 148#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:42:19,533 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:42:19,533 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (<= 0 ~N~0) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#memory_int| |old(#memory_int)|) (<= |old(~N~0)| 0) (<= 0 |old(~N~0)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:42:19,533 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 204#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:42:19,533 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 00:42:19,533 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 195#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_main_~#a~0.base_BEFORE_CALL_676| Int) (v_main_~i~0_BEFORE_CALL_950 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (= v_main_~i~0_BEFORE_CALL_950 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_676|) (* 4 v_main_~i~0_BEFORE_CALL_950))) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_950) (= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_950 ~N~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (= v_main_~i~0_BEFORE_CALL_950 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_676|) (* 4 v_main_~i~0_BEFORE_CALL_950)))) (<= 0 v_main_~i~0_BEFORE_CALL_950) (= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_950 ~N~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:42:19,534 INFO L193 IcfgInterpreter]: Reachable states at location L7 satisfy 38#(and (= 0 |#NULL.base|) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (<= 0 (+ ~N~0 2147483648)) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (<= |old(~N~0)| 0) (<= 0 |old(~N~0)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:42:19,534 INFO L193 IcfgInterpreter]: Reachable states at location L19-1 satisfy 166#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= |main_#t~mem1| 2147483647) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (= main_~i~0 |main_#t~mem1|) (<= 0 |main_#t~mem1|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:42:19,534 INFO L193 IcfgInterpreter]: Reachable states at location L19 satisfy 153#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:42:19,534 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 170#(exists ((|v_main_~#a~0.base_BEFORE_CALL_676| Int) (v_main_~i~0_BEFORE_CALL_950 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (= v_main_~i~0_BEFORE_CALL_950 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_676|) (* 4 v_main_~i~0_BEFORE_CALL_950))) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_950) (= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_950 ~N~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (= v_main_~i~0_BEFORE_CALL_950 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_676|) (* 4 v_main_~i~0_BEFORE_CALL_950)))) (<= 0 v_main_~i~0_BEFORE_CALL_950) (= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_950 ~N~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-07 00:42:19,534 INFO L193 IcfgInterpreter]: Reachable states at location L2-3 satisfy 180#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((|v_main_~#a~0.base_BEFORE_CALL_676| Int) (v_main_~i~0_BEFORE_CALL_950 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (= v_main_~i~0_BEFORE_CALL_950 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_676|) (* 4 v_main_~i~0_BEFORE_CALL_950))) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_950) (= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_950 ~N~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (= v_main_~i~0_BEFORE_CALL_950 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_676|) (* 4 v_main_~i~0_BEFORE_CALL_950)))) (<= 0 v_main_~i~0_BEFORE_CALL_950) (= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_950 ~N~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:42:19,535 INFO L193 IcfgInterpreter]: Reachable states at location L12-2 satisfy 76#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (<= 0 main_~i~0) (= 0 |#NULL.base|) (<= 0 |#NULL.base|) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (= |#valid| (store |old(#valid)| |main_~#a~0.base| 1)) (<= 0 (+ ~N~0 2147483648)) (= main_~k~0 0) (<= main_~k~0 0) (= |main_~#a~0.offset| 0) (<= ~N~0 2147483647) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= |main_~#a~0.offset| 0) (<= main_~i~0 0) (< 0 ~N~0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (= (store |old(#length)| |main_~#a~0.base| (* 4 ~N~0)) |#length|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0)) [2019-10-07 00:42:23,337 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 00:42:23,338 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 47, 46, 12] total 104 [2019-10-07 00:42:23,338 INFO L442 AbstractCegarLoop]: Interpolant automaton has 104 states [2019-10-07 00:42:23,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2019-10-07 00:42:23,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=331, Invalid=10381, Unknown=0, NotChecked=0, Total=10712 [2019-10-07 00:42:23,339 INFO L87 Difference]: Start difference. First operand 98 states and 117 transitions. Second operand 104 states. [2019-10-07 00:42:36,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:42:36,068 INFO L93 Difference]: Finished difference Result 106 states and 126 transitions. [2019-10-07 00:42:36,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2019-10-07 00:42:36,068 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 165 [2019-10-07 00:42:36,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:42:36,070 INFO L225 Difference]: With dead ends: 106 [2019-10-07 00:42:36,070 INFO L226 Difference]: Without dead ends: 104 [2019-10-07 00:42:36,072 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 380 SyntacticMatches, 59 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11937 ImplicationChecksByTransitivity, 18.0s TimeCoverageRelationStatistics Valid=1257, Invalid=35415, Unknown=0, NotChecked=0, Total=36672 [2019-10-07 00:42:36,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2019-10-07 00:42:36,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 101. [2019-10-07 00:42:36,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2019-10-07 00:42:36,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 121 transitions. [2019-10-07 00:42:36,105 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 121 transitions. Word has length 165 [2019-10-07 00:42:36,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:42:36,105 INFO L462 AbstractCegarLoop]: Abstraction has 101 states and 121 transitions. [2019-10-07 00:42:36,106 INFO L463 AbstractCegarLoop]: Interpolant automaton has 104 states. [2019-10-07 00:42:36,106 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 121 transitions. [2019-10-07 00:42:36,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-10-07 00:42:36,106 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:42:36,106 INFO L385 BasicCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:42:36,307 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:42:36,308 INFO L410 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:42:36,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:42:36,308 INFO L82 PathProgramCache]: Analyzing trace with hash 625419998, now seen corresponding path program 34 times [2019-10-07 00:42:36,308 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:42:36,309 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:42:36,309 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:42:36,309 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:42:36,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:42:36,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:42:37,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 592 proven. 268 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2019-10-07 00:42:37,151 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:42:37,151 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:42:37,151 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 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:42:37,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:42:37,712 INFO L256 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 44 conjunts are in the unsatisfiable core [2019-10-07 00:42:37,714 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:42:38,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 650 proven. 210 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2019-10-07 00:42:38,524 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:42:39,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 650 proven. 210 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2019-10-07 00:42:39,118 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:42:39,119 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-07 00:42:39,119 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:42:39,119 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:42:39,119 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:42:39,119 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:42:39,135 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 25 for LOIs [2019-10-07 00:42:39,337 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2019-10-07 00:42:39,348 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-10-07 00:42:39,351 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 00:42:39,351 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 00:42:39,351 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 175#(and (exists ((v_main_~i~0_BEFORE_CALL_999 Int) (|v_main_~#a~0.base_BEFORE_CALL_685| Int)) (or (and (= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_999 ~N~0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_685|) (* 4 v_main_~i~0_BEFORE_CALL_999)) v_main_~i~0_BEFORE_CALL_999) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_999) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_999 ~N~0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_999) (= |#NULL.offset| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_685|) (* 4 v_main_~i~0_BEFORE_CALL_999)) v_main_~i~0_BEFORE_CALL_999)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:42:39,352 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 190#(and (<= __VERIFIER_assert_~cond 0) (exists ((v_main_~i~0_BEFORE_CALL_999 Int) (|v_main_~#a~0.base_BEFORE_CALL_685| Int)) (or (and (= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_999 ~N~0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_685|) (* 4 v_main_~i~0_BEFORE_CALL_999)) v_main_~i~0_BEFORE_CALL_999) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_999) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_999 ~N~0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_999) (= |#NULL.offset| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_685|) (* 4 v_main_~i~0_BEFORE_CALL_999)) v_main_~i~0_BEFORE_CALL_999)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 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)) [2019-10-07 00:42:39,352 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 199#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 00:42:39,352 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertEXIT satisfy 185#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((v_main_~i~0_BEFORE_CALL_999 Int) (|v_main_~#a~0.base_BEFORE_CALL_685| Int)) (or (and (= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_999 ~N~0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_685|) (* 4 v_main_~i~0_BEFORE_CALL_999)) v_main_~i~0_BEFORE_CALL_999) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_999) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_999 ~N~0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_999) (= |#NULL.offset| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_685|) (* 4 v_main_~i~0_BEFORE_CALL_999)) v_main_~i~0_BEFORE_CALL_999)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:42:39,352 INFO L193 IcfgInterpreter]: Reachable states at location L18-2 satisfy 148#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:42:39,352 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:42:39,352 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (<= 0 ~N~0) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:42:39,352 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 204#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:42:39,352 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 00:42:39,352 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 195#(and (<= __VERIFIER_assert_~cond 0) (exists ((v_main_~i~0_BEFORE_CALL_999 Int) (|v_main_~#a~0.base_BEFORE_CALL_685| Int)) (or (and (= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_999 ~N~0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_685|) (* 4 v_main_~i~0_BEFORE_CALL_999)) v_main_~i~0_BEFORE_CALL_999) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_999) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_999 ~N~0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_999) (= |#NULL.offset| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_685|) (* 4 v_main_~i~0_BEFORE_CALL_999)) v_main_~i~0_BEFORE_CALL_999)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 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)) [2019-10-07 00:42:39,353 INFO L193 IcfgInterpreter]: Reachable states at location L7 satisfy 38#(and (= 0 |#NULL.base|) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (<= 0 (+ ~N~0 2147483648)) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:42:39,353 INFO L193 IcfgInterpreter]: Reachable states at location L19-1 satisfy 166#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= |main_#t~mem1| 2147483647) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (= main_~i~0 |main_#t~mem1|) (<= 0 |main_#t~mem1|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:42:39,353 INFO L193 IcfgInterpreter]: Reachable states at location L19 satisfy 153#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:42:39,353 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 170#(exists ((v_main_~i~0_BEFORE_CALL_999 Int) (|v_main_~#a~0.base_BEFORE_CALL_685| Int)) (or (and (= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_999 ~N~0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_685|) (* 4 v_main_~i~0_BEFORE_CALL_999)) v_main_~i~0_BEFORE_CALL_999) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_999) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_999 ~N~0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_999) (= |#NULL.offset| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_685|) (* 4 v_main_~i~0_BEFORE_CALL_999)) v_main_~i~0_BEFORE_CALL_999)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-07 00:42:39,353 INFO L193 IcfgInterpreter]: Reachable states at location L2-3 satisfy 180#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((v_main_~i~0_BEFORE_CALL_999 Int) (|v_main_~#a~0.base_BEFORE_CALL_685| Int)) (or (and (= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_999 ~N~0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_685|) (* 4 v_main_~i~0_BEFORE_CALL_999)) v_main_~i~0_BEFORE_CALL_999) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_999) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_999 ~N~0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_999) (= |#NULL.offset| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_685|) (* 4 v_main_~i~0_BEFORE_CALL_999)) v_main_~i~0_BEFORE_CALL_999)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:42:39,354 INFO L193 IcfgInterpreter]: Reachable states at location L12-2 satisfy 76#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (<= 0 main_~i~0) (= 0 |#NULL.base|) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (= |#valid| (store |old(#valid)| |main_~#a~0.base| 1)) (<= 0 (+ ~N~0 2147483648)) (= main_~k~0 0) (<= main_~k~0 0) (= |main_~#a~0.offset| 0) (<= ~N~0 2147483647) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= main_~i~0 0) (< 0 ~N~0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (= (store |old(#length)| |main_~#a~0.base| (* 4 ~N~0)) |#length|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0)) [2019-10-07 00:42:41,528 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 00:42:41,529 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 45, 44, 12] total 80 [2019-10-07 00:42:41,529 INFO L442 AbstractCegarLoop]: Interpolant automaton has 80 states [2019-10-07 00:42:41,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2019-10-07 00:42:41,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1100, Invalid=5220, Unknown=0, NotChecked=0, Total=6320 [2019-10-07 00:42:41,530 INFO L87 Difference]: Start difference. First operand 101 states and 121 transitions. Second operand 80 states. [2019-10-07 00:42:51,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:42:51,894 INFO L93 Difference]: Finished difference Result 184 states and 224 transitions. [2019-10-07 00:42:51,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2019-10-07 00:42:51,894 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 172 [2019-10-07 00:42:51,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:42:51,896 INFO L225 Difference]: With dead ends: 184 [2019-10-07 00:42:51,896 INFO L226 Difference]: Without dead ends: 106 [2019-10-07 00:42:51,899 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 691 GetRequests, 420 SyntacticMatches, 61 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18657 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=7176, Invalid=37556, Unknown=0, NotChecked=0, Total=44732 [2019-10-07 00:42:51,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2019-10-07 00:42:51,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 102. [2019-10-07 00:42:51,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2019-10-07 00:42:51,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 122 transitions. [2019-10-07 00:42:51,934 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 122 transitions. Word has length 172 [2019-10-07 00:42:51,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:42:51,934 INFO L462 AbstractCegarLoop]: Abstraction has 102 states and 122 transitions. [2019-10-07 00:42:51,934 INFO L463 AbstractCegarLoop]: Interpolant automaton has 80 states. [2019-10-07 00:42:51,934 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 122 transitions. [2019-10-07 00:42:51,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-10-07 00:42:51,935 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:42:51,936 INFO L385 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:42:52,139 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:42:52,140 INFO L410 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:42:52,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:42:52,141 INFO L82 PathProgramCache]: Analyzing trace with hash -29612039, now seen corresponding path program 35 times [2019-10-07 00:42:52,141 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:42:52,141 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:42:52,141 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:42:52,142 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:42:52,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:42:52,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:42:53,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 40 proven. 841 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2019-10-07 00:42:53,938 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:42:53,938 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:42:53,938 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 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:42:56,032 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2019-10-07 00:42:56,033 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-07 00:42:56,039 INFO L256 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 98 conjunts are in the unsatisfiable core [2019-10-07 00:42:56,041 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:43:02,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 57 proven. 881 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2019-10-07 00:43:02,349 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:43:04,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 40 proven. 841 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2019-10-07 00:43:04,860 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:43:04,861 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-07 00:43:04,861 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:43:04,861 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:43:04,861 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:43:04,862 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:43:04,879 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-07 00:43:05,120 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2019-10-07 00:43:05,127 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-10-07 00:43:05,130 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 00:43:05,131 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 00:43:05,131 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 175#(and (exists ((v_main_~i~0_BEFORE_CALL_1049 Int) (|v_main_~#a~0.base_BEFORE_CALL_734| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (< v_main_~i~0_BEFORE_CALL_1049 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1049) (<= 0 |#NULL.base|) (not (= v_main_~i~0_BEFORE_CALL_1049 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_734|) (* 4 v_main_~i~0_BEFORE_CALL_1049)))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (< v_main_~i~0_BEFORE_CALL_1049 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1049) (<= 0 |#NULL.base|) (= v_main_~i~0_BEFORE_CALL_1049 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_734|) (* 4 v_main_~i~0_BEFORE_CALL_1049))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:43:05,131 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 190#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_main_~i~0_BEFORE_CALL_1049 Int) (|v_main_~#a~0.base_BEFORE_CALL_734| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (< v_main_~i~0_BEFORE_CALL_1049 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1049) (<= 0 |#NULL.base|) (not (= v_main_~i~0_BEFORE_CALL_1049 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_734|) (* 4 v_main_~i~0_BEFORE_CALL_1049)))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (< v_main_~i~0_BEFORE_CALL_1049 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1049) (<= 0 |#NULL.base|) (= v_main_~i~0_BEFORE_CALL_1049 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_734|) (* 4 v_main_~i~0_BEFORE_CALL_1049))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:43:05,131 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 199#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 00:43:05,131 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertEXIT satisfy 185#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((v_main_~i~0_BEFORE_CALL_1049 Int) (|v_main_~#a~0.base_BEFORE_CALL_734| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (< v_main_~i~0_BEFORE_CALL_1049 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1049) (<= 0 |#NULL.base|) (not (= v_main_~i~0_BEFORE_CALL_1049 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_734|) (* 4 v_main_~i~0_BEFORE_CALL_1049)))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (< v_main_~i~0_BEFORE_CALL_1049 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1049) (<= 0 |#NULL.base|) (= v_main_~i~0_BEFORE_CALL_1049 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_734|) (* 4 v_main_~i~0_BEFORE_CALL_1049))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:43:05,132 INFO L193 IcfgInterpreter]: Reachable states at location L18-2 satisfy 148#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:43:05,132 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:43:05,132 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (<= 0 ~N~0) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#memory_int| |old(#memory_int)|) (<= |old(~N~0)| 0) (<= 0 |old(~N~0)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:43:05,132 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 204#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:43:05,132 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 00:43:05,133 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 195#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_main_~i~0_BEFORE_CALL_1049 Int) (|v_main_~#a~0.base_BEFORE_CALL_734| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (< v_main_~i~0_BEFORE_CALL_1049 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1049) (<= 0 |#NULL.base|) (not (= v_main_~i~0_BEFORE_CALL_1049 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_734|) (* 4 v_main_~i~0_BEFORE_CALL_1049)))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (< v_main_~i~0_BEFORE_CALL_1049 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1049) (<= 0 |#NULL.base|) (= v_main_~i~0_BEFORE_CALL_1049 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_734|) (* 4 v_main_~i~0_BEFORE_CALL_1049))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:43:05,133 INFO L193 IcfgInterpreter]: Reachable states at location L7 satisfy 38#(and (= 0 |#NULL.base|) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (<= 0 (+ ~N~0 2147483648)) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (<= |old(~N~0)| 0) (<= 0 |old(~N~0)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:43:05,133 INFO L193 IcfgInterpreter]: Reachable states at location L19-1 satisfy 166#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= |main_#t~mem1| 2147483647) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (= main_~i~0 |main_#t~mem1|) (<= 0 |main_#t~mem1|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:43:05,133 INFO L193 IcfgInterpreter]: Reachable states at location L19 satisfy 153#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:43:05,134 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 170#(exists ((v_main_~i~0_BEFORE_CALL_1049 Int) (|v_main_~#a~0.base_BEFORE_CALL_734| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (< v_main_~i~0_BEFORE_CALL_1049 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1049) (<= 0 |#NULL.base|) (not (= v_main_~i~0_BEFORE_CALL_1049 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_734|) (* 4 v_main_~i~0_BEFORE_CALL_1049)))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (< v_main_~i~0_BEFORE_CALL_1049 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1049) (<= 0 |#NULL.base|) (= v_main_~i~0_BEFORE_CALL_1049 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_734|) (* 4 v_main_~i~0_BEFORE_CALL_1049))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-07 00:43:05,134 INFO L193 IcfgInterpreter]: Reachable states at location L2-3 satisfy 180#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((v_main_~i~0_BEFORE_CALL_1049 Int) (|v_main_~#a~0.base_BEFORE_CALL_734| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (< v_main_~i~0_BEFORE_CALL_1049 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1049) (<= 0 |#NULL.base|) (not (= v_main_~i~0_BEFORE_CALL_1049 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_734|) (* 4 v_main_~i~0_BEFORE_CALL_1049)))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (< v_main_~i~0_BEFORE_CALL_1049 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1049) (<= 0 |#NULL.base|) (= v_main_~i~0_BEFORE_CALL_1049 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_734|) (* 4 v_main_~i~0_BEFORE_CALL_1049))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:43:05,134 INFO L193 IcfgInterpreter]: Reachable states at location L12-2 satisfy 76#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (<= 0 main_~i~0) (= 0 |#NULL.base|) (<= 0 |#NULL.base|) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (= |#valid| (store |old(#valid)| |main_~#a~0.base| 1)) (<= 0 (+ ~N~0 2147483648)) (= main_~k~0 0) (<= main_~k~0 0) (= |main_~#a~0.offset| 0) (<= ~N~0 2147483647) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= |main_~#a~0.offset| 0) (<= main_~i~0 0) (< 0 ~N~0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (= (store |old(#length)| |main_~#a~0.base| (* 4 ~N~0)) |#length|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0)) [2019-10-07 00:43:09,721 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 00:43:09,722 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 51, 48, 12] total 130 [2019-10-07 00:43:09,722 INFO L442 AbstractCegarLoop]: Interpolant automaton has 130 states [2019-10-07 00:43:09,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2019-10-07 00:43:09,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=394, Invalid=16376, Unknown=0, NotChecked=0, Total=16770 [2019-10-07 00:43:09,723 INFO L87 Difference]: Start difference. First operand 102 states and 122 transitions. Second operand 130 states. [2019-10-07 00:43:28,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:43:28,854 INFO L93 Difference]: Finished difference Result 110 states and 131 transitions. [2019-10-07 00:43:28,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2019-10-07 00:43:28,855 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 173 [2019-10-07 00:43:28,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:43:28,856 INFO L225 Difference]: With dead ends: 110 [2019-10-07 00:43:28,856 INFO L226 Difference]: Without dead ends: 108 [2019-10-07 00:43:28,858 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 659 GetRequests, 367 SyntacticMatches, 72 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12290 ImplicationChecksByTransitivity, 27.5s TimeCoverageRelationStatistics Valid=1448, Invalid=47614, Unknown=0, NotChecked=0, Total=49062 [2019-10-07 00:43:28,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2019-10-07 00:43:28,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 105. [2019-10-07 00:43:28,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2019-10-07 00:43:28,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 126 transitions. [2019-10-07 00:43:28,900 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 126 transitions. Word has length 173 [2019-10-07 00:43:28,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:43:28,901 INFO L462 AbstractCegarLoop]: Abstraction has 105 states and 126 transitions. [2019-10-07 00:43:28,901 INFO L463 AbstractCegarLoop]: Interpolant automaton has 130 states. [2019-10-07 00:43:28,901 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 126 transitions. [2019-10-07 00:43:28,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2019-10-07 00:43:28,902 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:43:28,902 INFO L385 BasicCegarLoop]: trace histogram [22, 22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:43:29,110 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:43:29,111 INFO L410 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:43:29,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:43:29,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1063286642, now seen corresponding path program 36 times [2019-10-07 00:43:29,111 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:43:29,112 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:43:29,112 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:43:29,112 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:43:29,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:43:29,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:43:29,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 653 proven. 292 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2019-10-07 00:43:29,844 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:43:29,844 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:43:29,844 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 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:43:30,445 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-07 00:43:30,446 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-07 00:43:30,448 INFO L256 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 46 conjunts are in the unsatisfiable core [2019-10-07 00:43:30,450 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:43:31,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 714 proven. 231 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2019-10-07 00:43:31,665 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:43:32,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 714 proven. 231 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2019-10-07 00:43:32,295 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:43:32,296 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-07 00:43:32,296 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:43:32,296 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:43:32,296 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:43:32,296 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:43:32,313 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 25 for LOIs [2019-10-07 00:43:32,504 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2019-10-07 00:43:32,511 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-10-07 00:43:32,514 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 00:43:32,515 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 00:43:32,515 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 175#(and (exists ((v_main_~i~0_BEFORE_CALL_1100 Int) (|v_main_~#a~0.base_BEFORE_CALL_743| Int)) (or (and (<= 0 v_main_~i~0_BEFORE_CALL_1100) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (= v_main_~i~0_BEFORE_CALL_1100 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_743|) (* 4 v_main_~i~0_BEFORE_CALL_1100))) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_1100 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (<= 0 v_main_~i~0_BEFORE_CALL_1100) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (= v_main_~i~0_BEFORE_CALL_1100 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_743|) (* 4 v_main_~i~0_BEFORE_CALL_1100)))) (< v_main_~i~0_BEFORE_CALL_1100 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:43:32,515 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 190#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_main_~i~0_BEFORE_CALL_1100 Int) (|v_main_~#a~0.base_BEFORE_CALL_743| Int)) (or (and (<= 0 v_main_~i~0_BEFORE_CALL_1100) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (= v_main_~i~0_BEFORE_CALL_1100 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_743|) (* 4 v_main_~i~0_BEFORE_CALL_1100))) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_1100 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (<= 0 v_main_~i~0_BEFORE_CALL_1100) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (= v_main_~i~0_BEFORE_CALL_1100 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_743|) (* 4 v_main_~i~0_BEFORE_CALL_1100)))) (< v_main_~i~0_BEFORE_CALL_1100 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:43:32,515 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 199#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 00:43:32,516 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertEXIT satisfy 185#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((v_main_~i~0_BEFORE_CALL_1100 Int) (|v_main_~#a~0.base_BEFORE_CALL_743| Int)) (or (and (<= 0 v_main_~i~0_BEFORE_CALL_1100) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (= v_main_~i~0_BEFORE_CALL_1100 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_743|) (* 4 v_main_~i~0_BEFORE_CALL_1100))) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_1100 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (<= 0 v_main_~i~0_BEFORE_CALL_1100) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (= v_main_~i~0_BEFORE_CALL_1100 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_743|) (* 4 v_main_~i~0_BEFORE_CALL_1100)))) (< v_main_~i~0_BEFORE_CALL_1100 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:43:32,516 INFO L193 IcfgInterpreter]: Reachable states at location L18-2 satisfy 148#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:43:32,516 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:43:32,516 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 |old(~N~0)|) (<= 0 ~N~0) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:43:32,516 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 204#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:43:32,517 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 00:43:32,517 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 195#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_main_~i~0_BEFORE_CALL_1100 Int) (|v_main_~#a~0.base_BEFORE_CALL_743| Int)) (or (and (<= 0 v_main_~i~0_BEFORE_CALL_1100) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (= v_main_~i~0_BEFORE_CALL_1100 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_743|) (* 4 v_main_~i~0_BEFORE_CALL_1100))) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_1100 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (<= 0 v_main_~i~0_BEFORE_CALL_1100) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (= v_main_~i~0_BEFORE_CALL_1100 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_743|) (* 4 v_main_~i~0_BEFORE_CALL_1100)))) (< v_main_~i~0_BEFORE_CALL_1100 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:43:32,517 INFO L193 IcfgInterpreter]: Reachable states at location L7 satisfy 38#(and (= 0 |#NULL.base|) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 |old(~N~0)|) (<= 0 (+ ~N~0 2147483648)) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:43:32,517 INFO L193 IcfgInterpreter]: Reachable states at location L19-1 satisfy 166#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= |main_#t~mem1| 2147483647) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (= main_~i~0 |main_#t~mem1|) (<= 0 |main_#t~mem1|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:43:32,518 INFO L193 IcfgInterpreter]: Reachable states at location L19 satisfy 153#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:43:32,518 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 170#(exists ((v_main_~i~0_BEFORE_CALL_1100 Int) (|v_main_~#a~0.base_BEFORE_CALL_743| Int)) (or (and (<= 0 v_main_~i~0_BEFORE_CALL_1100) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (= v_main_~i~0_BEFORE_CALL_1100 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_743|) (* 4 v_main_~i~0_BEFORE_CALL_1100))) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_1100 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (<= 0 v_main_~i~0_BEFORE_CALL_1100) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (= v_main_~i~0_BEFORE_CALL_1100 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_743|) (* 4 v_main_~i~0_BEFORE_CALL_1100)))) (< v_main_~i~0_BEFORE_CALL_1100 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-07 00:43:32,518 INFO L193 IcfgInterpreter]: Reachable states at location L2-3 satisfy 180#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((v_main_~i~0_BEFORE_CALL_1100 Int) (|v_main_~#a~0.base_BEFORE_CALL_743| Int)) (or (and (<= 0 v_main_~i~0_BEFORE_CALL_1100) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (= v_main_~i~0_BEFORE_CALL_1100 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_743|) (* 4 v_main_~i~0_BEFORE_CALL_1100))) (<= 0 |#NULL.base|) (< v_main_~i~0_BEFORE_CALL_1100 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (<= 0 v_main_~i~0_BEFORE_CALL_1100) (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (= v_main_~i~0_BEFORE_CALL_1100 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_743|) (* 4 v_main_~i~0_BEFORE_CALL_1100)))) (< v_main_~i~0_BEFORE_CALL_1100 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:43:32,518 INFO L193 IcfgInterpreter]: Reachable states at location L12-2 satisfy 76#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (<= 0 main_~i~0) (= 0 |#NULL.base|) (<= 0 |#NULL.base|) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (= |#valid| (store |old(#valid)| |main_~#a~0.base| 1)) (<= 0 (+ ~N~0 2147483648)) (= main_~k~0 0) (<= main_~k~0 0) (= |main_~#a~0.offset| 0) (<= ~N~0 2147483647) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= |main_~#a~0.offset| 0) (<= main_~i~0 0) (< 0 ~N~0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (= (store |old(#length)| |main_~#a~0.base| (* 4 ~N~0)) |#length|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0)) [2019-10-07 00:43:34,844 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 00:43:34,844 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 47, 46, 12] total 83 [2019-10-07 00:43:34,845 INFO L442 AbstractCegarLoop]: Interpolant automaton has 83 states [2019-10-07 00:43:34,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2019-10-07 00:43:34,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1194, Invalid=5612, Unknown=0, NotChecked=0, Total=6806 [2019-10-07 00:43:34,845 INFO L87 Difference]: Start difference. First operand 105 states and 126 transitions. Second operand 83 states. [2019-10-07 00:43:45,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:43:45,881 INFO L93 Difference]: Finished difference Result 191 states and 233 transitions. [2019-10-07 00:43:45,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2019-10-07 00:43:45,881 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 180 [2019-10-07 00:43:45,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:43:45,883 INFO L225 Difference]: With dead ends: 191 [2019-10-07 00:43:45,883 INFO L226 Difference]: Without dead ends: 110 [2019-10-07 00:43:45,885 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 723 GetRequests, 440 SyntacticMatches, 64 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20335 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=7821, Invalid=40799, Unknown=0, NotChecked=0, Total=48620 [2019-10-07 00:43:45,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2019-10-07 00:43:45,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 106. [2019-10-07 00:43:45,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2019-10-07 00:43:45,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 127 transitions. [2019-10-07 00:43:45,928 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 127 transitions. Word has length 180 [2019-10-07 00:43:45,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:43:45,928 INFO L462 AbstractCegarLoop]: Abstraction has 106 states and 127 transitions. [2019-10-07 00:43:45,928 INFO L463 AbstractCegarLoop]: Interpolant automaton has 83 states. [2019-10-07 00:43:45,929 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 127 transitions. [2019-10-07 00:43:45,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2019-10-07 00:43:45,930 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:43:45,930 INFO L385 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:43:46,136 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:43:46,137 INFO L410 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:43:46,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:43:46,137 INFO L82 PathProgramCache]: Analyzing trace with hash 989605261, now seen corresponding path program 37 times [2019-10-07 00:43:46,137 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:43:46,137 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:43:46,137 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:43:46,138 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:43:46,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:43:46,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:43:47,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 42 proven. 925 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2019-10-07 00:43:47,582 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:43:47,582 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:43:47,582 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 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:43:48,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:43:48,254 INFO L256 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 99 conjunts are in the unsatisfiable core [2019-10-07 00:43:48,257 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:43:54,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 0 proven. 967 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2019-10-07 00:43:54,663 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:43:55,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 42 proven. 925 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2019-10-07 00:43:55,053 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:43:55,055 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-07 00:43:55,055 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:43:55,055 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:43:55,056 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:43:55,056 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:43:55,075 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 25 for LOIs [2019-10-07 00:43:55,418 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2019-10-07 00:43:55,430 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-10-07 00:43:55,432 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 00:43:55,432 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 00:43:55,433 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 175#(and (exists ((v_main_~i~0_BEFORE_CALL_1152 Int) (|v_main_~#a~0.base_BEFORE_CALL_794| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1152) (< v_main_~i~0_BEFORE_CALL_1152 ~N~0) (not (= v_main_~i~0_BEFORE_CALL_1152 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_794|) (* 4 v_main_~i~0_BEFORE_CALL_1152)))) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (= v_main_~i~0_BEFORE_CALL_1152 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_794|) (* 4 v_main_~i~0_BEFORE_CALL_1152))) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1152) (< v_main_~i~0_BEFORE_CALL_1152 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:43:55,433 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 190#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond) (exists ((v_main_~i~0_BEFORE_CALL_1152 Int) (|v_main_~#a~0.base_BEFORE_CALL_794| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1152) (< v_main_~i~0_BEFORE_CALL_1152 ~N~0) (not (= v_main_~i~0_BEFORE_CALL_1152 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_794|) (* 4 v_main_~i~0_BEFORE_CALL_1152)))) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (= v_main_~i~0_BEFORE_CALL_1152 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_794|) (* 4 v_main_~i~0_BEFORE_CALL_1152))) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1152) (< v_main_~i~0_BEFORE_CALL_1152 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:43:55,433 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 199#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 00:43:55,433 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertEXIT satisfy 185#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((v_main_~i~0_BEFORE_CALL_1152 Int) (|v_main_~#a~0.base_BEFORE_CALL_794| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1152) (< v_main_~i~0_BEFORE_CALL_1152 ~N~0) (not (= v_main_~i~0_BEFORE_CALL_1152 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_794|) (* 4 v_main_~i~0_BEFORE_CALL_1152)))) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (= v_main_~i~0_BEFORE_CALL_1152 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_794|) (* 4 v_main_~i~0_BEFORE_CALL_1152))) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1152) (< v_main_~i~0_BEFORE_CALL_1152 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:43:55,433 INFO L193 IcfgInterpreter]: Reachable states at location L18-2 satisfy 148#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:43:55,434 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:43:55,434 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (<= 0 ~N~0) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:43:55,434 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 204#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:43:55,434 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 00:43:55,434 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 195#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond) (exists ((v_main_~i~0_BEFORE_CALL_1152 Int) (|v_main_~#a~0.base_BEFORE_CALL_794| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1152) (< v_main_~i~0_BEFORE_CALL_1152 ~N~0) (not (= v_main_~i~0_BEFORE_CALL_1152 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_794|) (* 4 v_main_~i~0_BEFORE_CALL_1152)))) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (= v_main_~i~0_BEFORE_CALL_1152 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_794|) (* 4 v_main_~i~0_BEFORE_CALL_1152))) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1152) (< v_main_~i~0_BEFORE_CALL_1152 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:43:55,434 INFO L193 IcfgInterpreter]: Reachable states at location L7 satisfy 38#(and (<= ~N~0 2147483647) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (<= 0 (+ ~N~0 2147483648)) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:43:55,435 INFO L193 IcfgInterpreter]: Reachable states at location L19-1 satisfy 166#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= |main_#t~mem1| 2147483647) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (= main_~i~0 |main_#t~mem1|) (<= 0 |main_#t~mem1|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:43:55,435 INFO L193 IcfgInterpreter]: Reachable states at location L19 satisfy 153#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:43:55,435 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 170#(exists ((v_main_~i~0_BEFORE_CALL_1152 Int) (|v_main_~#a~0.base_BEFORE_CALL_794| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1152) (< v_main_~i~0_BEFORE_CALL_1152 ~N~0) (not (= v_main_~i~0_BEFORE_CALL_1152 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_794|) (* 4 v_main_~i~0_BEFORE_CALL_1152)))) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (= v_main_~i~0_BEFORE_CALL_1152 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_794|) (* 4 v_main_~i~0_BEFORE_CALL_1152))) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1152) (< v_main_~i~0_BEFORE_CALL_1152 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-07 00:43:55,435 INFO L193 IcfgInterpreter]: Reachable states at location L2-3 satisfy 180#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((v_main_~i~0_BEFORE_CALL_1152 Int) (|v_main_~#a~0.base_BEFORE_CALL_794| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1152) (< v_main_~i~0_BEFORE_CALL_1152 ~N~0) (not (= v_main_~i~0_BEFORE_CALL_1152 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_794|) (* 4 v_main_~i~0_BEFORE_CALL_1152)))) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (= v_main_~i~0_BEFORE_CALL_1152 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_794|) (* 4 v_main_~i~0_BEFORE_CALL_1152))) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1152) (< v_main_~i~0_BEFORE_CALL_1152 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:43:55,435 INFO L193 IcfgInterpreter]: Reachable states at location L12-2 satisfy 76#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (<= 0 main_~i~0) (= 0 |#NULL.base|) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (= |#valid| (store |old(#valid)| |main_~#a~0.base| 1)) (<= 0 (+ ~N~0 2147483648)) (= main_~k~0 0) (<= main_~k~0 0) (= |main_~#a~0.offset| 0) (<= ~N~0 2147483647) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= main_~i~0 0) (< 0 ~N~0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (= (store |old(#length)| |main_~#a~0.base| (* 4 ~N~0)) |#length|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0)) [2019-10-07 00:43:59,741 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 00:43:59,741 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 51, 50, 12] total 112 [2019-10-07 00:43:59,742 INFO L442 AbstractCegarLoop]: Interpolant automaton has 112 states [2019-10-07 00:43:59,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2019-10-07 00:43:59,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=12075, Unknown=0, NotChecked=0, Total=12432 [2019-10-07 00:43:59,743 INFO L87 Difference]: Start difference. First operand 106 states and 127 transitions. Second operand 112 states. [2019-10-07 00:44:14,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:44:14,749 INFO L93 Difference]: Finished difference Result 114 states and 136 transitions. [2019-10-07 00:44:14,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2019-10-07 00:44:14,750 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 181 [2019-10-07 00:44:14,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:44:14,751 INFO L225 Difference]: With dead ends: 114 [2019-10-07 00:44:14,751 INFO L226 Difference]: Without dead ends: 112 [2019-10-07 00:44:14,754 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 689 GetRequests, 418 SyntacticMatches, 65 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14144 ImplicationChecksByTransitivity, 20.1s TimeCoverageRelationStatistics Valid=1369, Invalid=41687, Unknown=0, NotChecked=0, Total=43056 [2019-10-07 00:44:14,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2019-10-07 00:44:14,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 109. [2019-10-07 00:44:14,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2019-10-07 00:44:14,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 131 transitions. [2019-10-07 00:44:14,790 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 131 transitions. Word has length 181 [2019-10-07 00:44:14,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:44:14,790 INFO L462 AbstractCegarLoop]: Abstraction has 109 states and 131 transitions. [2019-10-07 00:44:14,790 INFO L463 AbstractCegarLoop]: Interpolant automaton has 112 states. [2019-10-07 00:44:14,791 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 131 transitions. [2019-10-07 00:44:14,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2019-10-07 00:44:14,792 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:44:14,792 INFO L385 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:44:14,992 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:44:14,993 INFO L410 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:44:14,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:44:14,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1632713890, now seen corresponding path program 38 times [2019-10-07 00:44:14,994 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:44:14,994 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:44:14,994 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:44:14,994 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:44:14,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:44:15,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:44:16,074 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 717 proven. 317 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2019-10-07 00:44:16,074 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:44:16,074 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:44:16,074 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 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:44:19,420 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2019-10-07 00:44:19,420 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-07 00:44:19,428 INFO L256 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 48 conjunts are in the unsatisfiable core [2019-10-07 00:44:19,430 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:44:20,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 781 proven. 253 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2019-10-07 00:44:20,332 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:44:21,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 781 proven. 253 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2019-10-07 00:44:21,057 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:44:21,057 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-07 00:44:21,057 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:44:21,057 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:44:21,058 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:44:21,058 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:44:21,073 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-07 00:44:21,264 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2019-10-07 00:44:21,270 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-10-07 00:44:21,277 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 00:44:21,278 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 00:44:21,278 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 175#(and (exists ((v_main_~i~0_BEFORE_CALL_1205 Int) (|v_main_~#a~0.base_BEFORE_CALL_803| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (not (= v_main_~i~0_BEFORE_CALL_1205 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_803|) (* 4 v_main_~i~0_BEFORE_CALL_1205)))) (<= 0 v_main_~i~0_BEFORE_CALL_1205) (< v_main_~i~0_BEFORE_CALL_1205 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= v_main_~i~0_BEFORE_CALL_1205 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_803|) (* 4 v_main_~i~0_BEFORE_CALL_1205))) (= |__VERIFIER_assert_#in~cond| 1) (<= 0 v_main_~i~0_BEFORE_CALL_1205) (< v_main_~i~0_BEFORE_CALL_1205 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:44:21,278 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 190#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_main_~i~0_BEFORE_CALL_1205 Int) (|v_main_~#a~0.base_BEFORE_CALL_803| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (not (= v_main_~i~0_BEFORE_CALL_1205 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_803|) (* 4 v_main_~i~0_BEFORE_CALL_1205)))) (<= 0 v_main_~i~0_BEFORE_CALL_1205) (< v_main_~i~0_BEFORE_CALL_1205 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= v_main_~i~0_BEFORE_CALL_1205 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_803|) (* 4 v_main_~i~0_BEFORE_CALL_1205))) (= |__VERIFIER_assert_#in~cond| 1) (<= 0 v_main_~i~0_BEFORE_CALL_1205) (< v_main_~i~0_BEFORE_CALL_1205 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:44:21,278 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 199#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 00:44:21,278 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertEXIT satisfy 185#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((v_main_~i~0_BEFORE_CALL_1205 Int) (|v_main_~#a~0.base_BEFORE_CALL_803| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (not (= v_main_~i~0_BEFORE_CALL_1205 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_803|) (* 4 v_main_~i~0_BEFORE_CALL_1205)))) (<= 0 v_main_~i~0_BEFORE_CALL_1205) (< v_main_~i~0_BEFORE_CALL_1205 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= v_main_~i~0_BEFORE_CALL_1205 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_803|) (* 4 v_main_~i~0_BEFORE_CALL_1205))) (= |__VERIFIER_assert_#in~cond| 1) (<= 0 v_main_~i~0_BEFORE_CALL_1205) (< v_main_~i~0_BEFORE_CALL_1205 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:44:21,278 INFO L193 IcfgInterpreter]: Reachable states at location L18-2 satisfy 148#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:44:21,279 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:44:21,279 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (<= 0 ~N~0) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#memory_int| |old(#memory_int)|) (<= |old(~N~0)| 0) (<= 0 |old(~N~0)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:44:21,279 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 204#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:44:21,279 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 00:44:21,279 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 195#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_main_~i~0_BEFORE_CALL_1205 Int) (|v_main_~#a~0.base_BEFORE_CALL_803| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (not (= v_main_~i~0_BEFORE_CALL_1205 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_803|) (* 4 v_main_~i~0_BEFORE_CALL_1205)))) (<= 0 v_main_~i~0_BEFORE_CALL_1205) (< v_main_~i~0_BEFORE_CALL_1205 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= v_main_~i~0_BEFORE_CALL_1205 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_803|) (* 4 v_main_~i~0_BEFORE_CALL_1205))) (= |__VERIFIER_assert_#in~cond| 1) (<= 0 v_main_~i~0_BEFORE_CALL_1205) (< v_main_~i~0_BEFORE_CALL_1205 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:44:21,279 INFO L193 IcfgInterpreter]: Reachable states at location L7 satisfy 38#(and (= 0 |#NULL.base|) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (<= 0 (+ ~N~0 2147483648)) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (<= |old(~N~0)| 0) (<= 0 |old(~N~0)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:44:21,280 INFO L193 IcfgInterpreter]: Reachable states at location L19-1 satisfy 166#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= |main_#t~mem1| 2147483647) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (= main_~i~0 |main_#t~mem1|) (<= 0 |main_#t~mem1|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:44:21,280 INFO L193 IcfgInterpreter]: Reachable states at location L19 satisfy 153#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:44:21,280 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 170#(exists ((v_main_~i~0_BEFORE_CALL_1205 Int) (|v_main_~#a~0.base_BEFORE_CALL_803| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (not (= v_main_~i~0_BEFORE_CALL_1205 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_803|) (* 4 v_main_~i~0_BEFORE_CALL_1205)))) (<= 0 v_main_~i~0_BEFORE_CALL_1205) (< v_main_~i~0_BEFORE_CALL_1205 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= v_main_~i~0_BEFORE_CALL_1205 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_803|) (* 4 v_main_~i~0_BEFORE_CALL_1205))) (= |__VERIFIER_assert_#in~cond| 1) (<= 0 v_main_~i~0_BEFORE_CALL_1205) (< v_main_~i~0_BEFORE_CALL_1205 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-07 00:44:21,280 INFO L193 IcfgInterpreter]: Reachable states at location L2-3 satisfy 180#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((v_main_~i~0_BEFORE_CALL_1205 Int) (|v_main_~#a~0.base_BEFORE_CALL_803| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (not (= v_main_~i~0_BEFORE_CALL_1205 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_803|) (* 4 v_main_~i~0_BEFORE_CALL_1205)))) (<= 0 v_main_~i~0_BEFORE_CALL_1205) (< v_main_~i~0_BEFORE_CALL_1205 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= v_main_~i~0_BEFORE_CALL_1205 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_803|) (* 4 v_main_~i~0_BEFORE_CALL_1205))) (= |__VERIFIER_assert_#in~cond| 1) (<= 0 v_main_~i~0_BEFORE_CALL_1205) (< v_main_~i~0_BEFORE_CALL_1205 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:44:21,280 INFO L193 IcfgInterpreter]: Reachable states at location L12-2 satisfy 76#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (<= 0 main_~i~0) (= 0 |#NULL.base|) (<= 0 |#NULL.base|) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (= |#valid| (store |old(#valid)| |main_~#a~0.base| 1)) (<= 0 (+ ~N~0 2147483648)) (= main_~k~0 0) (<= main_~k~0 0) (= |main_~#a~0.offset| 0) (<= ~N~0 2147483647) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= |main_~#a~0.offset| 0) (<= main_~i~0 0) (< 0 ~N~0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (= (store |old(#length)| |main_~#a~0.base| (* 4 ~N~0)) |#length|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0)) [2019-10-07 00:44:23,679 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 00:44:23,679 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 49, 48, 12] total 86 [2019-10-07 00:44:23,680 INFO L442 AbstractCegarLoop]: Interpolant automaton has 86 states [2019-10-07 00:44:23,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2019-10-07 00:44:23,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1292, Invalid=6018, Unknown=0, NotChecked=0, Total=7310 [2019-10-07 00:44:23,681 INFO L87 Difference]: Start difference. First operand 109 states and 131 transitions. Second operand 86 states. [2019-10-07 00:44:34,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:44:34,775 INFO L93 Difference]: Finished difference Result 198 states and 242 transitions. [2019-10-07 00:44:34,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2019-10-07 00:44:34,776 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 188 [2019-10-07 00:44:34,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:44:34,778 INFO L225 Difference]: With dead ends: 198 [2019-10-07 00:44:34,778 INFO L226 Difference]: Without dead ends: 114 [2019-10-07 00:44:34,782 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 755 GetRequests, 460 SyntacticMatches, 67 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22085 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=8494, Invalid=44176, Unknown=0, NotChecked=0, Total=52670 [2019-10-07 00:44:34,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2019-10-07 00:44:34,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 110. [2019-10-07 00:44:34,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2019-10-07 00:44:34,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 132 transitions. [2019-10-07 00:44:34,812 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 132 transitions. Word has length 188 [2019-10-07 00:44:34,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:44:34,812 INFO L462 AbstractCegarLoop]: Abstraction has 110 states and 132 transitions. [2019-10-07 00:44:34,812 INFO L463 AbstractCegarLoop]: Interpolant automaton has 86 states. [2019-10-07 00:44:34,812 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 132 transitions. [2019-10-07 00:44:34,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-10-07 00:44:34,813 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:44:34,813 INFO L385 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:44:35,014 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:44:35,014 INFO L410 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:44:35,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:44:35,015 INFO L82 PathProgramCache]: Analyzing trace with hash 426520185, now seen corresponding path program 39 times [2019-10-07 00:44:35,015 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:44:35,015 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:44:35,015 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:44:35,016 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:44:35,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:44:35,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:44:36,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 44 proven. 1013 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2019-10-07 00:44:36,594 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:44:36,594 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:44:36,594 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 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:44:37,259 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-07 00:44:37,259 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-07 00:44:37,262 INFO L256 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 103 conjunts are in the unsatisfiable core [2019-10-07 00:44:37,264 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:44:44,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 0 proven. 1057 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2019-10-07 00:44:44,012 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:44:44,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 44 proven. 1013 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2019-10-07 00:44:44,215 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:44:44,216 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-07 00:44:44,216 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:44:44,217 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:44:44,217 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:44:44,217 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:44:44,254 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 25 for LOIs [2019-10-07 00:44:44,493 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2019-10-07 00:44:44,499 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-10-07 00:44:44,503 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 00:44:44,503 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 00:44:44,503 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 175#(and (exists ((v_main_~i~0_BEFORE_CALL_1259 Int) (|v_main_~#a~0.base_BEFORE_CALL_856| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1259) (<= 0 |#NULL.base|) (= v_main_~i~0_BEFORE_CALL_1259 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_856|) (* 4 v_main_~i~0_BEFORE_CALL_1259))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_1259 ~N~0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1259) (<= 0 |#NULL.base|) (not (= v_main_~i~0_BEFORE_CALL_1259 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_856|) (* 4 v_main_~i~0_BEFORE_CALL_1259)))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_1259 ~N~0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:44:44,503 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 190#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond) (exists ((v_main_~i~0_BEFORE_CALL_1259 Int) (|v_main_~#a~0.base_BEFORE_CALL_856| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1259) (<= 0 |#NULL.base|) (= v_main_~i~0_BEFORE_CALL_1259 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_856|) (* 4 v_main_~i~0_BEFORE_CALL_1259))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_1259 ~N~0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1259) (<= 0 |#NULL.base|) (not (= v_main_~i~0_BEFORE_CALL_1259 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_856|) (* 4 v_main_~i~0_BEFORE_CALL_1259)))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_1259 ~N~0)))) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:44:44,503 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 199#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 00:44:44,504 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertEXIT satisfy 185#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((v_main_~i~0_BEFORE_CALL_1259 Int) (|v_main_~#a~0.base_BEFORE_CALL_856| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1259) (<= 0 |#NULL.base|) (= v_main_~i~0_BEFORE_CALL_1259 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_856|) (* 4 v_main_~i~0_BEFORE_CALL_1259))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_1259 ~N~0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1259) (<= 0 |#NULL.base|) (not (= v_main_~i~0_BEFORE_CALL_1259 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_856|) (* 4 v_main_~i~0_BEFORE_CALL_1259)))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_1259 ~N~0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:44:44,504 INFO L193 IcfgInterpreter]: Reachable states at location L18-2 satisfy 148#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:44:44,504 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:44:44,504 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 |old(~N~0)|) (<= 0 ~N~0) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:44:44,504 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 204#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:44:44,505 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 00:44:44,505 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 195#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond) (exists ((v_main_~i~0_BEFORE_CALL_1259 Int) (|v_main_~#a~0.base_BEFORE_CALL_856| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1259) (<= 0 |#NULL.base|) (= v_main_~i~0_BEFORE_CALL_1259 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_856|) (* 4 v_main_~i~0_BEFORE_CALL_1259))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_1259 ~N~0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1259) (<= 0 |#NULL.base|) (not (= v_main_~i~0_BEFORE_CALL_1259 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_856|) (* 4 v_main_~i~0_BEFORE_CALL_1259)))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_1259 ~N~0)))) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:44:44,505 INFO L193 IcfgInterpreter]: Reachable states at location L7 satisfy 38#(and (= 0 |#NULL.base|) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 |old(~N~0)|) (<= 0 (+ ~N~0 2147483648)) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:44:44,505 INFO L193 IcfgInterpreter]: Reachable states at location L19-1 satisfy 166#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= |main_#t~mem1| 2147483647) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (= main_~i~0 |main_#t~mem1|) (<= 0 |main_#t~mem1|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:44:44,505 INFO L193 IcfgInterpreter]: Reachable states at location L19 satisfy 153#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:44:44,506 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 170#(exists ((v_main_~i~0_BEFORE_CALL_1259 Int) (|v_main_~#a~0.base_BEFORE_CALL_856| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1259) (<= 0 |#NULL.base|) (= v_main_~i~0_BEFORE_CALL_1259 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_856|) (* 4 v_main_~i~0_BEFORE_CALL_1259))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_1259 ~N~0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1259) (<= 0 |#NULL.base|) (not (= v_main_~i~0_BEFORE_CALL_1259 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_856|) (* 4 v_main_~i~0_BEFORE_CALL_1259)))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_1259 ~N~0)))) [2019-10-07 00:44:44,506 INFO L193 IcfgInterpreter]: Reachable states at location L2-3 satisfy 180#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((v_main_~i~0_BEFORE_CALL_1259 Int) (|v_main_~#a~0.base_BEFORE_CALL_856| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1259) (<= 0 |#NULL.base|) (= v_main_~i~0_BEFORE_CALL_1259 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_856|) (* 4 v_main_~i~0_BEFORE_CALL_1259))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_1259 ~N~0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1259) (<= 0 |#NULL.base|) (not (= v_main_~i~0_BEFORE_CALL_1259 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_856|) (* 4 v_main_~i~0_BEFORE_CALL_1259)))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (< v_main_~i~0_BEFORE_CALL_1259 ~N~0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:44:44,506 INFO L193 IcfgInterpreter]: Reachable states at location L12-2 satisfy 76#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (<= 0 main_~i~0) (= 0 |#NULL.base|) (<= 0 |#NULL.base|) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (= |#valid| (store |old(#valid)| |main_~#a~0.base| 1)) (<= 0 (+ ~N~0 2147483648)) (= main_~k~0 0) (<= main_~k~0 0) (= |main_~#a~0.offset| 0) (<= ~N~0 2147483647) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= |main_~#a~0.offset| 0) (<= main_~i~0 0) (< 0 ~N~0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (= (store |old(#length)| |main_~#a~0.base| (* 4 ~N~0)) |#length|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0)) [2019-10-07 00:44:48,999 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 00:44:49,000 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 