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_init4_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-06 23:57:51,232 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2019-10-06 23:57:51,264 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-06 23:57:51,265 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-06 23:57:51,266 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-06 23:57:51,267 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-06 23:57:51,268 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-06 23:57:51,269 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-06 23:57:51,270 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-06 23:57:51,272 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-06 23:57:51,274 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-06 23:57:51,275 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-06 23:57:51,276 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-06 23:57:51,277 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-06 23:57:51,279 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-06 23:57:51,287 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-06 23:57:51,288 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-06 23:57:51,289 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-06 23:57:51,290 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 [2019-10-06 23:57:51,306 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-06 23:57:51,306 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-06 23:57:51,308 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-06 23:57:51,308 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-06 23:57:51,308 INFO L138 SettingsManager]: * Use SBE=true [2019-10-06 23:57:51,308 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-06 23:57:51,309 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-06 23:57:51,309 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-06 23:57:51,309 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-06 23:57:51,309 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-06 23:57:51,309 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-06 23:57:51,309 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-06 23:57:51,310 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-06 23:57:51,310 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-06 23:57:51,310 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-06 23:57:51,310 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-06 23:57:51,310 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-06 23:57:51,311 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-06 23:57:51,311 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-06 23:57:51,311 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-06 23:57:51,311 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-06 23:57:51,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-06 23:57:51,312 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-06 23:57:51,312 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-06 23:57:51,312 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-06 23:57:51,312 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-06 23:57:51,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-06 23:57:51,313 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-06 23:57:51,313 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 [2019-10-06 23:57:51,654 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-06 23:57:51,671 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-06 23:57:51,677 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-06 23:57:51,679 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-06 23:57:51,679 INFO L275 PluginConnector]: CDTParser initialized [2019-10-06 23:57:51,680 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_init4_ground-1.i [2019-10-06 23:57:51,758 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/861cc49ee/1b9e733b8b6b4f61965f6f9c8b59793b/FLAG0d781e048 [2019-10-06 23:57:52,286 INFO L306 CDTParser]: Found 1 translation units. [2019-10-06 23:57:52,286 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_init4_ground-1.i [2019-10-06 23:57:52,294 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/861cc49ee/1b9e733b8b6b4f61965f6f9c8b59793b/FLAG0d781e048 [2019-10-06 23:57:52,655 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/861cc49ee/1b9e733b8b6b4f61965f6f9c8b59793b [2019-10-06 23:57:52,663 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-06 23:57:52,665 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-06 23:57:52,666 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-06 23:57:52,666 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-06 23:57:52,669 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-06 23:57:52,670 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 11:57:52" (1/1) ... [2019-10-06 23:57:52,673 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@616dfd38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 11:57:52, skipping insertion in model container [2019-10-06 23:57:52,673 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 11:57:52" (1/1) ... [2019-10-06 23:57:52,681 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-06 23:57:52,700 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-06 23:57:52,865 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-06 23:57:52,870 INFO L188 MainTranslator]: Completed pre-run [2019-10-06 23:57:52,892 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-06 23:57:53,003 INFO L192 MainTranslator]: Completed translation [2019-10-06 23:57:53,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 11:57:53 WrapperNode [2019-10-06 23:57:53,004 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-06 23:57:53,006 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-06 23:57:53,006 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-06 23:57:53,007 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-06 23:57:53,022 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 11:57:53" (1/1) ... [2019-10-06 23:57:53,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 11:57:53" (1/1) ... [2019-10-06 23:57:53,031 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 11:57:53" (1/1) ... [2019-10-06 23:57:53,032 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 11:57:53" (1/1) ... [2019-10-06 23:57:53,040 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 11:57:53" (1/1) ... [2019-10-06 23:57:53,049 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 11:57:53" (1/1) ... [2019-10-06 23:57:53,056 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 11:57:53" (1/1) ... [2019-10-06 23:57:53,059 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-06 23:57:53,059 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-06 23:57:53,060 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-06 23:57:53,060 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-06 23:57:53,061 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 11:57:53" (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 [2019-10-06 23:57:53,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-06 23:57:53,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-06 23:57:53,120 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-06 23:57:53,120 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-06 23:57:53,120 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-06 23:57:53,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-06 23:57:53,121 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-06 23:57:53,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-06 23:57:53,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-06 23:57:53,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-06 23:57:53,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-06 23:57:53,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-06 23:57:53,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-06 23:57:53,522 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-06 23:57:53,522 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-06 23:57:53,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 11:57:53 BoogieIcfgContainer [2019-10-06 23:57:53,524 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-06 23:57:53,525 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-06 23:57:53,525 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-06 23:57:53,528 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-06 23:57:53,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 11:57:52" (1/3) ... [2019-10-06 23:57:53,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@735ab3a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 11:57:53, skipping insertion in model container [2019-10-06 23:57:53,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 11:57:53" (2/3) ... [2019-10-06 23:57:53,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@735ab3a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 11:57:53, skipping insertion in model container [2019-10-06 23:57:53,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 11:57:53" (3/3) ... [2019-10-06 23:57:53,531 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_init4_ground-1.i [2019-10-06 23:57:53,539 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-06 23:57:53,547 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-06 23:57:53,558 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-06 23:57:53,583 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-06 23:57:53,584 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-06 23:57:53,584 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-06 23:57:53,584 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-06 23:57:53,584 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-06 23:57:53,584 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-06 23:57:53,584 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-06 23:57:53,585 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-06 23:57:53,600 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-10-06 23:57:53,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-06 23:57:53,606 INFO L377 BasicCegarLoop]: Found error trace [2019-10-06 23:57:53,607 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-06 23:57:53,609 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-06 23:57:53,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-06 23:57:53,614 INFO L82 PathProgramCache]: Analyzing trace with hash 2001495867, now seen corresponding path program 1 times [2019-10-06 23:57:53,622 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-06 23:57:53,622 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-06 23:57:53,623 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-06 23:57:53,623 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-06 23:57:53,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-06 23:57:53,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-06 23:57:53,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-06 23:57:53,788 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-06 23:57:53,789 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-06 23:57:53,789 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-06 23:57:53,794 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-06 23:57:53,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-06 23:57:53,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-06 23:57:53,818 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 3 states. [2019-10-06 23:57:53,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-06 23:57:53,923 INFO L93 Difference]: Finished difference Result 40 states and 54 transitions. [2019-10-06 23:57:53,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-06 23:57:53,926 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2019-10-06 23:57:53,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-06 23:57:53,938 INFO L225 Difference]: With dead ends: 40 [2019-10-06 23:57:53,938 INFO L226 Difference]: Without dead ends: 22 [2019-10-06 23:57:53,945 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-06 23:57:53,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-10-06 23:57:53,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-10-06 23:57:53,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-10-06 23:57:53,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2019-10-06 23:57:53,996 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 14 [2019-10-06 23:57:53,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-06 23:57:53,996 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2019-10-06 23:57:53,997 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-06 23:57:53,997 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2019-10-06 23:57:53,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-06 23:57:53,998 INFO L377 BasicCegarLoop]: Found error trace [2019-10-06 23:57:53,998 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-06 23:57:53,999 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-06 23:57:53,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-06 23:57:53,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1527613737, now seen corresponding path program 1 times [2019-10-06 23:57:54,000 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-06 23:57:54,000 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-06 23:57:54,000 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-06 23:57:54,000 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-06 23:57:54,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-06 23:57:54,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-06 23:57:54,096 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-06 23:57:54,097 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-06 23:57:54,097 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-06 23:57:54,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-06 23:57:54,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-06 23:57:54,159 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-06 23:57:54,166 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-06 23:57:54,203 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-06 23:57:54,203 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-06 23:57:54,244 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-06 23:57:54,246 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-06 23:57:54,275 INFO L162 IcfgInterpreter]: Started Sifa with 15 locations of interest [2019-10-06 23:57:54,275 INFO L169 IcfgInterpreter]: Building call graph [2019-10-06 23:57:54,288 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-06 23:57:54,304 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-06 23:57:54,305 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-06 23:57:54,500 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-06 23:57:55,435 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 28 for LOIs [2019-10-06 23:57:55,458 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-06 23:57:55,468 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-06 23:57:55,469 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-06 23:57:55,469 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 205#(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|) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_1|) 0) 46) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (= (select (select |#memory_int| v_prenex_1) 0) 46)) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-06 23:57:55,470 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 210#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~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|) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_1|) 0) 46) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (= (select (select |#memory_int| v_prenex_1) 0) 46)) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-06 23:57:55,470 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 219#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-06 23:57:55,470 INFO L193 IcfgInterpreter]: Reachable states at location L26-3 satisfy 190#(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)) [2019-10-06 23:57:55,470 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)) [2019-10-06 23:57:55,471 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)) [2019-10-06 23:57:55,471 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)) [2019-10-06 23:57:55,471 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)) [2019-10-06 23:57:55,471 INFO L193 IcfgInterpreter]: Reachable states at location L27 satisfy 195#(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) (= (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~x~0) |main_~#a~0.offset|)) |main_#t~mem1|) (< main_~x~0 100000) (= main_~x~0 0) (<= 100000 main_~i~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-06 23:57:55,472 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 224#(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)) [2019-10-06 23:57:55,472 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 215#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~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|) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_1|) 0) 46) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (= (select (select |#memory_int| v_prenex_1) 0) 46)) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-06 23:57:55,474 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-06 23:57:55,475 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)) [2019-10-06 23:57:55,475 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 200#(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|) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_1|) 0) 46) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (= (select (select |#memory_int| v_prenex_1) 0) 46)) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-06 23:57:55,476 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)) [2019-10-06 23:57:56,109 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-06 23:57:56,110 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 10] total 17 [2019-10-06 23:57:56,114 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-10-06 23:57:56,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-10-06 23:57:56,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2019-10-06 23:57:56,118 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 17 states. [2019-10-06 23:57:56,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-06 23:57:56,929 INFO L93 Difference]: Finished difference Result 58 states and 77 transitions. [2019-10-06 23:57:56,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-06 23:57:56,931 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 18 [2019-10-06 23:57:56,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-06 23:57:56,932 INFO L225 Difference]: With dead ends: 58 [2019-10-06 23:57:56,932 INFO L226 Difference]: Without dead ends: 43 [2019-10-06 23:57:56,934 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 37 SyntacticMatches, 6 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2019-10-06 23:57:56,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-10-06 23:57:56,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 34. [2019-10-06 23:57:56,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-10-06 23:57:56,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2019-10-06 23:57:56,947 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 18 [2019-10-06 23:57:56,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-06 23:57:56,948 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2019-10-06 23:57:56,955 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-10-06 23:57:56,955 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2019-10-06 23:57:56,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-06 23:57:56,958 INFO L377 BasicCegarLoop]: Found error trace [2019-10-06 23:57:56,958 INFO L385 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-06 23:57:57,162 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-06 23:57:57,163 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-06 23:57:57,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-06 23:57:57,163 INFO L82 PathProgramCache]: Analyzing trace with hash -549318725, now seen corresponding path program 2 times [2019-10-06 23:57:57,163 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-06 23:57:57,163 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-06 23:57:57,163 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-06 23:57:57,164 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-06 23:57:57,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-06 23:57:57,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-06 23:57:57,324 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-06 23:57:57,325 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-06 23:57:57,325 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-06 23:57:57,325 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-06 23:57:57,401 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-10-06 23:57:57,402 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-06 23:57:57,404 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-06 23:57:57,407 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-06 23:57:57,423 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-06 23:57:57,423 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-06 23:57:57,486 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-06 23:57:57,487 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-06 23:57:57,489 INFO L162 IcfgInterpreter]: Started Sifa with 15 locations of interest [2019-10-06 23:57:57,490 INFO L169 IcfgInterpreter]: Building call graph [2019-10-06 23:57:57,490 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-06 23:57:57,490 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-06 23:57:57,491 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-06 23:57:57,537 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-06 23:57:58,206 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 28 for LOIs [2019-10-06 23:57:58,232 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-06 23:57:58,242 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-06 23:57:58,243 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-06 23:57:58,243 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 205#(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) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (not (= 46 (select (select |#memory_int| v_prenex_2) 0)))) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= 46 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_2|) 0)) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-06 23:57:58,243 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 210#(and (<= __VERIFIER_assert_~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) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (not (= 46 (select (select |#memory_int| v_prenex_2) 0)))) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= 46 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_2|) 0)) (= |#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)) [2019-10-06 23:57:58,243 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 219#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-06 23:57:58,244 INFO L193 IcfgInterpreter]: Reachable states at location L26-3 satisfy 190#(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)) [2019-10-06 23:57:58,244 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)) [2019-10-06 23:57:58,244 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)) [2019-10-06 23:57:58,244 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)) [2019-10-06 23:57:58,245 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)) [2019-10-06 23:57:58,245 INFO L193 IcfgInterpreter]: Reachable states at location L27 satisfy 195#(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) (= (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~x~0) |main_~#a~0.offset|)) |main_#t~mem1|) (< main_~x~0 100000) (= main_~x~0 0) (<= 100000 main_~i~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-06 23:57:58,245 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 224#(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)) [2019-10-06 23:57:58,246 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 215#(and (<= __VERIFIER_assert_~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) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (not (= 46 (select (select |#memory_int| v_prenex_2) 0)))) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= 46 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_2|) 0)) (= |#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)) [2019-10-06 23:57:58,246 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-06 23:57:58,246 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)) [2019-10-06 23:57:58,247 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 200#(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) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (not (= 46 (select (select |#memory_int| v_prenex_2) 0)))) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= 46 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_2|) 0)) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-06 23:57:58,247 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)) [2019-10-06 23:57:58,861 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-06 23:57:58,862 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 10] total 23 [2019-10-06 23:57:58,863 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-10-06 23:57:58,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-10-06 23:57:58,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2019-10-06 23:57:58,864 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 23 states. [2019-10-06 23:57:59,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-06 23:57:59,928 INFO L93 Difference]: Finished difference Result 91 states and 122 transitions. [2019-10-06 23:57:59,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-06 23:57:59,929 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 30 [2019-10-06 23:57:59,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-06 23:57:59,930 INFO L225 Difference]: With dead ends: 91 [2019-10-06 23:57:59,930 INFO L226 Difference]: Without dead ends: 67 [2019-10-06 23:57:59,932 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 72 SyntacticMatches, 15 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 659 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=312, Invalid=1248, Unknown=0, NotChecked=0, Total=1560 [2019-10-06 23:57:59,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2019-10-06 23:57:59,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 58. [2019-10-06 23:57:59,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-10-06 23:57:59,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2019-10-06 23:57:59,945 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 30 [2019-10-06 23:57:59,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-06 23:57:59,948 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2019-10-06 23:57:59,949 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-10-06 23:57:59,949 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2019-10-06 23:57:59,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-10-06 23:57:59,951 INFO L377 BasicCegarLoop]: Found error trace [2019-10-06 23:57:59,951 INFO L385 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-06 23:58:00,158 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-06 23:58:00,158 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-06 23:58:00,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-06 23:58:00,159 INFO L82 PathProgramCache]: Analyzing trace with hash -622463877, now seen corresponding path program 3 times [2019-10-06 23:58:00,159 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-06 23:58:00,159 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-06 23:58:00,159 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-06 23:58:00,159 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-06 23:58:00,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-06 23:58:00,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-06 23:58:00,369 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2019-10-06 23:58:00,369 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-06 23:58:00,370 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-06 23:58:00,370 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-06 23:58:00,449 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-06 23:58:00,449 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-06 23:58:00,451 INFO L256 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-06 23:58:00,454 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-06 23:58:00,474 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2019-10-06 23:58:00,474 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-06 23:58:00,687 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2019-10-06 23:58:00,687 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-06 23:58:00,690 INFO L162 IcfgInterpreter]: Started Sifa with 15 locations of interest [2019-10-06 23:58:00,690 INFO L169 IcfgInterpreter]: Building call graph [2019-10-06 23:58:00,691 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-06 23:58:00,691 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-06 23:58:00,691 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-06 23:58:00,728 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-06 23:58:01,141 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 28 for LOIs [2019-10-06 23:58:01,150 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-06 23:58:01,155 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-06 23:58:01,155 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-06 23:58:01,155 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 205#(and (exists ((|v_main_~#a~0.base_BEFORE_CALL_3| Int) (v_prenex_3 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (= (select (select |#memory_int| v_prenex_3) 0) 46)) (= |#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) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_3|) 0) 46) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-06 23:58:01,155 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 210#(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) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (= (select (select |#memory_int| v_prenex_3) 0) 46)) (= |#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) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_3|) 0) 46) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-06 23:58:01,155 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 219#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-06 23:58:01,156 INFO L193 IcfgInterpreter]: Reachable states at location L26-3 satisfy 190#(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)) [2019-10-06 23:58:01,156 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)) [2019-10-06 23:58:01,156 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)) [2019-10-06 23:58:01,156 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)) [2019-10-06 23:58:01,156 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)) [2019-10-06 23:58:01,156 INFO L193 IcfgInterpreter]: Reachable states at location L27 satisfy 195#(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) (= (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~x~0) |main_~#a~0.offset|)) |main_#t~mem1|) (< main_~x~0 100000) (= main_~x~0 0) (<= 100000 main_~i~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-06 23:58:01,157 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 224#(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)) [2019-10-06 23:58:01,157 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 215#(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) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (= (select (select |#memory_int| v_prenex_3) 0) 46)) (= |#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) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_3|) 0) 46) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-06 23:58:01,157 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-06 23:58:01,157 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)) [2019-10-06 23:58:01,157 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 200#(exists ((|v_main_~#a~0.base_BEFORE_CALL_3| Int) (v_prenex_3 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (= (select (select |#memory_int| v_prenex_3) 0) 46)) (= |#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) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_3|) 0) 46) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-06 23:58:01,157 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)) [2019-10-06 23:58:02,120 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-06 23:58:02,121 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13, 10] total 35 [2019-10-06 23:58:02,122 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2019-10-06 23:58:02,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2019-10-06 23:58:02,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=861, Unknown=0, NotChecked=0, Total=1190 [2019-10-06 23:58:02,124 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand 35 states. [2019-10-06 23:58:04,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-06 23:58:04,116 INFO L93 Difference]: Finished difference Result 157 states and 212 transitions. [2019-10-06 23:58:04,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-10-06 23:58:04,116 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 54 [2019-10-06 23:58:04,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-06 23:58:04,119 INFO L225 Difference]: With dead ends: 157 [2019-10-06 23:58:04,119 INFO L226 Difference]: Without dead ends: 115 [2019-10-06 23:58:04,122 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 109 SyntacticMatches, 33 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2162 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=978, Invalid=3054, Unknown=0, NotChecked=0, Total=4032 [2019-10-06 23:58:04,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2019-10-06 23:58:04,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 106. [2019-10-06 23:58:04,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2019-10-06 23:58:04,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 110 transitions. [2019-10-06 23:58:04,140 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 110 transitions. Word has length 54 [2019-10-06 23:58:04,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-06 23:58:04,141 INFO L462 AbstractCegarLoop]: Abstraction has 106 states and 110 transitions. [2019-10-06 23:58:04,141 INFO L463 AbstractCegarLoop]: Interpolant automaton has 35 states. [2019-10-06 23:58:04,141 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 110 transitions. [2019-10-06 23:58:04,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-10-06 23:58:04,144 INFO L377 BasicCegarLoop]: Found error trace [2019-10-06 23:58:04,144 INFO L385 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-06 23:58:04,348 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-06 23:58:04,349 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-06 23:58:04,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-06 23:58:04,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1843842555, now seen corresponding path program 4 times [2019-10-06 23:58:04,349 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-06 23:58:04,349 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-06 23:58:04,350 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-06 23:58:04,350 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-06 23:58:04,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-06 23:58:04,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-06 23:58:04,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 759 trivial. 0 not checked. [2019-10-06 23:58:04,797 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-06 23:58:04,797 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-06 23:58:04,797 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-06 23:58:04,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-06 23:58:04,928 INFO L256 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 24 conjunts are in the unsatisfiable core [2019-10-06 23:58:04,935 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-06 23:58:04,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 759 trivial. 0 not checked. [2019-10-06 23:58:04,956 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-06 23:58:05,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 759 trivial. 0 not checked. [2019-10-06 23:58:05,712 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-06 23:58:05,714 INFO L162 IcfgInterpreter]: Started Sifa with 15 locations of interest [2019-10-06 23:58:05,714 INFO L169 IcfgInterpreter]: Building call graph [2019-10-06 23:58:05,714 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-06 23:58:05,715 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-06 23:58:05,715 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-06 23:58:05,737 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-06 23:58:06,068 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 28 for LOIs [2019-10-06 23:58:06,074 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-06 23:58:06,077 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-06 23:58:06,078 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-06 23:58:06,078 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 205#(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) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (= (select (select |#memory_int| v_prenex_4) 0) 46) (<= 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_4|) 0) 46)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-06 23:58:06,078 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 210#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~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) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (= (select (select |#memory_int| v_prenex_4) 0) 46) (<= 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_4|) 0) 46)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-06 23:58:06,079 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 219#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-06 23:58:06,079 INFO L193 IcfgInterpreter]: Reachable states at location L26-3 satisfy 190#(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)) [2019-10-06 23:58:06,079 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)) [2019-10-06 23:58:06,079 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)) [2019-10-06 23:58:06,079 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)) [2019-10-06 23:58:06,080 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)) [2019-10-06 23:58:06,080 INFO L193 IcfgInterpreter]: Reachable states at location L27 satisfy 195#(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) (= (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~x~0) |main_~#a~0.offset|)) |main_#t~mem1|) (< main_~x~0 100000) (= main_~x~0 0) (<= 100000 main_~i~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-06 23:58:06,080 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 224#(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)) [2019-10-06 23:58:06,080 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 215#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~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) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (= (select (select |#memory_int| v_prenex_4) 0) 46) (<= 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_4|) 0) 46)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-06 23:58:06,081 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-06 23:58:06,081 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)) [2019-10-06 23:58:06,081 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 200#(exists ((|v_main_~#a~0.base_BEFORE_CALL_4| Int) (v_prenex_4 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_4) 0) 46) (<= 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_4|) 0) 46)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-06 23:58:06,081 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)) [2019-10-06 23:58:08,123 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-06 23:58:08,123 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25, 10] total 59 [2019-10-06 23:58:08,125 INFO L442 AbstractCegarLoop]: Interpolant automaton has 59 states [2019-10-06 23:58:08,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2019-10-06 23:58:08,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1205, Invalid=2217, Unknown=0, NotChecked=0, Total=3422 [2019-10-06 23:58:08,128 INFO L87 Difference]: Start difference. First operand 106 states and 110 transitions. Second operand 59 states. [2019-10-06 23:58:12,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-06 23:58:12,862 INFO L93 Difference]: Finished difference Result 289 states and 392 transitions. [2019-10-06 23:58:12,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2019-10-06 23:58:12,863 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 102 [2019-10-06 23:58:12,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-06 23:58:12,865 INFO L225 Difference]: With dead ends: 289 [2019-10-06 23:58:12,866 INFO L226 Difference]: Without dead ends: 211 [2019-10-06 23:58:12,870 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 205 SyntacticMatches, 69 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7652 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=3606, Invalid=8826, Unknown=0, NotChecked=0, Total=12432 [2019-10-06 23:58:12,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2019-10-06 23:58:12,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 202. [2019-10-06 23:58:12,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2019-10-06 23:58:12,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 206 transitions. [2019-10-06 23:58:12,898 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 206 transitions. Word has length 102 [2019-10-06 23:58:12,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-06 23:58:12,898 INFO L462 AbstractCegarLoop]: Abstraction has 202 states and 206 transitions. [2019-10-06 23:58:12,899 INFO L463 AbstractCegarLoop]: Interpolant automaton has 59 states. [2019-10-06 23:58:12,899 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 206 transitions. [2019-10-06 23:58:12,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2019-10-06 23:58:12,906 INFO L377 BasicCegarLoop]: Found error trace [2019-10-06 23:58:12,906 INFO L385 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-06 23:58:13,110 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-06 23:58:13,111 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-06 23:58:13,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-06 23:58:13,111 INFO L82 PathProgramCache]: Analyzing trace with hash -171130629, now seen corresponding path program 5 times [2019-10-06 23:58:13,112 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-06 23:58:13,112 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-06 23:58:13,112 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-06 23:58:13,112 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-06 23:58:13,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-06 23:58:13,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-06 23:58:14,477 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 3243 trivial. 0 not checked. [2019-10-06 23:58:14,477 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-06 23:58:14,478 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-06 23:58:14,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true