java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/array-examples/standard_partition_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 00:14:11,480 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 00:14:11,482 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 00:14:11,493 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 00:14:11,493 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 00:14:11,494 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 00:14:11,495 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 00:14:11,497 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 00:14:11,498 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 00:14:11,499 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 00:14:11,500 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 00:14:11,501 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 00:14:11,502 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 00:14:11,503 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 00:14:11,503 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 00:14:11,505 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 00:14:11,505 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 00:14:11,506 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 00:14:11,508 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 00:14:11,510 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 00:14:11,512 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 00:14:11,513 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 00:14:11,514 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 00:14:11,515 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 00:14:11,517 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-07 00:14:11,525 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 00:14:11,526 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 00:14:11,527 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 00:14:11,527 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-07 00:14:11,544 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 00:14:11,544 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 00:14:11,545 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 00:14:11,545 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 00:14:11,546 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 00:14:11,546 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 00:14:11,546 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 00:14:11,546 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 00:14:11,547 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 00:14:11,547 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 00:14:11,547 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 00:14:11,547 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 00:14:11,547 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 00:14:11,548 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 00:14:11,548 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 00:14:11,548 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 00:14:11,548 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 00:14:11,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 00:14:11,549 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 00:14:11,549 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 00:14:11,549 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 00:14:11,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 00:14:11,550 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 00:14:11,550 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 00:14:11,551 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 00:14:11,551 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 00:14:11,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 00:14:11,551 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 00:14:11,552 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-07 00:14:11,821 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 00:14:11,834 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 00:14:11,837 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 00:14:11,839 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 00:14:11,839 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 00:14:11,840 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_partition_ground-1.i [2019-10-07 00:14:11,912 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a32bf3963/44a1af4b341c4d79a95cff1c0e03aff9/FLAG931d64855 [2019-10-07 00:14:12,364 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 00:14:12,367 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_partition_ground-1.i [2019-10-07 00:14:12,373 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a32bf3963/44a1af4b341c4d79a95cff1c0e03aff9/FLAG931d64855 [2019-10-07 00:14:12,749 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a32bf3963/44a1af4b341c4d79a95cff1c0e03aff9 [2019-10-07 00:14:12,760 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 00:14:12,762 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 00:14:12,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 00:14:12,766 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 00:14:12,769 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 00:14:12,770 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:14:12" (1/1) ... [2019-10-07 00:14:12,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54268d74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:14:12, skipping insertion in model container [2019-10-07 00:14:12,773 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:14:12" (1/1) ... [2019-10-07 00:14:12,781 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 00:14:12,803 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 00:14:13,003 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 00:14:13,006 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 00:14:13,028 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 00:14:13,048 INFO L192 MainTranslator]: Completed translation [2019-10-07 00:14:13,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:14:13 WrapperNode [2019-10-07 00:14:13,049 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 00:14:13,049 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 00:14:13,049 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 00:14:13,049 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 00:14:13,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:14:13" (1/1) ... [2019-10-07 00:14:13,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:14:13" (1/1) ... [2019-10-07 00:14:13,155 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:14:13" (1/1) ... [2019-10-07 00:14:13,155 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:14:13" (1/1) ... [2019-10-07 00:14:13,163 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:14:13" (1/1) ... [2019-10-07 00:14:13,169 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:14:13" (1/1) ... [2019-10-07 00:14:13,171 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:14:13" (1/1) ... [2019-10-07 00:14:13,173 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 00:14:13,173 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 00:14:13,174 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 00:14:13,174 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 00:14:13,175 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:14:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 00:14:13,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 00:14:13,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 00:14:13,236 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-07 00:14:13,237 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 00:14:13,237 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 00:14:13,237 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 00:14:13,237 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-07 00:14:13,237 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 00:14:13,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 00:14:13,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 00:14:13,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 00:14:13,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 00:14:13,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 00:14:13,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 00:14:13,706 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 00:14:13,707 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-07 00:14:13,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 12:14:13 BoogieIcfgContainer [2019-10-07 00:14:13,708 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 00:14:13,710 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 00:14:13,710 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 00:14:13,713 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 00:14:13,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 12:14:12" (1/3) ... [2019-10-07 00:14:13,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4343ea38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 12:14:13, skipping insertion in model container [2019-10-07 00:14:13,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:14:13" (2/3) ... [2019-10-07 00:14:13,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4343ea38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 12:14:13, skipping insertion in model container [2019-10-07 00:14:13,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 12:14:13" (3/3) ... [2019-10-07 00:14:13,716 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_partition_ground-1.i [2019-10-07 00:14:13,726 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 00:14:13,733 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 00:14:13,745 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 00:14:13,768 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 00:14:13,769 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 00:14:13,769 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 00:14:13,769 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 00:14:13,769 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 00:14:13,769 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 00:14:13,769 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 00:14:13,769 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 00:14:13,783 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-10-07 00:14:13,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-07 00:14:13,788 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:14:13,788 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:14:13,790 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:14:13,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:14:13,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1921227635, now seen corresponding path program 1 times [2019-10-07 00:14:13,802 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:14:13,802 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:14:13,802 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:14:13,802 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:14:13,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:14:13,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:14:13,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:14:13,984 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:14:13,985 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:14:13,986 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 00:14:13,990 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 00:14:14,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 00:14:14,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 00:14:14,012 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 3 states. [2019-10-07 00:14:14,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:14:14,082 INFO L93 Difference]: Finished difference Result 40 states and 53 transitions. [2019-10-07 00:14:14,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 00:14:14,085 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2019-10-07 00:14:14,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:14:14,099 INFO L225 Difference]: With dead ends: 40 [2019-10-07 00:14:14,099 INFO L226 Difference]: Without dead ends: 21 [2019-10-07 00:14:14,107 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 00:14:14,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-10-07 00:14:14,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-10-07 00:14:14,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-10-07 00:14:14,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2019-10-07 00:14:14,167 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 12 [2019-10-07 00:14:14,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:14:14,169 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2019-10-07 00:14:14,169 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 00:14:14,170 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2019-10-07 00:14:14,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-07 00:14:14,172 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:14:14,172 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:14:14,172 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:14:14,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:14:14,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1598045320, now seen corresponding path program 1 times [2019-10-07 00:14:14,175 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:14:14,176 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:14:14,176 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:14:14,176 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:14:14,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:14:14,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:14:14,336 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-07 00:14:14,337 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:14:14,338 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:14:14,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:14:14,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:14:14,401 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 00:14:14,407 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:14:14,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-07 00:14:14,444 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:14:14,474 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-07 00:14:14,474 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:14:14,509 INFO L162 IcfgInterpreter]: Started Sifa with 13 locations of interest [2019-10-07 00:14:14,510 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:14:14,516 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:14:14,525 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:14:14,525 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:14:14,737 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-07 00:14:15,215 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 21 for LOIs [2019-10-07 00:14:15,233 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-07 00:14:15,241 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 00:14:15,242 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 00:14:15,242 INFO L193 IcfgInterpreter]: Reachable states at location L3-1 satisfy 119#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_prenex_11 Int) (|v_main_~#bb~0.base_BEFORE_CALL_1| Int) (v_prenex_10 Int) (|v_main_~#bb~0.offset_BEFORE_CALL_1| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (<= 0 (select (select |#memory_int| v_prenex_10) v_prenex_11))) (and (not (<= 0 (select (select |#memory_int| |v_main_~#bb~0.base_BEFORE_CALL_1|) |v_main_~#bb~0.offset_BEFORE_CALL_1|))) (= |__VERIFIER_assert_#in~cond| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:14:15,242 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 128#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 00:14:15,243 INFO L193 IcfgInterpreter]: Reachable states at location L29-3 satisfy 99#(and (<= 100000 main_~a~0) (= main_~x~0 0) (<= 0 main_~a~0) (<= main_~x~0 0) (not (< main_~a~0 100000)) (<= 0 main_~x~0)) [2019-10-07 00:14:15,243 INFO L193 IcfgInterpreter]: Reachable states at location L3 satisfy 114#(and (exists ((v_prenex_11 Int) (|v_main_~#bb~0.base_BEFORE_CALL_1| Int) (v_prenex_10 Int) (|v_main_~#bb~0.offset_BEFORE_CALL_1| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (<= 0 (select (select |#memory_int| v_prenex_10) v_prenex_11))) (and (not (<= 0 (select (select |#memory_int| |v_main_~#bb~0.base_BEFORE_CALL_1|) |v_main_~#bb~0.offset_BEFORE_CALL_1|))) (= |__VERIFIER_assert_#in~cond| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:14:15,243 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:14:15,243 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:14:15,244 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 133#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:14:15,244 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 00:14:15,244 INFO L193 IcfgInterpreter]: Reachable states at location L21-2 satisfy 94#(<= 0 main_~a~0) [2019-10-07 00:14:15,245 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 109#(exists ((v_prenex_11 Int) (|v_main_~#bb~0.base_BEFORE_CALL_1| Int) (v_prenex_10 Int) (|v_main_~#bb~0.offset_BEFORE_CALL_1| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (<= 0 (select (select |#memory_int| v_prenex_10) v_prenex_11))) (and (not (<= 0 (select (select |#memory_int| |v_main_~#bb~0.base_BEFORE_CALL_1|) |v_main_~#bb~0.offset_BEFORE_CALL_1|))) (= |__VERIFIER_assert_#in~cond| 0)))) [2019-10-07 00:14:15,245 INFO L193 IcfgInterpreter]: Reachable states at location L30 satisfy 104#(and (<= 100000 main_~a~0) (<= 0 main_~b~0) (= main_~x~0 0) (< main_~x~0 main_~b~0) (<= 0 main_~a~0) (<= main_~x~0 0) (not (< main_~a~0 100000)) (<= 0 main_~x~0) (= (select (select |#memory_int| |main_~#bb~0.base|) (+ (* 4 main_~x~0) |main_~#bb~0.offset|)) |main_#t~mem6|)) [2019-10-07 00:14:15,246 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 124#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_prenex_11 Int) (|v_main_~#bb~0.base_BEFORE_CALL_1| Int) (v_prenex_10 Int) (|v_main_~#bb~0.offset_BEFORE_CALL_1| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (<= 0 (select (select |#memory_int| v_prenex_10) v_prenex_11))) (and (not (<= 0 (select (select |#memory_int| |v_main_~#bb~0.base_BEFORE_CALL_1|) |v_main_~#bb~0.offset_BEFORE_CALL_1|))) (= |__VERIFIER_assert_#in~cond| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:14:15,247 INFO L193 IcfgInterpreter]: Reachable states at location L12-2 satisfy 68#true [2019-10-07 00:14:15,529 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 00:14:15,529 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 11] total 17 [2019-10-07 00:14:15,531 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-10-07 00:14:15,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-10-07 00:14:15,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2019-10-07 00:14:15,534 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 17 states. [2019-10-07 00:14:16,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:14:16,203 INFO L93 Difference]: Finished difference Result 53 states and 68 transitions. [2019-10-07 00:14:16,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-07 00:14:16,204 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2019-10-07 00:14:16,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:14:16,206 INFO L225 Difference]: With dead ends: 53 [2019-10-07 00:14:16,206 INFO L226 Difference]: Without dead ends: 39 [2019-10-07 00:14:16,207 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=158, Invalid=654, Unknown=0, NotChecked=0, Total=812 [2019-10-07 00:14:16,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-10-07 00:14:16,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2019-10-07 00:14:16,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-10-07 00:14:16,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2019-10-07 00:14:16,219 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 14 [2019-10-07 00:14:16,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:14:16,219 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2019-10-07 00:14:16,219 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-10-07 00:14:16,219 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2019-10-07 00:14:16,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-07 00:14:16,220 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:14:16,220 INFO L385 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:14:16,424 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:14:16,425 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:14:16,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:14:16,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1908337869, now seen corresponding path program 2 times [2019-10-07 00:14:16,425 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:14:16,426 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:14:16,426 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:14:16,426 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:14:16,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:14:16,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:14:16,547 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-07 00:14:16,548 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:14:16,548 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:14:16,548 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:14:16,621 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-10-07 00:14:16,622 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-07 00:14:16,623 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-07 00:14:16,626 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:14:16,645 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-07 00:14:16,646 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:14:16,701 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-07 00:14:16,701 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:14:16,703 INFO L162 IcfgInterpreter]: Started Sifa with 13 locations of interest [2019-10-07 00:14:16,703 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:14:16,703 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:14:16,704 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:14:16,704 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:14:16,750 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-07 00:14:17,048 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 21 for LOIs [2019-10-07 00:14:17,069 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-07 00:14:17,076 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 00:14:17,076 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 00:14:17,076 INFO L193 IcfgInterpreter]: Reachable states at location L3-1 satisfy 119#(and (<= __VERIFIER_assert_~cond 0) (exists ((|v_main_~#bb~0.base_BEFORE_CALL_2| Int) (v_prenex_20 Int) (v_prenex_19 Int) (|v_main_~#bb~0.offset_BEFORE_CALL_2| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (<= 0 (select (select |#memory_int| |v_main_~#bb~0.base_BEFORE_CALL_2|) |v_main_~#bb~0.offset_BEFORE_CALL_2|))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (<= 0 (select (select |#memory_int| v_prenex_19) v_prenex_20)))))) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:14:17,077 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 128#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 00:14:17,077 INFO L193 IcfgInterpreter]: Reachable states at location L29-3 satisfy 99#(and (<= 100000 main_~a~0) (= main_~x~0 0) (<= 0 main_~a~0) (<= main_~x~0 0) (not (< main_~a~0 100000)) (<= 0 main_~x~0)) [2019-10-07 00:14:17,077 INFO L193 IcfgInterpreter]: Reachable states at location L3 satisfy 114#(and (exists ((|v_main_~#bb~0.base_BEFORE_CALL_2| Int) (v_prenex_20 Int) (v_prenex_19 Int) (|v_main_~#bb~0.offset_BEFORE_CALL_2| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (<= 0 (select (select |#memory_int| |v_main_~#bb~0.base_BEFORE_CALL_2|) |v_main_~#bb~0.offset_BEFORE_CALL_2|))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (<= 0 (select (select |#memory_int| v_prenex_19) v_prenex_20)))))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:14:17,078 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:14:17,078 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:14:17,078 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 133#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:14:17,078 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 00:14:17,079 INFO L193 IcfgInterpreter]: Reachable states at location L21-2 satisfy 94#(<= 0 main_~a~0) [2019-10-07 00:14:17,079 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 109#(exists ((|v_main_~#bb~0.base_BEFORE_CALL_2| Int) (v_prenex_20 Int) (v_prenex_19 Int) (|v_main_~#bb~0.offset_BEFORE_CALL_2| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (<= 0 (select (select |#memory_int| |v_main_~#bb~0.base_BEFORE_CALL_2|) |v_main_~#bb~0.offset_BEFORE_CALL_2|))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (<= 0 (select (select |#memory_int| v_prenex_19) v_prenex_20)))))) [2019-10-07 00:14:17,079 INFO L193 IcfgInterpreter]: Reachable states at location L30 satisfy 104#(and (<= 100000 main_~a~0) (<= 0 main_~b~0) (= main_~x~0 0) (< main_~x~0 main_~b~0) (<= 0 main_~a~0) (<= main_~x~0 0) (not (< main_~a~0 100000)) (<= 0 main_~x~0) (= (select (select |#memory_int| |main_~#bb~0.base|) (+ (* 4 main_~x~0) |main_~#bb~0.offset|)) |main_#t~mem6|)) [2019-10-07 00:14:17,080 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 124#(and (<= __VERIFIER_assert_~cond 0) (exists ((|v_main_~#bb~0.base_BEFORE_CALL_2| Int) (v_prenex_20 Int) (v_prenex_19 Int) (|v_main_~#bb~0.offset_BEFORE_CALL_2| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (<= 0 (select (select |#memory_int| |v_main_~#bb~0.base_BEFORE_CALL_2|) |v_main_~#bb~0.offset_BEFORE_CALL_2|))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (<= 0 (select (select |#memory_int| v_prenex_19) v_prenex_20)))))) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:14:17,080 INFO L193 IcfgInterpreter]: Reachable states at location L12-2 satisfy 68#true [2019-10-07 00:14:17,342 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 00:14:17,343 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 11] total 23 [2019-10-07 00:14:17,344 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-10-07 00:14:17,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-10-07 00:14:17,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2019-10-07 00:14:17,345 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 23 states. [2019-10-07 00:14:18,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:14:18,137 INFO L93 Difference]: Finished difference Result 74 states and 97 transitions. [2019-10-07 00:14:18,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-07 00:14:18,138 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 20 [2019-10-07 00:14:18,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:14:18,139 INFO L225 Difference]: With dead ends: 74 [2019-10-07 00:14:18,139 INFO L226 Difference]: Without dead ends: 51 [2019-10-07 00:14:18,140 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=313, Invalid=1247, Unknown=0, NotChecked=0, Total=1560 [2019-10-07 00:14:18,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-10-07 00:14:18,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 45. [2019-10-07 00:14:18,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-10-07 00:14:18,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2019-10-07 00:14:18,151 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 20 [2019-10-07 00:14:18,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:14:18,152 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2019-10-07 00:14:18,152 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-10-07 00:14:18,152 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2019-10-07 00:14:18,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-07 00:14:18,153 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:14:18,153 INFO L385 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:14:18,362 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:14:18,363 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:14:18,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:14:18,364 INFO L82 PathProgramCache]: Analyzing trace with hash 854387411, now seen corresponding path program 3 times [2019-10-07 00:14:18,365 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:14:18,365 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:14:18,365 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:14:18,365 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:14:18,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:14:18,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:14:18,642 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-07 00:14:18,642 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:14:18,642 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:14:18,643 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:14:18,719 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-07 00:14:18,719 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-07 00:14:18,720 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-07 00:14:18,725 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:14:18,744 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-07 00:14:18,745 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:14:18,964 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-07 00:14:18,964 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:14:18,966 INFO L162 IcfgInterpreter]: Started Sifa with 13 locations of interest [2019-10-07 00:14:18,966 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:14:18,966 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:14:18,967 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:14:18,967 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:14:19,007 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-07 00:14:19,305 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 21 for LOIs [2019-10-07 00:14:19,323 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-07 00:14:19,329 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 00:14:19,329 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 00:14:19,330 INFO L193 IcfgInterpreter]: Reachable states at location L3-1 satisfy 119#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_main_~#bb~0.offset_BEFORE_CALL_3| Int) (v_prenex_29 Int) (v_prenex_28 Int) (|v_main_~#bb~0.base_BEFORE_CALL_3| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (<= 0 (select (select |#memory_int| |v_main_~#bb~0.base_BEFORE_CALL_3|) |v_main_~#bb~0.offset_BEFORE_CALL_3|))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (<= 0 (select (select |#memory_int| v_prenex_29) v_prenex_28)))))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:14:19,330 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 128#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 00:14:19,333 INFO L193 IcfgInterpreter]: Reachable states at location L29-3 satisfy 99#(and (<= 100000 main_~a~0) (= main_~x~0 0) (<= 0 main_~a~0) (<= main_~x~0 0) (not (< main_~a~0 100000)) (<= 0 main_~x~0)) [2019-10-07 00:14:19,334 INFO L193 IcfgInterpreter]: Reachable states at location L3 satisfy 114#(and (exists ((|v_main_~#bb~0.offset_BEFORE_CALL_3| Int) (v_prenex_29 Int) (v_prenex_28 Int) (|v_main_~#bb~0.base_BEFORE_CALL_3| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (<= 0 (select (select |#memory_int| |v_main_~#bb~0.base_BEFORE_CALL_3|) |v_main_~#bb~0.offset_BEFORE_CALL_3|))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (<= 0 (select (select |#memory_int| v_prenex_29) v_prenex_28)))))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:14:19,335 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:14:19,336 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:14:19,336 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 133#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:14:19,337 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 00:14:19,337 INFO L193 IcfgInterpreter]: Reachable states at location L21-2 satisfy 94#(<= 0 main_~a~0) [2019-10-07 00:14:19,337 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 109#(exists ((|v_main_~#bb~0.offset_BEFORE_CALL_3| Int) (v_prenex_29 Int) (v_prenex_28 Int) (|v_main_~#bb~0.base_BEFORE_CALL_3| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (<= 0 (select (select |#memory_int| |v_main_~#bb~0.base_BEFORE_CALL_3|) |v_main_~#bb~0.offset_BEFORE_CALL_3|))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (<= 0 (select (select |#memory_int| v_prenex_29) v_prenex_28)))))) [2019-10-07 00:14:19,338 INFO L193 IcfgInterpreter]: Reachable states at location L30 satisfy 104#(and (<= 100000 main_~a~0) (<= 0 main_~b~0) (= main_~x~0 0) (< main_~x~0 main_~b~0) (<= 0 main_~a~0) (<= main_~x~0 0) (not (< main_~a~0 100000)) (<= 0 main_~x~0) (= (select (select |#memory_int| |main_~#bb~0.base|) (+ (* 4 main_~x~0) |main_~#bb~0.offset|)) |main_#t~mem6|)) [2019-10-07 00:14:19,338 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 124#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_main_~#bb~0.offset_BEFORE_CALL_3| Int) (v_prenex_29 Int) (v_prenex_28 Int) (|v_main_~#bb~0.base_BEFORE_CALL_3| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (<= 0 (select (select |#memory_int| |v_main_~#bb~0.base_BEFORE_CALL_3|) |v_main_~#bb~0.offset_BEFORE_CALL_3|))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (<= 0 (select (select |#memory_int| v_prenex_29) v_prenex_28)))))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:14:19,339 INFO L193 IcfgInterpreter]: Reachable states at location L12-2 satisfy 68#true [2019-10-07 00:14:19,780 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 00:14:19,780 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13, 11] total 35 [2019-10-07 00:14:19,782 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2019-10-07 00:14:19,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2019-10-07 00:14:19,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=860, Unknown=0, NotChecked=0, Total=1190 [2019-10-07 00:14:19,784 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand 35 states. [2019-10-07 00:14:21,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:14:21,151 INFO L93 Difference]: Finished difference Result 104 states and 139 transitions. [2019-10-07 00:14:21,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-10-07 00:14:21,160 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 32 [2019-10-07 00:14:21,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:14:21,161 INFO L225 Difference]: With dead ends: 104 [2019-10-07 00:14:21,161 INFO L226 Difference]: Without dead ends: 75 [2019-10-07 00:14:21,164 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1009 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=979, Invalid=3053, Unknown=0, NotChecked=0, Total=4032 [2019-10-07 00:14:21,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2019-10-07 00:14:21,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 69. [2019-10-07 00:14:21,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2019-10-07 00:14:21,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 75 transitions. [2019-10-07 00:14:21,190 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 75 transitions. Word has length 32 [2019-10-07 00:14:21,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:14:21,190 INFO L462 AbstractCegarLoop]: Abstraction has 69 states and 75 transitions. [2019-10-07 00:14:21,190 INFO L463 AbstractCegarLoop]: Interpolant automaton has 35 states. [2019-10-07 00:14:21,190 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 75 transitions. [2019-10-07 00:14:21,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-10-07 00:14:21,192 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:14:21,193 INFO L385 BasicCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:14:21,393 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:14:21,399 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:14:21,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:14:21,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1220247021, now seen corresponding path program 4 times [2019-10-07 00:14:21,400 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:14:21,400 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:14:21,400 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:14:21,400 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:14:21,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:14:21,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:14:22,081 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2019-10-07 00:14:22,082 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:14:22,082 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:14:22,082 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:14:22,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:14:22,187 INFO L256 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 24 conjunts are in the unsatisfiable core [2019-10-07 00:14:22,191 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:14:22,214 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2019-10-07 00:14:22,215 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:14:22,882 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2019-10-07 00:14:22,882 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:14:22,883 INFO L162 IcfgInterpreter]: Started Sifa with 13 locations of interest [2019-10-07 00:14:22,883 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:14:22,884 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:14:22,884 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:14:22,884 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:14:22,907 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-07 00:14:23,105 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 21 for LOIs [2019-10-07 00:14:23,112 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-07 00:14:23,115 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 00:14:23,115 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 00:14:23,116 INFO L193 IcfgInterpreter]: Reachable states at location L3-1 satisfy 119#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond) (exists ((|v_main_~#bb~0.offset_BEFORE_CALL_4| Int) (v_prenex_39 Int) (v_prenex_40 Int) (|v_main_~#bb~0.base_BEFORE_CALL_4| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (<= 0 (select (select |#memory_int| |v_main_~#bb~0.base_BEFORE_CALL_4|) |v_main_~#bb~0.offset_BEFORE_CALL_4|)))) (and (= |__VERIFIER_assert_#in~cond| 1) (<= 0 (select (select |#memory_int| v_prenex_40) v_prenex_39))))) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:14:23,116 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 128#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 00:14:23,116 INFO L193 IcfgInterpreter]: Reachable states at location L29-3 satisfy 99#(and (<= 100000 main_~a~0) (= main_~x~0 0) (<= 0 main_~a~0) (<= main_~x~0 0) (not (< main_~a~0 100000)) (<= 0 main_~x~0)) [2019-10-07 00:14:23,116 INFO L193 IcfgInterpreter]: Reachable states at location L3 satisfy 114#(and (exists ((|v_main_~#bb~0.offset_BEFORE_CALL_4| Int) (v_prenex_39 Int) (v_prenex_40 Int) (|v_main_~#bb~0.base_BEFORE_CALL_4| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (<= 0 (select (select |#memory_int| |v_main_~#bb~0.base_BEFORE_CALL_4|) |v_main_~#bb~0.offset_BEFORE_CALL_4|)))) (and (= |__VERIFIER_assert_#in~cond| 1) (<= 0 (select (select |#memory_int| v_prenex_40) v_prenex_39))))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:14:23,117 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:14:23,117 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:14:23,117 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 133#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:14:23,117 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 00:14:23,118 INFO L193 IcfgInterpreter]: Reachable states at location L21-2 satisfy 94#(<= 0 main_~a~0) [2019-10-07 00:14:23,118 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 109#(exists ((|v_main_~#bb~0.offset_BEFORE_CALL_4| Int) (v_prenex_39 Int) (v_prenex_40 Int) (|v_main_~#bb~0.base_BEFORE_CALL_4| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (<= 0 (select (select |#memory_int| |v_main_~#bb~0.base_BEFORE_CALL_4|) |v_main_~#bb~0.offset_BEFORE_CALL_4|)))) (and (= |__VERIFIER_assert_#in~cond| 1) (<= 0 (select (select |#memory_int| v_prenex_40) v_prenex_39))))) [2019-10-07 00:14:23,118 INFO L193 IcfgInterpreter]: Reachable states at location L30 satisfy 104#(and (<= 100000 main_~a~0) (<= 0 main_~b~0) (= main_~x~0 0) (< main_~x~0 main_~b~0) (<= 0 main_~a~0) (<= main_~x~0 0) (not (< main_~a~0 100000)) (<= 0 main_~x~0) (= (select (select |#memory_int| |main_~#bb~0.base|) (+ (* 4 main_~x~0) |main_~#bb~0.offset|)) |main_#t~mem6|)) [2019-10-07 00:14:23,118 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 124#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond) (exists ((|v_main_~#bb~0.offset_BEFORE_CALL_4| Int) (v_prenex_39 Int) (v_prenex_40 Int) (|v_main_~#bb~0.base_BEFORE_CALL_4| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (<= 0 (select (select |#memory_int| |v_main_~#bb~0.base_BEFORE_CALL_4|) |v_main_~#bb~0.offset_BEFORE_CALL_4|)))) (and (= |__VERIFIER_assert_#in~cond| 1) (<= 0 (select (select |#memory_int| v_prenex_40) v_prenex_39))))) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-07 00:14:23,119 INFO L193 IcfgInterpreter]: Reachable states at location L12-2 satisfy 68#true [2019-10-07 00:14:23,459 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 00:14:23,460 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25, 11] total 59 [2019-10-07 00:14:23,461 INFO L442 AbstractCegarLoop]: Interpolant automaton has 59 states [2019-10-07 00:14:23,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2019-10-07 00:14:23,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1206, Invalid=2216, Unknown=0, NotChecked=0, Total=3422 [2019-10-07 00:14:23,463 INFO L87 Difference]: Start difference. First operand 69 states and 75 transitions. Second operand 59 states. [2019-10-07 00:14:26,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:14:26,681 INFO L93 Difference]: Finished difference Result 164 states and 223 transitions. [2019-10-07 00:14:26,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2019-10-07 00:14:26,681 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 56 [2019-10-07 00:14:26,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:14:26,683 INFO L225 Difference]: With dead ends: 164 [2019-10-07 00:14:26,683 INFO L226 Difference]: Without dead ends: 123 [2019-10-07 00:14:26,692 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2755 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=3607, Invalid=8825, Unknown=0, NotChecked=0, Total=12432 [2019-10-07 00:14:26,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2019-10-07 00:14:26,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 117. [2019-10-07 00:14:26,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2019-10-07 00:14:26,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 123 transitions. [2019-10-07 00:14:26,731 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 123 transitions. Word has length 56 [2019-10-07 00:14:26,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:14:26,732 INFO L462 AbstractCegarLoop]: Abstraction has 117 states and 123 transitions. [2019-10-07 00:14:26,732 INFO L463 AbstractCegarLoop]: Interpolant automaton has 59 states. [2019-10-07 00:14:26,732 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 123 transitions. [2019-10-07 00:14:26,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-10-07 00:14:26,740 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:14:26,740 INFO L385 BasicCegarLoop]: trace histogram [46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:14:26,944 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:14:26,945 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:14:26,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:14:26,945 INFO L82 PathProgramCache]: Analyzing trace with hash 951799955, now seen corresponding path program 5 times [2019-10-07 00:14:26,946 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:14:26,946 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:14:26,946 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:14:26,946 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:14:26,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:14:27,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:14:28,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2019-10-07 00:14:28,481 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:14:28,481 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:14:28,481 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true