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/reducercommutativity/max10-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:20:15,068 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:20:15,071 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:20:15,091 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:20:15,091 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:20:15,093 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:20:15,095 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:20:15,099 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:20:15,101 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:20:15,102 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:20:15,103 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:20:15,104 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:20:15,104 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:20:15,105 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:20:15,107 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:20:15,108 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:20:15,109 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:20:15,110 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:20:15,112 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:20:15,114 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:20:15,115 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:20:15,117 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:20:15,118 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:20:15,119 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:20:15,124 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 23:20:15,135 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:20:15,139 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:20:15,140 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:20:15,141 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 [2019-10-13 23:20:15,163 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:20:15,164 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:20:15,166 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:20:15,166 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:20:15,167 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:20:15,167 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:20:15,167 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:20:15,167 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:20:15,167 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:20:15,168 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:20:15,169 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:20:15,169 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:20:15,169 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:20:15,170 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:20:15,170 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:20:15,170 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:20:15,170 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:20:15,171 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:20:15,171 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:20:15,171 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:20:15,172 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:20:15,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:20:15,172 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:20:15,172 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:20:15,173 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:20:15,173 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:20:15,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:20:15,173 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:20:15,173 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 [2019-10-13 23:20:15,463 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:20:15,477 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:20:15,480 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:20:15,482 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:20:15,482 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:20:15,483 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/max10-1.i [2019-10-13 23:20:15,557 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9745c2975/bc995f3d0f7d4d8cb7e49ddcbc87ba1f/FLAG572c3885f [2019-10-13 23:20:16,040 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:20:16,042 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/max10-1.i [2019-10-13 23:20:16,049 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9745c2975/bc995f3d0f7d4d8cb7e49ddcbc87ba1f/FLAG572c3885f [2019-10-13 23:20:16,427 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9745c2975/bc995f3d0f7d4d8cb7e49ddcbc87ba1f [2019-10-13 23:20:16,437 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:20:16,439 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:20:16,440 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:20:16,440 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:20:16,443 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:20:16,444 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:20:16" (1/1) ... [2019-10-13 23:20:16,447 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d534ca9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:20:16, skipping insertion in model container [2019-10-13 23:20:16,447 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:20:16" (1/1) ... [2019-10-13 23:20:16,455 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:20:16,473 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:20:16,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:20:16,656 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:20:16,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:20:16,692 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:20:16,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:20:16 WrapperNode [2019-10-13 23:20:16,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:20:16,693 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:20:16,694 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:20:16,694 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:20:16,788 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:20:16" (1/1) ... [2019-10-13 23:20:16,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:20:16" (1/1) ... [2019-10-13 23:20:16,797 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:20:16" (1/1) ... [2019-10-13 23:20:16,797 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:20:16" (1/1) ... [2019-10-13 23:20:16,821 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:20:16" (1/1) ... [2019-10-13 23:20:16,825 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:20:16" (1/1) ... [2019-10-13 23:20:16,827 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:20:16" (1/1) ... [2019-10-13 23:20:16,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:20:16,830 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:20:16,830 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:20:16,830 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:20:16,831 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:20:16" (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 [2019-10-13 23:20:16,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:20:16,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:20:16,899 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2019-10-13 23:20:16,899 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:20:16,899 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:20:16,899 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:20:16,900 INFO L130 BoogieDeclarations]: Found specification of procedure max [2019-10-13 23:20:16,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:20:16,900 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:20:16,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:20:16,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:20:16,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:20:16,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:20:16,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:20:17,348 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:20:17,348 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-13 23:20:17,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:20:17 BoogieIcfgContainer [2019-10-13 23:20:17,350 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:20:17,351 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:20:17,351 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:20:17,354 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:20:17,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:20:16" (1/3) ... [2019-10-13 23:20:17,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b0b57eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:20:17, skipping insertion in model container [2019-10-13 23:20:17,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:20:16" (2/3) ... [2019-10-13 23:20:17,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b0b57eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:20:17, skipping insertion in model container [2019-10-13 23:20:17,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:20:17" (3/3) ... [2019-10-13 23:20:17,358 INFO L109 eAbstractionObserver]: Analyzing ICFG max10-1.i [2019-10-13 23:20:17,366 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:20:17,373 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:20:17,384 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:20:17,408 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:20:17,409 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:20:17,409 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:20:17,409 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:20:17,409 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:20:17,409 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:20:17,409 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:20:17,409 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:20:17,426 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-10-13 23:20:17,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-13 23:20:17,433 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:20:17,434 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:20:17,436 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:20:17,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:20:17,441 INFO L82 PathProgramCache]: Analyzing trace with hash 855740909, now seen corresponding path program 1 times [2019-10-13 23:20:17,449 