53, 52, 12] total 116 [2019-10-07 00:44:49,001 INFO L442 AbstractCegarLoop]: Interpolant automaton has 116 states [2019-10-07 00:44:49,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2019-10-07 00:44:49,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=370, Invalid=12970, Unknown=0, NotChecked=0, Total=13340 [2019-10-07 00:44:49,002 INFO L87 Difference]: Start difference. First operand 110 states and 132 transitions. Second operand 116 states. [2019-10-07 00:45:06,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:45:06,457 INFO L93 Difference]: Finished difference Result 118 states and 141 transitions. [2019-10-07 00:45:06,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2019-10-07 00:45:06,458 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 189 [2019-10-07 00:45:06,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:45:06,459 INFO L225 Difference]: With dead ends: 118 [2019-10-07 00:45:06,460 INFO L226 Difference]: Without dead ends: 116 [2019-10-07 00:45:06,462 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 719 GetRequests, 437 SyntacticMatches, 68 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15318 ImplicationChecksByTransitivity, 21.5s TimeCoverageRelationStatistics Valid=1425, Invalid=45015, Unknown=0, NotChecked=0, Total=46440 [2019-10-07 00:45:06,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2019-10-07 00:45:06,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 113. [2019-10-07 00:45:06,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2019-10-07 00:45:06,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 136 transitions. [2019-10-07 00:45:06,506 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 136 transitions. Word has length 189 [2019-10-07 00:45:06,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:45:06,507 INFO L462 AbstractCegarLoop]: Abstraction has 113 states and 136 transitions. [2019-10-07 00:45:06,507 INFO L463 AbstractCegarLoop]: Interpolant automaton has 116 states. [2019-10-07 00:45:06,507 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 136 transitions. [2019-10-07 00:45:06,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-10-07 00:45:06,507 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:45:06,508 INFO L385 BasicCegarLoop]: trace histogram [24, 24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:45:06,708 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:45:06,709 INFO L410 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:45:06,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:45:06,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1708400882, now seen corresponding path program 40 times [2019-10-07 00:45:06,710 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:45:06,710 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:45:06,710 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:45:06,710 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:45:06,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:45:06,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:45:07,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2139 backedges. 784 proven. 343 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2019-10-07 00:45:07,997 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:45:07,998 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:45:07,998 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 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:45:08,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:45:08,811 INFO L256 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 50 conjunts are in the unsatisfiable core [2019-10-07 00:45:08,814 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:45:09,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2139 backedges. 851 proven. 276 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2019-10-07 00:45:09,859 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:45:10,602 INFO L134 CoverageAnalysis]: Checked inductivity of 2139 backedges. 851 proven. 276 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2019-10-07 00:45:10,602 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:45:10,603 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-07 00:45:10,603 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:45:10,604 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:45:10,604 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:45:10,604 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:45:10,618 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-07 00:45:10,826 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2019-10-07 00:45:10,833 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-10-07 00:45:10,836 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 00:45:10,837 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 00:45:10,837 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 175#(and (exists ((v_main_~i~0_BEFORE_CALL_1314 Int) (|v_main_~#a~0.base_BEFORE_CALL_865| Int)) (or (and (= |#NULL.base| 0) (= v_main_~i~0_BEFORE_CALL_1314 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_865|) (* 4 v_main_~i~0_BEFORE_CALL_1314))) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1314) (< v_main_~i~0_BEFORE_CALL_1314 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (not (= v_main_~i~0_BEFORE_CALL_1314 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_865|) (* 4 v_main_~i~0_BEFORE_CALL_1314)))) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1314) (< v_main_~i~0_BEFORE_CALL_1314 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:45:10,837 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 190#(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_main_~i~0_BEFORE_CALL_1314 Int) (|v_main_~#a~0.base_BEFORE_CALL_865| Int)) (or (and (= |#NULL.base| 0) (= v_main_~i~0_BEFORE_CALL_1314 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_865|) (* 4 v_main_~i~0_BEFORE_CALL_1314))) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1314) (< v_main_~i~0_BEFORE_CALL_1314 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (not (= v_main_~i~0_BEFORE_CALL_1314 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_865|) (* 4 v_main_~i~0_BEFORE_CALL_1314)))) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1314) (< v_main_~i~0_BEFORE_CALL_1314 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:45:10,837 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 199#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 00:45:10,837 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertEXIT satisfy 185#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((v_main_~i~0_BEFORE_CALL_1314 Int) (|v_main_~#a~0.base_BEFORE_CALL_865| Int)) (or (and (= |#NULL.base| 0) (= v_main_~i~0_BEFORE_CALL_1314 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_865|) (* 4 v_main_~i~0_BEFORE_CALL_1314))) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1314) (< v_main_~i~0_BEFORE_CALL_1314 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (not (= v_main_~i~0_BEFORE_CALL_1314 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_865|) (* 4 v_main_~i~0_BEFORE_CALL_1314)))) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1314) (< v_main_~i~0_BEFORE_CALL_1314 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:45:10,838 INFO L193 IcfgInterpreter]: Reachable states at location L18-2 satisfy 148#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:45:10,838 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:45:10,838 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (<= 0 ~N~0) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:45:10,838 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 204#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:45:10,838 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 00:45:10,838 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 195#(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_main_~i~0_BEFORE_CALL_1314 Int) (|v_main_~#a~0.base_BEFORE_CALL_865| Int)) (or (and (= |#NULL.base| 0) (= v_main_~i~0_BEFORE_CALL_1314 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_865|) (* 4 v_main_~i~0_BEFORE_CALL_1314))) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1314) (< v_main_~i~0_BEFORE_CALL_1314 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (not (= v_main_~i~0_BEFORE_CALL_1314 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_865|) (* 4 v_main_~i~0_BEFORE_CALL_1314)))) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1314) (< v_main_~i~0_BEFORE_CALL_1314 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:45:10,839 INFO L193 IcfgInterpreter]: Reachable states at location L7 satisfy 38#(and (= 0 |#NULL.base|) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (<= 0 (+ ~N~0 2147483648)) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:45:10,839 INFO L193 IcfgInterpreter]: Reachable states at location L19-1 satisfy 166#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= |main_#t~mem1| 2147483647) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (= main_~i~0 |main_#t~mem1|) (<= 0 |main_#t~mem1|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:45:10,839 INFO L193 IcfgInterpreter]: Reachable states at location L19 satisfy 153#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:45:10,839 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 170#(exists ((v_main_~i~0_BEFORE_CALL_1314 Int) (|v_main_~#a~0.base_BEFORE_CALL_865| Int)) (or (and (= |#NULL.base| 0) (= v_main_~i~0_BEFORE_CALL_1314 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_865|) (* 4 v_main_~i~0_BEFORE_CALL_1314))) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1314) (< v_main_~i~0_BEFORE_CALL_1314 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (not (= v_main_~i~0_BEFORE_CALL_1314 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_865|) (* 4 v_main_~i~0_BEFORE_CALL_1314)))) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1314) (< v_main_~i~0_BEFORE_CALL_1314 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-07 00:45:10,839 INFO L193 IcfgInterpreter]: Reachable states at location L2-3 satisfy 180#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((v_main_~i~0_BEFORE_CALL_1314 Int) (|v_main_~#a~0.base_BEFORE_CALL_865| Int)) (or (and (= |#NULL.base| 0) (= v_main_~i~0_BEFORE_CALL_1314 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_865|) (* 4 v_main_~i~0_BEFORE_CALL_1314))) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1314) (< v_main_~i~0_BEFORE_CALL_1314 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (not (= v_main_~i~0_BEFORE_CALL_1314 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_865|) (* 4 v_main_~i~0_BEFORE_CALL_1314)))) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1314) (< v_main_~i~0_BEFORE_CALL_1314 ~N~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:45:10,839 INFO L193 IcfgInterpreter]: Reachable states at location L12-2 satisfy 76#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (<= 0 main_~i~0) (= 0 |#NULL.base|) (<= 0 |#NULL.base|) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (= |#valid| (store |old(#valid)| |main_~#a~0.base| 1)) (<= 0 (+ ~N~0 2147483648)) (= main_~k~0 0) (<= main_~k~0 0) (= |main_~#a~0.offset| 0) (<= ~N~0 2147483647) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= |main_~#a~0.offset| 0) (<= main_~i~0 0) (< 0 ~N~0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (= (store |old(#length)| |main_~#a~0.base| (* 4 ~N~0)) |#length|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0)) [2019-10-07 00:45:13,316 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 00:45:13,316 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 51, 50, 12] total 89 [2019-10-07 00:45:13,320 INFO L442 AbstractCegarLoop]: Interpolant automaton has 89 states [2019-10-07 00:45:13,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2019-10-07 00:45:13,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1394, Invalid=6438, Unknown=0, NotChecked=0, Total=7832 [2019-10-07 00:45:13,321 INFO L87 Difference]: Start difference. First operand 113 states and 136 transitions. Second operand 89 states. [2019-10-07 00:45:25,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:45:25,411 INFO L93 Difference]: Finished difference Result 205 states and 251 transitions. [2019-10-07 00:45:25,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2019-10-07 00:45:25,412 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 196 [2019-10-07 00:45:25,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:45:25,414 INFO L225 Difference]: With dead ends: 205 [2019-10-07 00:45:25,414 INFO L226 Difference]: Without dead ends: 118 [2019-10-07 00:45:25,418 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 787 GetRequests, 480 SyntacticMatches, 70 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23907 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=9195, Invalid=47687, Unknown=0, NotChecked=0, Total=56882 [2019-10-07 00:45:25,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2019-10-07 00:45:25,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 114. [2019-10-07 00:45:25,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2019-10-07 00:45:25,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 137 transitions. [2019-10-07 00:45:25,457 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 137 transitions. Word has length 196 [2019-10-07 00:45:25,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:45:25,458 INFO L462 AbstractCegarLoop]: Abstraction has 114 states and 137 transitions. [2019-10-07 00:45:25,458 INFO L463 AbstractCegarLoop]: Interpolant automaton has 89 states. [2019-10-07 00:45:25,458 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 137 transitions. [2019-10-07 00:45:25,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2019-10-07 00:45:25,459 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:45:25,459 INFO L385 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:45:25,659 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:45:25,660 INFO L410 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:45:25,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:45:25,660 INFO L82 PathProgramCache]: Analyzing trace with hash 288243981, now seen corresponding path program 41 times [2019-10-07 00:45:25,661 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:45:25,661 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:45:25,661 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:45:25,661 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:45:25,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:45:25,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:45:27,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 46 proven. 1105 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2019-10-07 00:45:27,631 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:45:27,631 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:45:27,631 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 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:45:30,818 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2019-10-07 00:45:30,818 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-07 00:45:30,826 INFO L256 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 117 conjunts are in the unsatisfiable core [2019-10-07 00:45:30,829 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:45:38,759 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 782 proven. 369 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2019-10-07 00:45:38,759 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:45:44,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 319 proven. 832 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2019-10-07 00:45:44,687 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:45:44,688 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-07 00:45:44,688 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:45:44,688 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:45:44,688 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:45:44,688 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:45:44,702 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-07 00:45:44,920 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2019-10-07 00:45:44,928 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-10-07 00:45:44,931 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 00:45:44,931 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 00:45:44,932 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 175#(and (exists ((|v_main_~#a~0.base_BEFORE_CALL_920| Int) (v_main_~i~0_BEFORE_CALL_1370 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_1370) (< v_main_~i~0_BEFORE_CALL_1370 ~N~0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_920|) (* 4 v_main_~i~0_BEFORE_CALL_1370)) v_main_~i~0_BEFORE_CALL_1370)) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_920|) (* 4 v_main_~i~0_BEFORE_CALL_1370)) v_main_~i~0_BEFORE_CALL_1370) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_1370) (< v_main_~i~0_BEFORE_CALL_1370 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:45:44,932 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 190#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_main_~#a~0.base_BEFORE_CALL_920| Int) (v_main_~i~0_BEFORE_CALL_1370 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_1370) (< v_main_~i~0_BEFORE_CALL_1370 ~N~0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_920|) (* 4 v_main_~i~0_BEFORE_CALL_1370)) v_main_~i~0_BEFORE_CALL_1370)) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_920|) (* 4 v_main_~i~0_BEFORE_CALL_1370)) v_main_~i~0_BEFORE_CALL_1370) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_1370) (< v_main_~i~0_BEFORE_CALL_1370 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:45:44,932 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 199#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 00:45:44,932 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertEXIT satisfy 185#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((|v_main_~#a~0.base_BEFORE_CALL_920| Int) (v_main_~i~0_BEFORE_CALL_1370 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_1370) (< v_main_~i~0_BEFORE_CALL_1370 ~N~0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_920|) (* 4 v_main_~i~0_BEFORE_CALL_1370)) v_main_~i~0_BEFORE_CALL_1370)) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_920|) (* 4 v_main_~i~0_BEFORE_CALL_1370)) v_main_~i~0_BEFORE_CALL_1370) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_1370) (< v_main_~i~0_BEFORE_CALL_1370 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:45:44,932 INFO L193 IcfgInterpreter]: Reachable states at location L18-2 satisfy 148#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:45:44,933 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:45:44,933 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 |old(~N~0)|) (<= 0 ~N~0) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:45:44,933 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 204#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:45:44,933 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 00:45:44,933 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 195#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_main_~#a~0.base_BEFORE_CALL_920| Int) (v_main_~i~0_BEFORE_CALL_1370 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_1370) (< v_main_~i~0_BEFORE_CALL_1370 ~N~0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_920|) (* 4 v_main_~i~0_BEFORE_CALL_1370)) v_main_~i~0_BEFORE_CALL_1370)) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_920|) (* 4 v_main_~i~0_BEFORE_CALL_1370)) v_main_~i~0_BEFORE_CALL_1370) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_1370) (< v_main_~i~0_BEFORE_CALL_1370 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:45:44,933 INFO L193 IcfgInterpreter]: Reachable states at location L7 satisfy 38#(and (= 0 |#NULL.base|) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 |old(~N~0)|) (<= 0 (+ ~N~0 2147483648)) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:45:44,934 INFO L193 IcfgInterpreter]: Reachable states at location L19-1 satisfy 166#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= |main_#t~mem1| 2147483647) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (= main_~i~0 |main_#t~mem1|) (<= 0 |main_#t~mem1|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:45:44,934 INFO L193 IcfgInterpreter]: Reachable states at location L19 satisfy 153#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:45:44,934 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 170#(exists ((|v_main_~#a~0.base_BEFORE_CALL_920| Int) (v_main_~i~0_BEFORE_CALL_1370 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_1370) (< v_main_~i~0_BEFORE_CALL_1370 ~N~0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_920|) (* 4 v_main_~i~0_BEFORE_CALL_1370)) v_main_~i~0_BEFORE_CALL_1370)) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_920|) (* 4 v_main_~i~0_BEFORE_CALL_1370)) v_main_~i~0_BEFORE_CALL_1370) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_1370) (< v_main_~i~0_BEFORE_CALL_1370 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-07 00:45:44,934 INFO L193 IcfgInterpreter]: Reachable states at location L2-3 satisfy 180#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((|v_main_~#a~0.base_BEFORE_CALL_920| Int) (v_main_~i~0_BEFORE_CALL_1370 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_1370) (< v_main_~i~0_BEFORE_CALL_1370 ~N~0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_920|) (* 4 v_main_~i~0_BEFORE_CALL_1370)) v_main_~i~0_BEFORE_CALL_1370)) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_920|) (* 4 v_main_~i~0_BEFORE_CALL_1370)) v_main_~i~0_BEFORE_CALL_1370) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 v_main_~i~0_BEFORE_CALL_1370) (< v_main_~i~0_BEFORE_CALL_1370 ~N~0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:45:44,935 INFO L193 IcfgInterpreter]: Reachable states at location L12-2 satisfy 76#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (<= 0 main_~i~0) (= 0 |#NULL.base|) (<= 0 |#NULL.base|) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (<= 0 |#NULL.offset|) (= |#valid| (store |old(#valid)| |main_~#a~0.base| 1)) (<= 0 (+ ~N~0 2147483648)) (= main_~k~0 0) (<= main_~k~0 0) (= |main_~#a~0.offset| 0) (<= ~N~0 2147483647) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= |main_~#a~0.offset| 0) (<= main_~i~0 0) (< 0 ~N~0) (= 0 (select |old(#valid)| 0)) (<= |#NULL.offset| 0) (= 0 |old(~N~0)|) (<= 0 ~N~0) (= (store |old(#length)| |main_~#a~0.base| (* 4 ~N~0)) |#length|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0)) [2019-10-07 00:45:50,416 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 00:45:50,417 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 55, 54, 12] total 168 [2019-10-07 00:45:50,418 INFO L442 AbstractCegarLoop]: Interpolant automaton has 168 states [2019-10-07 00:45:50,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2019-10-07 00:45:50,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1757, Invalid=26299, Unknown=0, NotChecked=0, Total=28056 [2019-10-07 00:45:50,421 INFO L87 Difference]: Start difference. First operand 114 states and 137 transitions. Second operand 168 states. [2019-10-07 00:46:00,476 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-10-07 00:46:01,118 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2019-10-07 00:46:05,321 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2019-10-07 00:46:30,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:46:30,107 INFO L93 Difference]: Finished difference Result 205 states and 253 transitions. [2019-10-07 00:46:30,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2019-10-07 00:46:30,107 INFO L78 Accepts]: Start accepts. Automaton has 168 states. Word has length 197 [2019-10-07 00:46:30,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:46:30,109 INFO L225 Difference]: With dead ends: 205 [2019-10-07 00:46:30,109 INFO L226 Difference]: Without dead ends: 120 [2019-10-07 00:46:30,113 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 826 GetRequests, 410 SyntacticMatches, 69 SemanticMatches, 347 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39793 ImplicationChecksByTransitivity, 48.3s TimeCoverageRelationStatistics Valid=7263, Invalid=114189, Unknown=0, NotChecked=0, Total=121452 [2019-10-07 00:46:30,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2019-10-07 00:46:30,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 118. [2019-10-07 00:46:30,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2019-10-07 00:46:30,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 142 transitions. [2019-10-07 00:46:30,165 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 142 transitions. Word has length 197 [2019-10-07 00:46:30,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:46:30,165 INFO L462 AbstractCegarLoop]: Abstraction has 118 states and 142 transitions. [2019-10-07 00:46:30,165 INFO L463 AbstractCegarLoop]: Interpolant automaton has 168 states. [2019-10-07 00:46:30,165 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 142 transitions. [2019-10-07 00:46:30,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2019-10-07 00:46:30,167 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:46:30,167 INFO L385 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:46:30,376 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:46:30,377 INFO L410 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:46:30,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:46:30,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1436128505, now seen corresponding path program 42 times [2019-10-07 00:46:30,377 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:46:30,377 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:46:30,378 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:46:30,378 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:46:30,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:46:30,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:46:33,077 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 48 proven. 1201 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2019-10-07 00:46:33,078 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:46:33,078 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:46:33,078 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 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:46:33,828 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-07 00:46:33,828 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-07 00:46:33,832 INFO L256 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 111 conjunts are in the unsatisfiable core [2019-10-07 00:46:33,835 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:46:39,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 0 proven. 1249 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2019-10-07 00:46:39,618 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:46:44,383 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 48 proven. 1201 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2019-10-07 00:46:44,383 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:46:44,384 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-07 00:46:44,384 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:46:44,384 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:46:44,384 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:46:44,384 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:46:44,399 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 25 for LOIs [2019-10-07 00:46:44,594 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2019-10-07 00:46:44,601 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-10-07 00:46:44,603 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 00:46:44,603 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 00:46:44,604 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 175#(and (exists ((v_main_~i~0_BEFORE_CALL_1428 Int) (|v_main_~#a~0.base_BEFORE_CALL_977| Int)) (or (and (= |#NULL.base| 0) (= v_main_~i~0_BEFORE_CALL_1428 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_977|) (* 4 v_main_~i~0_BEFORE_CALL_1428))) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_1428 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_1428) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (not (= v_main_~i~0_BEFORE_CALL_1428 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_977|) (* 4 v_main_~i~0_BEFORE_CALL_1428)))) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_1428 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_1428) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:46:44,604 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 190#(and (exists ((v_main_~i~0_BEFORE_CALL_1428 Int) (|v_main_~#a~0.base_BEFORE_CALL_977| Int)) (or (and (= |#NULL.base| 0) (= v_main_~i~0_BEFORE_CALL_1428 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_977|) (* 4 v_main_~i~0_BEFORE_CALL_1428))) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_1428 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_1428) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (not (= v_main_~i~0_BEFORE_CALL_1428 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_977|) (* 4 v_main_~i~0_BEFORE_CALL_1428)))) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_1428 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_1428) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= __VERIFIER_assert_~cond 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)) [2019-10-07 00:46:44,604 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 199#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 00:46:44,604 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertEXIT satisfy 185#(and (exists ((v_main_~i~0_BEFORE_CALL_1428 Int) (|v_main_~#a~0.base_BEFORE_CALL_977| Int)) (or (and (= |#NULL.base| 0) (= v_main_~i~0_BEFORE_CALL_1428 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_977|) (* 4 v_main_~i~0_BEFORE_CALL_1428))) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_1428 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_1428) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (not (= v_main_~i~0_BEFORE_CALL_1428 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_977|) (* 4 v_main_~i~0_BEFORE_CALL_1428)))) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_1428 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_1428) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (not (= 0 __VERIFIER_assert_~cond)) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:46:44,604 INFO L193 IcfgInterpreter]: Reachable states at location L18-2 satisfy 148#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:46:44,604 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:46:44,604 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 |old(~N~0)|) (<= 0 ~N~0) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:46:44,604 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 204#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:46:44,605 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 00:46:44,605 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 195#(and (exists ((v_main_~i~0_BEFORE_CALL_1428 Int) (|v_main_~#a~0.base_BEFORE_CALL_977| Int)) (or (and (= |#NULL.base| 0) (= v_main_~i~0_BEFORE_CALL_1428 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_977|) (* 4 v_main_~i~0_BEFORE_CALL_1428))) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_1428 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_1428) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (not (= v_main_~i~0_BEFORE_CALL_1428 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_977|) (* 4 v_main_~i~0_BEFORE_CALL_1428)))) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_1428 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_1428) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= __VERIFIER_assert_~cond 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)) [2019-10-07 00:46:44,605 INFO L193 IcfgInterpreter]: Reachable states at location L7 satisfy 38#(and (= 0 |#NULL.base|) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 |old(~N~0)|) (<= 0 (+ ~N~0 2147483648)) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:46:44,605 INFO L193 IcfgInterpreter]: Reachable states at location L19-1 satisfy 166#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= |main_#t~mem1| 2147483647) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (= main_~i~0 |main_#t~mem1|) (<= 0 |main_#t~mem1|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:46:44,605 INFO L193 IcfgInterpreter]: Reachable states at location L19 satisfy 153#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:46:44,605 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 170#(exists ((v_main_~i~0_BEFORE_CALL_1428 Int) (|v_main_~#a~0.base_BEFORE_CALL_977| Int)) (or (and (= |#NULL.base| 0) (= v_main_~i~0_BEFORE_CALL_1428 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_977|) (* 4 v_main_~i~0_BEFORE_CALL_1428))) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_1428 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_1428) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (not (= v_main_~i~0_BEFORE_CALL_1428 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_977|) (* 4 v_main_~i~0_BEFORE_CALL_1428)))) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_1428 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_1428) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-07 00:46:44,605 INFO L193 IcfgInterpreter]: Reachable states at location L2-3 satisfy 180#(and (exists ((v_main_~i~0_BEFORE_CALL_1428 Int) (|v_main_~#a~0.base_BEFORE_CALL_977| Int)) (or (and (= |#NULL.base| 0) (= v_main_~i~0_BEFORE_CALL_1428 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_977|) (* 4 v_main_~i~0_BEFORE_CALL_1428))) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_1428 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_1428) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (not (= v_main_~i~0_BEFORE_CALL_1428 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_977|) (* 4 v_main_~i~0_BEFORE_CALL_1428)))) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_1428 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_1428) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (not (= 0 __VERIFIER_assert_~cond)) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:46:44,606 INFO L193 IcfgInterpreter]: Reachable states at location L12-2 satisfy 76#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (<= 0 main_~i~0) (= 0 |#NULL.base|) (<= 0 |#NULL.base|) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (= |#valid| (store |old(#valid)| |main_~#a~0.base| 1)) (<= 0 (+ ~N~0 2147483648)) (= main_~k~0 0) (<= main_~k~0 0) (= |main_~#a~0.offset| 0) (<= ~N~0 2147483647) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= |main_~#a~0.offset| 0) (<= main_~i~0 0) (< 0 ~N~0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (= (store |old(#length)| |main_~#a~0.base| (* 4 ~N~0)) |#length|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0)) [2019-10-07 00:46:47,139 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 30 [2019-10-07 00:46:50,359 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 00:46:50,360 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 57, 56, 12] total 147 [2019-10-07 00:46:50,361 INFO L442 AbstractCegarLoop]: Interpolant automaton has 147 states [2019-10-07 00:46:50,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2019-10-07 00:46:50,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=488, Invalid=20974, Unknown=0, NotChecked=0, Total=21462 [2019-10-07 00:46:50,362 INFO L87 Difference]: Start difference. First operand 118 states and 142 transitions. Second operand 147 states. [2019-10-07 00:47:13,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:47:13,292 INFO L93 Difference]: Finished difference Result 126 states and 151 transitions. [2019-10-07 00:47:13,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2019-10-07 00:47:13,292 INFO L78 Accepts]: Start accepts. Automaton has 147 states. Word has length 205 [2019-10-07 00:47:13,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:47:13,294 INFO L225 Difference]: With dead ends: 126 [2019-10-07 00:47:13,294 INFO L226 Difference]: Without dead ends: 124 [2019-10-07 00:47:13,297 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 779 GetRequests, 443 SyntacticMatches, 83 SemanticMatches, 253 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16215 ImplicationChecksByTransitivity, 32.2s TimeCoverageRelationStatistics Valid=1722, Invalid=63048, Unknown=0, NotChecked=0, Total=64770 [2019-10-07 00:47:13,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2019-10-07 00:47:13,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 121. [2019-10-07 00:47:13,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2019-10-07 00:47:13,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 146 transitions. [2019-10-07 00:47:13,348 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 146 transitions. Word has length 205 [2019-10-07 00:47:13,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:47:13,349 INFO L462 AbstractCegarLoop]: Abstraction has 121 states and 146 transitions. [2019-10-07 00:47:13,349 INFO L463 AbstractCegarLoop]: Interpolant automaton has 147 states. [2019-10-07 00:47:13,349 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 146 transitions. [2019-10-07 00:47:13,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2019-10-07 00:47:13,350 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:47:13,350 INFO L385 BasicCegarLoop]: trace histogram [26, 26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:47:13,556 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:47:13,557 INFO L410 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:47:13,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:47:13,557 INFO L82 PathProgramCache]: Analyzing trace with hash 897477234, now seen corresponding path program 43 times [2019-10-07 00:47:13,557 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:47:13,558 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:47:13,558 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:47:13,558 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:47:13,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:47:13,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:47:14,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 927 proven. 398 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2019-10-07 00:47:14,690 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:47:14,690 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:47:14,690 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 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:47:15,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:47:15,454 INFO L256 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 54 conjunts are in the unsatisfiable core [2019-10-07 00:47:15,456 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:47:16,612 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 1000 proven. 325 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2019-10-07 00:47:16,612 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:47:17,461 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 1000 proven. 325 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2019-10-07 00:47:17,461 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:47:17,462 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-07 00:47:17,462 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:47:17,462 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:47:17,462 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:47:17,462 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:47:17,475 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 25 for LOIs [2019-10-07 00:47:17,724 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2019-10-07 00:47:17,731 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-10-07 00:47:17,734 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 00:47:17,734 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 00:47:17,734 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 175#(and (exists ((v_main_~i~0_BEFORE_CALL_1487 Int) (|v_main_~#a~0.base_BEFORE_CALL_986| Int)) (or (and (= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_1487 ~N~0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (not (= v_main_~i~0_BEFORE_CALL_1487 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_986|) (* 4 v_main_~i~0_BEFORE_CALL_1487)))) (<= 0 v_main_~i~0_BEFORE_CALL_1487) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_1487 ~N~0) (= v_main_~i~0_BEFORE_CALL_1487 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_986|) (* 4 v_main_~i~0_BEFORE_CALL_1487))) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1487) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:47:17,735 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 190#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_main_~i~0_BEFORE_CALL_1487 Int) (|v_main_~#a~0.base_BEFORE_CALL_986| Int)) (or (and (= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_1487 ~N~0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (not (= v_main_~i~0_BEFORE_CALL_1487 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_986|) (* 4 v_main_~i~0_BEFORE_CALL_1487)))) (<= 0 v_main_~i~0_BEFORE_CALL_1487) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_1487 ~N~0) (= v_main_~i~0_BEFORE_CALL_1487 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_986|) (* 4 v_main_~i~0_BEFORE_CALL_1487))) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1487) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:47:17,735 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 199#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 00:47:17,735 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertEXIT satisfy 185#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((v_main_~i~0_BEFORE_CALL_1487 Int) (|v_main_~#a~0.base_BEFORE_CALL_986| Int)) (or (and (= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_1487 ~N~0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (not (= v_main_~i~0_BEFORE_CALL_1487 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_986|) (* 4 v_main_~i~0_BEFORE_CALL_1487)))) (<= 0 v_main_~i~0_BEFORE_CALL_1487) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_1487 ~N~0) (= v_main_~i~0_BEFORE_CALL_1487 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_986|) (* 4 v_main_~i~0_BEFORE_CALL_1487))) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1487) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:47:17,735 INFO L193 IcfgInterpreter]: Reachable states at location L18-2 satisfy 148#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:47:17,735 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:47:17,736 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 |old(~N~0)|) (<= 0 ~N~0) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:47:17,736 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 204#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:47:17,736 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 00:47:17,736 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 195#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_main_~i~0_BEFORE_CALL_1487 Int) (|v_main_~#a~0.base_BEFORE_CALL_986| Int)) (or (and (= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_1487 ~N~0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (not (= v_main_~i~0_BEFORE_CALL_1487 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_986|) (* 4 v_main_~i~0_BEFORE_CALL_1487)))) (<= 0 v_main_~i~0_BEFORE_CALL_1487) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_1487 ~N~0) (= v_main_~i~0_BEFORE_CALL_1487 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_986|) (* 4 v_main_~i~0_BEFORE_CALL_1487))) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1487) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:47:17,736 INFO L193 IcfgInterpreter]: Reachable states at location L7 satisfy 38#(and (= 0 |#NULL.base|) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 |old(~N~0)|) (<= 0 (+ ~N~0 2147483648)) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:47:17,736 INFO L193 IcfgInterpreter]: Reachable states at location L19-1 satisfy 166#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= |main_#t~mem1| 2147483647) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (= main_~i~0 |main_#t~mem1|) (<= 0 |main_#t~mem1|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:47:17,736 INFO L193 IcfgInterpreter]: Reachable states at location L19 satisfy 153#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:47:17,737 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 170#(exists ((v_main_~i~0_BEFORE_CALL_1487 Int) (|v_main_~#a~0.base_BEFORE_CALL_986| Int)) (or (and (= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_1487 ~N~0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (not (= v_main_~i~0_BEFORE_CALL_1487 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_986|) (* 4 v_main_~i~0_BEFORE_CALL_1487)))) (<= 0 v_main_~i~0_BEFORE_CALL_1487) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_1487 ~N~0) (= v_main_~i~0_BEFORE_CALL_1487 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_986|) (* 4 v_main_~i~0_BEFORE_CALL_1487))) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1487) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-07 00:47:17,737 INFO L193 IcfgInterpreter]: Reachable states at location L2-3 satisfy 180#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((v_main_~i~0_BEFORE_CALL_1487 Int) (|v_main_~#a~0.base_BEFORE_CALL_986| Int)) (or (and (= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_1487 ~N~0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (not (= v_main_~i~0_BEFORE_CALL_1487 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_986|) (* 4 v_main_~i~0_BEFORE_CALL_1487)))) (<= 0 v_main_~i~0_BEFORE_CALL_1487) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_1487 ~N~0) (= v_main_~i~0_BEFORE_CALL_1487 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_986|) (* 4 v_main_~i~0_BEFORE_CALL_1487))) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1487) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:47:17,737 INFO L193 IcfgInterpreter]: Reachable states at location L12-2 satisfy 76#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (<= 0 main_~i~0) (= 0 |#NULL.base|) (<= 0 |#NULL.base|) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (= |#valid| (store |old(#valid)| |main_~#a~0.base| 1)) (<= 0 (+ ~N~0 2147483648)) (= main_~k~0 0) (<= main_~k~0 0) (= |main_~#a~0.offset| 0) (<= ~N~0 2147483647) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= |main_~#a~0.offset| 0) (<= main_~i~0 0) (< 0 ~N~0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (= (store |old(#length)| |main_~#a~0.base| (* 4 ~N~0)) |#length|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0)) [2019-10-07 00:47:20,496 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 00:47:20,496 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 55, 54, 12] total 95 [2019-10-07 00:47:20,497 INFO L442 AbstractCegarLoop]: Interpolant automaton has 95 states [2019-10-07 00:47:20,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2019-10-07 00:47:20,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1610, Invalid=7320, Unknown=0, NotChecked=0, Total=8930 [2019-10-07 00:47:20,498 INFO L87 Difference]: Start difference. First operand 121 states and 146 transitions. Second operand 95 states. [2019-10-07 00:47:34,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:47:34,253 INFO L93 Difference]: Finished difference Result 219 states and 269 transitions. [2019-10-07 00:47:34,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2019-10-07 00:47:34,254 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 212 [2019-10-07 00:47:34,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:47:34,256 INFO L225 Difference]: With dead ends: 219 [2019-10-07 00:47:34,256 INFO L226 Difference]: Without dead ends: 126 [2019-10-07 00:47:34,258 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 851 GetRequests, 520 SyntacticMatches, 76 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27767 ImplicationChecksByTransitivity, 16.2s TimeCoverageRelationStatistics Valid=10681, Invalid=55111, Unknown=0, NotChecked=0, Total=65792 [2019-10-07 00:47:34,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2019-10-07 00:47:34,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 122. [2019-10-07 00:47:34,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2019-10-07 00:47:34,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 147 transitions. [2019-10-07 00:47:34,295 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 147 transitions. Word has length 212 [2019-10-07 00:47:34,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:47:34,295 INFO L462 AbstractCegarLoop]: Abstraction has 122 states and 147 transitions. [2019-10-07 00:47:34,295 INFO L463 AbstractCegarLoop]: Interpolant automaton has 95 states. [2019-10-07 00:47:34,295 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 147 transitions. [2019-10-07 00:47:34,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2019-10-07 00:47:34,296 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:47:34,296 INFO L385 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:47:34,497 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:47:34,497 INFO L410 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:47:34,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:47:34,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1434258291, now seen corresponding path program 44 times [2019-10-07 00:47:34,498 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:47:34,498 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:47:34,499 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:47:34,499 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:47:34,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:47:34,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:47:36,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 50 proven. 1301 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2019-10-07 00:47:36,656 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:47:36,656 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:47:36,656 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 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:47:41,384 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 26 check-sat command(s) [2019-10-07 00:47:41,384 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-07 00:47:41,396 INFO L256 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 165 conjunts are in the unsatisfiable core [2019-10-07 00:47:41,399 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:47:49,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 0 proven. 1351 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2019-10-07 00:47:49,984 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:47:50,313 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 50 proven. 1301 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2019-10-07 00:47:50,313 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:47:50,314 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-07 00:47:50,314 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:47:50,314 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:47:50,314 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:47:50,314 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:47:50,329 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-07 00:47:50,578 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2019-10-07 00:47:50,584 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-10-07 00:47:50,588 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 00:47:50,588 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 00:47:50,588 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 175#(and (exists ((|v_main_~#a~0.base_BEFORE_CALL_1045| Int) (v_main_~i~0_BEFORE_CALL_1547 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (< v_main_~i~0_BEFORE_CALL_1547 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (not (= v_main_~i~0_BEFORE_CALL_1547 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_1045|) (* 4 v_main_~i~0_BEFORE_CALL_1547)))) (<= 0 v_main_~i~0_BEFORE_CALL_1547) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (< v_main_~i~0_BEFORE_CALL_1547 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (= v_main_~i~0_BEFORE_CALL_1547 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_1045|) (* 4 v_main_~i~0_BEFORE_CALL_1547))) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1547) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:47:50,588 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 190#(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_main_~#a~0.base_BEFORE_CALL_1045| Int) (v_main_~i~0_BEFORE_CALL_1547 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (< v_main_~i~0_BEFORE_CALL_1547 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (not (= v_main_~i~0_BEFORE_CALL_1547 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_1045|) (* 4 v_main_~i~0_BEFORE_CALL_1547)))) (<= 0 v_main_~i~0_BEFORE_CALL_1547) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (< v_main_~i~0_BEFORE_CALL_1547 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (= v_main_~i~0_BEFORE_CALL_1547 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_1045|) (* 4 v_main_~i~0_BEFORE_CALL_1547))) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1547) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:47:50,588 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 199#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 00:47:50,589 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertEXIT satisfy 185#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((|v_main_~#a~0.base_BEFORE_CALL_1045| Int) (v_main_~i~0_BEFORE_CALL_1547 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (< v_main_~i~0_BEFORE_CALL_1547 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (not (= v_main_~i~0_BEFORE_CALL_1547 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_1045|) (* 4 v_main_~i~0_BEFORE_CALL_1547)))) (<= 0 v_main_~i~0_BEFORE_CALL_1547) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (< v_main_~i~0_BEFORE_CALL_1547 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (= v_main_~i~0_BEFORE_CALL_1547 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_1045|) (* 4 v_main_~i~0_BEFORE_CALL_1547))) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1547) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:47:50,589 INFO L193 IcfgInterpreter]: Reachable states at location L18-2 satisfy 148#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:47:50,589 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:47:50,589 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (<= 0 ~N~0) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#memory_int| |old(#memory_int)|) (<= |old(~N~0)| 0) (<= 0 |old(~N~0)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:47:50,589 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 204#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:47:50,590 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 00:47:50,590 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 195#(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_main_~#a~0.base_BEFORE_CALL_1045| Int) (v_main_~i~0_BEFORE_CALL_1547 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (< v_main_~i~0_BEFORE_CALL_1547 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (not (= v_main_~i~0_BEFORE_CALL_1547 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_1045|) (* 4 v_main_~i~0_BEFORE_CALL_1547)))) (<= 0 v_main_~i~0_BEFORE_CALL_1547) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (< v_main_~i~0_BEFORE_CALL_1547 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (= v_main_~i~0_BEFORE_CALL_1547 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_1045|) (* 4 v_main_~i~0_BEFORE_CALL_1547))) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1547) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:47:50,590 INFO L193 IcfgInterpreter]: Reachable states at location L7 satisfy 38#(and (= 0 |#NULL.base|) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (<= 0 (+ ~N~0 2147483648)) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (<= |old(~N~0)| 0) (<= 0 |old(~N~0)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:47:50,590 INFO L193 IcfgInterpreter]: Reachable states at location L19-1 satisfy 166#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= |main_#t~mem1| 2147483647) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (= main_~i~0 |main_#t~mem1|) (<= 0 |main_#t~mem1|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:47:50,590 INFO L193 IcfgInterpreter]: Reachable states at location L19 satisfy 153#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:47:50,591 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 170#(exists ((|v_main_~#a~0.base_BEFORE_CALL_1045| Int) (v_main_~i~0_BEFORE_CALL_1547 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (< v_main_~i~0_BEFORE_CALL_1547 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (not (= v_main_~i~0_BEFORE_CALL_1547 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_1045|) (* 4 v_main_~i~0_BEFORE_CALL_1547)))) (<= 0 v_main_~i~0_BEFORE_CALL_1547) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (< v_main_~i~0_BEFORE_CALL_1547 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (= v_main_~i~0_BEFORE_CALL_1547 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_1045|) (* 4 v_main_~i~0_BEFORE_CALL_1547))) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1547) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-07 00:47:50,591 INFO L193 IcfgInterpreter]: Reachable states at location L2-3 satisfy 180#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((|v_main_~#a~0.base_BEFORE_CALL_1045| Int) (v_main_~i~0_BEFORE_CALL_1547 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (< v_main_~i~0_BEFORE_CALL_1547 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (not (= v_main_~i~0_BEFORE_CALL_1547 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_1045|) (* 4 v_main_~i~0_BEFORE_CALL_1547)))) (<= 0 v_main_~i~0_BEFORE_CALL_1547) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (< v_main_~i~0_BEFORE_CALL_1547 ~N~0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (= v_main_~i~0_BEFORE_CALL_1547 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_1045|) (* 4 v_main_~i~0_BEFORE_CALL_1547))) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 v_main_~i~0_BEFORE_CALL_1547) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:47:50,591 INFO L193 IcfgInterpreter]: Reachable states at location L12-2 satisfy 76#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (<= 0 main_~i~0) (= 0 |#NULL.base|) (<= 0 |#NULL.base|) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (= |#valid| (store |old(#valid)| |main_~#a~0.base| 1)) (<= 0 (+ ~N~0 2147483648)) (= main_~k~0 0) (<= main_~k~0 0) (= |main_~#a~0.offset| 0) (<= ~N~0 2147483647) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= |main_~#a~0.offset| 0) (<= main_~i~0 0) (< 0 ~N~0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (= (store |old(#length)| |main_~#a~0.base| (* 4 ~N~0)) |#length|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0)) [2019-10-07 00:47:55,876 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 00:47:55,877 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 59, 58, 12] total 125 [2019-10-07 00:47:55,877 INFO L442 AbstractCegarLoop]: Interpolant automaton has 125 states [2019-10-07 00:47:55,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2019-10-07 00:47:55,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=372, Invalid=15128, Unknown=0, NotChecked=0, Total=15500 [2019-10-07 00:47:55,879 INFO L87 Difference]: Start difference. First operand 122 states and 147 transitions. Second operand 125 states. [2019-10-07 00:48:16,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:48:16,246 INFO L93 Difference]: Finished difference Result 130 states and 156 transitions. [2019-10-07 00:48:16,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2019-10-07 00:48:16,246 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 213 [2019-10-07 00:48:16,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:48:16,247 INFO L225 Difference]: With dead ends: 130 [2019-10-07 00:48:16,247 INFO L226 Difference]: Without dead ends: 128 [2019-10-07 00:48:16,250 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 809 GetRequests, 494 SyntacticMatches, 80 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18594 ImplicationChecksByTransitivity, 26.3s TimeCoverageRelationStatistics Valid=1472, Invalid=54460, Unknown=0, NotChecked=0, Total=55932 [2019-10-07 00:48:16,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2019-10-07 00:48:16,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 125. [2019-10-07 00:48:16,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2019-10-07 00:48:16,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 151 transitions. [2019-10-07 00:48:16,305 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 151 transitions. Word has length 213 [2019-10-07 00:48:16,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:48:16,306 INFO L462 AbstractCegarLoop]: Abstraction has 125 states and 151 transitions. [2019-10-07 00:48:16,306 INFO L463 AbstractCegarLoop]: Interpolant automaton has 125 states. [2019-10-07 00:48:16,306 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 151 transitions. [2019-10-07 00:48:16,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2019-10-07 00:48:16,307 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:48:16,307 INFO L385 BasicCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:48:16,518 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:48:16,518 INFO L410 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:48:16,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:48:16,519 INFO L82 PathProgramCache]: Analyzing trace with hash -699786146, now seen corresponding path program 45 times [2019-10-07 00:48:16,519 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:48:16,519 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:48:16,520 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:48:16,520 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:48:16,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:48:16,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:48:17,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 1003 proven. 427 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2019-10-07 00:48:17,499 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:48:17,499 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:48:17,499 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 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:48:18,353 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-07 00:48:18,354 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-07 00:48:18,355 INFO L256 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 56 conjunts are in the unsatisfiable core [2019-10-07 00:48:18,358 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:48:19,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 1079 proven. 351 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2019-10-07 00:48:19,611 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:48:20,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 1079 proven. 351 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2019-10-07 00:48:20,521 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:48:20,521 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-07 00:48:20,521 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:48:20,521 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:48:20,522 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:48:20,522 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:48:20,537 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 25 for LOIs [2019-10-07 00:48:20,728 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2019-10-07 00:48:20,735 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-10-07 00:48:20,738 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 00:48:20,739 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 00:48:20,739 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 175#(and (exists ((|v_main_~#a~0.base_BEFORE_CALL_1054| Int) (v_main_~i~0_BEFORE_CALL_1608 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_1608 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_1608) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (= v_main_~i~0_BEFORE_CALL_1608 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_1054|) (* 4 v_main_~i~0_BEFORE_CALL_1608))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_1608 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_1608) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (not (= v_main_~i~0_BEFORE_CALL_1608 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_1054|) (* 4 v_main_~i~0_BEFORE_CALL_1608)))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:48:20,739 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 190#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_main_~#a~0.base_BEFORE_CALL_1054| Int) (v_main_~i~0_BEFORE_CALL_1608 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_1608 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_1608) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (= v_main_~i~0_BEFORE_CALL_1608 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_1054|) (* 4 v_main_~i~0_BEFORE_CALL_1608))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_1608 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_1608) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (not (= v_main_~i~0_BEFORE_CALL_1608 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_1054|) (* 4 v_main_~i~0_BEFORE_CALL_1608)))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:48:20,739 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 199#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 00:48:20,739 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertEXIT satisfy 185#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((|v_main_~#a~0.base_BEFORE_CALL_1054| Int) (v_main_~i~0_BEFORE_CALL_1608 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_1608 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_1608) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (= v_main_~i~0_BEFORE_CALL_1608 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_1054|) (* 4 v_main_~i~0_BEFORE_CALL_1608))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_1608 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_1608) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (not (= v_main_~i~0_BEFORE_CALL_1608 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_1054|) (* 4 v_main_~i~0_BEFORE_CALL_1608)))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:48:20,740 INFO L193 IcfgInterpreter]: Reachable states at location L18-2 satisfy 148#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:48:20,740 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:48:20,740 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (<= 0 ~N~0) (= |#valid| |old(#valid)|) (= ~N~0 |old(~N~0)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:48:20,740 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 204#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 ~N~0) (= 0 |#NULL.base|) (<= 0 ~N~0) (<= |#NULL.base| 0) (<= ~N~0 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:48:20,740 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 00:48:20,740 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 195#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_main_~#a~0.base_BEFORE_CALL_1054| Int) (v_main_~i~0_BEFORE_CALL_1608 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_1608 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_1608) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (= v_main_~i~0_BEFORE_CALL_1608 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_1054|) (* 4 v_main_~i~0_BEFORE_CALL_1608))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_1608 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_1608) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (not (= v_main_~i~0_BEFORE_CALL_1608 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_1054|) (* 4 v_main_~i~0_BEFORE_CALL_1608)))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:48:20,740 INFO L193 IcfgInterpreter]: Reachable states at location L7 satisfy 38#(and (= 0 |#NULL.base|) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (<= 0 (+ ~N~0 2147483648)) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |old(#length)| |#length|)) [2019-10-07 00:48:20,741 INFO L193 IcfgInterpreter]: Reachable states at location L19-1 satisfy 166#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (<= |main_#t~mem1| 2147483647) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (= main_~i~0 |main_#t~mem1|) (<= 0 |main_#t~mem1|) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:48:20,741 INFO L193 IcfgInterpreter]: Reachable states at location L19 satisfy 153#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (= |old(~N~0)| 0) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~0 2147483647) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0) (< main_~i~0 ~N~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:48:20,741 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 170#(exists ((|v_main_~#a~0.base_BEFORE_CALL_1054| Int) (v_main_~i~0_BEFORE_CALL_1608 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_1608 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_1608) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (= v_main_~i~0_BEFORE_CALL_1608 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_1054|) (* 4 v_main_~i~0_BEFORE_CALL_1608))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_1608 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_1608) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (not (= v_main_~i~0_BEFORE_CALL_1608 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_1054|) (* 4 v_main_~i~0_BEFORE_CALL_1608)))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-07 00:48:20,741 INFO L193 IcfgInterpreter]: Reachable states at location L2-3 satisfy 180#(and (not (= 0 __VERIFIER_assert_~cond)) (exists ((|v_main_~#a~0.base_BEFORE_CALL_1054| Int) (v_main_~i~0_BEFORE_CALL_1608 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_1608 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_1608) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (= v_main_~i~0_BEFORE_CALL_1608 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_1054|) (* 4 v_main_~i~0_BEFORE_CALL_1608))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~N~0 2147483647) (<= 0 ~N~0) (<= |#NULL.base| 0) (< v_main_~i~0_BEFORE_CALL_1608 ~N~0) (<= 0 v_main_~i~0_BEFORE_CALL_1608) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (not (= v_main_~i~0_BEFORE_CALL_1608 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_1054|) (* 4 v_main_~i~0_BEFORE_CALL_1608)))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:48:20,741 INFO L193 IcfgInterpreter]: Reachable states at location L12-2 satisfy 76#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= ~N~0 2147483647) (<= |#NULL.base| 0) (= |old(~N~0)| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (<= 0 main_~i~0) (= 0 |#NULL.base|) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (= |#valid| (store |old(#valid)| |main_~#a~0.base| 1)) (<= 0 (+ ~N~0 2147483648)) (= main_~k~0 0) (<= main_~k~0 0) (= |main_~#a~0.offset| 0) (<= ~N~0 2147483647) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= main_~i~0 0) (< 0 ~N~0) (= 0 (select |old(#valid)| 0)) (= 0 |old(~N~0)|) (= (store |old(#length)| |main_~#a~0.base| (* 4 ~N~0)) |#length|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 ~N~0) (<= 0 |old(~N~0)|) (<= |old(~N~0)| 0)) [2019-10-07 00:48:23,674 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 00:48:23,675 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 57, 56, 12] total 98 [2019-10-07 00:48:23,675 INFO L442 AbstractCegarLoop]: Interpolant automaton has 98 states [2019-10-07 00:48:23,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2019-10-07 00:48:23,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1724, Invalid=7782, Unknown=0, NotChecked=0, Total=9506 [2019-10-07 00:48:23,676 INFO L87 Difference]: Start difference. First operand 125 states and 151 transitions. Second operand 98 states. [2019-10-07 00:48:37,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:48:37,627 INFO L93 Difference]: Finished difference Result 226 states and 278 transitions. [2019-10-07 00:48:37,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2019-10-07 00:48:37,628 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 220 [2019-10-07 00:48:37,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:48:37,630 INFO L225 Difference]: With dead ends: 226 [2019-10-07 00:48:37,630 INFO L226 Difference]: Without dead ends: 130 [2019-10-07 00:48:37,638 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 883 GetRequests, 540 SyntacticMatches, 79 SemanticMatches, 264 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29805 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=11466, Invalid=59024, Unknown=0, NotChecked=0, Total=70490 [2019-10-07 00:48:37,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2019-10-07 00:48:37,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 126. [2019-10-07 00:48:37,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2019-10-07 00:48:37,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 152 transitions. [2019-10-07 00:48:37,740 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 152 transitions. Word has length 220 [2019-10-07 00:48:37,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:48:37,740 INFO L462 AbstractCegarLoop]: Abstraction has 126 states and 152 transitions. [2019-10-07 00:48:37,740 INFO L463 AbstractCegarLoop]: Interpolant automaton has 98 states. [2019-10-07 00:48:37,741 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 152 transitions. [2019-10-07 00:48:37,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2019-10-07 00:48:37,743 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:48:37,743 INFO L385 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:48:37,953 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:48:37,954 INFO L410 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:48:37,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:48:37,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1906549895, now seen corresponding path program 46 times [2019-10-07 00:48:37,955 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:48:37,955 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:48:37,955 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:48:37,956 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:48:37,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:48:38,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat