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_init7_ground-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:35:03,195 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:35:03,198 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:35:03,217 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:35:03,217 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:35:03,219 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:35:03,221 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:35:03,231 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:35:03,236 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:35:03,239 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:35:03,240 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:35:03,241 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:35:03,242 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:35:03,243 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:35:03,246 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:35:03,247 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:35:03,249 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:35:03,250 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:35:03,251 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:35:03,256 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:35:03,261 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:35:03,263 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:35:03,266 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:35:03,267 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:35:03,271 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 21:35:03,282 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:35:03,283 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:35:03,284 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:35:03,285 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 21:35:03,315 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:35:03,315 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:35:03,316 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:35:03,317 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:35:03,317 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:35:03,317 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:35:03,317 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:35:03,318 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:35:03,318 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:35:03,318 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:35:03,318 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:35:03,318 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:35:03,319 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:35:03,319 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:35:03,319 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:35:03,319 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:35:03,319 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:35:03,320 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:35:03,320 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:35:03,320 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:35:03,320 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:35:03,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:35:03,321 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:35:03,321 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:35:03,321 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:35:03,321 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:35:03,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:35:03,322 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:35:03,322 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 21:35:03,624 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:35:03,637 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:35:03,641 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:35:03,642 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:35:03,643 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:35:03,643 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_init7_ground-2.i [2019-10-13 21:35:03,714 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f39083b43/a04355c3a66d4b1aafa0e89164a25d2a/FLAG818f44409 [2019-10-13 21:35:04,170 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:35:04,171 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_init7_ground-2.i [2019-10-13 21:35:04,176 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f39083b43/a04355c3a66d4b1aafa0e89164a25d2a/FLAG818f44409 [2019-10-13 21:35:04,559 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f39083b43/a04355c3a66d4b1aafa0e89164a25d2a [2019-10-13 21:35:04,570 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:35:04,572 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:35:04,573 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:35:04,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:35:04,577 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:35:04,578 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:35:04" (1/1) ... [2019-10-13 21:35:04,581 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ae0ff3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:35:04, skipping insertion in model container [2019-10-13 21:35:04,581 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:35:04" (1/1) ... [2019-10-13 21:35:04,589 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:35:04,610 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:35:04,838 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:35:04,849 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:35:04,897 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:35:05,026 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:35:05,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:35:05 WrapperNode [2019-10-13 21:35:05,027 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:35:05,027 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:35:05,027 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:35:05,028 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:35:05,043 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:35:05" (1/1) ... [2019-10-13 21:35:05,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:35:05" (1/1) ... [2019-10-13 21:35:05,054 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:35:05" (1/1) ... [2019-10-13 21:35:05,056 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:35:05" (1/1) ... [2019-10-13 21:35:05,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:35:05" (1/1) ... [2019-10-13 21:35:05,084 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:35:05" (1/1) ... [2019-10-13 21:35:05,089 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:35:05" (1/1) ... [2019-10-13 21:35:05,092 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:35:05,092 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:35:05,092 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:35:05,092 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:35:05,095 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:35:05" (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 21:35:05,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:35:05,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:35:05,150 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 21:35:05,150 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:35:05,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:35:05,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 21:35:05,151 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:35:05,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:35:05,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:35:05,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:35:05,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:35:05,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:35:05,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:35:05,542 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:35:05,542 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-10-13 21:35:05,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:35:05 BoogieIcfgContainer [2019-10-13 21:35:05,544 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:35:05,545 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:35:05,545 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:35:05,548 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:35:05,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:35:04" (1/3) ... [2019-10-13 21:35:05,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4da50390 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:35:05, skipping insertion in model container [2019-10-13 21:35:05,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:35:05" (2/3) ... [2019-10-13 21:35:05,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4da50390 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:35:05, skipping insertion in model container [2019-10-13 21:35:05,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:35:05" (3/3) ... [2019-10-13 21:35:05,552 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_init7_ground-2.i [2019-10-13 21:35:05,570 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:35:05,577 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:35:05,589 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:35:05,614 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:35:05,614 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:35:05,614 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:35:05,615 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:35:05,615 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:35:05,615 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:35:05,615 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:35:05,615 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:35:05,634 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-10-13 21:35:05,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-13 21:35:05,639 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:35:05,640 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:35:05,642 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:35:05,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:35:05,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1872680520, now seen corresponding path program 1 times [2019-10-13 21:35:05,654 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:35:05,655 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127885859] [2019-10-13 21:35:05,655 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:35:05,655 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:35:05,655 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:35:05,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:35:05,810 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 21:35:05,811 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127885859] [2019-10-13 21:35:05,812 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:35:05,812 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:35:05,812 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531522109] [2019-10-13 21:35:05,816 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:35:05,817 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:35:05,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:35:05,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:35:05,829 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2019-10-13 21:35:05,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:35:05,922 INFO L93 Difference]: Finished difference Result 49 states and 72 transitions. [2019-10-13 21:35:05,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:35:05,924 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-10-13 21:35:05,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:35:05,933 INFO L225 Difference]: With dead ends: 49 [2019-10-13 21:35:05,933 INFO L226 Difference]: Without dead ends: 28 [2019-10-13 21:35:05,937 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 21:35:05,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-10-13 21:35:05,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-10-13 21:35:05,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-10-13 21:35:05,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2019-10-13 21:35:05,979 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 17 [2019-10-13 21:35:05,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:35:05,979 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2019-10-13 21:35:05,980 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:35:05,980 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2019-10-13 21:35:05,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-13 21:35:05,981 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:35:05,982 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:35:05,982 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:35:05,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:35:05,983 INFO L82 PathProgramCache]: Analyzing trace with hash 802380745, now seen corresponding path program 1 times [2019-10-13 21:35:05,983 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:35:05,983 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461525825] [2019-10-13 21:35:05,983 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:35:05,984 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:35:05,984 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:35:06,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:35:06,103 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 21:35:06,103 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461525825] [2019-10-13 21:35:06,104 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413241020] [2019-10-13 21:35:06,104 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 21:35:06,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:35:06,212 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:35:06,224 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:35:06,267 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 21:35:06,267 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:35:06,311 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 21:35:06,311 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [805290973] [2019-10-13 21:35:06,348 INFO L162 IcfgInterpreter]: Started Sifa with 18 locations of interest [2019-10-13 21:35:06,349 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:35:06,376 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:35:06,387 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:35:06,388 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:35:06,583 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 21:35:07,996 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 28 for LOIs [2019-10-13 21:35:08,018 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:35:08,024 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:35:08,024 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:35:08,025 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 319#(and (exists ((v_prenex_1 Int) (|v_main_~#a~0.base_BEFORE_CALL_1| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (= (select (select |#memory_int| v_prenex_1) 0) 48) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_1|) 0) 48)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:35:08,025 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 324#(and (<= __VERIFIER_assert_~cond 0) (exists ((v_prenex_1 Int) (|v_main_~#a~0.base_BEFORE_CALL_1| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (= (select (select |#memory_int| v_prenex_1) 0) 48) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_1|) 0) 48)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 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)) [2019-10-13 21:35:08,025 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 333#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:35:08,026 INFO L193 IcfgInterpreter]: Reachable states at location L36-2 satisfy 299#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:35:08,026 INFO L193 IcfgInterpreter]: Reachable states at location L26-2 satisfy 223#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:35:08,026 INFO L193 IcfgInterpreter]: Reachable states at location L16-2 satisfy 147#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:35:08,026 INFO L193 IcfgInterpreter]: Reachable states at location L6-2 satisfy 71#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (= |#length| (store |old(#length)| |main_~#a~0.base| 400000)) (<= 0 main_~i~0) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (<= main_~i~0 0) (= 0 (select |old(#valid)| 0)) (= |#valid| (store |old(#valid)| |main_~#a~0.base| 1)) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0) (= main_~i~0 0))) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:35:08,027 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 21:35:08,027 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 21:35:08,028 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 338#(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 21:35:08,029 INFO L193 IcfgInterpreter]: Reachable states at location L41-3 satisfy 304#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (not (< main_~i~0 100000)) (<= main_~x~0 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 main_~x~0) (= main_~x~0 0) (<= 100000 main_~i~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:35:08,029 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:35:08,030 INFO L193 IcfgInterpreter]: Reachable states at location L31-2 satisfy 261#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:35:08,030 INFO L193 IcfgInterpreter]: Reachable states at location L21-2 satisfy 185#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:35:08,031 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 314#(exists ((v_prenex_1 Int) (|v_main_~#a~0.base_BEFORE_CALL_1| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (= (select (select |#memory_int| v_prenex_1) 0) 48) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_1|) 0) 48)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-13 21:35:08,031 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 329#(and (<= __VERIFIER_assert_~cond 0) (exists ((v_prenex_1 Int) (|v_main_~#a~0.base_BEFORE_CALL_1| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (= (select (select |#memory_int| v_prenex_1) 0) 48) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_1|) 0) 48)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 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)) [2019-10-13 21:35:08,032 INFO L193 IcfgInterpreter]: Reachable states at location L11-2 satisfy 109#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:35:08,032 INFO L193 IcfgInterpreter]: Reachable states at location L42 satisfy 309#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* main_~x~0 4) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (not (< main_~i~0 100000)) (<= main_~x~0 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 main_~x~0) (< main_~x~0 100000) (= main_~x~0 0) (<= 100000 main_~i~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:35:08,715 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 21:35:08,716 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 10] total 17 [2019-10-13 21:35:08,716 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083692267] [2019-10-13 21:35:08,723 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-10-13 21:35:08,725 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:35:08,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-10-13 21:35:08,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2019-10-13 21:35:08,727 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand 17 states. [2019-10-13 21:35:09,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:35:09,684 INFO L93 Difference]: Finished difference Result 79 states and 113 transitions. [2019-10-13 21:35:09,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 21:35:09,684 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 24 [2019-10-13 21:35:09,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:35:09,686 INFO L225 Difference]: With dead ends: 79 [2019-10-13 21:35:09,686 INFO L226 Difference]: Without dead ends: 58 [2019-10-13 21:35:09,692 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 49 SyntacticMatches, 12 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2019-10-13 21:35:09,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2019-10-13 21:35:09,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 49. [2019-10-13 21:35:09,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2019-10-13 21:35:09,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2019-10-13 21:35:09,714 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 24 [2019-10-13 21:35:09,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:35:09,715 INFO L462 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2019-10-13 21:35:09,716 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-10-13 21:35:09,716 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2019-10-13 21:35:09,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-10-13 21:35:09,718 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:35:09,718 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:35:09,923 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:35:09,925 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:35:09,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:35:09,925 INFO L82 PathProgramCache]: Analyzing trace with hash -968414200, now seen corresponding path program 2 times [2019-10-13 21:35:09,925 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:35:09,926 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052377474] [2019-10-13 21:35:09,926 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:35:09,926 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:35:09,926 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:35:10,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:35:10,129 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-10-13 21:35:10,131 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052377474] [2019-10-13 21:35:10,132 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159124991] [2019-10-13 21:35:10,132 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 21:35:10,244 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-10-13 21:35:10,244 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:35:10,246 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:35:10,249 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:35:10,260 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-10-13 21:35:10,260 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:35:10,314 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-10-13 21:35:10,315 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [892441754] [2019-10-13 21:35:10,316 INFO L162 IcfgInterpreter]: Started Sifa with 18 locations of interest [2019-10-13 21:35:10,317 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:35:10,317 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:35:10,318 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:35:10,318 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:35:10,356 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 21:35:11,193 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 28 for LOIs [2019-10-13 21:35:11,204 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:35:11,209 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:35:11,210 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:35:11,210 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 319#(and (exists ((|v_main_~#a~0.base_BEFORE_CALL_2| Int) (v_prenex_2 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (not (= 48 (select (select |#memory_int| v_prenex_2) 0))) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 48 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_2|) 0))))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:35:11,210 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 324#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_main_~#a~0.base_BEFORE_CALL_2| Int) (v_prenex_2 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (not (= 48 (select (select |#memory_int| v_prenex_2) 0))) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 48 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_2|) 0))))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:35:11,210 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 333#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:35:11,211 INFO L193 IcfgInterpreter]: Reachable states at location L36-2 satisfy 299#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:35:11,211 INFO L193 IcfgInterpreter]: Reachable states at location L26-2 satisfy 223#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:35:11,211 INFO L193 IcfgInterpreter]: Reachable states at location L16-2 satisfy 147#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:35:11,211 INFO L193 IcfgInterpreter]: Reachable states at location L6-2 satisfy 71#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (= |#length| (store |old(#length)| |main_~#a~0.base| 400000)) (<= 0 main_~i~0) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (<= main_~i~0 0) (= 0 (select |old(#valid)| 0)) (= |#valid| (store |old(#valid)| |main_~#a~0.base| 1)) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0) (= main_~i~0 0))) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:35:11,212 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 21:35:11,213 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 21:35:11,214 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 338#(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 21:35:11,214 INFO L193 IcfgInterpreter]: Reachable states at location L41-3 satisfy 304#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (not (< main_~i~0 100000)) (<= main_~x~0 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 main_~x~0) (= main_~x~0 0) (<= 100000 main_~i~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:35:11,215 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:35:11,215 INFO L193 IcfgInterpreter]: Reachable states at location L31-2 satisfy 261#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:35:11,215 INFO L193 IcfgInterpreter]: Reachable states at location L21-2 satisfy 185#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:35:11,215 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 314#(exists ((|v_main_~#a~0.base_BEFORE_CALL_2| Int) (v_prenex_2 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (not (= 48 (select (select |#memory_int| v_prenex_2) 0))) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 48 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_2|) 0))))) [2019-10-13 21:35:11,215 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 329#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_main_~#a~0.base_BEFORE_CALL_2| Int) (v_prenex_2 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (not (= 48 (select (select |#memory_int| v_prenex_2) 0))) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 48 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_2|) 0))))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:35:11,216 INFO L193 IcfgInterpreter]: Reachable states at location L11-2 satisfy 109#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:35:11,216 INFO L193 IcfgInterpreter]: Reachable states at location L42 satisfy 309#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* main_~x~0 4) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (not (< main_~i~0 100000)) (<= main_~x~0 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 main_~x~0) (< main_~x~0 100000) (= main_~x~0 0) (<= 100000 main_~i~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:35:12,021 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 21:35:12,021 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 10] total 23 [2019-10-13 21:35:12,021 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465276600] [2019-10-13 21:35:12,023 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-10-13 21:35:12,024 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:35:12,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-10-13 21:35:12,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2019-10-13 21:35:12,025 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand 23 states. [2019-10-13 21:35:13,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:35:13,323 INFO L93 Difference]: Finished difference Result 139 states and 194 transitions. [2019-10-13 21:35:13,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-13 21:35:13,325 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 45 [2019-10-13 21:35:13,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:35:13,327 INFO L225 Difference]: With dead ends: 139 [2019-10-13 21:35:13,327 INFO L226 Difference]: Without dead ends: 100 [2019-10-13 21:35:13,328 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 102 SyntacticMatches, 30 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 914 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=312, Invalid=1248, Unknown=0, NotChecked=0, Total=1560 [2019-10-13 21:35:13,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2019-10-13 21:35:13,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 91. [2019-10-13 21:35:13,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2019-10-13 21:35:13,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 98 transitions. [2019-10-13 21:35:13,345 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 98 transitions. Word has length 45 [2019-10-13 21:35:13,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:35:13,345 INFO L462 AbstractCegarLoop]: Abstraction has 91 states and 98 transitions. [2019-10-13 21:35:13,345 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-10-13 21:35:13,346 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 98 transitions. [2019-10-13 21:35:13,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-10-13 21:35:13,348 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:35:13,348 INFO L380 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:35:13,561 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:35:13,561 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:35:13,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:35:13,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1028419416, now seen corresponding path program 3 times [2019-10-13 21:35:13,563 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:35:13,563 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403526990] [2019-10-13 21:35:13,564 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:35:13,564 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:35:13,564 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:35:13,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:35:13,836 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2019-10-13 21:35:13,837 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403526990] [2019-10-13 21:35:13,837 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760396979] [2019-10-13 21:35:13,837 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 21:35:13,955 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-13 21:35:13,955 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:35:13,957 INFO L256 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-13 21:35:13,970 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:35:13,996 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2019-10-13 21:35:13,996 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:35:14,182 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2019-10-13 21:35:14,183 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1922213087] [2019-10-13 21:35:14,184 INFO L162 IcfgInterpreter]: Started Sifa with 18 locations of interest [2019-10-13 21:35:14,184 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:35:14,185 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:35:14,185 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:35:14,185 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:35:14,213 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 21:35:14,766 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 28 for LOIs [2019-10-13 21:35:14,773 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:35:14,776 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:35:14,777 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:35:14,777 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 319#(and (exists ((|v_main_~#a~0.base_BEFORE_CALL_3| Int) (v_prenex_3 Int)) (or (and (= |#NULL.base| 0) (= (select (select |#memory_int| v_prenex_3) 0) 48) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_3|) 0) 48)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:35:14,777 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 324#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_main_~#a~0.base_BEFORE_CALL_3| Int) (v_prenex_3 Int)) (or (and (= |#NULL.base| 0) (= (select (select |#memory_int| v_prenex_3) 0) 48) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_3|) 0) 48)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:35:14,778 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 333#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:35:14,778 INFO L193 IcfgInterpreter]: Reachable states at location L36-2 satisfy 299#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:35:14,778 INFO L193 IcfgInterpreter]: Reachable states at location L26-2 satisfy 223#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:35:14,778 INFO L193 IcfgInterpreter]: Reachable states at location L16-2 satisfy 147#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:35:14,778 INFO L193 IcfgInterpreter]: Reachable states at location L6-2 satisfy 71#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (= |#length| (store |old(#length)| |main_~#a~0.base| 400000)) (<= 0 main_~i~0) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (<= main_~i~0 0) (= 0 (select |old(#valid)| 0)) (= |#valid| (store |old(#valid)| |main_~#a~0.base| 1)) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0) (= main_~i~0 0))) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:35:14,779 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 21:35:14,779 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 21:35:14,779 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 338#(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 21:35:14,779 INFO L193 IcfgInterpreter]: Reachable states at location L41-3 satisfy 304#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (not (< main_~i~0 100000)) (<= main_~x~0 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 main_~x~0) (= main_~x~0 0) (<= 100000 main_~i~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:35:14,780 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:35:14,780 INFO L193 IcfgInterpreter]: Reachable states at location L31-2 satisfy 261#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:35:14,780 INFO L193 IcfgInterpreter]: Reachable states at location L21-2 satisfy 185#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:35:14,780 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 314#(exists ((|v_main_~#a~0.base_BEFORE_CALL_3| Int) (v_prenex_3 Int)) (or (and (= |#NULL.base| 0) (= (select (select |#memory_int| v_prenex_3) 0) 48) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_3|) 0) 48)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-13 21:35:14,780 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 329#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_main_~#a~0.base_BEFORE_CALL_3| Int) (v_prenex_3 Int)) (or (and (= |#NULL.base| 0) (= (select (select |#memory_int| v_prenex_3) 0) 48) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_3|) 0) 48)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:35:14,781 INFO L193 IcfgInterpreter]: Reachable states at location L11-2 satisfy 109#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:35:14,781 INFO L193 IcfgInterpreter]: Reachable states at location L42 satisfy 309#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* main_~x~0 4) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (not (< main_~i~0 100000)) (<= main_~x~0 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 main_~x~0) (< main_~x~0 100000) (= main_~x~0 0) (<= 100000 main_~i~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:35:16,186 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 21:35:16,187 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13, 10] total 35 [2019-10-13 21:35:16,187 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052067049] [2019-10-13 21:35:16,189 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2019-10-13 21:35:16,189 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:35:16,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2019-10-13 21:35:16,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=861, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:35:16,190 INFO L87 Difference]: Start difference. First operand 91 states and 98 transitions. Second operand 35 states. [2019-10-13 21:35:18,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:35:18,234 INFO L93 Difference]: Finished difference Result 259 states and 356 transitions. [2019-10-13 21:35:18,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-10-13 21:35:18,234 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 87 [2019-10-13 21:35:18,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:35:18,236 INFO L225 Difference]: With dead ends: 259 [2019-10-13 21:35:18,236 INFO L226 Difference]: Without dead ends: 184 [2019-10-13 21:35:18,239 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 175 SyntacticMatches, 66 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3317 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=978, Invalid=3054, Unknown=0, NotChecked=0, Total=4032 [2019-10-13 21:35:18,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2019-10-13 21:35:18,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 175. [2019-10-13 21:35:18,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2019-10-13 21:35:18,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 182 transitions. [2019-10-13 21:35:18,276 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 182 transitions. Word has length 87 [2019-10-13 21:35:18,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:35:18,276 INFO L462 AbstractCegarLoop]: Abstraction has 175 states and 182 transitions. [2019-10-13 21:35:18,276 INFO L463 AbstractCegarLoop]: Interpolant automaton has 35 states. [2019-10-13 21:35:18,277 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 182 transitions. [2019-10-13 21:35:18,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-13 21:35:18,282 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:35:18,287 INFO L380 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:35:18,488 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:35:18,489 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:35:18,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:35:18,489 INFO L82 PathProgramCache]: Analyzing trace with hash 521847272, now seen corresponding path program 4 times [2019-10-13 21:35:18,490 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:35:18,490 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532366899] [2019-10-13 21:35:18,491 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:35:18,491 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:35:18,491 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:35:18,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:35:19,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1771 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1518 trivial. 0 not checked. [2019-10-13 21:35:19,008 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532366899] [2019-10-13 21:35:19,008 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455696494] [2019-10-13 21:35:19,009 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 21:35:19,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:35:19,181 INFO L256 TraceCheckSpWp]: Trace formula consists of 685 conjuncts, 24 conjunts are in the unsatisfiable core [2019-10-13 21:35:19,187 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:35:19,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1771 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1518 trivial. 0 not checked. [2019-10-13 21:35:19,219 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:35:20,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1771 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1518 trivial. 0 not checked. [2019-10-13 21:35:20,062 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1343060798] [2019-10-13 21:35:20,064 INFO L162 IcfgInterpreter]: Started Sifa with 18 locations of interest [2019-10-13 21:35:20,064 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:35:20,065 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:35:20,065 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:35:20,065 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:35:20,092 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 21:35:20,619 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 28 for LOIs [2019-10-13 21:35:20,627 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:35:20,630 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:35:20,630 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:35:20,631 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 319#(and (exists ((|v_main_~#a~0.base_BEFORE_CALL_4| Int) (v_prenex_4 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_4|) 0) 48) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| v_prenex_4) 0) 48)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:35:20,631 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 324#(and (<= __VERIFIER_assert_~cond 0) (exists ((|v_main_~#a~0.base_BEFORE_CALL_4| Int) (v_prenex_4 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_4|) 0) 48) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| v_prenex_4) 0) 48)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 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)) [2019-10-13 21:35:20,631 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 333#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:35:20,631 INFO L193 IcfgInterpreter]: Reachable states at location L36-2 satisfy 299#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:35:20,631 INFO L193 IcfgInterpreter]: Reachable states at location L26-2 satisfy 223#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:35:20,632 INFO L193 IcfgInterpreter]: Reachable states at location L16-2 satisfy 147#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:35:20,632 INFO L193 IcfgInterpreter]: Reachable states at location L6-2 satisfy 71#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (= |#length| (store |old(#length)| |main_~#a~0.base| 400000)) (<= 0 main_~i~0) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (<= main_~i~0 0) (= 0 (select |old(#valid)| 0)) (= |#valid| (store |old(#valid)| |main_~#a~0.base| 1)) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0) (= main_~i~0 0))) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:35:20,632 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 21:35:20,632 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 21:35:20,633 INFO L193 IcfgInterpreter]: Reachable states at location L41-3 satisfy 304#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (not (< main_~i~0 100000)) (<= main_~x~0 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 main_~x~0) (= main_~x~0 0) (<= 100000 main_~i~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:35:20,633 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 338#(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 21:35:20,633 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:35:20,634 INFO L193 IcfgInterpreter]: Reachable states at location L31-2 satisfy 261#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:35:20,634 INFO L193 IcfgInterpreter]: Reachable states at location L21-2 satisfy 185#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:35:20,634 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 314#(exists ((|v_main_~#a~0.base_BEFORE_CALL_4| Int) (v_prenex_4 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_4|) 0) 48) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| v_prenex_4) 0) 48)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-13 21:35:20,634 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 329#(and (<= __VERIFIER_assert_~cond 0) (exists ((|v_main_~#a~0.base_BEFORE_CALL_4| Int) (v_prenex_4 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_4|) 0) 48) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| v_prenex_4) 0) 48)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 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)) [2019-10-13 21:35:20,635 INFO L193 IcfgInterpreter]: Reachable states at location L11-2 satisfy 109#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:35:20,635 INFO L193 IcfgInterpreter]: Reachable states at location L42 satisfy 309#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* main_~x~0 4) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (not (< main_~i~0 100000)) (<= main_~x~0 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 main_~x~0) (< main_~x~0 100000) (= main_~x~0 0) (<= 100000 main_~i~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:35:24,298 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 21:35:24,298 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25, 10] total 59 [2019-10-13 21:35:24,299 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837985820] [2019-10-13 21:35:24,300 INFO L442 AbstractCegarLoop]: Interpolant automaton has 59 states [2019-10-13 21:35:24,300 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:35:24,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2019-10-13 21:35:24,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1205, Invalid=2217, Unknown=0, NotChecked=0, Total=3422 [2019-10-13 21:35:24,303 INFO L87 Difference]: Start difference. First operand 175 states and 182 transitions. Second operand 59 states. [2019-10-13 21:35:28,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:35:28,841 INFO L93 Difference]: Finished difference Result 499 states and 680 transitions. [2019-10-13 21:35:28,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2019-10-13 21:35:28,843 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 171 [2019-10-13 21:35:28,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:35:28,845 INFO L225 Difference]: With dead ends: 499 [2019-10-13 21:35:28,846 INFO L226 Difference]: Without dead ends: 352 [2019-10-13 21:35:28,852 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 591 GetRequests, 343 SyntacticMatches, 138 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12551 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=3606, Invalid=8826, Unknown=0, NotChecked=0, Total=12432 [2019-10-13 21:35:28,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2019-10-13 21:35:28,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 343. [2019-10-13 21:35:28,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2019-10-13 21:35:28,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 350 transitions. [2019-10-13 21:35:28,892 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 350 transitions. Word has length 171 [2019-10-13 21:35:28,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:35:28,894 INFO L462 AbstractCegarLoop]: Abstraction has 343 states and 350 transitions. [2019-10-13 21:35:28,895 INFO L463 AbstractCegarLoop]: Interpolant automaton has 59 states. [2019-10-13 21:35:28,895 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 350 transitions. [2019-10-13 21:35:28,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2019-10-13 21:35:28,900 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:35:28,900 INFO L380 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:35:29,101 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:35:29,104 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:35:29,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:35:29,104 INFO L82 PathProgramCache]: Analyzing trace with hash -769997720, now seen corresponding path program 5 times [2019-10-13 21:35:29,104 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:35:29,105 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611306407] [2019-10-13 21:35:29,105 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:35:29,105 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:35:29,105 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:35:29,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:35:30,496 INFO L134 CoverageAnalysis]: Checked inductivity of 7567 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 6486 trivial. 0 not checked. [2019-10-13 21:35:30,497 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611306407] [2019-10-13 21:35:30,497 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365165855] [2019-10-13 21:35:30,498 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