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:20:17,449 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466018823] [2019-10-13 23:20:17,450 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:17,450 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:17,450 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:20:17,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:20:17,659 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-13 23:20:17,660 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466018823] [2019-10-13 23:20:17,661 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:20:17,661 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:20:17,662 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455830116] [2019-10-13 23:20:17,671 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:20:17,673 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:20:17,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:20:17,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:20:17,696 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2019-10-13 23:20:17,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:20:17,750 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2019-10-13 23:20:17,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:20:17,752 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-10-13 23:20:17,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:20:17,765 INFO L225 Difference]: With dead ends: 41 [2019-10-13 23:20:17,765 INFO L226 Difference]: Without dead ends: 20 [2019-10-13 23:20:17,774 INFO L600 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 [2019-10-13 23:20:17,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-10-13 23:20:17,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-10-13 23:20:17,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-10-13 23:20:17,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2019-10-13 23:20:17,838 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 24 [2019-10-13 23:20:17,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:20:17,838 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2019-10-13 23:20:17,839 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:20:17,840 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2019-10-13 23:20:17,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-13 23:20:17,843 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:20:17,844 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:20:17,845 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:20:17,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:20:17,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1075349738, now seen corresponding path program 1 times [2019-10-13 23:20:17,847 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:20:17,847 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280176749] [2019-10-13 23:20:17,848 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:17,848 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:17,848 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:20:17,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:20:17,973 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 23:20:17,974 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280176749] [2019-10-13 23:20:17,975 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353330568] [2019-10-13 23:20:17,975 INFO L94 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 [2019-10-13 23:20:18,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:20:18,070 INFO L256 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 23:20:18,077 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:20:18,110 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 23:20:18,111 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:20:18,167 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 23:20:18,168 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:20:18,168 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2019-10-13 23:20:18,169 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473449139] [2019-10-13 23:20:18,171 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:20:18,172 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:20:18,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:20:18,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:20:18,173 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 3 states. [2019-10-13 23:20:18,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:20:18,192 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2019-10-13 23:20:18,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:20:18,193 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2019-10-13 23:20:18,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:20:18,194 INFO L225 Difference]: With dead ends: 33 [2019-10-13 23:20:18,194 INFO L226 Difference]: Without dead ends: 21 [2019-10-13 23:20:18,196 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:20:18,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-10-13 23:20:18,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-10-13 23:20:18,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-10-13 23:20:18,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2019-10-13 23:20:18,209 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 25 [2019-10-13 23:20:18,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:20:18,210 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2019-10-13 23:20:18,210 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:20:18,212 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2019-10-13 23:20:18,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-10-13 23:20:18,215 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:20:18,215 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:20:18,420 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:20:18,421 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:20:18,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:20:18,422 INFO L82 PathProgramCache]: Analyzing trace with hash 447698074, now seen corresponding path program 1 times [2019-10-13 23:20:18,422 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:20:18,423 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154580101] [2019-10-13 23:20:18,423 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:18,423 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:18,423 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:20:18,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:20:18,548 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-13 23:20:18,549 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154580101] [2019-10-13 23:20:18,549 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:20:18,549 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:20:18,549 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837506325] [2019-10-13 23:20:18,550 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:20:18,551 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:20:18,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:20:18,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:20:18,553 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 3 states. [2019-10-13 23:20:18,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:20:18,571 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2019-10-13 23:20:18,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:20:18,573 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2019-10-13 23:20:18,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:20:18,574 INFO L225 Difference]: With dead ends: 31 [2019-10-13 23:20:18,574 INFO L226 Difference]: Without dead ends: 22 [2019-10-13 23:20:18,575 INFO L600 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 [2019-10-13 23:20:18,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-10-13 23:20:18,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-10-13 23:20:18,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-10-13 23:20:18,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2019-10-13 23:20:18,581 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 28 [2019-10-13 23:20:18,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:20:18,583 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2019-10-13 23:20:18,583 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:20:18,583 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2019-10-13 23:20:18,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-13 23:20:18,584 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:20:18,585 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:20:18,585 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:20:18,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:20:18,585 INFO L82 PathProgramCache]: Analyzing trace with hash -69054062, now seen corresponding path program 1 times [2019-10-13 23:20:18,586 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:20:18,586 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252135438] [2019-10-13 23:20:18,586 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:18,586 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:18,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:20:18,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:20:18,704 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-13 23:20:18,705 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252135438] [2019-10-13 23:20:18,705 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300768467] [2019-10-13 23:20:18,706 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:20:18,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:20:18,792 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 23:20:18,796 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:20:18,822 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-13 23:20:18,822 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:20:18,873 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-13 23:20:18,874 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1952335567] [2019-10-13 23:20:18,929 INFO L162 IcfgInterpreter]: Started Sifa with 19 locations of interest [2019-10-13 23:20:18,930 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:20:18,938 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:20:18,947 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:20:18,948 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:20:19,161 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 23:20:21,273 INFO L199 IcfgInterpreter]: Interpreting procedure max with input of size 1 for LOIs [2019-10-13 23:20:21,336 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 23:20:21,341 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 23:20:21,342 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 23:20:21,342 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 640#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 23:20:21,342 INFO L193 IcfgInterpreter]: Reachable states at location maxEXIT satisfy 636#(and (not (< max_~i~0 10)) (<= 0 max_~i~0) (= (ite (<= (mod max_~ret~0 4294967296) 2147483647) (mod max_~ret~0 4294967296) (+ (mod max_~ret~0 4294967296) (- 4294967296))) |max_#res|) (<= 10 max_~i~0)) [2019-10-13 23:20:21,343 INFO L193 IcfgInterpreter]: Reachable states at location L36-1 satisfy 467#true [2019-10-13 23:20:21,343 INFO L193 IcfgInterpreter]: Reachable states at location L36 satisfy 510#(and (not (< main_~i~2 9)) (<= 9 main_~i~2) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)) [2019-10-13 23:20:21,343 INFO L193 IcfgInterpreter]: Reachable states at location L9-3 satisfy 631#(<= 0 max_~i~0) [2019-10-13 23:20:21,343 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)) [2019-10-13 23:20:21,345 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)) [2019-10-13 23:20:21,345 INFO L193 IcfgInterpreter]: Reachable states at location L27 satisfy 108#(or (exists ((v_max_~ret~0_BEFORE_RETURN_1 Int) (v_prenex_1 Int)) (or (and (<= (mod v_max_~ret~0_BEFORE_RETURN_1 4294967296) 2147483647) (= |main_#t~ret6| (mod v_max_~ret~0_BEFORE_RETURN_1 4294967296)) (not (< main_~i~1 10))) (and (= (+ (mod v_prenex_1 4294967296) (- 4294967296)) |main_#t~ret6|) (not (< main_~i~1 10)) (not (<= (mod v_prenex_1 4294967296) 2147483647))))) (exists ((v_prenex_2 Int) (v_max_~ret~0_BEFORE_RETURN_2 Int)) (or (and (<= (mod v_max_~ret~0_BEFORE_RETURN_2 4294967296) 2147483647) (not (< main_~i~1 10)) (= (mod v_max_~ret~0_BEFORE_RETURN_2 4294967296) |main_#t~ret6|)) (and (not (<= (mod v_prenex_2 4294967296) 2147483647)) (= (+ (mod v_prenex_2 4294967296) (- 4294967296)) |main_#t~ret6|) (not (< main_~i~1 10)))))) [2019-10-13 23:20:21,346 INFO L193 IcfgInterpreter]: Reachable states at location L38 satisfy 368#true [2019-10-13 23:20:21,347 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 645#(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)) [2019-10-13 23:20:21,349 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 23:20:21,349 INFO L193 IcfgInterpreter]: Reachable states at location L39 satisfy 301#true [2019-10-13 23:20:21,349 INFO L193 IcfgInterpreter]: Reachable states at location maxENTRY satisfy 589#true [2019-10-13 23:20:21,350 INFO L193 IcfgInterpreter]: Reachable states at location L30-1 satisfy 575#true [2019-10-13 23:20:21,350 INFO L193 IcfgInterpreter]: Reachable states at location L32-3 satisfy 548#true [2019-10-13 23:20:21,350 INFO L193 IcfgInterpreter]: Reachable states at location L23-4 satisfy 73#(and (<= 10 main_~i~1) (not (< main_~i~1 10))) [2019-10-13 23:20:21,350 INFO L193 IcfgInterpreter]: Reachable states at location L30 satisfy 580#(exists ((v_prenex_2 Int) (v_max_~ret~0_BEFORE_RETURN_1 Int) (v_max_~ret~0_BEFORE_RETURN_2 Int) (v_prenex_1 Int)) (or (and (not (<= (mod v_prenex_2 4294967296) 2147483647)) (<= main_~ret~1 2147483647) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (= (+ (mod v_prenex_2 4294967296) (- 4294967296)) main_~ret~1) (not (< main_~i~1 10)) (<= 0 (+ main_~ret~1 2147483648))) (and (<= (mod v_max_~ret~0_BEFORE_RETURN_2 4294967296) 2147483647) (<= main_~ret~1 2147483647) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (= (mod v_max_~ret~0_BEFORE_RETURN_2 4294967296) main_~ret~1) (not (< main_~i~1 10)) (<= 0 (+ main_~ret~1 2147483648))) (and (<= (mod v_max_~ret~0_BEFORE_RETURN_1 4294967296) 2147483647) (<= main_~ret~1 2147483647) (= main_~ret~1 (mod v_max_~ret~0_BEFORE_RETURN_1 4294967296)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (not (< main_~i~1 10)) (<= 0 (+ main_~ret~1 2147483648))) (and (<= main_~ret~1 2147483647) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (= main_~ret~1 (+ (mod v_prenex_1 4294967296) (- 4294967296))) (not (< main_~i~1 10)) (not (<= (mod v_prenex_1 4294967296) 2147483647)) (<= 0 (+ main_~ret~1 2147483648))))) [2019-10-13 23:20:21,350 INFO L193 IcfgInterpreter]: Reachable states at location L23-3 satisfy 68#true [2019-10-13 23:20:21,351 INFO L193 IcfgInterpreter]: Reachable states at location mainErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 222#(or (and (exists ((v_prenex_29 Int) (v_prenex_30 Int) (v_max_~ret~0_BEFORE_RETURN_5 Int) (v_max_~ret~0_BEFORE_RETURN_6 Int)) (or (and (not (<= (mod v_prenex_29 4294967296) 2147483647)) (not (< main_~i~2 9)) (= main_~ret5~0 (+ (mod v_prenex_29 4294967296) (- 4294967296))) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)) (and (= (+ (mod v_prenex_30 4294967296) (- 4294967296)) main_~ret5~0) (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (not (<= (mod v_prenex_30 4294967296) 2147483647)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)) (and (= main_~ret5~0 (mod v_max_~ret~0_BEFORE_RETURN_6 4294967296)) (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0) (<= (mod v_max_~ret~0_BEFORE_RETURN_6 4294967296) 2147483647)) (and (<= (mod v_max_~ret~0_BEFORE_RETURN_5 4294967296) 2147483647) (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (mod v_max_~ret~0_BEFORE_RETURN_5 4294967296) main_~ret5~0) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)))) (not (= main_~ret~1 main_~ret5~0))) (and (not (= main_~ret~1 main_~ret2~0)) (exists ((v_prenex_29 Int) (v_prenex_30 Int) (v_max_~ret~0_BEFORE_RETURN_5 Int) (v_max_~ret~0_BEFORE_RETURN_6 Int)) (or (and (not (<= (mod v_prenex_29 4294967296) 2147483647)) (not (< main_~i~2 9)) (= main_~ret5~0 (+ (mod v_prenex_29 4294967296) (- 4294967296))) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)) (and (= (+ (mod v_prenex_30 4294967296) (- 4294967296)) main_~ret5~0) (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (not (<= (mod v_prenex_30 4294967296) 2147483647)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)) (and (= main_~ret5~0 (mod v_max_~ret~0_BEFORE_RETURN_6 4294967296)) (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0) (<= (mod v_max_~ret~0_BEFORE_RETURN_6 4294967296) 2147483647)) (and (<= (mod v_max_~ret~0_BEFORE_RETURN_5 4294967296) 2147483647) (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (mod v_max_~ret~0_BEFORE_RETURN_5 4294967296) main_~ret5~0) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)))))) [2019-10-13 23:20:21,710 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 23:20:21,710 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 11] total 17 [2019-10-13 23:20:21,711 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043186847] [2019-10-13 23:20:21,713 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-13 23:20:21,714 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:20:21,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-13 23:20:21,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2019-10-13 23:20:21,716 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 18 states. [2019-10-13 23:20:22,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:20:22,353 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2019-10-13 23:20:22,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-13 23:20:22,354 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 29 [2019-10-13 23:20:22,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:20:22,355 INFO L225 Difference]: With dead ends: 40 [2019-10-13 23:20:22,355 INFO L226 Difference]: Without dead ends: 25 [2019-10-13 23:20:22,357 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=133, Invalid=737, Unknown=0, NotChecked=0, Total=870 [2019-10-13 23:20:22,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-10-13 23:20:22,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-10-13 23:20:22,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-10-13 23:20:22,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2019-10-13 23:20:22,365 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 29 [2019-10-13 23:20:22,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:20:22,365 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2019-10-13 23:20:22,365 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-13 23:20:22,365 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2019-10-13 23:20:22,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-13 23:20:22,366 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:20:22,367 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:20:22,575 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:20:22,576 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:20:22,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:20:22,577 INFO L82 PathProgramCache]: Analyzing trace with hash -493974743, now seen corresponding path program 2 times [2019-10-13 23:20:22,577 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:20:22,578 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797403723] [2019-10-13 23:20:22,578 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:22,578 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:22,579 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:20:22,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:20:22,666 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-13 23:20:22,666 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797403723] [2019-10-13 23:20:22,666 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685810114] [2019-10-13 23:20:22,667 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:20:22,747 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-13 23:20:22,747 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 23:20:22,749 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 23:20:22,755 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:20:22,794 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 23:20:22,794 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:20:22,834 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 23:20:22,835 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1995759393] [2019-10-13 23:20:22,841 INFO L162 IcfgInterpreter]: Started Sifa with 19 locations of interest [2019-10-13 23:20:22,841 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:20:22,842 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:20:22,842 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:20:22,843 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:20:22,882 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 23:20:24,404 INFO L199 IcfgInterpreter]: Interpreting procedure max with input of size 1 for LOIs [2019-10-13 23:20:24,443 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 23:20:24,453 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 23:20:24,453 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 23:20:24,454 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 656#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 23:20:24,454 INFO L193 IcfgInterpreter]: Reachable states at location maxEXIT satisfy 652#(and (not (< max_~i~0 10)) (<= 0 max_~i~0) (= (ite (<= (mod max_~ret~0 4294967296) 2147483647) (mod max_~ret~0 4294967296) (+ (mod max_~ret~0 4294967296) (- 4294967296))) |max_#res|) (<= 10 max_~i~0)) [2019-10-13 23:20:24,454 INFO L193 IcfgInterpreter]: Reachable states at location L36-1 satisfy 483#true [2019-10-13 23:20:24,454 INFO L193 IcfgInterpreter]: Reachable states at location L36 satisfy 526#(and (not (< main_~i~2 9)) (<= 9 main_~i~2) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)) [2019-10-13 23:20:24,455 INFO L193 IcfgInterpreter]: Reachable states at location L9-3 satisfy 647#(<= 0 max_~i~0) [2019-10-13 23:20:24,455 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)) [2019-10-13 23:20:24,455 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)) [2019-10-13 23:20:24,455 INFO L193 IcfgInterpreter]: Reachable states at location L27 satisfy 124#(or (exists ((v_prenex_196 Int) (v_max_~ret~0_BEFORE_RETURN_28 Int)) (or (and (<= (mod v_max_~ret~0_BEFORE_RETURN_28 4294967296) 2147483647) (= |main_#t~ret6| (mod v_max_~ret~0_BEFORE_RETURN_28 4294967296)) (not (< main_~i~1 10))) (and (not (<= (mod v_prenex_196 4294967296) 2147483647)) (= (+ (mod v_prenex_196 4294967296) (- 4294967296)) |main_#t~ret6|) (not (< main_~i~1 10))))) (exists ((v_prenex_195 Int) (v_max_~ret~0_BEFORE_RETURN_27 Int)) (or (and (not (<= (mod v_max_~ret~0_BEFORE_RETURN_27 4294967296) 2147483647)) (= (+ (mod v_max_~ret~0_BEFORE_RETURN_27 4294967296) (- 4294967296)) |main_#t~ret6|) (not (< main_~i~1 10))) (and (= (mod v_prenex_195 4294967296) |main_#t~ret6|) (<= (mod v_prenex_195 4294967296) 2147483647) (not (< main_~i~1 10)))))) [2019-10-13 23:20:24,456 INFO L193 IcfgInterpreter]: Reachable states at location L38 satisfy 384#true [2019-10-13 23:20:24,456 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 661#(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)) [2019-10-13 23:20:24,456 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 23:20:24,456 INFO L193 IcfgInterpreter]: Reachable states at location L39 satisfy 317#true [2019-10-13 23:20:24,456 INFO L193 IcfgInterpreter]: Reachable states at location maxENTRY satisfy 605#true [2019-10-13 23:20:24,456 INFO L193 IcfgInterpreter]: Reachable states at location L30-1 satisfy 591#true [2019-10-13 23:20:24,457 INFO L193 IcfgInterpreter]: Reachable states at location L32-3 satisfy 564#true [2019-10-13 23:20:24,457 INFO L193 IcfgInterpreter]: Reachable states at location L23-4 satisfy 73#(and (<= 10 main_~i~1) (not (< main_~i~1 10))) [2019-10-13 23:20:24,457 INFO L193 IcfgInterpreter]: Reachable states at location L30 satisfy 596#(exists ((v_prenex_196 Int) (v_prenex_195 Int) (v_max_~ret~0_BEFORE_RETURN_28 Int) (v_max_~ret~0_BEFORE_RETURN_27 Int)) (or (and (= main_~ret~1 (mod v_max_~ret~0_BEFORE_RETURN_28 4294967296)) (<= main_~ret~1 2147483647) (<= (mod v_max_~ret~0_BEFORE_RETURN_28 4294967296) 2147483647) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (not (< main_~i~1 10)) (<= 0 (+ main_~ret~1 2147483648))) (and (<= main_~ret~1 2147483647) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (= (mod v_prenex_195 4294967296) main_~ret~1) (<= (mod v_prenex_195 4294967296) 2147483647) (not (< main_~i~1 10)) (<= 0 (+ main_~ret~1 2147483648))) (and (= (+ (mod v_prenex_196 4294967296) (- 4294967296)) main_~ret~1) (not (<= (mod v_prenex_196 4294967296) 2147483647)) (<= main_~ret~1 2147483647) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (not (< main_~i~1 10)) (<= 0 (+ main_~ret~1 2147483648))) (and (<= main_~ret~1 2147483647) (not (<= (mod v_max_~ret~0_BEFORE_RETURN_27 4294967296) 2147483647)) (= (+ (mod v_max_~ret~0_BEFORE_RETURN_27 4294967296) (- 4294967296)) main_~ret~1) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (not (< main_~i~1 10)) (<= 0 (+ main_~ret~1 2147483648))))) [2019-10-13 23:20:24,458 INFO L193 IcfgInterpreter]: Reachable states at location L23-3 satisfy 68#true [2019-10-13 23:20:24,458 INFO L193 IcfgInterpreter]: Reachable states at location mainErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 238#(or (and (exists ((v_prenex_224 Int) (v_max_~ret~0_BEFORE_RETURN_32 Int) (v_max_~ret~0_BEFORE_RETURN_31 Int) (v_prenex_223 Int)) (or (and (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0) (<= (mod v_prenex_223 4294967296) 2147483647) (= (mod v_prenex_223 4294967296) main_~ret5~0)) (and (not (<= (mod v_max_~ret~0_BEFORE_RETURN_32 4294967296) 2147483647)) (= (+ (mod v_max_~ret~0_BEFORE_RETURN_32 4294967296) (- 4294967296)) main_~ret5~0) (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)) (and (= main_~ret5~0 (+ (mod v_max_~ret~0_BEFORE_RETURN_31 4294967296) (- 4294967296))) (not (<= (mod v_max_~ret~0_BEFORE_RETURN_31 4294967296) 2147483647)) (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)) (and (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (<= (mod v_prenex_224 4294967296) 2147483647) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0) (= main_~ret5~0 (mod v_prenex_224 4294967296))))) (not (= main_~ret~1 main_~ret5~0))) (and (not (= main_~ret~1 main_~ret2~0)) (exists ((v_prenex_224 Int) (v_max_~ret~0_BEFORE_RETURN_32 Int) (v_max_~ret~0_BEFORE_RETURN_31 Int) (v_prenex_223 Int)) (or (and (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0) (<= (mod v_prenex_223 4294967296) 2147483647) (= (mod v_prenex_223 4294967296) main_~ret5~0)) (and (not (<= (mod v_max_~ret~0_BEFORE_RETURN_32 4294967296) 2147483647)) (= (+ (mod v_max_~ret~0_BEFORE_RETURN_32 4294967296) (- 4294967296)) main_~ret5~0) (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)) (and (= main_~ret5~0 (+ (mod v_max_~ret~0_BEFORE_RETURN_31 4294967296) (- 4294967296))) (not (<= (mod v_max_~ret~0_BEFORE_RETURN_31 4294967296) 2147483647)) (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)) (and (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (<= (mod v_prenex_224 4294967296) 2147483647) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0) (= main_~ret5~0 (mod v_prenex_224 4294967296))))))) [2019-10-13 23:20:24,845 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 23:20:24,845 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4, 11] total 21 [2019-10-13 23:20:24,845 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745549757] [2019-10-13 23:20:24,846 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-10-13 23:20:24,847 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:20:24,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-10-13 23:20:24,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2019-10-13 23:20:24,847 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 22 states. [2019-10-13 23:20:27,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:20:27,741 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2019-10-13 23:20:27,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-13 23:20:27,741 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 32 [2019-10-13 23:20:27,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:20:27,742 INFO L225 Difference]: With dead ends: 44 [2019-10-13 23:20:27,743 INFO L226 Difference]: Without dead ends: 29 [2019-10-13 23:20:27,744 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=210, Invalid=1272, Unknown=0, NotChecked=0, Total=1482 [2019-10-13 23:20:27,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-10-13 23:20:27,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-10-13 23:20:27,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-13 23:20:27,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2019-10-13 23:20:27,751 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 32 [2019-10-13 23:20:27,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:20:27,751 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2019-10-13 23:20:27,751 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-10-13 23:20:27,752 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2019-10-13 23:20:27,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-10-13 23:20:27,753 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:20:27,753 INFO L380 BasicCegarLoop]: trace histogram [12, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:20:27,957 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:20:27,958 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:20:27,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:20:27,958 INFO L82 PathProgramCache]: Analyzing trace with hash 132820922, now seen corresponding path program 3 times [2019-10-13 23:20:27,959 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:20:27,959 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417199017] [2019-10-13 23:20:27,959 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:27,959 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:27,959 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:20:28,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:20:28,097 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 52 proven. 10 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-10-13 23:20:28,098 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417199017] [2019-10-13 23:20:28,098 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788606696] [2019-10-13 23:20:28,098 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:20:28,228 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-13 23:20:28,228 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 23:20:28,229 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 23:20:28,232 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:20:28,268 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 52 proven. 10 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-10-13 23:20:28,268 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:20:28,340 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-10-13 23:20:28,340 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [535830853] [2019-10-13 23:20:28,342 INFO L162 IcfgInterpreter]: Started Sifa with 19 locations of interest [2019-10-13 23:20:28,342 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:20:28,342 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:20:28,343 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:20:28,343 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:20:28,363 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 23:20:29,993 INFO L199 IcfgInterpreter]: Interpreting procedure max with input of size 1 for LOIs [2019-10-13 23:20:30,029 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 23:20:30,034 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 23:20:30,034 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 23:20:30,034 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 656#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 23:20:30,035 INFO L193 IcfgInterpreter]: Reachable states at location maxEXIT satisfy 652#(and (not (< max_~i~0 10)) (<= 0 max_~i~0) (= (ite (<= (mod max_~ret~0 4294967296) 2147483647) (mod max_~ret~0 4294967296) (+ (mod max_~ret~0 4294967296) (- 4294967296))) |max_#res|) (<= 10 max_~i~0)) [2019-10-13 23:20:30,035 INFO L193 IcfgInterpreter]: Reachable states at location L36-1 satisfy 483#true [2019-10-13 23:20:30,035 INFO L193 IcfgInterpreter]: Reachable states at location L36 satisfy 526#(and (not (< main_~i~2 9)) (<= 9 main_~i~2) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)) [2019-10-13 23:20:30,036 INFO L193 IcfgInterpreter]: Reachable states at location L9-3 satisfy 647#(<= 0 max_~i~0) [2019-10-13 23:20:30,036 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)) [2019-10-13 23:20:30,036 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)) [2019-10-13 23:20:30,037 INFO L193 IcfgInterpreter]: Reachable states at location L27 satisfy 124#(or (exists ((v_prenex_389 Int) (v_max_~ret~0_BEFORE_RETURN_53 Int)) (or (and (<= (mod v_prenex_389 4294967296) 2147483647) (= |main_#t~ret6| (mod v_prenex_389 4294967296)) (not (< main_~i~1 10))) (and (= (+ (mod v_max_~ret~0_BEFORE_RETURN_53 4294967296) (- 4294967296)) |main_#t~ret6|) (not (< main_~i~1 10)) (not (<= (mod v_max_~ret~0_BEFORE_RETURN_53 4294967296) 2147483647))))) (exists ((v_max_~ret~0_BEFORE_RETURN_54 Int) (v_prenex_390 Int)) (or (and (= (+ (mod v_prenex_390 4294967296) (- 4294967296)) |main_#t~ret6|) (not (<= (mod v_prenex_390 4294967296) 2147483647)) (not (< main_~i~1 10))) (and (= |main_#t~ret6| (mod v_max_~ret~0_BEFORE_RETURN_54 4294967296)) (not (< main_~i~1 10)) (<= (mod v_max_~ret~0_BEFORE_RETURN_54 4294967296) 2147483647))))) [2019-10-13 23:20:30,037 INFO L193 IcfgInterpreter]: Reachable states at location L38 satisfy 384#true [2019-10-13 23:20:30,037 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 661#(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)) [2019-10-13 23:20:30,038 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 23:20:30,038 INFO L193 IcfgInterpreter]: Reachable states at location L39 satisfy 317#true [2019-10-13 23:20:30,038 INFO L193 IcfgInterpreter]: Reachable states at location maxENTRY satisfy 605#true [2019-10-13 23:20:30,038 INFO L193 IcfgInterpreter]: Reachable states at location L30-1 satisfy 591#true [2019-10-13 23:20:30,039 INFO L193 IcfgInterpreter]: Reachable states at location L32-3 satisfy 564#true [2019-10-13 23:20:30,039 INFO L193 IcfgInterpreter]: Reachable states at location L23-4 satisfy 73#(and (<= 10 main_~i~1) (not (< main_~i~1 10))) [2019-10-13 23:20:30,039 INFO L193 IcfgInterpreter]: Reachable states at location L30 satisfy 596#(exists ((v_prenex_389 Int) (v_max_~ret~0_BEFORE_RETURN_54 Int) (v_max_~ret~0_BEFORE_RETURN_53 Int) (v_prenex_390 Int)) (or (and (<= main_~ret~1 2147483647) (= (+ (mod v_prenex_390 4294967296) (- 4294967296)) main_~ret~1) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (not (<= (mod v_prenex_390 4294967296) 2147483647)) (not (< main_~i~1 10)) (<= 0 (+ main_~ret~1 2147483648))) (and (<= main_~ret~1 2147483647) (= (mod v_prenex_389 4294967296) main_~ret~1) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (<= (mod v_prenex_389 4294967296) 2147483647) (not (< main_~i~1 10)) (<= 0 (+ main_~ret~1 2147483648))) (and (<= main_~ret~1 2147483647) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (= main_~ret~1 (mod v_max_~ret~0_BEFORE_RETURN_54 4294967296)) (<= (mod v_max_~ret~0_BEFORE_RETURN_54 4294967296) 2147483647) (not (< main_~i~1 10)) (<= 0 (+ main_~ret~1 2147483648))) (and (<= main_~ret~1 2147483647) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (= main_~ret~1 (+ (mod v_max_~ret~0_BEFORE_RETURN_53 4294967296) (- 4294967296))) (not (< main_~i~1 10)) (not (<= (mod v_max_~ret~0_BEFORE_RETURN_53 4294967296) 2147483647)) (<= 0 (+ main_~ret~1 2147483648))))) [2019-10-13 23:20:30,040 INFO L193 IcfgInterpreter]: Reachable states at location L23-3 satisfy 68#true [2019-10-13 23:20:30,040 INFO L193 IcfgInterpreter]: Reachable states at location mainErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 238#(or (and (not (= main_~ret~1 main_~ret2~0)) (exists ((v_max_~ret~0_BEFORE_RETURN_57 Int) (v_prenex_417 Int) (v_prenex_418 Int) (v_max_~ret~0_BEFORE_RETURN_58 Int)) (or (and (= main_~ret5~0 (mod v_prenex_418 4294967296)) (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0) (<= (mod v_prenex_418 4294967296) 2147483647)) (and (not (< main_~i~2 9)) (= (+ (mod v_max_~ret~0_BEFORE_RETURN_58 4294967296) (- 4294967296)) main_~ret5~0) (<= main_~ret5~0 2147483647) (not (<= (mod v_max_~ret~0_BEFORE_RETURN_58 4294967296) 2147483647)) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)) (and (= main_~ret5~0 (+ (mod v_prenex_417 4294967296) (- 4294967296))) (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0) (not (<= (mod v_prenex_417 4294967296) 2147483647))) (and (<= (mod v_max_~ret~0_BEFORE_RETURN_57 4294967296) 2147483647) (not (< main_~i~2 9)) (= (mod v_max_~ret~0_BEFORE_RETURN_57 4294967296) main_~ret5~0) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0))))) (and (exists ((v_max_~ret~0_BEFORE_RETURN_57 Int) (v_prenex_417 Int) (v_prenex_418 Int) (v_max_~ret~0_BEFORE_RETURN_58 Int)) (or (and (= main_~ret5~0 (mod v_prenex_418 4294967296)) (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0) (<= (mod v_prenex_418 4294967296) 2147483647)) (and (not (< main_~i~2 9)) (= (+ (mod v_max_~ret~0_BEFORE_RETURN_58 4294967296) (- 4294967296)) main_~ret5~0) (<= main_~ret5~0 2147483647) (not (<= (mod v_max_~ret~0_BEFORE_RETURN_58 4294967296) 2147483647)) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)) (and (= main_~ret5~0 (+ (mod v_prenex_417 4294967296) (- 4294967296))) (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0) (not (<= (mod v_prenex_417 4294967296) 2147483647))) (and (<= (mod v_max_~ret~0_BEFORE_RETURN_57 4294967296) 2147483647) (not (< main_~i~2 9)) (= (mod v_max_~ret~0_BEFORE_RETURN_57 4294967296) main_~ret5~0) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)))) (not (= main_~ret~1 main_~ret5~0)))) [2019-10-13 23:20:30,482 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 23:20:30,483 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 11] total 23 [2019-10-13 23:20:30,483 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544060156] [2019-10-13 23:20:30,484 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-10-13 23:20:30,484 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:20:30,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-10-13 23:20:30,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2019-10-13 23:20:30,485 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 24 states. [2019-10-13 23:20:31,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:20:31,515 INFO L93 Difference]: Finished difference Result 52 states and 67 transitions. [2019-10-13 23:20:31,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-10-13 23:20:31,516 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 42 [2019-10-13 23:20:31,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:20:31,517 INFO L225 Difference]: With dead ends: 52 [2019-10-13 23:20:31,517 INFO L226 Difference]: Without dead ends: 35 [2019-10-13 23:20:31,518 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=353, Invalid=1369, Unknown=0, NotChecked=0, Total=1722 [2019-10-13 23:20:31,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-10-13 23:20:31,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2019-10-13 23:20:31,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-10-13 23:20:31,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2019-10-13 23:20:31,526 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 42 [2019-10-13 23:20:31,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:20:31,527 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2019-10-13 23:20:31,527 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-10-13 23:20:31,527 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2019-10-13 23:20:31,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-10-13 23:20:31,530 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:20:31,532 INFO L380 BasicCegarLoop]: trace histogram [30, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:20:31,736 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:20:31,737 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:20:31,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:20:31,737 INFO L82 PathProgramCache]: Analyzing trace with hash 238611642, now seen corresponding path program 4 times [2019-10-13 23:20:31,737 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:20:31,738 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690301271] [2019-10-13 23:20:31,738 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:31,738 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:31,738 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:20:31,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:20:31,866 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 549 trivial. 0 not checked. [2019-10-13 23:20:31,866 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690301271] [2019-10-13 23:20:31,867 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562335245] [2019-10-13 23:20:31,867 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:20:32,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:20:32,022 INFO L256 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-13 23:20:32,035 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:20:32,090 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2019-10-13 23:20:32,090 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:20:32,167 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2019-10-13 23:20:32,167 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [155682949] [2019-10-13 23:20:32,170 INFO L162 IcfgInterpreter]: Started Sifa with 19 locations of interest [2019-10-13 23:20:32,170 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:20:32,171 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:20:32,171 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:20:32,171 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:20:32,195 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 23:20:33,704 INFO L199 IcfgInterpreter]: Interpreting procedure max with input of size 1 for LOIs [2019-10-13 23:20:33,731 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 23:20:33,735 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 23:20:33,736 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 23:20:33,736 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 640#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 23:20:33,736 INFO L193 IcfgInterpreter]: Reachable states at location maxEXIT satisfy 636#(and (not (< max_~i~0 10)) (<= 0 max_~i~0) (= (ite (<= (mod max_~ret~0 4294967296) 2147483647) (mod max_~ret~0 4294967296) (+ (mod max_~ret~0 4294967296) (- 4294967296))) |max_#res|) (<= 10 max_~i~0)) [2019-10-13 23:20:33,737 INFO L193 IcfgInterpreter]: Reachable states at location L36-1 satisfy 483#true [2019-10-13 23:20:33,737 INFO L193 IcfgInterpreter]: Reachable states at location L36 satisfy 526#(and (not (< main_~i~2 9)) (<= 9 main_~i~2) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)) [2019-10-13 23:20:33,737 INFO L193 IcfgInterpreter]: Reachable states at location L9-3 satisfy 631#(<= 0 max_~i~0) [2019-10-13 23:20:33,737 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)) [2019-10-13 23:20:33,738 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)) [2019-10-13 23:20:33,738 INFO L193 IcfgInterpreter]: Reachable states at location L27 satisfy 124#(or (exists ((v_max_~ret~0_BEFORE_RETURN_79 Int) (v_prenex_583 Int)) (or (and (= (+ (mod v_prenex_583 4294967296) (- 4294967296)) |main_#t~ret6|) (not (<= (mod v_prenex_583 4294967296) 2147483647)) (not (< main_~i~1 10))) (and (<= (mod v_max_~ret~0_BEFORE_RETURN_79 4294967296) 2147483647) (= (mod v_max_~ret~0_BEFORE_RETURN_79 4294967296) |main_#t~ret6|) (not (< main_~i~1 10))))) (exists ((v_prenex_584 Int) (v_max_~ret~0_BEFORE_RETURN_80 Int)) (or (and (<= (mod v_max_~ret~0_BEFORE_RETURN_80 4294967296) 2147483647) (= (mod v_max_~ret~0_BEFORE_RETURN_80 4294967296) |main_#t~ret6|) (not (< main_~i~1 10))) (and (= (+ (mod v_prenex_584 4294967296) (- 4294967296)) |main_#t~ret6|) (not (<= (mod v_prenex_584 4294967296) 2147483647)) (not (< main_~i~1 10)))))) [2019-10-13 23:20:33,738 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 645#(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)) [2019-10-13 23:20:33,739 INFO L193 IcfgInterpreter]: Reachable states at location L38 satisfy 384#true [2019-10-13 23:20:33,739 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 23:20:33,739 INFO L193 IcfgInterpreter]: Reachable states at location L39 satisfy 317#true [2019-10-13 23:20:33,740 INFO L193 IcfgInterpreter]: Reachable states at location maxENTRY satisfy 605#true [2019-10-13 23:20:33,740 INFO L193 IcfgInterpreter]: Reachable states at location L30-1 satisfy 591#true [2019-10-13 23:20:33,740 INFO L193 IcfgInterpreter]: Reachable states at location L32-3 satisfy 564#true [2019-10-13 23:20:33,740 INFO L193 IcfgInterpreter]: Reachable states at location L23-4 satisfy 73#(and (<= 10 main_~i~1) (not (< main_~i~1 10))) [2019-10-13 23:20:33,741 INFO L193 IcfgInterpreter]: Reachable states at location L30 satisfy 596#(exists ((v_max_~ret~0_BEFORE_RETURN_79 Int) (v_prenex_583 Int) (v_prenex_584 Int) (v_max_~ret~0_BEFORE_RETURN_80 Int)) (or (and (<= main_~ret~1 2147483647) (<= (mod v_max_~ret~0_BEFORE_RETURN_79 4294967296) 2147483647) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (= (mod v_max_~ret~0_BEFORE_RETURN_79 4294967296) main_~ret~1) (not (< main_~i~1 10)) (<= 0 (+ main_~ret~1 2147483648))) (and (<= main_~ret~1 2147483647) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (not (<= (mod v_prenex_584 4294967296) 2147483647)) (not (< main_~i~1 10)) (= main_~ret~1 (+ (mod v_prenex_584 4294967296) (- 4294967296))) (<= 0 (+ main_~ret~1 2147483648))) (and (<= main_~ret~1 2147483647) (= (+ (mod v_prenex_583 4294967296) (- 4294967296)) main_~ret~1) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (not (<= (mod v_prenex_583 4294967296) 2147483647)) (not (< main_~i~1 10)) (<= 0 (+ main_~ret~1 2147483648))) (and (= (mod v_max_~ret~0_BEFORE_RETURN_80 4294967296) main_~ret~1) (<= main_~ret~1 2147483647) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (<= (mod v_max_~ret~0_BEFORE_RETURN_80 4294967296) 2147483647) (not (< main_~i~1 10)) (<= 0 (+ main_~ret~1 2147483648))))) [2019-10-13 23:20:33,741 INFO L193 IcfgInterpreter]: Reachable states at location L23-3 satisfy 68#true [2019-10-13 23:20:33,742 INFO L193 IcfgInterpreter]: Reachable states at location mainErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 238#(or (and (not (= main_~ret~1 main_~ret2~0)) (exists ((v_prenex_611 Int) (v_prenex_612 Int) (v_max_~ret~0_BEFORE_RETURN_84 Int) (v_max_~ret~0_BEFORE_RETURN_83 Int)) (or (and (<= (mod v_prenex_611 4294967296) 2147483647) (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0) (= main_~ret5~0 (mod v_prenex_611 4294967296))) (and (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (<= (mod v_max_~ret~0_BEFORE_RETURN_84 4294967296) 2147483647) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0) (= main_~ret5~0 (mod v_max_~ret~0_BEFORE_RETURN_84 4294967296))) (and (= (+ (mod v_prenex_612 4294967296) (- 4294967296)) main_~ret5~0) (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0) (not (<= (mod v_prenex_612 4294967296) 2147483647))) (and (not (<= (mod v_max_~ret~0_BEFORE_RETURN_83 4294967296) 2147483647)) (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= main_~ret5~0 (+ (mod v_max_~ret~0_BEFORE_RETURN_83 4294967296) (- 4294967296))) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0))))) (and (exists ((v_prenex_611 Int) (v_prenex_612 Int) (v_max_~ret~0_BEFORE_RETURN_84 Int) (v_max_~ret~0_BEFORE_RETURN_83 Int)) (or (and (<= (mod v_prenex_611 4294967296) 2147483647) (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0) (= main_~ret5~0 (mod v_prenex_611 4294967296))) (and (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (<= (mod v_max_~ret~0_BEFORE_RETURN_84 4294967296) 2147483647) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0) (= main_~ret5~0 (mod v_max_~ret~0_BEFORE_RETURN_84 4294967296))) (and (= (+ (mod v_prenex_612 4294967296) (- 4294967296)) main_~ret5~0) (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0) (not (<= (mod v_prenex_612 4294967296) 2147483647))) (and (not (<= (mod v_max_~ret~0_BEFORE_RETURN_83 4294967296) 2147483647)) (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= main_~ret5~0 (+ (mod v_max_~ret~0_BEFORE_RETURN_83 4294967296) (- 4294967296))) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)))) (not (= main_~ret~1 main_~ret5~0)))) [2019-10-13 23:20:34,189 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 23:20:34,190 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 8, 11] total 24 [2019-10-13 23:20:34,190 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773565176] [2019-10-13 23:20:34,191 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-10-13 23:20:34,191 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:20:34,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-10-13 23:20:34,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2019-10-13 23:20:34,195 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 25 states. [2019-10-13 23:20:35,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:20:35,331 INFO L93 Difference]: Finished difference Result 65 states and 78 transitions. [2019-10-13 23:20:35,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-10-13 23:20:35,331 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 60 [2019-10-13 23:20:35,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:20:35,332 INFO L225 Difference]: With dead ends: 65 [2019-10-13 23:20:35,333 INFO L226 Difference]: Without dead ends: 41 [2019-10-13 23:20:35,334 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 159 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=298, Invalid=1682, Unknown=0, NotChecked=0, Total=1980 [2019-10-13 23:20:35,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-10-13 23:20:35,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2019-10-13 23:20:35,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-10-13 23:20:35,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2019-10-13 23:20:35,353 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 60 [2019-10-13 23:20:35,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:20:35,353 INFO L462 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2019-10-13 23:20:35,354 INFO L463 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-10-13 23:20:35,354 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2019-10-13 23:20:35,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-10-13 23:20:35,360 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:20:35,360 INFO L380 BasicCegarLoop]: trace histogram [30, 10, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:20:35,568 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:20:35,569 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:20:35,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:20:35,570 INFO L82 PathProgramCache]: Analyzing trace with hash -24325491, now seen corresponding path program 5 times [2019-10-13 23:20:35,570 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:20:35,570 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014097244] [2019-10-13 23:20:35,570 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:35,571 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:35,571 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:20:35,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:20:35,687 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2019-10-13 23:20:35,687 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014097244] [2019-10-13 23:20:35,687 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141727633] [2019-10-13 23:20:35,687 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:20:35,861 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-10-13 23:20:35,862 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 23:20:35,863 INFO L256 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 23:20:35,875 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:20:35,889 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 246 proven. 3 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2019-10-13 23:20:35,889 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:20:35,924 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2019-10-13 23:20:35,924 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1450607178] [2019-10-13 23:20:35,926 INFO L162 IcfgInterpreter]: Started Sifa with 19 locations of interest [2019-10-13 23:20:35,927 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:20:35,927 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:20:35,928 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:20:35,928 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:20:35,947 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 23:20:37,353 INFO L199 IcfgInterpreter]: Interpreting procedure max with input of size 1 for LOIs [2019-10-13 23:20:37,377 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 23:20:37,380 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 23:20:37,380 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 23:20:37,380 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 656#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 23:20:37,381 INFO L193 IcfgInterpreter]: Reachable states at location maxEXIT satisfy 652#(and (not (< max_~i~0 10)) (<= 0 max_~i~0) (= (ite (<= (mod max_~ret~0 4294967296) 2147483647) (mod max_~ret~0 4294967296) (+ (mod max_~ret~0 4294967296) (- 4294967296))) |max_#res|) (<= 10 max_~i~0)) [2019-10-13 23:20:37,381 INFO L193 IcfgInterpreter]: Reachable states at location L36-1 satisfy 483#true [2019-10-13 23:20:37,381 INFO L193 IcfgInterpreter]: Reachable states at location L36 satisfy 526#(and (not (< main_~i~2 9)) (<= 9 main_~i~2) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)) [2019-10-13 23:20:37,381 INFO L193 IcfgInterpreter]: Reachable states at location L9-3 satisfy 647#(<= 0 max_~i~0) [2019-10-13 23:20:37,382 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)) [2019-10-13 23:20:37,382 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))) [2019-10-13 23:20:37,382 INFO L193 IcfgInterpreter]: Reachable states at location L27 satisfy 124#(or (exists ((v_prenex_777 Int) (v_max_~ret~0_BEFORE_RETURN_105 Int)) (or (and (not (<= (mod v_prenex_777 4294967296) 2147483647)) (= |main_#t~ret6| (+ (mod v_prenex_777 4294967296) (- 4294967296))) (not (< main_~i~1 10))) (and (<= (mod v_max_~ret~0_BEFORE_RETURN_105 4294967296) 2147483647) (= (mod v_max_~ret~0_BEFORE_RETURN_105 4294967296) |main_#t~ret6|) (not (< main_~i~1 10))))) (exists ((v_max_~ret~0_BEFORE_RETURN_106 Int) (v_prenex_778 Int)) (or (and (= |main_#t~ret6| (mod v_prenex_778 4294967296)) (not (< main_~i~1 10)) (<= (mod v_prenex_778 4294967296) 2147483647)) (and (not (<= (mod v_max_~ret~0_BEFORE_RETURN_106 4294967296) 2147483647)) (= |main_#t~ret6| (+ (mod v_max_~ret~0_BEFORE_RETURN_106 4294967296) (- 4294967296))) (not (< main_~i~1 10)))))) [2019-10-13 23:20:37,382 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 661#(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)) [2019-10-13 23:20:37,383 INFO L193 IcfgInterpreter]: Reachable states at location L38 satisfy 384#true [2019-10-13 23:20:37,383 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 23:20:37,383 INFO L193 IcfgInterpreter]: Reachable states at location L39 satisfy 317#true [2019-10-13 23:20:37,383 INFO L193 IcfgInterpreter]: Reachable states at location maxENTRY satisfy 605#true [2019-10-13 23:20:37,383 INFO L193 IcfgInterpreter]: Reachable states at location L30-1 satisfy 591#true [2019-10-13 23:20:37,384 INFO L193 IcfgInterpreter]: Reachable states at location L32-3 satisfy 564#true [2019-10-13 23:20:37,384 INFO L193 IcfgInterpreter]: Reachable states at location L23-4 satisfy 73#(and (<= 10 main_~i~1) (not (< main_~i~1 10))) [2019-10-13 23:20:37,384 INFO L193 IcfgInterpreter]: Reachable states at location L30 satisfy 596#(exists ((v_prenex_777 Int) (v_max_~ret~0_BEFORE_RETURN_105 Int) (v_max_~ret~0_BEFORE_RETURN_106 Int) (v_prenex_778 Int)) (or (and (not (<= (mod v_prenex_777 4294967296) 2147483647)) (<= main_~ret~1 2147483647) (= main_~ret~1 (+ (mod v_prenex_777 4294967296) (- 4294967296))) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (not (< main_~i~1 10)) (<= 0 (+ main_~ret~1 2147483648))) (and (<= main_~ret~1 2147483647) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (= main_~ret~1 (mod v_prenex_778 4294967296)) (<= (mod v_prenex_778 4294967296) 2147483647) (not (< main_~i~1 10)) (<= 0 (+ main_~ret~1 2147483648))) (and (= main_~ret~1 (+ (mod v_max_~ret~0_BEFORE_RETURN_106 4294967296) (- 4294967296))) (not (<= (mod v_max_~ret~0_BEFORE_RETURN_106 4294967296) 2147483647)) (<= main_~ret~1 2147483647) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (not (< main_~i~1 10)) (<= 0 (+ main_~ret~1 2147483648))) (and (<= main_~ret~1 2147483647) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (<= (mod v_max_~ret~0_BEFORE_RETURN_105 4294967296) 2147483647) (= (mod v_max_~ret~0_BEFORE_RETURN_105 4294967296) main_~ret~1) (not (< main_~i~1 10)) (<= 0 (+ main_~ret~1 2147483648))))) [2019-10-13 23:20:37,384 INFO L193 IcfgInterpreter]: Reachable states at location L23-3 satisfy 68#true [2019-10-13 23:20:37,385 INFO L193 IcfgInterpreter]: Reachable states at location mainErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 238#(or (and (exists ((v_max_~ret~0_BEFORE_RETURN_109 Int) (v_prenex_806 Int) (v_max_~ret~0_BEFORE_RETURN_110 Int) (v_prenex_805 Int)) (or (and (= main_~ret5~0 (mod v_prenex_806 4294967296)) (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (<= (mod v_prenex_806 4294967296) 2147483647) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)) (and (= main_~ret5~0 (+ (mod v_max_~ret~0_BEFORE_RETURN_110 4294967296) (- 4294967296))) (not (<= (mod v_max_~ret~0_BEFORE_RETURN_110 4294967296) 2147483647)) (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)) (and (not (< main_~i~2 9)) (= (+ (mod v_prenex_805 4294967296) (- 4294967296)) main_~ret5~0) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (not (<= (mod v_prenex_805 4294967296) 2147483647)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)) (and (= (mod v_max_~ret~0_BEFORE_RETURN_109 4294967296) main_~ret5~0) (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= (mod v_max_~ret~0_BEFORE_RETURN_109 4294967296) 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)))) (not (= main_~ret~1 main_~ret5~0))) (and (not (= main_~ret~1 main_~ret2~0)) (exists ((v_max_~ret~0_BEFORE_RETURN_109 Int) (v_prenex_806 Int) (v_max_~ret~0_BEFORE_RETURN_110 Int) (v_prenex_805 Int)) (or (and (= main_~ret5~0 (mod v_prenex_806 4294967296)) (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (<= (mod v_prenex_806 4294967296) 2147483647) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)) (and (= main_~ret5~0 (+ (mod v_max_~ret~0_BEFORE_RETURN_110 4294967296) (- 4294967296))) (not (<= (mod v_max_~ret~0_BEFORE_RETURN_110 4294967296) 2147483647)) (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)) (and (not (< main_~i~2 9)) (= (+ (mod v_prenex_805 4294967296) (- 4294967296)) main_~ret5~0) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (not (<= (mod v_prenex_805 4294967296) 2147483647)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)) (and (= (mod v_max_~ret~0_BEFORE_RETURN_109 4294967296) main_~ret5~0) (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= (mod v_max_~ret~0_BEFORE_RETURN_109 4294967296) 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)))))) [2019-10-13 23:20:39,817 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 23:20:39,818 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 11] total 19 [2019-10-13 23:20:39,818 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689875000] [2019-10-13 23:20:39,819 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-10-13 23:20:39,820 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:20:39,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-10-13 23:20:39,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=314, Unknown=1, NotChecked=0, Total=380 [2019-10-13 23:20:39,820 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 20 states. [2019-10-13 23:20:40,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:20:40,591 INFO L93 Difference]: Finished difference Result 63 states and 71 transitions. [2019-10-13 23:20:40,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-13 23:20:40,591 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 66 [2019-10-13 23:20:40,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:20:40,593 INFO L225 Difference]: With dead ends: 63 [2019-10-13 23:20:40,593 INFO L226 Difference]: Without dead ends: 45 [2019-10-13 23:20:40,594 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=186, Invalid=935, Unknown=1, NotChecked=0, Total=1122 [2019-10-13 23:20:40,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-10-13 23:20:40,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2019-10-13 23:20:40,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-10-13 23:20:40,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2019-10-13 23:20:40,602 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 66 [2019-10-13 23:20:40,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:20:40,602 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2019-10-13 23:20:40,602 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-10-13 23:20:40,602 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2019-10-13 23:20:40,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-10-13 23:20:40,604 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:20:40,604 INFO L380 BasicCegarLoop]: trace histogram [30, 10, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:20:40,808 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:20:40,808 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:20:40,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:20:40,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1814718451, now seen corresponding path program 6 times [2019-10-13 23:20:40,809 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:20:40,809 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941818927] [2019-10-13 23:20:40,810 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:40,810 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:40,810 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:20:40,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:20:41,050 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2019-10-13 23:20:41,050 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941818927] [2019-10-13 23:20:41,051 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931098239] [2019-10-13 23:20:41,051 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:20:41,265 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-13 23:20:41,265 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 23:20:41,267 INFO L256 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 23:20:41,269 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:20:41,286 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 246 proven. 21 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2019-10-13 23:20:41,286 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:20:41,355 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2019-10-13 23:20:41,356 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [559512286] [2019-10-13 23:20:41,358 INFO L162 IcfgInterpreter]: Started Sifa with 19 locations of interest [2019-10-13 23:20:41,359 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:20:41,359 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:20:41,359 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:20:41,360 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:20:41,375 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 23:20:42,687 INFO L199 IcfgInterpreter]: Interpreting procedure max with input of size 1 for LOIs [2019-10-13 23:20:42,716 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 23:20:42,720 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 23:20:42,720 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 23:20:42,720 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 656#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 23:20:42,720 INFO L193 IcfgInterpreter]: Reachable states at location maxEXIT satisfy 652#(and (not (< max_~i~0 10)) (<= 0 max_~i~0) (= (ite (<= (mod max_~ret~0 4294967296) 2147483647) (mod max_~ret~0 4294967296) (+ (mod max_~ret~0 4294967296) (- 4294967296))) |max_#res|) (<= 10 max_~i~0)) [2019-10-13 23:20:42,720 INFO L193 IcfgInterpreter]: Reachable states at location L36-1 satisfy 483#true [2019-10-13 23:20:42,721 INFO L193 IcfgInterpreter]: Reachable states at location L36 satisfy 526#(and (not (< main_~i~2 9)) (<= 9 main_~i~2) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)) [2019-10-13 23:20:42,721 INFO L193 IcfgInterpreter]: Reachable states at location L9-3 satisfy 647#(<= 0 max_~i~0) [2019-10-13 23:20:42,721 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)) [2019-10-13 23:20:42,721 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)) [2019-10-13 23:20:42,721 INFO L193 IcfgInterpreter]: Reachable states at location L27 satisfy 124#(or (exists ((v_prenex_972 Int) (v_max_~ret~0_BEFORE_RETURN_132 Int)) (or (and (<= (mod v_max_~ret~0_BEFORE_RETURN_132 4294967296) 2147483647) (= |main_#t~ret6| (mod v_max_~ret~0_BEFORE_RETURN_132 4294967296)) (not (< main_~i~1 10))) (and (not (<= (mod v_prenex_972 4294967296) 2147483647)) (= (+ (mod v_prenex_972 4294967296) (- 4294967296)) |main_#t~ret6|) (not (< main_~i~1 10))))) (exists ((v_prenex_971 Int) (v_max_~ret~0_BEFORE_RETURN_131 Int)) (or (and (<= (mod v_prenex_971 4294967296) 2147483647) (= (mod v_prenex_971 4294967296) |main_#t~ret6|) (not (< main_~i~1 10))) (and (= (+ (mod v_max_~ret~0_BEFORE_RETURN_131 4294967296) (- 4294967296)) |main_#t~ret6|) (not (< main_~i~1 10)) (not (<= (mod v_max_~ret~0_BEFORE_RETURN_131 4294967296) 2147483647)))))) [2019-10-13 23:20:42,722 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 661#(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)) [2019-10-13 23:20:42,722 INFO L193 IcfgInterpreter]: Reachable states at location L38 satisfy 384#true [2019-10-13 23:20:42,722 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 23:20:42,722 INFO L193 IcfgInterpreter]: Reachable states at location L39 satisfy 317#true [2019-10-13 23:20:42,722 INFO L193 IcfgInterpreter]: Reachable states at location maxENTRY satisfy 605#true [2019-10-13 23:20:42,722 INFO L193 IcfgInterpreter]: Reachable states at location L30-1 satisfy 591#true [2019-10-13 23:20:42,723 INFO L193 IcfgInterpreter]: Reachable states at location L32-3 satisfy 564#true [2019-10-13 23:20:42,723 INFO L193 IcfgInterpreter]: Reachable states at location L23-4 satisfy 73#(and (<= 10 main_~i~1) (not (< main_~i~1 10))) [2019-10-13 23:20:42,723 INFO L193 IcfgInterpreter]: Reachable states at location L30 satisfy 596#(exists ((v_prenex_972 Int) (v_prenex_971 Int) (v_max_~ret~0_BEFORE_RETURN_131 Int) (v_max_~ret~0_BEFORE_RETURN_132 Int)) (or (and (= main_~ret~1 (mod v_max_~ret~0_BEFORE_RETURN_132 4294967296)) (<= main_~ret~1 2147483647) (<= (mod v_max_~ret~0_BEFORE_RETURN_132 4294967296) 2147483647) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (not (< main_~i~1 10)) (<= 0 (+ main_~ret~1 2147483648))) (and (<= (mod v_prenex_971 4294967296) 2147483647) (<= main_~ret~1 2147483647) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (not (< main_~i~1 10)) (= main_~ret~1 (mod v_prenex_971 4294967296)) (<= 0 (+ main_~ret~1 2147483648))) (and (not (<= (mod v_prenex_972 4294967296) 2147483647)) (<= main_~ret~1 2147483647) (= main_~ret~1 (+ (mod v_prenex_972 4294967296) (- 4294967296))) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (not (< main_~i~1 10)) (<= 0 (+ main_~ret~1 2147483648))) (and (<= main_~ret~1 2147483647) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (= main_~ret~1 (+ (mod v_max_~ret~0_BEFORE_RETURN_131 4294967296) (- 4294967296))) (not (<= (mod v_max_~ret~0_BEFORE_RETURN_131 4294967296) 2147483647)) (not (< main_~i~1 10)) (<= 0 (+ main_~ret~1 2147483648))))) [2019-10-13 23:20:42,723 INFO L193 IcfgInterpreter]: Reachable states at location L23-3 satisfy 68#true [2019-10-13 23:20:42,723 INFO L193 IcfgInterpreter]: Reachable states at location mainErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 238#(or (and (exists ((v_prenex_1000 Int) (v_max_~ret~0_BEFORE_RETURN_135 Int) (v_prenex_999 Int) (v_max_~ret~0_BEFORE_RETURN_136 Int)) (or (and (= main_~ret5~0 (+ (mod v_prenex_1000 4294967296) (- 4294967296))) (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0) (not (<= (mod v_prenex_1000 4294967296) 2147483647))) (and (= (mod v_prenex_999 4294967296) main_~ret5~0) (not (< main_~i~2 9)) (<= (mod v_prenex_999 4294967296) 2147483647) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)) (and (not (<= (mod v_max_~ret~0_BEFORE_RETURN_135 4294967296) 2147483647)) (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= main_~ret5~0 (+ (mod v_max_~ret~0_BEFORE_RETURN_135 4294967296) (- 4294967296))) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)) (and (= main_~ret5~0 (mod v_max_~ret~0_BEFORE_RETURN_136 4294967296)) (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (<= (mod v_max_~ret~0_BEFORE_RETURN_136 4294967296) 2147483647) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)))) (not (= main_~ret~1 main_~ret5~0))) (and (not (= main_~ret~1 main_~ret2~0)) (exists ((v_prenex_1000 Int) (v_max_~ret~0_BEFORE_RETURN_135 Int) (v_prenex_999 Int) (v_max_~ret~0_BEFORE_RETURN_136 Int)) (or (and (= main_~ret5~0 (+ (mod v_prenex_1000 4294967296) (- 4294967296))) (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0) (not (<= (mod v_prenex_1000 4294967296) 2147483647))) (and (= (mod v_prenex_999 4294967296) main_~ret5~0) (not (< main_~i~2 9)) (<= (mod v_prenex_999 4294967296) 2147483647) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)) (and (not (<= (mod v_max_~ret~0_BEFORE_RETURN_135 4294967296) 2147483647)) (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= main_~ret5~0 (+ (mod v_max_~ret~0_BEFORE_RETURN_135 4294967296) (- 4294967296))) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)) (and (= main_~ret5~0 (mod v_max_~ret~0_BEFORE_RETURN_136 4294967296)) (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (<= (mod v_max_~ret~0_BEFORE_RETURN_136 4294967296) 2147483647) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)))))) [2019-10-13 23:20:43,076 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 23:20:43,077 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 11] total 22 [2019-10-13 23:20:43,077 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148108346] [2019-10-13 23:20:43,078 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-10-13 23:20:43,079 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:20:43,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-10-13 23:20:43,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2019-10-13 23:20:43,079 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 23 states. [2019-10-13 23:20:44,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:20:44,004 INFO L93 Difference]: Finished difference Result 66 states and 73 transitions. [2019-10-13 23:20:44,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-13 23:20:44,005 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 70 [2019-10-13 23:20:44,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:20:44,007 INFO L225 Difference]: With dead ends: 66 [2019-10-13 23:20:44,007 INFO L226 Difference]: Without dead ends: 48 [2019-10-13 23:20:44,008 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 193 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=276, Invalid=1284, Unknown=0, NotChecked=0, Total=1560 [2019-10-13 23:20:44,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-10-13 23:20:44,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2019-10-13 23:20:44,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-10-13 23:20:44,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2019-10-13 23:20:44,016 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 70 [2019-10-13 23:20:44,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:20:44,017 INFO L462 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2019-10-13 23:20:44,017 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-10-13 23:20:44,017 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2019-10-13 23:20:44,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2019-10-13 23:20:44,018 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:20:44,018 INFO L380 BasicCegarLoop]: trace histogram [30, 10, 9, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:20:44,223 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:20:44,223 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:20:44,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:20:44,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1614484445, now seen corresponding path program 7 times [2019-10-13 23:20:44,224 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:20:44,224 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165431097] [2019-10-13 23:20:44,224 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:44,224 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:44,224 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY