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_init5_ground-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-06 23:59:44,647 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-06 23:59:44,653 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-06 23:59:44,665 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-06 23:59:44,675 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-06 23:59:44,677 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-06 23:59:44,678 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-06 23:59:44,679 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-06 23:59:44,680 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-06 23:59:44,681 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-06 23:59:44,683 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-06 23:59:44,685 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-06 23:59:44,687 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-06 23:59:44,688 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-06 23:59:44,690 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-06 23:59:44,690 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-06 23:59:44,693 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-06 23:59:44,702 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-06 23:59:44,703 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-06 23:59:44,703 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-06 23:59:44,704 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 23:59:44,719 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-06 23:59:44,720 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-06 23:59:44,721 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-06 23:59:44,721 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-06 23:59:44,721 INFO L138 SettingsManager]: * Use SBE=true [2019-10-06 23:59:44,722 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-06 23:59:44,722 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-06 23:59:44,722 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-06 23:59:44,722 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-06 23:59:44,723 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-06 23:59:44,723 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-06 23:59:44,723 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-06 23:59:44,723 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-06 23:59:44,723 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-06 23:59:44,724 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-06 23:59:44,724 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-06 23:59:44,724 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-06 23:59:44,724 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-06 23:59:44,724 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-06 23:59:44,725 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-06 23:59:44,725 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-06 23:59:44,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-06 23:59:44,725 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-06 23:59:44,725 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-06 23:59:44,726 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-06 23:59:44,726 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-06 23:59:44,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-06 23:59:44,726 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-06 23:59:44,726 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 23:59:45,022 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-06 23:59:45,035 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-06 23:59:45,038 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-06 23:59:45,040 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-06 23:59:45,040 INFO L275 PluginConnector]: CDTParser initialized [2019-10-06 23:59:45,041 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_init5_ground-2.i [2019-10-06 23:59:45,101 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/218115678/a8e37b9e585746a286cb35b64ef48821/FLAG29e2ae37c [2019-10-06 23:59:45,531 INFO L306 CDTParser]: Found 1 translation units. [2019-10-06 23:59:45,533 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_init5_ground-2.i [2019-10-06 23:59:45,540 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/218115678/a8e37b9e585746a286cb35b64ef48821/FLAG29e2ae37c [2019-10-06 23:59:45,870 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/218115678/a8e37b9e585746a286cb35b64ef48821 [2019-10-06 23:59:45,881 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-06 23:59:45,882 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-06 23:59:45,883 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-06 23:59:45,884 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-06 23:59:45,888 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-06 23:59:45,889 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 11:59:45" (1/1) ... [2019-10-06 23:59:45,892 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f650260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 11:59:45, skipping insertion in model container [2019-10-06 23:59:45,892 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 11:59:45" (1/1) ... [2019-10-06 23:59:45,901 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-06 23:59:45,922 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-06 23:59:46,133 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-06 23:59:46,137 INFO L188 MainTranslator]: Completed pre-run [2019-10-06 23:59:46,157 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-06 23:59:46,176 INFO L192 MainTranslator]: Completed translation [2019-10-06 23:59:46,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 11:59:46 WrapperNode [2019-10-06 23:59:46,177 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-06 23:59:46,177 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-06 23:59:46,177 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-06 23:59:46,177 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-06 23:59:46,277 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 11:59:46" (1/1) ... [2019-10-06 23:59:46,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 11:59:46" (1/1) ... [2019-10-06 23:59:46,284 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 11:59:46" (1/1) ... [2019-10-06 23:59:46,284 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 11:59:46" (1/1) ... [2019-10-06 23:59:46,291 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 11:59:46" (1/1) ... [2019-10-06 23:59:46,298 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 11:59:46" (1/1) ... [2019-10-06 23:59:46,299 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 11:59:46" (1/1) ... [2019-10-06 23:59:46,302 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-06 23:59:46,302 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-06 23:59:46,302 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-06 23:59:46,302 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-06 23:59:46,303 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 11:59:46" (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 23:59:46,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-06 23:59:46,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-06 23:59:46,357 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-06 23:59:46,357 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-06 23:59:46,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-06 23:59:46,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-06 23:59:46,357 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-06 23:59:46,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-06 23:59:46,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-06 23:59:46,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-06 23:59:46,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-06 23:59:46,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-06 23:59:46,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-06 23:59:46,722 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-06 23:59:46,723 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-10-06 23:59:46,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 11:59:46 BoogieIcfgContainer [2019-10-06 23:59:46,724 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-06 23:59:46,726 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-06 23:59:46,726 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-06 23:59:46,729 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-06 23:59:46,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 11:59:45" (1/3) ... [2019-10-06 23:59:46,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61e50ba2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 11:59:46, skipping insertion in model container [2019-10-06 23:59:46,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 11:59:46" (2/3) ... [2019-10-06 23:59:46,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61e50ba2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 11:59:46, skipping insertion in model container [2019-10-06 23:59:46,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 11:59:46" (3/3) ... [2019-10-06 23:59:46,732 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_init5_ground-2.i [2019-10-06 23:59:46,742 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-06 23:59:46,750 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-06 23:59:46,761 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-06 23:59:46,784 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-06 23:59:46,785 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-06 23:59:46,785 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-06 23:59:46,785 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-06 23:59:46,785 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-06 23:59:46,785 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-06 23:59:46,785 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-06 23:59:46,785 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-06 23:59:46,799 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-10-06 23:59:46,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-06 23:59:46,805 INFO L377 BasicCegarLoop]: Found error trace [2019-10-06 23:59:46,806 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-06 23:59:46,808 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-06 23:59:46,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-06 23:59:46,813 INFO L82 PathProgramCache]: Analyzing trace with hash 2033634507, now seen corresponding path program 1 times [2019-10-06 23:59:46,820 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-06 23:59:46,820 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-06 23:59:46,820 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-06 23:59:46,820 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-06 23:59:46,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-06 23:59:46,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-06 23:59:46,971 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 23:59:46,972 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-06 23:59:46,972 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-06 23:59:46,973 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-06 23:59:46,976 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-06 23:59:46,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-06 23:59:46,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-06 23:59:46,989 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 3 states. [2019-10-06 23:59:47,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-06 23:59:47,076 INFO L93 Difference]: Finished difference Result 43 states and 60 transitions. [2019-10-06 23:59:47,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-06 23:59:47,079 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2019-10-06 23:59:47,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-06 23:59:47,087 INFO L225 Difference]: With dead ends: 43 [2019-10-06 23:59:47,088 INFO L226 Difference]: Without dead ends: 24 [2019-10-06 23:59:47,091 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 23:59:47,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-10-06 23:59:47,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-10-06 23:59:47,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-10-06 23:59:47,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2019-10-06 23:59:47,130 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 15 [2019-10-06 23:59:47,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-06 23:59:47,131 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2019-10-06 23:59:47,131 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-06 23:59:47,131 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2019-10-06 23:59:47,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-06 23:59:47,132 INFO L377 BasicCegarLoop]: Found error trace [2019-10-06 23:59:47,133 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-06 23:59:47,133 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-06 23:59:47,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-06 23:59:47,134 INFO L82 PathProgramCache]: Analyzing trace with hash -2054156691, now seen corresponding path program 1 times [2019-10-06 23:59:47,134 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-06 23:59:47,135 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-06 23:59:47,135 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-06 23:59:47,135 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-06 23:59:47,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-06 23:59:47,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-06 23:59:47,226 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-06 23:59:47,227 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-06 23:59:47,229 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-06 23:59:47,229 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 23:59:47,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-06 23:59:47,310 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-06 23:59:47,319 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-06 23:59:47,350 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-06 23:59:47,351 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-06 23:59:47,399 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-06 23:59:47,399 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-06 23:59:47,426 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-06 23:59:47,426 INFO L169 IcfgInterpreter]: Building call graph [2019-10-06 23:59:47,433 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-06 23:59:47,441 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-06 23:59:47,442 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-06 23:59:47,695 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-06 23:59:48,755 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 28 for LOIs [2019-10-06 23:59:48,790 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-06 23:59:48,805 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-06 23:59:48,805 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-06 23:59:48,806 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 243#(and (exists ((v_prenex_1 Int) (|v_main_~#a~0.base_BEFORE_CALL_1| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_1|) 0) 45)) (<= 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) (= (select (select |#memory_int| v_prenex_1) 0) 45) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-06 23:59:48,806 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 248#(and (exists ((v_prenex_1 Int) (|v_main_~#a~0.base_BEFORE_CALL_1| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_1|) 0) 45)) (<= 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) (= (select (select |#memory_int| v_prenex_1) 0) 45) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-06 23:59:48,806 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 257#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-06 23:59:48,807 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)) [2019-10-06 23:59:48,807 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 23:59:48,808 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 253#(and (exists ((v_prenex_1 Int) (|v_main_~#a~0.base_BEFORE_CALL_1| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_1|) 0) 45)) (<= 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) (= (select (select |#memory_int| v_prenex_1) 0) 45) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-06 23:59:48,809 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 23:59:48,810 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 23:59:48,814 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 23:59:48,814 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 262#(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 23:59:48,815 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-06 23:59:48,816 INFO L193 IcfgInterpreter]: Reachable states at location L31-3 satisfy 228#(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 23:59:48,817 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 23:59:48,817 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 238#(exists ((v_prenex_1 Int) (|v_main_~#a~0.base_BEFORE_CALL_1| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_1|) 0) 45)) (<= 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) (= (select (select |#memory_int| v_prenex_1) 0) 45) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-06 23:59:48,818 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 23:59:48,819 INFO L193 IcfgInterpreter]: Reachable states at location L32 satisfy 233#(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 23:59:49,440 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-06 23:59:49,440 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 10] total 17 [2019-10-06 23:59:49,443 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-10-06 23:59:49,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-10-06 23:59:49,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2019-10-06 23:59:49,446 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand 17 states. [2019-10-06 23:59:50,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-06 23:59:50,243 INFO L93 Difference]: Finished difference Result 65 states and 89 transitions. [2019-10-06 23:59:50,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-06 23:59:50,243 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 20 [2019-10-06 23:59:50,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-06 23:59:50,245 INFO L225 Difference]: With dead ends: 65 [2019-10-06 23:59:50,245 INFO L226 Difference]: Without dead ends: 48 [2019-10-06 23:59:50,248 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 46 SyntacticMatches, 8 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2019-10-06 23:59:50,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-10-06 23:59:50,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 39. [2019-10-06 23:59:50,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-10-06 23:59:50,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2019-10-06 23:59:50,264 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 20 [2019-10-06 23:59:50,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-06 23:59:50,265 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2019-10-06 23:59:50,265 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-10-06 23:59:50,265 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2019-10-06 23:59:50,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-10-06 23:59:50,269 INFO L377 BasicCegarLoop]: Found error trace [2019-10-06 23:59:50,269 INFO L385 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-06 23:59:50,473 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-06 23:59:50,477 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-06 23:59:50,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-06 23:59:50,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1023410357, now seen corresponding path program 2 times [2019-10-06 23:59:50,478 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-06 23:59:50,478 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-06 23:59:50,478 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-06 23:59:50,478 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-06 23:59:50,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-06 23:59:50,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-06 23:59:50,605 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-06 23:59:50,606 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-06 23:59:50,606 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-06 23:59:50,606 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 23:59:50,680 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-10-06 23:59:50,681 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-06 23:59:50,682 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-06 23:59:50,686 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-06 23:59:50,701 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-06 23:59:50,701 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-06 23:59:50,760 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-06 23:59:50,760 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-06 23:59:50,762 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-06 23:59:50,763 INFO L169 IcfgInterpreter]: Building call graph [2019-10-06 23:59:50,763 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-06 23:59:50,763 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-06 23:59:50,764 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-06 23:59:50,812 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-06 23:59:51,475 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 28 for LOIs [2019-10-06 23:59:51,487 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-06 23:59:51,492 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-06 23:59:51,492 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-06 23:59:51,493 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 243#(and (exists ((|v_main_~#a~0.base_BEFORE_CALL_2| Int) (v_prenex_2 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (= 45 (select (select |#memory_int| v_prenex_2) 0)) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (not (= 45 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_2|) 0))) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-06 23:59:51,493 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 248#(and (exists ((|v_main_~#a~0.base_BEFORE_CALL_2| Int) (v_prenex_2 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (= 45 (select (select |#memory_int| v_prenex_2) 0)) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (not (= 45 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_2|) 0))) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-06 23:59:51,494 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 257#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-06 23:59:51,494 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)) [2019-10-06 23:59:51,494 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 23:59:51,495 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 253#(and (exists ((|v_main_~#a~0.base_BEFORE_CALL_2| Int) (v_prenex_2 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (= 45 (select (select |#memory_int| v_prenex_2) 0)) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (not (= 45 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_2|) 0))) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-06 23:59:51,495 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 23:59:51,495 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 23:59:51,496 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 23:59:51,497 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 262#(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 23:59:51,497 INFO L193 IcfgInterpreter]: Reachable states at location L31-3 satisfy 228#(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 23:59:51,498 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-06 23:59:51,498 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 23:59:51,501 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 238#(exists ((|v_main_~#a~0.base_BEFORE_CALL_2| Int) (v_prenex_2 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (= 45 (select (select |#memory_int| v_prenex_2) 0)) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (not (= 45 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_2|) 0))) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-06 23:59:51,502 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 23:59:51,502 INFO L193 IcfgInterpreter]: Reachable states at location L32 satisfy 233#(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 23:59:52,211 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-06 23:59:52,211 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 10] total 23 [2019-10-06 23:59:52,212 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-10-06 23:59:52,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-10-06 23:59:52,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2019-10-06 23:59:52,213 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 23 states. [2019-10-06 23:59:53,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-06 23:59:53,253 INFO L93 Difference]: Finished difference Result 107 states and 146 transitions. [2019-10-06 23:59:53,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-06 23:59:53,254 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 35 [2019-10-06 23:59:53,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-06 23:59:53,255 INFO L225 Difference]: With dead ends: 107 [2019-10-06 23:59:53,255 INFO L226 Difference]: Without dead ends: 78 [2019-10-06 23:59:53,257 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 82 SyntacticMatches, 20 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 744 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=312, Invalid=1248, Unknown=0, NotChecked=0, Total=1560 [2019-10-06 23:59:53,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2019-10-06 23:59:53,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 69. [2019-10-06 23:59:53,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2019-10-06 23:59:53,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 74 transitions. [2019-10-06 23:59:53,271 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 74 transitions. Word has length 35 [2019-10-06 23:59:53,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-06 23:59:53,271 INFO L462 AbstractCegarLoop]: Abstraction has 69 states and 74 transitions. [2019-10-06 23:59:53,271 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-10-06 23:59:53,272 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 74 transitions. [2019-10-06 23:59:53,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-10-06 23:59:53,273 INFO L377 BasicCegarLoop]: Found error trace [2019-10-06 23:59:53,274 INFO L385 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-06 23:59:53,477 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-06 23:59:53,478 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-06 23:59:53,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-06 23:59:53,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1871527157, now seen corresponding path program 3 times [2019-10-06 23:59:53,478 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-06 23:59:53,479 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-06 23:59:53,479 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-06 23:59:53,479 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-06 23:59:53,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-06 23:59:53,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-06 23:59:53,754 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2019-10-06 23:59:53,754 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-06 23:59:53,755 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-06 23:59:53,755 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 23:59:53,852 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-06 23:59:53,852 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-06 23:59:53,853 INFO L256 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-06 23:59:53,860 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-06 23:59:53,882 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2019-10-06 23:59:53,882 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-06 23:59:54,076 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2019-10-06 23:59:54,077 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-06 23:59:54,078 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-06 23:59:54,078 INFO L169 IcfgInterpreter]: Building call graph [2019-10-06 23:59:54,079 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-06 23:59:54,079 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-06 23:59:54,079 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-06 23:59:54,107 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-06 23:59:54,609 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 28 for LOIs [2019-10-06 23:59:54,622 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-06 23:59:54,627 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-06 23:59:54,628 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-06 23:59:54,628 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 243#(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) (not (= (select (select |#memory_int| v_prenex_3) 0) 45)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_3|) 0) 45) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-06 23:59:54,628 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 248#(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) (not (= (select (select |#memory_int| v_prenex_3) 0) 45)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_3|) 0) 45) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-06 23:59:54,628 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 257#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-06 23:59:54,629 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)) [2019-10-06 23:59:54,629 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 23:59:54,629 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 253#(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) (not (= (select (select |#memory_int| v_prenex_3) 0) 45)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_3|) 0) 45) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-06 23:59:54,629 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 23:59:54,630 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 23:59:54,630 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 23:59:54,630 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 262#(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 23:59:54,630 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-06 