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/loop-acceleration/array_2-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 13:28:58,880 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 13:28:58,882 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 13:28:58,894 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 13:28:58,895 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 13:28:58,896 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 13:28:58,897 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 13:28:58,899 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 13:28:58,900 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 13:28:58,901 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 13:28:58,902 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 13:28:58,903 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 13:28:58,903 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 13:28:58,904 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 13:28:58,905 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 13:28:58,906 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 13:28:58,907 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 13:28:58,908 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 13:28:58,910 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 13:28:58,913 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 13:28:58,915 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 13:28:58,918 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 13:28:58,919 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 13:28:58,920 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 13:28:58,922 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-07 13:28:58,930 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 13:28:58,931 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 13:28:58,931 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 13:28:58,932 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-07 13:28:58,946 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 13:28:58,947 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 13:28:58,948 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 13:28:58,948 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 13:28:58,948 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 13:28:58,948 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 13:28:58,949 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 13:28:58,949 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 13:28:58,949 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 13:28:58,949 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 13:28:58,949 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 13:28:58,949 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 13:28:58,950 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 13:28:58,950 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 13:28:58,950 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 13:28:58,950 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 13:28:58,950 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 13:28:58,951 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 13:28:58,951 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 13:28:58,951 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 13:28:58,951 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 13:28:58,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 13:28:58,952 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 13:28:58,952 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 13:28:58,952 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 13:28:58,952 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 13:28:58,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 13:28:58,953 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 13:28:58,953 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-07 13:28:59,225 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 13:28:59,238 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 13:28:59,241 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 13:28:59,242 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 13:28:59,243 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 13:28:59,243 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/array_2-1.i [2019-10-07 13:28:59,301 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d819712f/01efa0212bef4da4990c113b4802a578/FLAG8cb509d4b [2019-10-07 13:28:59,716 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 13:28:59,717 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/array_2-1.i [2019-10-07 13:28:59,723 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d819712f/01efa0212bef4da4990c113b4802a578/FLAG8cb509d4b [2019-10-07 13:29:00,117 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d819712f/01efa0212bef4da4990c113b4802a578 [2019-10-07 13:29:00,127 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 13:29:00,129 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 13:29:00,130 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 13:29:00,130 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 13:29:00,133 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 13:29:00,134 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:29:00" (1/1) ... [2019-10-07 13:29:00,137 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c19cb95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:29:00, skipping insertion in model container [2019-10-07 13:29:00,137 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:29:00" (1/1) ... [2019-10-07 13:29:00,145 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 13:29:00,162 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 13:29:00,328 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:29:00,332 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 13:29:00,352 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:29:00,372 INFO L192 MainTranslator]: Completed translation [2019-10-07 13:29:00,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:29:00 WrapperNode [2019-10-07 13:29:00,373 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 13:29:00,373 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 13:29:00,374 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 13:29:00,374 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 13:29:00,470 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:29:00" (1/1) ... [2019-10-07 13:29:00,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:29:00" (1/1) ... [2019-10-07 13:29:00,477 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:29:00" (1/1) ... [2019-10-07 13:29:00,479 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:29:00" (1/1) ... [2019-10-07 13:29:00,493 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:29:00" (1/1) ... [2019-10-07 13:29:00,497 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:29:00" (1/1) ... [2019-10-07 13:29:00,504 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:29:00" (1/1) ... [2019-10-07 13:29:00,506 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 13:29:00,507 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 13:29:00,507 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 13:29:00,507 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 13:29:00,508 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:29:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 13:29:00,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 13:29:00,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 13:29:00,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-07 13:29:00,572 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 13:29:00,572 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 13:29:00,573 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-07 13:29:00,573 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 13:29:00,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 13:29:00,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 13:29:00,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 13:29:00,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 13:29:00,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 13:29:00,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 13:29:00,823 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 13:29:00,823 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 13:29:00,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:29:00 BoogieIcfgContainer [2019-10-07 13:29:00,825 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 13:29:00,827 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 13:29:00,827 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 13:29:00,840 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 13:29:00,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 01:29:00" (1/3) ... [2019-10-07 13:29:00,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bf87817 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:29:00, skipping insertion in model container [2019-10-07 13:29:00,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:29:00" (2/3) ... [2019-10-07 13:29:00,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bf87817 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:29:00, skipping insertion in model container [2019-10-07 13:29:00,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:29:00" (3/3) ... [2019-10-07 13:29:00,849 INFO L109 eAbstractionObserver]: Analyzing ICFG array_2-1.i [2019-10-07 13:29:00,865 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 13:29:00,872 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 13:29:00,889 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 13:29:00,925 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 13:29:00,925 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 13:29:00,926 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 13:29:00,926 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 13:29:00,926 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 13:29:00,926 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 13:29:00,926 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 13:29:00,926 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 13:29:00,940 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2019-10-07 13:29:00,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-07 13:29:00,945 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:29:00,946 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:29:00,948 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:29:00,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:29:00,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1959451811, now seen corresponding path program 1 times [2019-10-07 13:29:00,960 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:29:00,960 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:29:00,960 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:29:00,961 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:29:00,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:29:01,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:29:01,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:29:01,114 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:29:01,115 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:29:01,115 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 13:29:01,119 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 13:29:01,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 13:29:01,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 13:29:01,133 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 3 states. [2019-10-07 13:29:01,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:29:01,164 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2019-10-07 13:29:01,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 13:29:01,166 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-10-07 13:29:01,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:29:01,173 INFO L225 Difference]: With dead ends: 29 [2019-10-07 13:29:01,174 INFO L226 Difference]: Without dead ends: 12 [2019-10-07 13:29:01,177 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 13:29:01,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-10-07 13:29:01,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-10-07 13:29:01,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-10-07 13:29:01,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-10-07 13:29:01,207 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2019-10-07 13:29:01,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:29:01,208 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-10-07 13:29:01,208 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 13:29:01,208 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-10-07 13:29:01,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-07 13:29:01,209 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:29:01,209 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:29:01,210 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:29:01,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:29:01,210 INFO L82 PathProgramCache]: Analyzing trace with hash 504932467, now seen corresponding path program 1 times [2019-10-07 13:29:01,211 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:29:01,211 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:29:01,211 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:29:01,211 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:29:01,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:29:01,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:29:01,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:29:01,293 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:29:01,293 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:29:01,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:29:01,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:29:01,347 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 13:29:01,353 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:29:01,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:29:01,401 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:29:01,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:29:01,444 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 13:29:01,475 INFO L162 IcfgInterpreter]: Started Sifa with 11 locations of interest [2019-10-07 13:29:01,475 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 13:29:01,497 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 13:29:01,505 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 13:29:01,506 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 13:29:01,715 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-07 13:29:02,168 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 34 for LOIs [2019-10-07 13:29:02,182 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-07 13:29:02,192 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 13:29:02,192 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 13:29:02,192 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 13:29:02,194 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 13:29:02,194 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 105#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 13:29:02,195 INFO L193 IcfgInterpreter]: Reachable states at location L17 satisfy 76#(and (= (select (select |#memory_int| |main_~#A~0.base|) (+ |main_~#A~0.offset| 4096)) |main_#t~mem2|) (= |#NULL.base| 0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~i~0) (<= |#NULL.base| 0) (= |main_#t~mem3| (select (select |#memory_int| |main_~#B~0.base|) (+ |main_~#B~0.offset| 4096))) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (not (< main_~i~0 2048)) (= |main_~#B~0.offset| 0) (= |main_~#A~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= |main_~#B~0.offset| 0) (<= 0 |main_~#B~0.offset|) (<= 2048 main_~i~0) (= |#NULL.offset| 0)) [2019-10-07 13:29:02,196 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 13:29:02,196 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 100#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 13:29:02,197 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 96#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_prenex_2 Int) (|v_main_~#A~0.base_BEFORE_CALL_1| Int) (v_prenex_1 Int) (|v_main_~#B~0.base_BEFORE_CALL_1| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (not (= (select (select |#memory_int| v_prenex_1) 4096) (select (select |#memory_int| v_prenex_2) 4096))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_1|) 4096) (select (select |#memory_int| |v_main_~#B~0.base_BEFORE_CALL_1|) 4096)) (= |#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 13:29:02,198 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 81#(exists ((v_prenex_2 Int) (|v_main_~#A~0.base_BEFORE_CALL_1| Int) (v_prenex_1 Int) (|v_main_~#B~0.base_BEFORE_CALL_1| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (not (= (select (select |#memory_int| v_prenex_1) 4096) (select (select |#memory_int| v_prenex_2) 4096))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_1|) 4096) (select (select |#memory_int| |v_main_~#B~0.base_BEFORE_CALL_1|) 4096)) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-07 13:29:02,199 INFO L193 IcfgInterpreter]: Reachable states at location L4 satisfy 91#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_prenex_2 Int) (|v_main_~#A~0.base_BEFORE_CALL_1| Int) (v_prenex_1 Int) (|v_main_~#B~0.base_BEFORE_CALL_1| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (not (= (select (select |#memory_int| v_prenex_1) 4096) (select (select |#memory_int| v_prenex_2) 4096))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_1|) 4096) (select (select |#memory_int| |v_main_~#B~0.base_BEFORE_CALL_1|) 4096)) (= |#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 13:29:02,200 INFO L193 IcfgInterpreter]: Reachable states at location L3 satisfy 86#(and (exists ((v_prenex_2 Int) (|v_main_~#A~0.base_BEFORE_CALL_1| Int) (v_prenex_1 Int) (|v_main_~#B~0.base_BEFORE_CALL_1| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (not (= (select (select |#memory_int| v_prenex_1) 4096) (select (select |#memory_int| v_prenex_2) 4096))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_1|) 4096) (select (select |#memory_int| |v_main_~#B~0.base_BEFORE_CALL_1|) 4096)) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 13:29:02,200 INFO L193 IcfgInterpreter]: Reachable states at location L13-3 satisfy 71#(and (or (and (= |#NULL.base| 0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~i~0) (= |main_~#B~0.offset| 0) (= |main_~#A~0.offset| 0) (<= 0 |main_~#B~0.offset|) (= |#NULL.offset| 0)) (and (<= 0 main_~i~0) (= 0 |#NULL.base|) (= 0 |main_~#A~0.offset|) (not (= 0 |main_~#A~0.base|)) (= |#length| (store (store |old(#length)| |main_~#A~0.base| 8192) |main_~#B~0.base| 8192)) (= |#valid| (store (store |old(#valid)| |main_~#A~0.base| 1) |main_~#B~0.base| 1)) (= (select |old(#valid)| |main_~#A~0.base|) 0) (<= 0 |main_~#A~0.offset|) (< |main_~#B~0.base| |#StackHeapBarrier|) (= (select (store |old(#valid)| |main_~#A~0.base| 1) |main_~#B~0.base|) 0) (not (= |main_~#B~0.base| 0)) (= 0 |main_~#B~0.offset|) (<= main_~i~0 0) (= 0 (select |old(#valid)| 0)) (<= 0 |main_~#B~0.offset|) (< |main_~#A~0.base| |#StackHeapBarrier|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= |main_~#B~0.offset| 0)) [2019-10-07 13:29:02,624 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 13:29:02,624 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 9] total 16 [2019-10-07 13:29:02,627 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-07 13:29:02,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-07 13:29:02,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-10-07 13:29:02,628 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 16 states. [2019-10-07 13:29:03,065 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2019-10-07 13:29:03,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:29:03,332 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2019-10-07 13:29:03,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-07 13:29:03,333 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 11 [2019-10-07 13:29:03,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:29:03,334 INFO L225 Difference]: With dead ends: 20 [2019-10-07 13:29:03,334 INFO L226 Difference]: Without dead ends: 15 [2019-10-07 13:29:03,335 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=129, Invalid=521, Unknown=0, NotChecked=0, Total=650 [2019-10-07 13:29:03,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-10-07 13:29:03,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-10-07 13:29:03,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-10-07 13:29:03,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2019-10-07 13:29:03,341 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2019-10-07 13:29:03,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:29:03,341 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2019-10-07 13:29:03,341 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-07 13:29:03,342 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2019-10-07 13:29:03,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-07 13:29:03,342 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:29:03,342 INFO L385 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:29:03,546 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:29:03,547 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:29:03,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:29:03,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1070026915, now seen corresponding path program 2 times [2019-10-07 13:29:03,548 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:29:03,548 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:29:03,548 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:29:03,548 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:29:03,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:29:03,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:29:03,631 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:29:03,631 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:29:03,631 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:29:03,632 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:29:03,685 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-10-07 13:29:03,686 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-07 13:29:03,687 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-07 13:29:03,691 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:29:03,702 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:29:03,703 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:29:03,777 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:29:03,777 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 13:29:03,779 INFO L162 IcfgInterpreter]: Started Sifa with 11 locations of interest [2019-10-07 13:29:03,780 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 13:29:03,780 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 13:29:03,781 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 13:29:03,782 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 13:29:03,831 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-07 13:29:04,142 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 34 for LOIs [2019-10-07 13:29:04,155 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-07 13:29:04,163 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 13:29:04,163 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 13:29:04,164 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 13:29:04,164 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 13:29:04,164 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 105#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 13:29:04,165 INFO L193 IcfgInterpreter]: Reachable states at location L17 satisfy 76#(and (= (select (select |#memory_int| |main_~#A~0.base|) (+ |main_~#A~0.offset| 4096)) |main_#t~mem2|) (= |#NULL.base| 0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~i~0) (<= |#NULL.base| 0) (= |main_#t~mem3| (select (select |#memory_int| |main_~#B~0.base|) (+ |main_~#B~0.offset| 4096))) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (not (< main_~i~0 2048)) (= |main_~#B~0.offset| 0) (= |main_~#A~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= |main_~#B~0.offset| 0) (<= 0 |main_~#B~0.offset|) (<= 2048 main_~i~0) (= |#NULL.offset| 0)) [2019-10-07 13:29:04,166 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 13:29:04,166 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 100#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 13:29:04,167 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 96#(and (<= __VERIFIER_assert_~cond 0) (exists ((v_prenex_4 Int) (v_prenex_3 Int) (|v_main_~#B~0.base_BEFORE_CALL_2| Int) (|v_main_~#A~0.base_BEFORE_CALL_2| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (not (= (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_2|) 4096) (select (select |#memory_int| |v_main_~#B~0.base_BEFORE_CALL_2|) 4096)))) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= (select (select |#memory_int| v_prenex_4) 4096) (select (select |#memory_int| v_prenex_3) 4096))))) (<= 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 13:29:04,167 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 81#(exists ((v_prenex_4 Int) (v_prenex_3 Int) (|v_main_~#B~0.base_BEFORE_CALL_2| Int) (|v_main_~#A~0.base_BEFORE_CALL_2| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (not (= (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_2|) 4096) (select (select |#memory_int| |v_main_~#B~0.base_BEFORE_CALL_2|) 4096)))) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= (select (select |#memory_int| v_prenex_4) 4096) (select (select |#memory_int| v_prenex_3) 4096))))) [2019-10-07 13:29:04,167 INFO L193 IcfgInterpreter]: Reachable states at location L4 satisfy 91#(and (<= __VERIFIER_assert_~cond 0) (exists ((v_prenex_4 Int) (v_prenex_3 Int) (|v_main_~#B~0.base_BEFORE_CALL_2| Int) (|v_main_~#A~0.base_BEFORE_CALL_2| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (not (= (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_2|) 4096) (select (select |#memory_int| |v_main_~#B~0.base_BEFORE_CALL_2|) 4096)))) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= (select (select |#memory_int| v_prenex_4) 4096) (select (select |#memory_int| v_prenex_3) 4096))))) (<= 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 13:29:04,168 INFO L193 IcfgInterpreter]: Reachable states at location L3 satisfy 86#(and (exists ((v_prenex_4 Int) (v_prenex_3 Int) (|v_main_~#B~0.base_BEFORE_CALL_2| Int) (|v_main_~#A~0.base_BEFORE_CALL_2| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (not (= (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_2|) 4096) (select (select |#memory_int| |v_main_~#B~0.base_BEFORE_CALL_2|) 4096)))) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= (select (select |#memory_int| v_prenex_4) 4096) (select (select |#memory_int| v_prenex_3) 4096))))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 13:29:04,168 INFO L193 IcfgInterpreter]: Reachable states at location L13-3 satisfy 71#(and (or (and (= |#NULL.base| 0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~i~0) (= |main_~#B~0.offset| 0) (= |main_~#A~0.offset| 0) (<= 0 |main_~#B~0.offset|) (= |#NULL.offset| 0)) (and (<= 0 main_~i~0) (= 0 |#NULL.base|) (= 0 |main_~#A~0.offset|) (not (= 0 |main_~#A~0.base|)) (= |#length| (store (store |old(#length)| |main_~#A~0.base| 8192) |main_~#B~0.base| 8192)) (= |#valid| (store (store |old(#valid)| |main_~#A~0.base| 1) |main_~#B~0.base| 1)) (= (select |old(#valid)| |main_~#A~0.base|) 0) (<= 0 |main_~#A~0.offset|) (< |main_~#B~0.base| |#StackHeapBarrier|) (= (select (store |old(#valid)| |main_~#A~0.base| 1) |main_~#B~0.base|) 0) (not (= |main_~#B~0.base| 0)) (= 0 |main_~#B~0.offset|) (<= main_~i~0 0) (= 0 (select |old(#valid)| 0)) (<= 0 |main_~#B~0.offset|) (< |main_~#A~0.base| |#StackHeapBarrier|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= |main_~#B~0.offset| 0)) [2019-10-07 13:29:04,556 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 13:29:04,556 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 9] total 22 [2019-10-07 13:29:04,557 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-10-07 13:29:04,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-10-07 13:29:04,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=359, Unknown=0, NotChecked=0, Total=462 [2019-10-07 13:29:04,558 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 22 states. [2019-10-07 13:29:05,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:29:05,293 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2019-10-07 13:29:05,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-07 13:29:05,293 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 14 [2019-10-07 13:29:05,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:29:05,294 INFO L225 Difference]: With dead ends: 26 [2019-10-07 13:29:05,294 INFO L226 Difference]: Without dead ends: 21 [2019-10-07 13:29:05,295 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=300, Invalid=1106, Unknown=0, NotChecked=0, Total=1406 [2019-10-07 13:29:05,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-10-07 13:29:05,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-10-07 13:29:05,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-10-07 13:29:05,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2019-10-07 13:29:05,301 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 14 [2019-10-07 13:29:05,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:29:05,301 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2019-10-07 13:29:05,302 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-10-07 13:29:05,302 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2019-10-07 13:29:05,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-07 13:29:05,303 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:29:05,303 INFO L385 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:29:05,506 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:29:05,507 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:29:05,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:29:05,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1928773981, now seen corresponding path program 3 times [2019-10-07 13:29:05,508 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:29:05,508 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:29:05,508 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:29:05,508 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:29:05,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:29:05,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:29:05,654 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:29:05,655 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:29:05,655 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:29:05,656 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:29:05,722 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-07 13:29:05,723 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-07 13:29:05,724 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-07 13:29:05,726 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:29:05,740 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:29:05,740 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:29:05,952 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:29:05,952 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 13:29:05,954 INFO L162 IcfgInterpreter]: Started Sifa with 11 locations of interest [2019-10-07 13:29:05,954 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 13:29:05,954 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 13:29:05,955 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 13:29:05,955 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 13:29:05,983 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-07 13:29:06,201 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 34 for LOIs [2019-10-07 13:29:06,227 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-07 13:29:06,237 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 13:29:06,237 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 13:29:06,237 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 13:29:06,238 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 13:29:06,238 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 105#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 13:29:06,238 INFO L193 IcfgInterpreter]: Reachable states at location L17 satisfy 76#(and (= (select (select |#memory_int| |main_~#A~0.base|) (+ |main_~#A~0.offset| 4096)) |main_#t~mem2|) (= |#NULL.base| 0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~i~0) (<= |#NULL.base| 0) (= |main_#t~mem3| (select (select |#memory_int| |main_~#B~0.base|) (+ |main_~#B~0.offset| 4096))) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (not (< main_~i~0 2048)) (= |main_~#B~0.offset| 0) (= |main_~#A~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= |main_~#B~0.offset| 0) (<= 0 |main_~#B~0.offset|) (<= 2048 main_~i~0) (= |#NULL.offset| 0)) [2019-10-07 13:29:06,238 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 13:29:06,239 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 100#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 13:29:06,239 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 96#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_prenex_6 Int) (v_prenex_5 Int) (|v_main_~#B~0.base_BEFORE_CALL_3| Int) (|v_main_~#A~0.base_BEFORE_CALL_3| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_3|) 4096) (select (select |#memory_int| |v_main_~#B~0.base_BEFORE_CALL_3|) 4096))) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (= (select (select |#memory_int| v_prenex_6) 4096) (select (select |#memory_int| v_prenex_5) 4096)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 13:29:06,239 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 81#(exists ((v_prenex_6 Int) (v_prenex_5 Int) (|v_main_~#B~0.base_BEFORE_CALL_3| Int) (|v_main_~#A~0.base_BEFORE_CALL_3| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_3|) 4096) (select (select |#memory_int| |v_main_~#B~0.base_BEFORE_CALL_3|) 4096))) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (= (select (select |#memory_int| v_prenex_6) 4096) (select (select |#memory_int| v_prenex_5) 4096)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-07 13:29:06,240 INFO L193 IcfgInterpreter]: Reachable states at location L4 satisfy 91#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_prenex_6 Int) (v_prenex_5 Int) (|v_main_~#B~0.base_BEFORE_CALL_3| Int) (|v_main_~#A~0.base_BEFORE_CALL_3| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_3|) 4096) (select (select |#memory_int| |v_main_~#B~0.base_BEFORE_CALL_3|) 4096))) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (= (select (select |#memory_int| v_prenex_6) 4096) (select (select |#memory_int| v_prenex_5) 4096)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 13:29:06,240 INFO L193 IcfgInterpreter]: Reachable states at location L3 satisfy 86#(and (exists ((v_prenex_6 Int) (v_prenex_5 Int) (|v_main_~#B~0.base_BEFORE_CALL_3| Int) (|v_main_~#A~0.base_BEFORE_CALL_3| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_3|) 4096) (select (select |#memory_int| |v_main_~#B~0.base_BEFORE_CALL_3|) 4096))) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (= (select (select |#memory_int| v_prenex_6) 4096) (select (select |#memory_int| v_prenex_5) 4096)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 13:29:06,240 INFO L193 IcfgInterpreter]: Reachable states at location L13-3 satisfy 71#(and (or (and (= |#NULL.base| 0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~i~0) (= |main_~#B~0.offset| 0) (= |main_~#A~0.offset| 0) (<= 0 |main_~#B~0.offset|) (= |#NULL.offset| 0)) (and (<= 0 main_~i~0) (= 0 |#NULL.base|) (= 0 |main_~#A~0.offset|) (not (= 0 |main_~#A~0.base|)) (= |#length| (store (store |old(#length)| |main_~#A~0.base| 8192) |main_~#B~0.base| 8192)) (= |#valid| (store (store |old(#valid)| |main_~#A~0.base| 1) |main_~#B~0.base| 1)) (= (select |old(#valid)| |main_~#A~0.base|) 0) (<= 0 |main_~#A~0.offset|) (< |main_~#B~0.base| |#StackHeapBarrier|) (= (select (store |old(#valid)| |main_~#A~0.base| 1) |main_~#B~0.base|) 0) (not (= |main_~#B~0.base| 0)) (= 0 |main_~#B~0.offset|) (<= main_~i~0 0) (= 0 (select |old(#valid)| 0)) (<= 0 |main_~#B~0.offset|) (< |main_~#A~0.base| |#StackHeapBarrier|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= |main_~#B~0.offset| 0)) [2019-10-07 13:29:06,647 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 13:29:06,648 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13, 9] total 34 [2019-10-07 13:29:06,649 INFO L442 AbstractCegarLoop]: Interpolant automaton has 34 states [2019-10-07 13:29:06,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2019-10-07 13:29:06,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=797, Unknown=0, NotChecked=0, Total=1122 [2019-10-07 13:29:06,650 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 34 states. [2019-10-07 13:29:08,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:29:08,001 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2019-10-07 13:29:08,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-10-07 13:29:08,001 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 20 [2019-10-07 13:29:08,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:29:08,002 INFO L225 Difference]: With dead ends: 38 [2019-10-07 13:29:08,002 INFO L226 Difference]: Without dead ends: 33 [2019-10-07 13:29:08,004 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 904 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=966, Invalid=2816, Unknown=0, NotChecked=0, Total=3782 [2019-10-07 13:29:08,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-10-07 13:29:08,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2019-10-07 13:29:08,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-10-07 13:29:08,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2019-10-07 13:29:08,012 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 20 [2019-10-07 13:29:08,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:29:08,012 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2019-10-07 13:29:08,012 INFO L463 AbstractCegarLoop]: Interpolant automaton has 34 states. [2019-10-07 13:29:08,012 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2019-10-07 13:29:08,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-07 13:29:08,014 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:29:08,014 INFO L385 BasicCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:29:08,227 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:29:08,227 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:29:08,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:29:08,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1953340067, now seen corresponding path program 4 times [2019-10-07 13:29:08,228 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:29:08,228 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:29:08,228 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:29:08,228 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:29:08,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:29:08,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:29:08,608 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:29:08,609 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:29:08,609 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:29:08,609 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:29:08,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:29:08,687 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 24 conjunts are in the unsatisfiable core [2019-10-07 13:29:08,692 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:29:08,724 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:29:08,725 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:29:09,345 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:29:09,346 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 13:29:09,347 INFO L162 IcfgInterpreter]: Started Sifa with 11 locations of interest [2019-10-07 13:29:09,347 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 13:29:09,348 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 13:29:09,348 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 13:29:09,348 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 13:29:09,392 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-07 13:29:09,538 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 34 for LOIs [2019-10-07 13:29:09,545 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-07 13:29:09,558 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 13:29:09,558 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 13:29:09,559 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 13:29:09,559 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 13:29:09,559 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 105#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 13:29:09,559 INFO L193 IcfgInterpreter]: Reachable states at location L17 satisfy 76#(and (= (select (select |#memory_int| |main_~#A~0.base|) (+ |main_~#A~0.offset| 4096)) |main_#t~mem2|) (= |#NULL.base| 0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~i~0) (<= |#NULL.base| 0) (= |main_#t~mem3| (select (select |#memory_int| |main_~#B~0.base|) (+ |main_~#B~0.offset| 4096))) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (not (< main_~i~0 2048)) (= |main_~#B~0.offset| 0) (= |main_~#A~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= |main_~#B~0.offset| 0) (<= 0 |main_~#B~0.offset|) (<= 2048 main_~i~0) (= |#NULL.offset| 0)) [2019-10-07 13:29:09,560 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 13:29:09,560 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 100#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 13:29:09,561 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 96#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_prenex_7 Int) (|v_main_~#B~0.base_BEFORE_CALL_4| Int) (|v_main_~#A~0.base_BEFORE_CALL_4| Int) (v_prenex_8 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= (select (select |#memory_int| v_prenex_7) 4096) (select (select |#memory_int| v_prenex_8) 4096)) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#B~0.base_BEFORE_CALL_4|) 4096) (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_4|) 4096))) (<= 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 13:29:09,561 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 81#(exists ((v_prenex_7 Int) (|v_main_~#B~0.base_BEFORE_CALL_4| Int) (|v_main_~#A~0.base_BEFORE_CALL_4| Int) (v_prenex_8 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= (select (select |#memory_int| v_prenex_7) 4096) (select (select |#memory_int| v_prenex_8) 4096)) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#B~0.base_BEFORE_CALL_4|) 4096) (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_4|) 4096))) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-07 13:29:09,561 INFO L193 IcfgInterpreter]: Reachable states at location L4 satisfy 91#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_prenex_7 Int) (|v_main_~#B~0.base_BEFORE_CALL_4| Int) (|v_main_~#A~0.base_BEFORE_CALL_4| Int) (v_prenex_8 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= (select (select |#memory_int| v_prenex_7) 4096) (select (select |#memory_int| v_prenex_8) 4096)) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#B~0.base_BEFORE_CALL_4|) 4096) (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_4|) 4096))) (<= 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 13:29:09,561 INFO L193 IcfgInterpreter]: Reachable states at location L13-3 satisfy 71#(and (or (and (= |#NULL.base| 0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~i~0) (= |main_~#B~0.offset| 0) (= |main_~#A~0.offset| 0) (<= 0 |main_~#B~0.offset|) (= |#NULL.offset| 0)) (and (<= 0 main_~i~0) (= 0 |#NULL.base|) (= 0 |main_~#A~0.offset|) (not (= 0 |main_~#A~0.base|)) (= |#length| (store (store |old(#length)| |main_~#A~0.base| 8192) |main_~#B~0.base| 8192)) (= |#valid| (store (store |old(#valid)| |main_~#A~0.base| 1) |main_~#B~0.base| 1)) (= (select |old(#valid)| |main_~#A~0.base|) 0) (<= 0 |main_~#A~0.offset|) (< |main_~#B~0.base| |#StackHeapBarrier|) (= (select (store |old(#valid)| |main_~#A~0.base| 1) |main_~#B~0.base|) 0) (not (= |main_~#B~0.base| 0)) (= 0 |main_~#B~0.offset|) (<= main_~i~0 0) (= 0 (select |old(#valid)| 0)) (<= 0 |main_~#B~0.offset|) (< |main_~#A~0.base| |#StackHeapBarrier|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= |main_~#B~0.offset| 0)) [2019-10-07 13:29:09,562 INFO L193 IcfgInterpreter]: Reachable states at location L3 satisfy 86#(and (exists ((v_prenex_7 Int) (|v_main_~#B~0.base_BEFORE_CALL_4| Int) (|v_main_~#A~0.base_BEFORE_CALL_4| Int) (v_prenex_8 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= (select (select |#memory_int| v_prenex_7) 4096) (select (select |#memory_int| v_prenex_8) 4096)) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#B~0.base_BEFORE_CALL_4|) 4096) (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_4|) 4096))) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 13:29:09,980 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 13:29:09,980 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25, 9] total 58 [2019-10-07 13:29:09,981 INFO L442 AbstractCegarLoop]: Interpolant automaton has 58 states [2019-10-07 13:29:09,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2019-10-07 13:29:09,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1201, Invalid=2105, Unknown=0, NotChecked=0, Total=3306 [2019-10-07 13:29:09,984 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 58 states. [2019-10-07 13:29:13,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:29:13,089 INFO L93 Difference]: Finished difference Result 62 states and 85 transitions. [2019-10-07 13:29:13,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2019-10-07 13:29:13,091 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 32 [2019-10-07 13:29:13,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:29:13,092 INFO L225 Difference]: With dead ends: 62 [2019-10-07 13:29:13,092 INFO L226 Difference]: Without dead ends: 57 [2019-10-07 13:29:13,098 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2554 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=3594, Invalid=8396, Unknown=0, NotChecked=0, Total=11990 [2019-10-07 13:29:13,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-10-07 13:29:13,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2019-10-07 13:29:13,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-10-07 13:29:13,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2019-10-07 13:29:13,109 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 32 [2019-10-07 13:29:13,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:29:13,109 INFO L462 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2019-10-07 13:29:13,110 INFO L463 AbstractCegarLoop]: Interpolant automaton has 58 states. [2019-10-07 13:29:13,110 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2019-10-07 13:29:13,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-10-07 13:29:13,111 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:29:13,111 INFO L385 BasicCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:29:13,315 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:29:13,316 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:29:13,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:29:13,317 INFO L82 PathProgramCache]: Analyzing trace with hash -751283549, now seen corresponding path program 5 times [2019-10-07 13:29:13,317 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:29:13,318 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:29:13,318 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:29:13,318 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:29:13,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:29:13,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:29:14,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:29:14,280 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:29:14,280 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:29:14,280 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:30:21,570 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2019-10-07 13:30:21,571 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-07 13:30:21,589 INFO L256 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 48 conjunts are in the unsatisfiable core [2019-10-07 13:30:21,593 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:30:21,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:30:21,622 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:30:24,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:30:24,009 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 13:30:24,010 INFO L162 IcfgInterpreter]: Started Sifa with 11 locations of interest [2019-10-07 13:30:24,010 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 13:30:24,011 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 13:30:24,011 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 13:30:24,011 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 13:30:24,038 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-07 13:30:24,201 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 34 for LOIs [2019-10-07 13:30:24,209 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-07 13:30:24,213 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 13:30:24,213 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 13:30:24,217 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 13:30:24,218 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0))) [2019-10-07 13:30:24,218 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 105#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 13:30:24,218 INFO L193 IcfgInterpreter]: Reachable states at location L17 satisfy 76#(and (= (select (select |#memory_int| |main_~#A~0.base|) (+ |main_~#A~0.offset| 4096)) |main_#t~mem2|) (= |#NULL.base| 0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~i~0) (<= |#NULL.base| 0) (= |main_#t~mem3| (select (select |#memory_int| |main_~#B~0.base|) (+ |main_~#B~0.offset| 4096))) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (not (< main_~i~0 2048)) (= |main_~#B~0.offset| 0) (= |main_~#A~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= |main_~#B~0.offset| 0) (<= 0 |main_~#B~0.offset|) (<= 2048 main_~i~0) (= |#NULL.offset| 0)) [2019-10-07 13:30:24,218 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 13:30:24,219 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 100#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 13:30:24,219 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 96#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond) (exists ((|v_main_~#B~0.base_BEFORE_CALL_5| Int) (|v_main_~#A~0.base_BEFORE_CALL_5| Int) (v_prenex_10 Int) (v_prenex_9 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (= (select (select |#memory_int| |v_main_~#B~0.base_BEFORE_CALL_5|) 4096) (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_5|) 4096)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| v_prenex_9) 4096) (select (select |#memory_int| v_prenex_10) 4096))) (<= 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 13:30:24,219 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 81#(exists ((|v_main_~#B~0.base_BEFORE_CALL_5| Int) (|v_main_~#A~0.base_BEFORE_CALL_5| Int) (v_prenex_10 Int) (v_prenex_9 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (= (select (select |#memory_int| |v_main_~#B~0.base_BEFORE_CALL_5|) 4096) (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_5|) 4096)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| v_prenex_9) 4096) (select (select |#memory_int| v_prenex_10) 4096))) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-07 13:30:24,219 INFO L193 IcfgInterpreter]: Reachable states at location L4 satisfy 91#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond) (exists ((|v_main_~#B~0.base_BEFORE_CALL_5| Int) (|v_main_~#A~0.base_BEFORE_CALL_5| Int) (v_prenex_10 Int) (v_prenex_9 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (= (select (select |#memory_int| |v_main_~#B~0.base_BEFORE_CALL_5|) 4096) (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_5|) 4096)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| v_prenex_9) 4096) (select (select |#memory_int| v_prenex_10) 4096))) (<= 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 13:30:24,219 INFO L193 IcfgInterpreter]: Reachable states at location L3 satisfy 86#(and (exists ((|v_main_~#B~0.base_BEFORE_CALL_5| Int) (|v_main_~#A~0.base_BEFORE_CALL_5| Int) (v_prenex_10 Int) (v_prenex_9 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (= (select (select |#memory_int| |v_main_~#B~0.base_BEFORE_CALL_5|) 4096) (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_5|) 4096)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| v_prenex_9) 4096) (select (select |#memory_int| v_prenex_10) 4096))) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 13:30:24,220 INFO L193 IcfgInterpreter]: Reachable states at location L13-3 satisfy 71#(or (and (<= 0 main_~i~0) (= 0 |#NULL.base|) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (= 0 |main_~#A~0.offset|) (<= 0 |#NULL.offset|) (<= |main_~#B~0.offset| 0) (not (= 0 |main_~#A~0.base|)) (= |#length| (store (store |old(#length)| |main_~#A~0.base| 8192) |main_~#B~0.base| 8192)) (= |#valid| (store (store |old(#valid)| |main_~#A~0.base| 1) |main_~#B~0.base| 1)) (= (select |old(#valid)| |main_~#A~0.base|) 0) (<= 0 |main_~#A~0.offset|) (< |main_~#B~0.base| |#StackHeapBarrier|) (<= |#NULL.base| 0) (= (select (store |old(#valid)| |main_~#A~0.base| 1) |main_~#B~0.base|) 0) (not (= |main_~#B~0.base| 0)) (= 0 |main_~#B~0.offset|) (<= main_~i~0 0) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (<= 0 |main_~#B~0.offset|) (< |main_~#A~0.base| |#StackHeapBarrier|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0)) (and (= |#NULL.base| 0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (= |main_~#B~0.offset| 0) (= |main_~#A~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= |main_~#B~0.offset| 0) (<= 0 |main_~#B~0.offset|) (= |#NULL.offset| 0))) [2019-10-07 13:30:24,789 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 13:30:24,789 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49, 9] total 106 [2019-10-07 13:30:24,791 INFO L442 AbstractCegarLoop]: Interpolant automaton has 106 states [2019-10-07 13:30:24,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2019-10-07 13:30:24,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4681, Invalid=6449, Unknown=0, NotChecked=0, Total=11130 [2019-10-07 13:30:24,797 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 106 states. [2019-10-07 13:30:35,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:30:35,191 INFO L93 Difference]: Finished difference Result 110 states and 157 transitions. [2019-10-07 13:30:35,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2019-10-07 13:30:35,192 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 56 [2019-10-07 13:30:35,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:30:35,194 INFO L225 Difference]: With dead ends: 110 [2019-10-07 13:30:35,194 INFO L226 Difference]: Without dead ends: 105 [2019-10-07 13:30:35,202 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8014 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=14034, Invalid=28196, Unknown=0, NotChecked=0, Total=42230 [2019-10-07 13:30:35,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2019-10-07 13:30:35,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2019-10-07 13:30:35,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2019-10-07 13:30:35,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2019-10-07 13:30:35,219 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 56 [2019-10-07 13:30:35,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:30:35,220 INFO L462 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2019-10-07 13:30:35,220 INFO L463 AbstractCegarLoop]: Interpolant automaton has 106 states. [2019-10-07 13:30:35,220 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2019-10-07 13:30:35,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-10-07 13:30:35,223 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:30:35,223 INFO L385 BasicCegarLoop]: trace histogram [94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:30:35,438 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:30:35,439 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:30:35,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:30:35,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1960166051, now seen corresponding path program 6 times [2019-10-07 13:30:35,440 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:30:35,440 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:30:35,440 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:30:35,440 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:30:35,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:30:35,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:30:38,903 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:30:38,904 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:30:38,904 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:30:38,904 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 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 13:30:39,063 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-07 13:30:39,063 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-07 13:30:39,066 INFO L256 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 96 conjunts are in the unsatisfiable core [2019-10-07 13:30:39,073 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:30:39,114 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:30:39,114 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:30:49,373 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:30:49,374 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 13:30:49,375 INFO L162 IcfgInterpreter]: Started Sifa with 11 locations of interest [2019-10-07 13:30:49,375 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 13:30:49,376 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 13:30:49,376 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 13:30:49,376 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 13:30:49,414 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-07 13:30:49,538 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 34 for LOIs [2019-10-07 13:30:49,552 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-07 13:30:49,556 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 13:30:49,557 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 13:30:49,557 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 13:30:49,557 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 13:30:49,560 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 105#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 13:30:49,560 INFO L193 IcfgInterpreter]: Reachable states at location L17 satisfy 76#(and (= (select (select |#memory_int| |main_~#A~0.base|) (+ |main_~#A~0.offset| 4096)) |main_#t~mem2|) (= |#NULL.base| 0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~i~0) (<= |#NULL.base| 0) (= |main_#t~mem3| (select (select |#memory_int| |main_~#B~0.base|) (+ |main_~#B~0.offset| 4096))) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (not (< main_~i~0 2048)) (= |main_~#B~0.offset| 0) (= |main_~#A~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= |main_~#B~0.offset| 0) (<= 0 |main_~#B~0.offset|) (<= 2048 main_~i~0) (= |#NULL.offset| 0)) [2019-10-07 13:30:49,561 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 13:30:49,561 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 100#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 13:30:49,561 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 96#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_prenex_12 Int) (v_prenex_11 Int) (|v_main_~#B~0.base_BEFORE_CALL_6| Int) (|v_main_~#A~0.base_BEFORE_CALL_6| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| v_prenex_12) 4096) (select (select |#memory_int| v_prenex_11) 4096))) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (= (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_6|) 4096) (select (select |#memory_int| |v_main_~#B~0.base_BEFORE_CALL_6|) 4096)) (<= 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 13:30:49,561 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 81#(exists ((v_prenex_12 Int) (v_prenex_11 Int) (|v_main_~#B~0.base_BEFORE_CALL_6| Int) (|v_main_~#A~0.base_BEFORE_CALL_6| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| v_prenex_12) 4096) (select (select |#memory_int| v_prenex_11) 4096))) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (= (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_6|) 4096) (select (select |#memory_int| |v_main_~#B~0.base_BEFORE_CALL_6|) 4096)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-07 13:30:49,562 INFO L193 IcfgInterpreter]: Reachable states at location L4 satisfy 91#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_prenex_12 Int) (v_prenex_11 Int) (|v_main_~#B~0.base_BEFORE_CALL_6| Int) (|v_main_~#A~0.base_BEFORE_CALL_6| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| v_prenex_12) 4096) (select (select |#memory_int| v_prenex_11) 4096))) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (= (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_6|) 4096) (select (select |#memory_int| |v_main_~#B~0.base_BEFORE_CALL_6|) 4096)) (<= 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 13:30:49,563 INFO L193 IcfgInterpreter]: Reachable states at location L3 satisfy 86#(and (exists ((v_prenex_12 Int) (v_prenex_11 Int) (|v_main_~#B~0.base_BEFORE_CALL_6| Int) (|v_main_~#A~0.base_BEFORE_CALL_6| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| v_prenex_12) 4096) (select (select |#memory_int| v_prenex_11) 4096))) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (= (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_6|) 4096) (select (select |#memory_int| |v_main_~#B~0.base_BEFORE_CALL_6|) 4096)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 13:30:49,563 INFO L193 IcfgInterpreter]: Reachable states at location L13-3 satisfy 71#(and (or (and (= |#NULL.base| 0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~i~0) (= |main_~#B~0.offset| 0) (= |main_~#A~0.offset| 0) (<= 0 |main_~#B~0.offset|) (= |#NULL.offset| 0)) (and (<= 0 main_~i~0) (= 0 |#NULL.base|) (= 0 |main_~#A~0.offset|) (not (= 0 |main_~#A~0.base|)) (= |#length| (store (store |old(#length)| |main_~#A~0.base| 8192) |main_~#B~0.base| 8192)) (= |#valid| (store (store |old(#valid)| |main_~#A~0.base| 1) |main_~#B~0.base| 1)) (= (select |old(#valid)| |main_~#A~0.base|) 0) (<= 0 |main_~#A~0.offset|) (< |main_~#B~0.base| |#StackHeapBarrier|) (= (select (store |old(#valid)| |main_~#A~0.base| 1) |main_~#B~0.base|) 0) (not (= |main_~#B~0.base| 0)) (= 0 |main_~#B~0.offset|) (<= main_~i~0 0) (= 0 (select |old(#valid)| 0)) (<= 0 |main_~#B~0.offset|) (< |main_~#A~0.base| |#StackHeapBarrier|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= |main_~#B~0.offset| 0)) [2019-10-07 13:30:50,508 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 13:30:50,508 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97, 9] total 202 [2019-10-07 13:30:50,510 INFO L442 AbstractCegarLoop]: Interpolant automaton has 202 states [2019-10-07 13:30:50,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 202 interpolants. [2019-10-07 13:30:50,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18553, Invalid=22049, Unknown=0, NotChecked=0, Total=40602 [2019-10-07 13:30:50,516 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 202 states. [2019-10-07 13:31:17,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:31:17,116 INFO L93 Difference]: Finished difference Result 206 states and 301 transitions. [2019-10-07 13:31:17,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2019-10-07 13:31:17,116 INFO L78 Accepts]: Start accepts. Automaton has 202 states. Word has length 104 [2019-10-07 13:31:17,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:31:17,119 INFO L225 Difference]: With dead ends: 206 [2019-10-07 13:31:17,119 INFO L226 Difference]: Without dead ends: 201 [2019-10-07 13:31:17,124 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 604 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 396 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27574 ImplicationChecksByTransitivity, 39.7s TimeCoverageRelationStatistics Valid=55650, Invalid=102356, Unknown=0, NotChecked=0, Total=158006 [2019-10-07 13:31:17,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2019-10-07 13:31:17,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2019-10-07 13:31:17,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2019-10-07 13:31:17,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 201 transitions. [2019-10-07 13:31:17,157 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 201 transitions. Word has length 104 [2019-10-07 13:31:17,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:31:17,157 INFO L462 AbstractCegarLoop]: Abstraction has 201 states and 201 transitions. [2019-10-07 13:31:17,157 INFO L463 AbstractCegarLoop]: Interpolant automaton has 202 states. [2019-10-07 13:31:17,158 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 201 transitions. [2019-10-07 13:31:17,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2019-10-07 13:31:17,161 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:31:17,161 INFO L385 BasicCegarLoop]: trace histogram [190, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:31:17,365 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:31:17,366 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:31:17,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:31:17,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1748017827, now seen corresponding path program 7 times [2019-10-07 13:31:17,367 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:31:17,367 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:31:17,368 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:31:17,368 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:31:17,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:31:17,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:31:30,328 INFO L134 CoverageAnalysis]: Checked inductivity of 18145 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:31:30,328 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:31:30,328 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:31:30,328 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 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 13:31:30,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:31:30,619 INFO L256 TraceCheckSpWp]: Trace formula consists of 1196 conjuncts, 192 conjunts are in the unsatisfiable core [2019-10-07 13:31:30,630 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:31:30,742 INFO L134 CoverageAnalysis]: Checked inductivity of 18145 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:31:30,742 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:32:08,511 INFO L134 CoverageAnalysis]: Checked inductivity of 18145 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:32:08,512 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 13:32:08,513 INFO L162 IcfgInterpreter]: Started Sifa with 11 locations of interest [2019-10-07 13:32:08,513 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 13:32:08,514 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 13:32:08,514 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 13:32:08,516 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 13:32:08,540 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-07 13:32:08,653 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 34 for LOIs [2019-10-07 13:32:08,657 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-07 13:32:08,659 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 13:32:08,659 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 13:32:08,659 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 13:32:08,660 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 13:32:08,660 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 105#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 13:32:08,660 INFO L193 IcfgInterpreter]: Reachable states at location L17 satisfy 76#(and (= (select (select |#memory_int| |main_~#A~0.base|) (+ |main_~#A~0.offset| 4096)) |main_#t~mem2|) (= |#NULL.base| 0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~i~0) (<= |#NULL.base| 0) (= |main_#t~mem3| (select (select |#memory_int| |main_~#B~0.base|) (+ |main_~#B~0.offset| 4096))) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (not (< main_~i~0 2048)) (= |main_~#B~0.offset| 0) (= |main_~#A~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= |main_~#B~0.offset| 0) (<= 0 |main_~#B~0.offset|) (<= 2048 main_~i~0) (= |#NULL.offset| 0)) [2019-10-07 13:32:08,660 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 13:32:08,660 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 100#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 13:32:08,660 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 96#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_main_~#B~0.base_BEFORE_CALL_7| Int) (v_prenex_14 Int) (v_prenex_13 Int) (|v_main_~#A~0.base_BEFORE_CALL_7| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (= (select (select |#memory_int| v_prenex_14) 4096) (select (select |#memory_int| v_prenex_13) 4096)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (= (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_7|) 4096) (select (select |#memory_int| |v_main_~#B~0.base_BEFORE_CALL_7|) 4096))) (= |#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 13:32:08,660 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 81#(exists ((|v_main_~#B~0.base_BEFORE_CALL_7| Int) (v_prenex_14 Int) (v_prenex_13 Int) (|v_main_~#A~0.base_BEFORE_CALL_7| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (= (select (select |#memory_int| v_prenex_14) 4096) (select (select |#memory_int| v_prenex_13) 4096)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (= (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_7|) 4096) (select (select |#memory_int| |v_main_~#B~0.base_BEFORE_CALL_7|) 4096))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-07 13:32:08,661 INFO L193 IcfgInterpreter]: Reachable states at location L4 satisfy 91#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_main_~#B~0.base_BEFORE_CALL_7| Int) (v_prenex_14 Int) (v_prenex_13 Int) (|v_main_~#A~0.base_BEFORE_CALL_7| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (= (select (select |#memory_int| v_prenex_14) 4096) (select (select |#memory_int| v_prenex_13) 4096)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (= (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_7|) 4096) (select (select |#memory_int| |v_main_~#B~0.base_BEFORE_CALL_7|) 4096))) (= |#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 13:32:08,661 INFO L193 IcfgInterpreter]: Reachable states at location L3 satisfy 86#(and (exists ((|v_main_~#B~0.base_BEFORE_CALL_7| Int) (v_prenex_14 Int) (v_prenex_13 Int) (|v_main_~#A~0.base_BEFORE_CALL_7| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (= (select (select |#memory_int| v_prenex_14) 4096) (select (select |#memory_int| v_prenex_13) 4096)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (= (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_7|) 4096) (select (select |#memory_int| |v_main_~#B~0.base_BEFORE_CALL_7|) 4096))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 13:32:08,661 INFO L193 IcfgInterpreter]: Reachable states at location L13-3 satisfy 71#(and (or (and (= |#NULL.base| 0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~i~0) (= |main_~#B~0.offset| 0) (= |main_~#A~0.offset| 0) (<= 0 |main_~#B~0.offset|) (= |#NULL.offset| 0)) (and (<= 0 main_~i~0) (= 0 |#NULL.base|) (= 0 |main_~#A~0.offset|) (not (= 0 |main_~#A~0.base|)) (= |#length| (store (store |old(#length)| |main_~#A~0.base| 8192) |main_~#B~0.base| 8192)) (= |#valid| (store (store |old(#valid)| |main_~#A~0.base| 1) |main_~#B~0.base| 1)) (= (select |old(#valid)| |main_~#A~0.base|) 0) (<= 0 |main_~#A~0.offset|) (< |main_~#B~0.base| |#StackHeapBarrier|) (= (select (store |old(#valid)| |main_~#A~0.base| 1) |main_~#B~0.base|) 0) (not (= |main_~#B~0.base| 0)) (= 0 |main_~#B~0.offset|) (<= main_~i~0 0) (= 0 (select |old(#valid)| 0)) (<= 0 |main_~#B~0.offset|) (< |main_~#A~0.base| |#StackHeapBarrier|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= |main_~#B~0.offset| 0)) [2019-10-07 13:32:10,029 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 13:32:10,030 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [193, 193, 193, 9] total 394 [2019-10-07 13:32:10,031 INFO L442 AbstractCegarLoop]: Interpolant automaton has 394 states [2019-10-07 13:32:10,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 394 interpolants. [2019-10-07 13:32:10,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73945, Invalid=80897, Unknown=0, NotChecked=0, Total=154842 [2019-10-07 13:32:10,047 INFO L87 Difference]: Start difference. First operand 201 states and 201 transitions. Second operand 394 states. [2019-10-07 13:33:48,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:33:48,300 INFO L93 Difference]: Finished difference Result 398 states and 589 transitions. [2019-10-07 13:33:48,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 393 states. [2019-10-07 13:33:48,304 INFO L78 Accepts]: Start accepts. Automaton has 394 states. Word has length 200 [2019-10-07 13:33:48,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:33:48,308 INFO L225 Difference]: With dead ends: 398 [2019-10-07 13:33:48,308 INFO L226 Difference]: Without dead ends: 393 [2019-10-07 13:33:48,322 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 1180 GetRequests, 400 SyntacticMatches, 0 SemanticMatches, 780 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101254 ImplicationChecksByTransitivity, 144.5s TimeCoverageRelationStatistics Valid=221826, Invalid=388916, Unknown=0, NotChecked=0, Total=610742 [2019-10-07 13:33:48,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2019-10-07 13:33:48,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2019-10-07 13:33:48,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2019-10-07 13:33:48,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 393 transitions. [2019-10-07 13:33:48,377 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 393 transitions. Word has length 200 [2019-10-07 13:33:48,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:33:48,378 INFO L462 AbstractCegarLoop]: Abstraction has 393 states and 393 transitions. [2019-10-07 13:33:48,378 INFO L463 AbstractCegarLoop]: Interpolant automaton has 394 states. [2019-10-07 13:33:48,378 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 393 transitions. [2019-10-07 13:33:48,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2019-10-07 13:33:48,386 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:33:48,386 INFO L385 BasicCegarLoop]: trace histogram [382, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:33:48,591 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:33:48,592 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:33:48,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:33:48,593 INFO L82 PathProgramCache]: Analyzing trace with hash 258368163, now seen corresponding path program 8 times [2019-10-07 13:33:48,593 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:33:48,593 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:33:48,594 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:33:48,594 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:33:48,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:33:50,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:34:40,077 INFO L134 CoverageAnalysis]: Checked inductivity of 73153 backedges. 0 proven. 73153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:34:40,078 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:34:40,078 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:34:40,078 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 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