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_password_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:35:46,007 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:35:46,009 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:35:46,028 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:35:46,028 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:35:46,030 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:35:46,032 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:35:46,044 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:35:46,046 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:35:46,048 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:35:46,049 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:35:46,052 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:35:46,052 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:35:46,053 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:35:46,054 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:35:46,056 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:35:46,056 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:35:46,057 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:35:46,059 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:35:46,066 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:35:46,069 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:35:46,071 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:35:46,072 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:35:46,073 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:35:46,076 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 21:35:46,088 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:35:46,090 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:35:46,093 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:35:46,093 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:35:46,111 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:35:46,112 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:35:46,113 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:35:46,113 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:35:46,113 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:35:46,114 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:35:46,114 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:35:46,114 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:35:46,114 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:35:46,114 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:35:46,114 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:35:46,114 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:35:46,115 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:35:46,115 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:35:46,115 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:35:46,115 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:35:46,116 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:35:46,117 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:35:46,117 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:35:46,117 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:35:46,117 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:35:46,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:35:46,118 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:35:46,118 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:35:46,118 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:35:46,118 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:35:46,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:35:46,119 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:35:46,119 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 21:35:46,373 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:35:46,386 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:35:46,389 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:35:46,391 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:35:46,391 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:35:46,392 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_password_ground.i [2019-10-13 21:35:46,448 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bbe75f38/069fc488560c43fc8b2e7d52edaf622a/FLAGc19403678 [2019-10-13 21:35:46,827 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:35:46,828 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_password_ground.i [2019-10-13 21:35:46,834 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bbe75f38/069fc488560c43fc8b2e7d52edaf622a/FLAGc19403678 [2019-10-13 21:35:47,269 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bbe75f38/069fc488560c43fc8b2e7d52edaf622a [2019-10-13 21:35:47,279 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:35:47,280 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:35:47,282 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:35:47,282 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:35:47,285 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:35:47,286 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:35:47" (1/1) ... [2019-10-13 21:35:47,288 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cfed6bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:35:47, skipping insertion in model container [2019-10-13 21:35:47,289 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:35:47" (1/1) ... [2019-10-13 21:35:47,296 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:35:47,311 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:35:47,496 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:35:47,500 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:35:47,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:35:47,543 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:35:47,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:35:47 WrapperNode [2019-10-13 21:35:47,544 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:35:47,544 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:35:47,545 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:35:47,545 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:35:47,636 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:35:47" (1/1) ... [2019-10-13 21:35:47,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:35:47" (1/1) ... [2019-10-13 21:35:47,646 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:35:47" (1/1) ... [2019-10-13 21:35:47,648 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:35:47" (1/1) ... [2019-10-13 21:35:47,670 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:35:47" (1/1) ... [2019-10-13 21:35:47,677 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:35:47" (1/1) ... [2019-10-13 21:35:47,685 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:35:47" (1/1) ... [2019-10-13 21:35:47,688 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:35:47,689 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:35:47,689 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:35:47,689 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:35:47,692 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:35:47" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:35:47,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:35:47,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:35:47,759 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 21:35:47,760 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:35:47,760 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:35:47,760 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 21:35:47,761 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:35:47,761 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:35:47,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:35:47,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:35:47,761 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:35:47,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:35:47,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:35:47,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:35:48,237 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:35:48,238 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-13 21:35:48,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:35:48 BoogieIcfgContainer [2019-10-13 21:35:48,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:35:48,241 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:35:48,241 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:35:48,244 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:35:48,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:35:47" (1/3) ... [2019-10-13 21:35:48,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@839aa35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:35:48, skipping insertion in model container [2019-10-13 21:35:48,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:35:47" (2/3) ... [2019-10-13 21:35:48,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@839aa35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:35:48, skipping insertion in model container [2019-10-13 21:35:48,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:35:48" (3/3) ... [2019-10-13 21:35:48,248 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_password_ground.i [2019-10-13 21:35:48,258 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:35:48,266 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:35:48,277 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:35:48,298 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:35:48,298 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:35:48,299 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:35:48,299 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:35:48,299 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:35:48,299 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:35:48,299 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:35:48,299 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:35:48,313 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-10-13 21:35:48,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-13 21:35:48,319 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:35:48,319 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:35:48,321 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:35:48,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:35:48,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1967025528, now seen corresponding path program 1 times [2019-10-13 21:35:48,337 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:35:48,338 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124633766] [2019-10-13 21:35:48,338 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:35:48,338 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:35:48,338 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:35:48,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:35:48,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:35:48,494 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124633766] [2019-10-13 21:35:48,495 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:35:48,495 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:35:48,495 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043490251] [2019-10-13 21:35:48,500 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:35:48,500 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:35:48,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:35:48,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:35:48,516 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 3 states. [2019-10-13 21:35:48,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:35:48,580 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions. [2019-10-13 21:35:48,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:35:48,583 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-10-13 21:35:48,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:35:48,591 INFO L225 Difference]: With dead ends: 38 [2019-10-13 21:35:48,592 INFO L226 Difference]: Without dead ends: 19 [2019-10-13 21:35:48,595 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:35:48,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-10-13 21:35:48,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-10-13 21:35:48,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-10-13 21:35:48,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2019-10-13 21:35:48,638 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 13 [2019-10-13 21:35:48,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:35:48,639 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2019-10-13 21:35:48,639 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:35:48,639 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2019-10-13 21:35:48,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-13 21:35:48,641 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:35:48,641 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:35:48,643 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:35:48,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:35:48,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1900792287, now seen corresponding path program 1 times [2019-10-13 21:35:48,644 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:35:48,645 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286748796] [2019-10-13 21:35:48,645 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:35:48,646 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:35:48,646 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:35:48,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:35:48,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 21:35:48,774 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286748796] [2019-10-13 21:35:48,774 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14306582] [2019-10-13 21:35:48,775 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:35:48,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:35:48,829 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:35:48,835 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:35:48,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 21:35:48,866 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:35:48,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 21:35:48,902 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [456963557] [2019-10-13 21:35:48,924 INFO L162 IcfgInterpreter]: Started Sifa with 14 locations of interest [2019-10-13 21:35:48,924 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:35:48,930 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:35:48,938 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:35:48,939 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:35:49,109 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 21:35:49,470 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 29 for LOIs [2019-10-13 21:35:49,483 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:35:49,489 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:35:49,490 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:35:49,490 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 139#(and (exists ((v_prenex_4 Int) (|v_main_~#password~0.base_BEFORE_CALL_1| Int) (v_prenex_2 Int) (v_prenex_3 Int) (|v_main_~#guess~0.offset_BEFORE_CALL_1| Int) (v_prenex_1 Int) (|v_main_~#password~0.offset_BEFORE_CALL_1| Int) (|v_main_~#guess~0.base_BEFORE_CALL_1| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#password~0.base_BEFORE_CALL_1|) |v_main_~#password~0.offset_BEFORE_CALL_1|) (select (select |#memory_int| |v_main_~#guess~0.base_BEFORE_CALL_1|) |v_main_~#guess~0.offset_BEFORE_CALL_1|))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| v_prenex_1) v_prenex_3) (select (select |#memory_int| v_prenex_4) v_prenex_2)))))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:35:49,490 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 144#(and (<= __VERIFIER_assert_~cond 0) (exists ((v_prenex_4 Int) (|v_main_~#password~0.base_BEFORE_CALL_1| Int) (v_prenex_2 Int) (v_prenex_3 Int) (|v_main_~#guess~0.offset_BEFORE_CALL_1| Int) (v_prenex_1 Int) (|v_main_~#password~0.offset_BEFORE_CALL_1| Int) (|v_main_~#guess~0.base_BEFORE_CALL_1| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#password~0.base_BEFORE_CALL_1|) |v_main_~#password~0.offset_BEFORE_CALL_1|) (select (select |#memory_int| |v_main_~#guess~0.base_BEFORE_CALL_1|) |v_main_~#guess~0.offset_BEFORE_CALL_1|))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| v_prenex_1) v_prenex_3) (select (select |#memory_int| v_prenex_4) v_prenex_2)))))) (<= 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)) [2019-10-13 21:35:49,491 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 153#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:35:49,491 INFO L193 IcfgInterpreter]: Reachable states at location L17-4 satisfy 119#(and (<= 0 main_~i~0) (<= 100000 main_~i~0) (not (< main_~i~0 100000))) [2019-10-13 21:35:49,491 INFO L193 IcfgInterpreter]: Reachable states at location L17-3 satisfy 114#(<= 0 main_~i~0) [2019-10-13 21:35:49,491 INFO L193 IcfgInterpreter]: Reachable states at location L25 satisfy 129#(and (< main_~x~0 100000) (not (= 0 main_~result~0)) (<= 0 main_~i~0) (= main_~x~0 0) (<= 100000 main_~i~0) (not (< main_~i~0 100000)) (= |main_#t~mem7| (select (select |#memory_int| |main_~#password~0.base|) (+ (* main_~x~0 4) |main_~#password~0.offset|))) (= |main_#t~mem8| (select (select |#memory_int| |main_~#guess~0.base|) (+ (* main_~x~0 4) |main_~#guess~0.offset|))) (<= main_~x~0 0) (<= 0 main_~x~0)) [2019-10-13 21:35:49,492 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:35:49,492 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:35:49,492 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 158#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:35:49,492 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:35:49,493 INFO L193 IcfgInterpreter]: Reachable states at location L11-3 satisfy 72#true [2019-10-13 21:35:49,493 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 134#(exists ((v_prenex_4 Int) (|v_main_~#password~0.base_BEFORE_CALL_1| Int) (v_prenex_2 Int) (v_prenex_3 Int) (|v_main_~#guess~0.offset_BEFORE_CALL_1| Int) (v_prenex_1 Int) (|v_main_~#password~0.offset_BEFORE_CALL_1| Int) (|v_main_~#guess~0.base_BEFORE_CALL_1| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#password~0.base_BEFORE_CALL_1|) |v_main_~#password~0.offset_BEFORE_CALL_1|) (select (select |#memory_int| |v_main_~#guess~0.base_BEFORE_CALL_1|) |v_main_~#guess~0.offset_BEFORE_CALL_1|))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| v_prenex_1) v_prenex_3) (select (select |#memory_int| v_prenex_4) v_prenex_2)))))) [2019-10-13 21:35:49,493 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 149#(and (<= __VERIFIER_assert_~cond 0) (exists ((v_prenex_4 Int) (|v_main_~#password~0.base_BEFORE_CALL_1| Int) (v_prenex_2 Int) (v_prenex_3 