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_partial_init_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 00:12:52,605 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 00:12:52,608 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 00:12:52,628 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 00:12:52,628 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 00:12:52,631 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 00:12:52,633 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 00:12:52,643 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 00:12:52,647 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 00:12:52,648 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 00:12:52,649 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 00:12:52,650 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 00:12:52,651 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 00:12:52,652 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 00:12:52,653 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 00:12:52,654 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 00:12:52,654 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 00:12:52,655 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 00:12:52,657 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 00:12:52,658 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 00:12:52,660 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 00:12:52,661 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 00:12:52,662 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 00:12:52,663 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 00:12:52,665 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-07 00:12:52,672 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 00:12:52,675 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 00:12:52,676 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 00:12:52,677 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 00:12:52,703 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 00:12:52,703 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 00:12:52,709 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 00:12:52,710 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 00:12:52,710 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 00:12:52,710 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 00:12:52,710 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 00:12:52,710 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 00:12:52,711 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 00:12:52,711 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 00:12:52,711 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 00:12:52,712 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 00:12:52,712 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 00:12:52,713 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 00:12:52,713 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 00:12:52,713 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 00:12:52,713 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 00:12:52,713 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 00:12:52,714 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 00:12:52,714 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 00:12:52,714 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 00:12:52,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 00:12:52,714 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 00:12:52,715 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 00:12:52,715 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 00:12:52,715 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 00:12:52,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 00:12:52,716 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 00:12:52,716 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 00:12:52,993 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 00:12:53,015 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 00:12:53,019 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 00:12:53,021 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 00:12:53,021 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 00:12:53,022 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_partial_init_ground.i [2019-10-07 00:12:53,104 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e7e3e36e/49388e8cd9164dc7b90e402ddabb4687/FLAGcd82d1217 [2019-10-07 00:12:53,583 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 00:12:53,584 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_partial_init_ground.i [2019-10-07 00:12:53,590 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e7e3e36e/49388e8cd9164dc7b90e402ddabb4687/FLAGcd82d1217 [2019-10-07 00:12:53,945 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e7e3e36e/49388e8cd9164dc7b90e402ddabb4687 [2019-10-07 00:12:53,956 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 00:12:53,958 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 00:12:53,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 00:12:53,959 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 00:12:53,963 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 00:12:53,964 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:12:53" (1/1) ... [2019-10-07 00:12:53,967 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@676b36a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:12:53, skipping insertion in model container [2019-10-07 00:12:53,967 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:12:53" (1/1) ... [2019-10-07 00:12:53,975 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 00:12:53,997 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 00:12:54,186 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 00:12:54,199 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 00:12:54,225 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 00:12:54,242 INFO L192 MainTranslator]: Completed translation [2019-10-07 00:12:54,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:12:54 WrapperNode [2019-10-07 00:12:54,243 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 00:12:54,244 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 00:12:54,244 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 00:12:54,244 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 00:12:54,336 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:12:54" (1/1) ... [2019-10-07 00:12:54,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:12:54" (1/1) ... [2019-10-07 00:12:54,345 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:12:54" (1/1) ... [2019-10-07 00:12:54,345 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:12:54" (1/1) ... [2019-10-07 00:12:54,354 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:12:54" (1/1) ... [2019-10-07 00:12:54,361 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:12:54" (1/1) ... [2019-10-07 00:12:54,364 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:12:54" (1/1) ... [2019-10-07 00:12:54,367 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 00:12:54,367 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 00:12:54,367 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 00:12:54,368 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 00:12:54,370 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:12:54" (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 00:12:54,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 00:12:54,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 00:12:54,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-07 00:12:54,435 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 00:12:54,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 00:12:54,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-07 00:12:54,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 00:12:54,435 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 00:12:54,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 00:12:54,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 00:12:54,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 00:12:54,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 00:12:54,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 00:12:54,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 00:12:54,879 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 00:12:54,880 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-07 00:12:54,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 12:12:54 BoogieIcfgContainer [2019-10-07 00:12:54,882 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 00:12:54,883 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 00:12:54,883 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 00:12:54,886 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 00:12:54,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 12:12:53" (1/3) ... [2019-10-07 00:12:54,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c2c1811 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 12:12:54, skipping insertion in model container [2019-10-07 00:12:54,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:12:54" (2/3) ... [2019-10-07 00:12:54,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c2c1811 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 12:12:54, skipping insertion in model container [2019-10-07 00:12:54,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 12:12:54" (3/3) ... [2019-10-07 00:12:54,890 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_partial_init_ground.i [2019-10-07 00:12:54,901 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 00:12:54,911 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 00:12:54,923 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 00:12:54,946 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 00:12:54,947 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 00:12:54,947 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 00:12:54,947 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 00:12:54,947 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 00:12:54,948 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 00:12:54,948 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 00:12:54,948 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 00:12:54,963 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-10-07 00:12:54,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-07 00:12:54,969 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:12:54,970 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:12:54,972 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:12:54,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:12:54,978 INFO L82 PathProgramCache]: Analyzing trace with hash -2016740759, now seen corresponding path program 1 times [2019-10-07 00:12:54,985 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:12:54,985 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:12:54,985 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:12:54,985 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:12:54,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:12:55,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:12:55,159 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 00:12:55,160 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:12:55,161 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:12:55,161 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 00:12:55,166 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 00:12:55,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 00:12:55,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 00:12:55,182 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 3 states. [2019-10-07 00:12:55,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:12:55,234 INFO L93 Difference]: Finished difference Result 40 states and 53 transitions. [2019-10-07 00:12:55,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 00:12:55,237 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2019-10-07 00:12:55,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:12:55,250 INFO L225 Difference]: With dead ends: 40 [2019-10-07 00:12:55,250 INFO L226 Difference]: Without dead ends: 21 [2019-10-07 00:12:55,257 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 00:12:55,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-10-07 00:12:55,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-10-07 00:12:55,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-10-07 00:12:55,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2019-10-07 00:12:55,301 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 12 [2019-10-07 00:12:55,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:12:55,301 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2019-10-07 00:12:55,301 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 00:12:55,302 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2019-10-07 00:12:55,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-07 00:12:55,304 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:12:55,304 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:12:55,304 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:12:55,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:12:55,305 INFO L82 PathProgramCache]: Analyzing trace with hash 826554714, now seen corresponding path program 1 times [2019-10-07 00:12:55,305 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:12:55,305 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:12:55,306 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:12:55,306 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:12:55,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:12:55,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:12:55,398 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 00:12:55,398 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:12:55,398 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:12:55,399 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 00:12:55,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:12:55,475 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 00:12:55,482 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:12:55,510 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 00:12:55,510 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:12:55,560 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 00:12:55,561 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:12:55,584 INFO L162 IcfgInterpreter]: Started Sifa with 13 locations of interest [2019-10-07 00:12:55,584 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:12:55,591 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:12:55,598 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:12:55,599 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:12:55,788 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-07 00:12:56,714 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2019-10-07 00:12:56,753 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-07 00:12:56,764 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 00:12:56,764 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 00:12:56,764 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 167#(and (or (and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) (and (<= 1 __VERIFIER_assert_~cond) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1) (<= |__VERIFIER_assert_#in~cond| 1))) (or (and (= |__VERIFIER_assert_#in~cond| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)))) [2019-10-07 00:12:56,765 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 172#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) [2019-10-07 00:12:56,765 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 181#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 00:12:56,766 INFO L193 IcfgInterpreter]: Reachable states at location L17-3 satisfy 147#(<= 0 main_~i~0) [2019-10-07 00:12:56,766 INFO L193 IcfgInterpreter]: Reachable states at location L25 satisfy 157#(and (<= 0 main_~j~0) (<= 0 main_~i~0) (= main_~x~0 0) (< main_~x~0 main_~j~0) (<= 100000 main_~i~0) (= |main_#t~mem7| (select (select |#memory_int| |main_~#C~0.base|) (+ (* 4 main_~x~0) |main_~#C~0.offset|))) (not (< main_~i~0 100000)) (<= main_~x~0 0) (<= 0 main_~x~0)) [2019-10-07 00:12:56,766 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 00:12:56,767 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 00:12:56,767 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 186#(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 00:12:56,767 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 00:12:56,767 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 162#(and (or (and (<= 1 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1)) (and (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0))) (or (= |__VERIFIER_assert_#in~cond| 0) (= |__VERIFIER_assert_#in~cond| 1))) [2019-10-07 00:12:56,768 INFO L193 IcfgInterpreter]: Reachable states at location L12-3 satisfy 72#true [2019-10-07 00:12:56,769 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 177#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) [2019-10-07 00:12:56,769 INFO L193 IcfgInterpreter]: Reachable states at location L24-3 satisfy 152#(and (<= 0 main_~i~0) (= main_~x~0 0) (<= 100000 main_~i~0) (not (< main_~i~0 100000)) (<= main_~x~0 0) (<= 0 main_~x~0)) [2019-10-07 00:12:57,090 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 00:12:57,090 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 11] total 17 [2019-10-07 00:12:57,093 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-10-07 00:12:57,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-10-07 00:12:57,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2019-10-07 00:12:57,095 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 17 states. [2019-10-07 00:12:57,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:12:57,756 INFO L93 Difference]: Finished difference Result 47 states and 63 transitions. [2019-10-07 00:12:57,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-07 00:12:57,758 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2019-10-07 00:12:57,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:12:57,761 INFO L225 Difference]: With dead ends: 47 [2019-10-07 00:12:57,762 INFO L226 Difference]: Without dead ends: 33 [2019-10-07 00:12:57,764 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=142, Invalid=614, Unknown=0, NotChecked=0, Total=756 [2019-10-07 00:12:57,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-10-07 00:12:57,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 27. [2019-10-07 00:12:57,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-10-07 00:12:57,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2019-10-07 00:12:57,775 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 14 [2019-10-07 00:12:57,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:12:57,775 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2019-10-07 00:12:57,775 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-10-07 00:12:57,776 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2019-10-07 00:12:57,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-07 00:12:57,777 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:12:57,777 INFO L385 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:12:57,980 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:12:57,981 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:12:57,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:12:57,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1090629335, now seen corresponding path program 2 times [2019-10-07 00:12:57,982 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:12:57,982 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:12:57,982 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:12:57,982 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:12:57,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:12:58,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:12:58,111 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 00:12:58,111 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:12:58,112 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:12:58,112 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 00:12:58,177 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-10-07 00:12:58,178 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-07 00:12:58,179 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-07 00:12:58,181 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:12:58,194 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 00:12:58,195 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:12:58,251 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 00:12:58,252 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:12:58,253 INFO L162 IcfgInterpreter]: Started Sifa with 13 locations of interest [2019-10-07 00:12:58,254 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:12:58,254 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:12:58,254 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:12:58,255 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:12:58,292 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-07 00:12:58,871 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2019-10-07 00:12:58,898 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-07 00:12:58,916 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 00:12:58,917 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 00:12:58,918 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 167#(and (or (and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) (and (<= 1 __VERIFIER_assert_~cond) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1) (<= |__VERIFIER_assert_#in~cond| 1))) (or (and (= |__VERIFIER_assert_#in~cond| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)))) [2019-10-07 00:12:58,918 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 172#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) [2019-10-07 00:12:58,918 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 181#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 00:12:58,919 INFO L193 IcfgInterpreter]: Reachable states at location L17-3 satisfy 147#(<= 0 main_~i~0) [2019-10-07 00:12:58,919 INFO L193 IcfgInterpreter]: Reachable states at location L25 satisfy 157#(and (<= 0 main_~j~0) (<= 0 main_~i~0) (= main_~x~0 0) (< main_~x~0 main_~j~0) (<= 100000 main_~i~0) (= |main_#t~mem7| (select (select |#memory_int| |main_~#C~0.base|) (+ (* 4 main_~x~0) |main_~#C~0.offset|))) (not (< main_~i~0 100000)) (<= main_~x~0 0) (<= 0 main_~x~0)) [2019-10-07 00:12:58,919 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 00:12:58,919 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 00:12:58,920 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 186#(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 00:12:58,920 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 00:12:58,923 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 162#(and (or (and (<= 1 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1)) (and (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0))) (or (= |__VERIFIER_assert_#in~cond| 0) (= |__VERIFIER_assert_#in~cond| 1))) [2019-10-07 00:12:58,923 INFO L193 IcfgInterpreter]: Reachable states at location L12-3 satisfy 72#true [2019-10-07 00:12:58,923 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 177#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) [2019-10-07 00:12:58,924 INFO L193 IcfgInterpreter]: Reachable states at location L24-3 satisfy 152#(and (<= 0 main_~i~0) (= main_~x~0 0) (<= 100000 main_~i~0) (not (< main_~i~0 100000)) (<= main_~x~0 0) (<= 0 main_~x~0)) [2019-10-07 00:12:59,222 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 00:12:59,222 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 11] total 23 [2019-10-07 00:12:59,223 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-10-07 00:12:59,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-10-07 00:12:59,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2019-10-07 00:12:59,225 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 23 states. [2019-10-07 00:12:59,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:12:59,979 INFO L93 Difference]: Finished difference Result 62 states and 84 transitions. [2019-10-07 00:12:59,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-07 00:12:59,982 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 20 [2019-10-07 00:12:59,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:12:59,983 INFO L225 Difference]: With dead ends: 62 [2019-10-07 00:12:59,984 INFO L226 Difference]: Without dead ends: 45 [2019-10-07 00:12:59,986 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 56 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 00:12:59,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-10-07 00:13:00,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2019-10-07 00:13:00,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-10-07 00:13:00,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2019-10-07 00:13:00,003 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 20 [2019-10-07 00:13:00,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:13:00,003 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2019-10-07 00:13:00,004 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-10-07 00:13:00,004 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2019-10-07 00:13:00,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-07 00:13:00,005 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:13:00,005 INFO L385 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:13:00,218 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:13:00,219 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:13:00,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:13:00,219 INFO L82 PathProgramCache]: Analyzing trace with hash -441096375, now seen corresponding path program 3 times [2019-10-07 00:13:00,219 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:13:00,219 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:13:00,219 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:13:00,220 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:13:00,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:13:00,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:13:00,590 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 00:13:00,590 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:13:00,590 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:13:00,590 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 00:13:00,672 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-07 00:13:00,672 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-07 00:13:00,674 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-07 00:13:00,676 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:13:00,697 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 00:13:00,697 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:13:00,926 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 00:13:00,927 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:13:00,928 INFO L162 IcfgInterpreter]: Started Sifa with 13 locations of interest [2019-10-07 00:13:00,928 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:13:00,929 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:13:00,929 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:13:00,929 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:13:00,987 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-07 00:13:01,522 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2019-10-07 00:13:01,551 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-07 00:13:01,558 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 00:13:01,559 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 00:13:01,559 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 167#(and (or (and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) (and (<= 1 __VERIFIER_assert_~cond) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1) (<= |__VERIFIER_assert_#in~cond| 1))) (or (and (= |__VERIFIER_assert_#in~cond| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)))) [2019-10-07 00:13:01,559 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 172#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) [2019-10-07 00:13:01,564 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 181#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 00:13:01,565 INFO L193 IcfgInterpreter]: Reachable states at location L17-3 satisfy 147#(<= 0 main_~i~0) [2019-10-07 00:13:01,567 INFO L193 IcfgInterpreter]: Reachable states at location L25 satisfy 157#(and (<= 0 main_~j~0) (<= 0 main_~i~0) (= main_~x~0 0) (< main_~x~0 main_~j~0) (<= 100000 main_~i~0) (= |main_#t~mem7| (select (select |#memory_int| |main_~#C~0.base|) (+ (* 4 main_~x~0) |main_~#C~0.offset|))) (not (< main_~i~0 100000)) (<= main_~x~0 0) (<= 0 main_~x~0)) [2019-10-07 00:13:01,567 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 00:13:01,567 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 00:13:01,568 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 186#(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 00:13:01,568 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 00:13:01,568 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 162#(and (or (and (<= 1 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1)) (and (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0))) (or (= |__VERIFIER_assert_#in~cond| 0) (= |__VERIFIER_assert_#in~cond| 1))) [2019-10-07 00:13:01,569 INFO L193 IcfgInterpreter]: Reachable states at location L12-3 satisfy 72#true [2019-10-07 00:13:01,569 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 177#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) [2019-10-07 00:13:01,570 INFO L193 IcfgInterpreter]: Reachable states at location L24-3 satisfy 152#(and (<= 0 main_~i~0) (= main_~x~0 0) (<= 100000 main_~i~0) (not (< main_~i~0 100000)) (<= main_~x~0 0) (<= 0 main_~x~0)) [2019-10-07 00:13:02,059 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 00:13:02,059 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13, 11] total 35 [2019-10-07 00:13:02,060 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2019-10-07 00:13:02,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2019-10-07 00:13:02,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=860, Unknown=0, NotChecked=0, Total=1190 [2019-10-07 00:13:02,064 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 35 states. [2019-10-07 00:13:03,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:13:03,543 INFO L93 Difference]: Finished difference Result 92 states and 126 transitions. [2019-10-07 00:13:03,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-10-07 00:13:03,549 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 32 [2019-10-07 00:13:03,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:13:03,550 INFO L225 Difference]: With dead ends: 92 [2019-10-07 00:13:03,550 INFO L226 Difference]: Without dead ends: 69 [2019-10-07 00:13:03,553 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1009 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=979, Invalid=3053, Unknown=0, NotChecked=0, Total=4032 [2019-10-07 00:13:03,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2019-10-07 00:13:03,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 63. [2019-10-07 00:13:03,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2019-10-07 00:13:03,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2019-10-07 00:13:03,569 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 32 [2019-10-07 00:13:03,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:13:03,569 INFO L462 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2019-10-07 00:13:03,569 INFO L463 AbstractCegarLoop]: Interpolant automaton has 35 states. [2019-10-07 00:13:03,570 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2019-10-07 00:13:03,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-10-07 00:13:03,571 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:13:03,572 INFO L385 BasicCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:13:03,784 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:13:03,784 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:13:03,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:13:03,785 INFO L82 PathProgramCache]: Analyzing trace with hash -581051511, now seen corresponding path program 4 times [2019-10-07 00:13:03,785 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:13:03,786 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:13:03,786 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:13:03,786 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:13:03,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:13:04,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:13:04,346 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 00:13:04,346 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:13:04,346 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:13:04,346 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 00:13:04,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:13:04,458 INFO L256 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 24 conjunts are in the unsatisfiable core [2019-10-07 00:13:04,463 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:13:04,491 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 00:13:04,491 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:13:05,263 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 00:13:05,263 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:13:05,265 INFO L162 IcfgInterpreter]: Started Sifa with 13 locations of interest [2019-10-07 00:13:05,265 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:13:05,265 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:13:05,266 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:13:05,266 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:13:05,299 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-07 00:13:05,733 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2019-10-07 00:13:05,745 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-07 00:13:05,748 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 00:13:05,749 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 00:13:05,749 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 167#(and (or (and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) (and (<= 1 __VERIFIER_assert_~cond) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1) (<= |__VERIFIER_assert_#in~cond| 1))) (or (and (= |__VERIFIER_assert_#in~cond| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)))) [2019-10-07 00:13:05,749 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 172#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) [2019-10-07 00:13:05,749 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 181#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 00:13:05,749 INFO L193 IcfgInterpreter]: Reachable states at location L17-3 satisfy 147#(<= 0 main_~i~0) [2019-10-07 00:13:05,750 INFO L193 IcfgInterpreter]: Reachable states at location L25 satisfy 157#(and (<= 0 main_~j~0) (<= 0 main_~i~0) (= main_~x~0 0) (< main_~x~0 main_~j~0) (<= 100000 main_~i~0) (= |main_#t~mem7| (select (select |#memory_int| |main_~#C~0.base|) (+ (* 4 main_~x~0) |main_~#C~0.offset|))) (not (< main_~i~0 100000)) (<= main_~x~0 0) (<= 0 main_~x~0)) [2019-10-07 00:13:05,750 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 00:13:05,750 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 00:13:05,750 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 186#(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 00:13:05,750 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 00:13:05,751 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 162#(and (or (and (<= 1 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1)) (and (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0))) (or (= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| 0))) [2019-10-07 00:13:05,751 INFO L193 IcfgInterpreter]: Reachable states at location L12-3 satisfy 72#true [2019-10-07 00:13:05,751 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 177#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) [2019-10-07 00:13:05,751 INFO L193 IcfgInterpreter]: Reachable states at location L24-3 satisfy 152#(and (<= 0 main_~i~0) (= main_~x~0 0) (<= 100000 main_~i~0) (not (< main_~i~0 100000)) (<= main_~x~0 0) (<= 0 main_~x~0)) [2019-10-07 00:13:06,164 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 00:13:06,165 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25, 11] total 59 [2019-10-07 00:13:06,167 INFO L442 AbstractCegarLoop]: Interpolant automaton has 59 states [2019-10-07 00:13:06,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2019-10-07 00:13:06,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1206, Invalid=2216, Unknown=0, NotChecked=0, Total=3422 [2019-10-07 00:13:06,171 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 59 states. [2019-10-07 00:13:09,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:13:09,441 INFO L93 Difference]: Finished difference Result 152 states and 210 transitions. [2019-10-07 00:13:09,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2019-10-07 00:13:09,442 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 56 [2019-10-07 00:13:09,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:13:09,444 INFO L225 Difference]: With dead ends: 152 [2019-10-07 00:13:09,445 INFO L226 Difference]: Without dead ends: 117 [2019-10-07 00:13:09,448 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2755 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=3607, Invalid=8825, Unknown=0, NotChecked=0, Total=12432 [2019-10-07 00:13:09,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2019-10-07 00:13:09,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 111. [2019-10-07 00:13:09,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2019-10-07 00:13:09,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 115 transitions. [2019-10-07 00:13:09,467 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 115 transitions. Word has length 56 [2019-10-07 00:13:09,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:13:09,467 INFO L462 AbstractCegarLoop]: Abstraction has 111 states and 115 transitions. [2019-10-07 00:13:09,467 INFO L463 AbstractCegarLoop]: Interpolant automaton has 59 states. [2019-10-07 00:13:09,467 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 115 transitions. [2019-10-07 00:13:09,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-10-07 00:13:09,470 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:13:09,471 INFO L385 BasicCegarLoop]: trace histogram [46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:13:09,673 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:13:09,674 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:13:09,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:13:09,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1405084681, now seen corresponding path program 5 times [2019-10-07 00:13:09,675 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:13:09,675 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:13:09,676 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:13:09,676 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:13:09,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:13:10,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:13:11,052 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 00:13:11,052 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:13:11,052 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:13:11,052 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