Int) (|v_main_~#guess~0.offset_BEFORE_CALL_1| Int) (v_prenex_1 Int) (|v_main_~#password~0.offset_BEFORE_CALL_1| Int) (|v_main_~#guess~0.base_BEFORE_CALL_1| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#password~0.base_BEFORE_CALL_1|) |v_main_~#password~0.offset_BEFORE_CALL_1|) (select (select |#memory_int| |v_main_~#guess~0.base_BEFORE_CALL_1|) |v_main_~#guess~0.offset_BEFORE_CALL_1|))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| v_prenex_1) v_prenex_3) (select (select |#memory_int| v_prenex_4) v_prenex_2)))))) (<= 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)) [2019-10-13 21:35:49,494 INFO L193 IcfgInterpreter]: Reachable states at location L24-3 satisfy 124#(and (not (= 0 main_~result~0)) (<= 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)) [2019-10-13 21:35:49,871 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 21:35:49,871 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 12] total 18 [2019-10-13 21:35:49,872 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241510116] [2019-10-13 21:35:49,874 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-13 21:35:49,875 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:35:49,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-13 21:35:49,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2019-10-13 21:35:49,876 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 18 states. [2019-10-13 21:35:50,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:35:50,537 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2019-10-13 21:35:50,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-13 21:35:50,538 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 15 [2019-10-13 21:35:50,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:35:50,539 INFO L225 Difference]: With dead ends: 46 [2019-10-13 21:35:50,539 INFO L226 Difference]: Without dead ends: 34 [2019-10-13 21:35:50,542 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=157, Invalid=713, Unknown=0, NotChecked=0, Total=870 [2019-10-13 21:35:50,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-10-13 21:35:50,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 25. [2019-10-13 21:35:50,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-10-13 21:35:50,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2019-10-13 21:35:50,559 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 15 [2019-10-13 21:35:50,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:35:50,559 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2019-10-13 21:35:50,559 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-13 21:35:50,560 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2019-10-13 21:35:50,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-13 21:35:50,562 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:35:50,562 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:35:50,770 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:35:50,770 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:35:50,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:35:50,770 INFO L82 PathProgramCache]: Analyzing trace with hash -365657160, now seen corresponding path program 2 times [2019-10-13 21:35:50,770 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:35:50,771 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604600084] [2019-10-13 21:35:50,771 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:35:50,771 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:35:50,771 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:35:50,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:35:50,888 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 21:35:50,888 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604600084] [2019-10-13 21:35:50,888 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993081583] [2019-10-13 21:35:50,889 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:35:50,946 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-10-13 21:35:50,946 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:35:50,947 INFO L256 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:35:50,949 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:35:50,966 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 21:35:50,966 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:35:51,022 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 21:35:51,023 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [415226790] [2019-10-13 21:35:51,024 INFO L162 IcfgInterpreter]: Started Sifa with 14 locations of interest [2019-10-13 21:35:51,024 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:35:51,025 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:35:51,025 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:35:51,025 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:35:51,071 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 21:35:51,255 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 29 for LOIs [2019-10-13 21:35:51,265 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:35:51,270 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:35:51,271 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:35:51,271 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 139#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (exists ((|v_main_~#guess~0.offset_BEFORE_CALL_2| Int) (|v_main_~#password~0.base_BEFORE_CALL_2| Int) (v_prenex_6 Int) (v_prenex_7 Int) (v_prenex_5 Int) (|v_main_~#guess~0.base_BEFORE_CALL_2| Int) (|v_main_~#password~0.offset_BEFORE_CALL_2| Int) (v_prenex_8 Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#guess~0.base_BEFORE_CALL_2|) |v_main_~#guess~0.offset_BEFORE_CALL_2|) (select (select |#memory_int| |v_main_~#password~0.base_BEFORE_CALL_2|) |v_main_~#password~0.offset_BEFORE_CALL_2|))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| v_prenex_7) v_prenex_5) (select (select |#memory_int| v_prenex_6) v_prenex_8))))))) [2019-10-13 21:35:51,272 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 144#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (exists ((|v_main_~#guess~0.offset_BEFORE_CALL_2| Int) (|v_main_~#password~0.base_BEFORE_CALL_2| Int) (v_prenex_6 Int) (v_prenex_7 Int) (v_prenex_5 Int) (|v_main_~#guess~0.base_BEFORE_CALL_2| Int) (|v_main_~#password~0.offset_BEFORE_CALL_2| Int) (v_prenex_8 Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#guess~0.base_BEFORE_CALL_2|) |v_main_~#guess~0.offset_BEFORE_CALL_2|) (select (select |#memory_int| |v_main_~#password~0.base_BEFORE_CALL_2|) |v_main_~#password~0.offset_BEFORE_CALL_2|))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| v_prenex_7) v_prenex_5) (select (select |#memory_int| v_prenex_6) v_prenex_8))))))) [2019-10-13 21:35:51,272 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 153#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:35:51,272 INFO L193 IcfgInterpreter]: Reachable states at location L17-4 satisfy 119#(and (<= 0 main_~i~0) (<= 100000 main_~i~0) (not (< main_~i~0 100000))) [2019-10-13 21:35:51,272 INFO L193 IcfgInterpreter]: Reachable states at location L17-3 satisfy 114#(<= 0 main_~i~0) [2019-10-13 21:35:51,273 INFO L193 IcfgInterpreter]: Reachable states at location L25 satisfy 129#(and (< main_~x~0 100000) (not (= 0 main_~result~0)) (<= 0 main_~i~0) (= main_~x~0 0) (<= 100000 main_~i~0) (not (< main_~i~0 100000)) (= |main_#t~mem7| (select (select |#memory_int| |main_~#password~0.base|) (+ (* main_~x~0 4) |main_~#password~0.offset|))) (= |main_#t~mem8| (select (select |#memory_int| |main_~#guess~0.base|) (+ (* main_~x~0 4) |main_~#guess~0.offset|))) (<= main_~x~0 0) (<= 0 main_~x~0)) [2019-10-13 21:35:51,273 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:35:51,273 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:35:51,273 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 158#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:35:51,274 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:35:51,274 INFO L193 IcfgInterpreter]: Reachable states at location L11-3 satisfy 72#true [2019-10-13 21:35:51,274 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 134#(exists ((|v_main_~#guess~0.offset_BEFORE_CALL_2| Int) (|v_main_~#password~0.base_BEFORE_CALL_2| Int) (v_prenex_6 Int) (v_prenex_7 Int) (v_prenex_5 Int) (|v_main_~#guess~0.base_BEFORE_CALL_2| Int) (|v_main_~#password~0.offset_BEFORE_CALL_2| Int) (v_prenex_8 Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#guess~0.base_BEFORE_CALL_2|) |v_main_~#guess~0.offset_BEFORE_CALL_2|) (select (select |#memory_int| |v_main_~#password~0.base_BEFORE_CALL_2|) |v_main_~#password~0.offset_BEFORE_CALL_2|))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| v_prenex_7) v_prenex_5) (select (select |#memory_int| v_prenex_6) v_prenex_8)))))) [2019-10-13 21:35:51,274 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 149#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (exists ((|v_main_~#guess~0.offset_BEFORE_CALL_2| Int) (|v_main_~#password~0.base_BEFORE_CALL_2| Int) (v_prenex_6 Int) (v_prenex_7 Int) (v_prenex_5 Int) (|v_main_~#guess~0.base_BEFORE_CALL_2| Int) (|v_main_~#password~0.offset_BEFORE_CALL_2| Int) (v_prenex_8 Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#guess~0.base_BEFORE_CALL_2|) |v_main_~#guess~0.offset_BEFORE_CALL_2|) (select (select |#memory_int| |v_main_~#password~0.base_BEFORE_CALL_2|) |v_main_~#password~0.offset_BEFORE_CALL_2|))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| v_prenex_7) v_prenex_5) (select (select |#memory_int| v_prenex_6) v_prenex_8))))))) [2019-10-13 21:35:51,275 INFO L193 IcfgInterpreter]: Reachable states at location L24-3 satisfy 124#(and (not (= 0 main_~result~0)) (<= 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)) [2019-10-13 21:35:51,657 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 21:35:51,657 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 12] total 24 [2019-10-13 21:35:51,658 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786776021] [2019-10-13 21:35:51,659 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-10-13 21:35:51,659 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:35:51,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-10-13 21:35:51,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2019-10-13 21:35:51,660 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 24 states. [2019-10-13 21:35:52,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:35:52,441 INFO L93 Difference]: Finished difference Result 61 states and 76 transitions. [2019-10-13 21:35:52,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-10-13 21:35:52,443 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 21 [2019-10-13 21:35:52,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:35:52,454 INFO L225 Difference]: With dead ends: 61 [2019-10-13 21:35:52,454 INFO L226 Difference]: Without dead ends: 46 [2019-10-13 21:35:52,455 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=328, Invalid=1394, Unknown=0, NotChecked=0, Total=1722 [2019-10-13 21:35:52,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-10-13 21:35:52,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 37. [2019-10-13 21:35:52,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-10-13 21:35:52,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2019-10-13 21:35:52,464 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 21 [2019-10-13 21:35:52,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:35:52,464 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2019-10-13 21:35:52,465 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-10-13 21:35:52,465 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2019-10-13 21:35:52,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-10-13 21:35:52,466 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:35:52,466 INFO L380 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:35:52,675 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:35:52,676 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:35:52,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:35:52,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1691275544, now seen corresponding path program 3 times [2019-10-13 21:35:52,677 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:35:52,678 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414198430] [2019-10-13 21:35:52,678 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:35:52,678 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:35:52,679 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:35:52,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:35:52,862 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-13 21:35:52,863 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414198430] [2019-10-13 21:35:52,863 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971769065] [2019-10-13 21:35:52,863 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:35:52,933 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-13 21:35:52,933 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:35:52,935 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-13 21:35:52,937 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:35:52,954 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-13 21:35:52,954 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:35:53,154 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-13 21:35:53,154 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [72204004] [2019-10-13 21:35:53,156 INFO L162 IcfgInterpreter]: Started Sifa with 14 locations of interest [2019-10-13 21:35:53,157 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:35:53,157 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:35:53,157 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:35:53,158 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:35:53,202 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 21:35:53,328 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 29 for LOIs [2019-10-13 21:35:53,336 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:35:53,341 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:35:53,341 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:35:53,341 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 139#(and (exists ((|v_main_~#guess~0.offset_BEFORE_CALL_3| Int) (|v_main_~#password~0.base_BEFORE_CALL_3| Int) (v_prenex_12 Int) (v_prenex_11 Int) (v_prenex_10 Int) (|v_main_~#guess~0.base_BEFORE_CALL_3| Int) (|v_main_~#password~0.offset_BEFORE_CALL_3| Int) (v_prenex_9 Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#guess~0.base_BEFORE_CALL_3|) |v_main_~#guess~0.offset_BEFORE_CALL_3|) (select (select |#memory_int| |v_main_~#password~0.base_BEFORE_CALL_3|) |v_main_~#password~0.offset_BEFORE_CALL_3|)))) (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| v_prenex_11) v_prenex_9) (select (select |#memory_int| v_prenex_10) v_prenex_12))))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:35:53,341 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 144#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_main_~#guess~0.offset_BEFORE_CALL_3| Int) (|v_main_~#password~0.base_BEFORE_CALL_3| Int) (v_prenex_12 Int) (v_prenex_11 Int) (v_prenex_10 Int) (|v_main_~#guess~0.base_BEFORE_CALL_3| Int) (|v_main_~#password~0.offset_BEFORE_CALL_3| Int) (v_prenex_9 Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#guess~0.base_BEFORE_CALL_3|) |v_main_~#guess~0.offset_BEFORE_CALL_3|) (select (select |#memory_int| |v_main_~#password~0.base_BEFORE_CALL_3|) |v_main_~#password~0.offset_BEFORE_CALL_3|)))) (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| v_prenex_11) v_prenex_9) (select (select |#memory_int| v_prenex_10) v_prenex_12))))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:35:53,342 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 153#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:35:53,342 INFO L193 IcfgInterpreter]: Reachable states at location L17-4 satisfy 119#(and (<= 0 main_~i~0) (<= 100000 main_~i~0) (not (< main_~i~0 100000))) [2019-10-13 21:35:53,342 INFO L193 IcfgInterpreter]: Reachable states at location L17-3 satisfy 114#(<= 0 main_~i~0) [2019-10-13 21:35:53,342 INFO L193 IcfgInterpreter]: Reachable states at location L25 satisfy 129#(and (< main_~x~0 100000) (not (= 0 main_~result~0)) (<= 0 main_~i~0) (= main_~x~0 0) (<= 100000 main_~i~0) (not (< main_~i~0 100000)) (= |main_#t~mem7| (select (select |#memory_int| |main_~#password~0.base|) (+ (* main_~x~0 4) |main_~#password~0.offset|))) (= |main_#t~mem8| (select (select |#memory_int| |main_~#guess~0.base|) (+ (* main_~x~0 4) |main_~#guess~0.offset|))) (<= main_~x~0 0) (<= 0 main_~x~0)) [2019-10-13 21:35:53,343 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:35:53,343 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:35:53,346 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 158#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:35:53,346 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:35:53,347 INFO L193 IcfgInterpreter]: Reachable states at location L11-3 satisfy 72#true [2019-10-13 21:35:53,347 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 134#(exists ((|v_main_~#guess~0.offset_BEFORE_CALL_3| Int) (|v_main_~#password~0.base_BEFORE_CALL_3| Int) (v_prenex_12 Int) (v_prenex_11 Int) (v_prenex_10 Int) (|v_main_~#guess~0.base_BEFORE_CALL_3| Int) (|v_main_~#password~0.offset_BEFORE_CALL_3| Int) (v_prenex_9 Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#guess~0.base_BEFORE_CALL_3|) |v_main_~#guess~0.offset_BEFORE_CALL_3|) (select (select |#memory_int| |v_main_~#password~0.base_BEFORE_CALL_3|) |v_main_~#password~0.offset_BEFORE_CALL_3|)))) (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| v_prenex_11) v_prenex_9) (select (select |#memory_int| v_prenex_10) v_prenex_12))))) [2019-10-13 21:35:53,347 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 149#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_main_~#guess~0.offset_BEFORE_CALL_3| Int) (|v_main_~#password~0.base_BEFORE_CALL_3| Int) (v_prenex_12 Int) (v_prenex_11 Int) (v_prenex_10 Int) (|v_main_~#guess~0.base_BEFORE_CALL_3| Int) (|v_main_~#password~0.offset_BEFORE_CALL_3| Int) (v_prenex_9 Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#guess~0.base_BEFORE_CALL_3|) |v_main_~#guess~0.offset_BEFORE_CALL_3|) (select (select |#memory_int| |v_main_~#password~0.base_BEFORE_CALL_3|) |v_main_~#password~0.offset_BEFORE_CALL_3|)))) (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| v_prenex_11) v_prenex_9) (select (select |#memory_int| v_prenex_10) v_prenex_12))))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:35:53,347 INFO L193 IcfgInterpreter]: Reachable states at location L24-3 satisfy 124#(and (not (= 0 main_~result~0)) (<= 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)) [2019-10-13 21:35:53,723 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 21:35:53,723 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13, 12] total 36 [2019-10-13 21:35:53,724 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840620980] [2019-10-13 21:35:53,724 INFO L442 AbstractCegarLoop]: Interpolant automaton has 36 states [2019-10-13 21:35:53,725 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:35:53,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2019-10-13 21:35:53,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=925, Unknown=0, NotChecked=0, Total=1260 [2019-10-13 21:35:53,726 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 36 states. [2019-10-13 21:35:55,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:35:55,130 INFO L93 Difference]: Finished difference Result 91 states and 118 transitions. [2019-10-13 21:35:55,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-10-13 21:35:55,130 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 33 [2019-10-13 21:35:55,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:35:55,131 INFO L225 Difference]: With dead ends: 91 [2019-10-13 21:35:55,132 INFO L226 Difference]: Without dead ends: 70 [2019-10-13 21:35:55,133 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1114 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=994, Invalid=3296, Unknown=0, NotChecked=0, Total=4290 [2019-10-13 21:35:55,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2019-10-13 21:35:55,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 61. [2019-10-13 21:35:55,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-10-13 21:35:55,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2019-10-13 21:35:55,148 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 33 [2019-10-13 21:35:55,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:35:55,148 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2019-10-13 21:35:55,148 INFO L463 AbstractCegarLoop]: Interpolant automaton has 36 states. [2019-10-13 21:35:55,148 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2019-10-13 21:35:55,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-13 21:35:55,152 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:35:55,153 INFO L380 BasicCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:35:55,356 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:35:55,357 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:35:55,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:35:55,357 INFO L82 PathProgramCache]: Analyzing trace with hash 24224728, now seen corresponding path program 4 times [2019-10-13 21:35:55,357 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:35:55,358 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073749379] [2019-10-13 21:35:55,358 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:35:55,358 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:35:55,359 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:35:55,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:35:55,772 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2019-10-13 21:35:55,773 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073749379] [2019-10-13 21:35:55,773 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640821891] [2019-10-13 21:35:55,773 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:35:55,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:35:55,904 INFO L256 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 24 conjunts are in the unsatisfiable core [2019-10-13 21:35:55,910 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:35:55,928 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2019-10-13 21:35:55,929 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:35:56,675 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2019-10-13 21:35:56,676 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1146747212] [2019-10-13 21:35:56,677 INFO L162 IcfgInterpreter]: Started Sifa with 14 locations of interest [2019-10-13 21:35:56,678 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:35:56,678 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:35:56,678 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:35:56,678 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:35:56,718 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 21:35:56,845 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 29 for LOIs [2019-10-13 21:35:56,854 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:35:56,858 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:35:56,859 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:35:56,859 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 139#(and (exists ((v_prenex_16 Int) (v_prenex_15 Int) (|v_main_~#guess~0.offset_BEFORE_CALL_4| Int) (|v_main_~#password~0.base_BEFORE_CALL_4| Int) (v_prenex_14 Int) (v_prenex_13 Int) (|v_main_~#guess~0.base_BEFORE_CALL_4| Int) (|v_main_~#password~0.offset_BEFORE_CALL_4| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#guess~0.base_BEFORE_CALL_4|) |v_main_~#guess~0.offset_BEFORE_CALL_4|) (select (select |#memory_int| |v_main_~#password~0.base_BEFORE_CALL_4|) |v_main_~#password~0.offset_BEFORE_CALL_4|)))) (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| v_prenex_15) v_prenex_13) (select (select |#memory_int| v_prenex_14) v_prenex_16))))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:35:56,859 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 144#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond) (exists ((v_prenex_16 Int) (v_prenex_15 Int) (|v_main_~#guess~0.offset_BEFORE_CALL_4| Int) (|v_main_~#password~0.base_BEFORE_CALL_4| Int) (v_prenex_14 Int) (v_prenex_13 Int) (|v_main_~#guess~0.base_BEFORE_CALL_4| Int) (|v_main_~#password~0.offset_BEFORE_CALL_4| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#guess~0.base_BEFORE_CALL_4|) |v_main_~#guess~0.offset_BEFORE_CALL_4|) (select (select |#memory_int| |v_main_~#password~0.base_BEFORE_CALL_4|) |v_main_~#password~0.offset_BEFORE_CALL_4|)))) (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| v_prenex_15) v_prenex_13) (select (select |#memory_int| v_prenex_14) v_prenex_16))))) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:35:56,859 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 153#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:35:56,860 INFO L193 IcfgInterpreter]: Reachable states at location L17-4 satisfy 119#(and (<= 0 main_~i~0) (<= 100000 main_~i~0) (not (< main_~i~0 100000))) [2019-10-13 21:35:56,860 INFO L193 IcfgInterpreter]: Reachable states at location L17-3 satisfy 114#(<= 0 main_~i~0) [2019-10-13 21:35:56,860 INFO L193 IcfgInterpreter]: Reachable states at location L25 satisfy 129#(and (< main_~x~0 100000) (not (= 0 main_~result~0)) (<= 0 main_~i~0) (= main_~x~0 0) (<= 100000 main_~i~0) (not (< main_~i~0 100000)) (= |main_#t~mem7| (select (select |#memory_int| |main_~#password~0.base|) (+ (* main_~x~0 4) |main_~#password~0.offset|))) (= |main_#t~mem8| (select (select |#memory_int| |main_~#guess~0.base|) (+ (* main_~x~0 4) |main_~#guess~0.offset|))) (<= main_~x~0 0) (<= 0 main_~x~0)) [2019-10-13 21:35:56,860 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:35:56,860 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:35:56,861 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 158#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:35:56,861 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:35:56,861 INFO L193 IcfgInterpreter]: Reachable states at location L11-3 satisfy 72#true [2019-10-13 21:35:56,861 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 134#(exists ((v_prenex_16 Int) (v_prenex_15 Int) (|v_main_~#guess~0.offset_BEFORE_CALL_4| Int) (|v_main_~#password~0.base_BEFORE_CALL_4| Int) (v_prenex_14 Int) (v_prenex_13 Int) (|v_main_~#guess~0.base_BEFORE_CALL_4| Int) (|v_main_~#password~0.offset_BEFORE_CALL_4| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#guess~0.base_BEFORE_CALL_4|) |v_main_~#guess~0.offset_BEFORE_CALL_4|) (select (select |#memory_int| |v_main_~#password~0.base_BEFORE_CALL_4|) |v_main_~#password~0.offset_BEFORE_CALL_4|)))) (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| v_prenex_15) v_prenex_13) (select (select |#memory_int| v_prenex_14) v_prenex_16))))) [2019-10-13 21:35:56,862 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 149#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond) (exists ((v_prenex_16 Int) (v_prenex_15 Int) (|v_main_~#guess~0.offset_BEFORE_CALL_4| Int) (|v_main_~#password~0.base_BEFORE_CALL_4| Int) (v_prenex_14 Int) (v_prenex_13 Int) (|v_main_~#guess~0.base_BEFORE_CALL_4| Int) (|v_main_~#password~0.offset_BEFORE_CALL_4| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#guess~0.base_BEFORE_CALL_4|) |v_main_~#guess~0.offset_BEFORE_CALL_4|) (select (select |#memory_int| |v_main_~#password~0.base_BEFORE_CALL_4|) |v_main_~#password~0.offset_BEFORE_CALL_4|)))) (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| v_prenex_15) v_prenex_13) (select (select |#memory_int| v_prenex_14) v_prenex_16))))) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:35:56,862 INFO L193 IcfgInterpreter]: Reachable states at location L24-3 satisfy 124#(and (not (= 0 main_~result~0)) (<= 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)) [2019-10-13 21:35:57,357 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 21:35:57,358 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25, 12] total 60 [2019-10-13 21:35:57,358 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297294481] [2019-10-13 21:35:57,359 INFO L442 AbstractCegarLoop]: Interpolant automaton has 60 states [2019-10-13 21:35:57,360 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:35:57,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2019-10-13 21:35:57,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1211, Invalid=2329, Unknown=0, NotChecked=0, Total=3540 [2019-10-13 21:35:57,362 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand 60 states. [2019-10-13 21:36:00,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:36:00,645 INFO L93 Difference]: Finished difference Result 151 states and 202 transitions. [2019-10-13 21:36:00,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2019-10-13 21:36:00,646 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 57 [2019-10-13 21:36:00,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:36:00,648 INFO L225 Difference]: With dead ends: 151 [2019-10-13 21:36:00,648 INFO L226 Difference]: Without dead ends: 118 [2019-10-13 21:36:00,651 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2956 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=3622, Invalid=9260, Unknown=0, NotChecked=0, Total=12882 [2019-10-13 21:36:00,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2019-10-13 21:36:00,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 109. [2019-10-13 21:36:00,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2019-10-13 21:36:00,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 111 transitions. [2019-10-13 21:36:00,669 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 111 transitions. Word has length 57 [2019-10-13 21:36:00,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:36:00,669 INFO L462 AbstractCegarLoop]: Abstraction has 109 states and 111 transitions. [2019-10-13 21:36:00,669 INFO L463 AbstractCegarLoop]: Interpolant automaton has 60 states. [2019-10-13 21:36:00,670 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 111 transitions. [2019-10-13 21:36:00,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-10-13 21:36:00,673 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:36:00,673 INFO L380 BasicCegarLoop]: trace histogram [46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:36:00,876 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:36:00,877 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:36:00,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:36:00,877 INFO L82 PathProgramCache]: Analyzing trace with hash 227027288, now seen corresponding path program 5 times [2019-10-13 21:36:00,878 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:36:00,879 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898078182] [2019-10-13 21:36:00,879 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:36:00,879 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:36:00,880 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:36:01,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:36:02,096 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2019-10-13 21:36:02,096 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898078182] [2019-10-13 21:36:02,097 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174774181] [2019-10-13 21:36:02,097 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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