23:59:54,630 INFO L193 IcfgInterpreter]: Reachable states at location L31-3 satisfy 228#(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 23:59:54,631 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 23:59:54,631 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 238#(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) (not (= (select (select |#memory_int| v_prenex_3) 0) 45)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_3|) 0) 45) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-06 23:59:54,631 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 23:59:54,631 INFO L193 IcfgInterpreter]: Reachable states at location L32 satisfy 233#(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 23:59:55,685 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-06 23:59:55,686 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13, 10] total 35 [2019-10-06 23:59:55,687 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2019-10-06 23:59:55,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2019-10-06 23:59:55,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=861, Unknown=0, NotChecked=0, Total=1190 [2019-10-06 23:59:55,689 INFO L87 Difference]: Start difference. First operand 69 states and 74 transitions. Second operand 35 states. [2019-10-06 23:59:57,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-06 23:59:57,547 INFO L93 Difference]: Finished difference Result 191 states and 260 transitions. [2019-10-06 23:59:57,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-10-06 23:59:57,548 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 65 [2019-10-06 23:59:57,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-06 23:59:57,550 INFO L225 Difference]: With dead ends: 191 [2019-10-06 23:59:57,550 INFO L226 Difference]: Without dead ends: 138 [2019-10-06 23:59:57,553 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 131 SyntacticMatches, 44 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2547 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=978, Invalid=3054, Unknown=0, NotChecked=0, Total=4032 [2019-10-06 23:59:57,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2019-10-06 23:59:57,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 129. [2019-10-06 23:59:57,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2019-10-06 23:59:57,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 134 transitions. [2019-10-06 23:59:57,574 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 134 transitions. Word has length 65 [2019-10-06 23:59:57,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-06 23:59:57,574 INFO L462 AbstractCegarLoop]: Abstraction has 129 states and 134 transitions. [2019-10-06 23:59:57,574 INFO L463 AbstractCegarLoop]: Interpolant automaton has 35 states. [2019-10-06 23:59:57,574 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 134 transitions. [2019-10-06 23:59:57,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-06 23:59:57,576 INFO L377 BasicCegarLoop]: Found error trace [2019-10-06 23:59:57,576 INFO L385 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-06 23:59:57,779 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-06 23:59:57,780 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-06 23:59:57,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-06 23:59:57,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1693517173, now seen corresponding path program 4 times [2019-10-06 23:59:57,781 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-06 23:59:57,781 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-06 23:59:57,782 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-06 23:59:57,782 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-06 23:59:57,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-06 23:59:57,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-06 23:59:58,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1265 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2019-10-06 23:59:58,235 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-06 23:59:58,235 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-06 23:59:58,235 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 23:59:58,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-06 23:59:58,367 INFO L256 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 24 conjunts are in the unsatisfiable core [2019-10-06 23:59:58,372 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-06 23:59:58,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1265 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2019-10-06 23:59:58,417 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-06 23:59:59,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1265 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2019-10-06 23:59:59,270 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-06 23:59:59,273 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-06 23:59:59,273 INFO L169 IcfgInterpreter]: Building call graph [2019-10-06 23:59:59,274 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-06 23:59:59,275 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-06 23:59:59,275 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-06 23:59:59,306 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-06 23:59:59,737 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 28 for LOIs [2019-10-06 23:59:59,743 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-06 23:59:59,746 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-06 23:59:59,746 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-06 23:59:59,746 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 243#(and (exists ((|v_main_~#a~0.base_BEFORE_CALL_4| Int) (v_prenex_4 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| v_prenex_4) 0) 45)) (<= |#NULL.base| 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) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_4|) 0) 45) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-06 23:59:59,747 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 248#(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| 0) (not (= (select (select |#memory_int| v_prenex_4) 0) 45)) (<= |#NULL.base| 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) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_4|) 0) 45) (<= 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)) [2019-10-06 23:59:59,747 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 257#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-06 23:59:59,747 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)) [2019-10-06 23:59:59,747 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 23:59:59,747 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 253#(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| 0) (not (= (select (select |#memory_int| v_prenex_4) 0) 45)) (<= |#NULL.base| 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) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_4|) 0) 45) (<= 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)) [2019-10-06 23:59:59,748 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 23:59:59,748 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 23:59:59,748 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 23:59:59,748 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 262#(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 23:59:59,748 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-06 23:59:59,749 INFO L193 IcfgInterpreter]: Reachable states at location L31-3 satisfy 228#(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 23:59:59,749 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 23:59:59,749 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 238#(exists ((|v_main_~#a~0.base_BEFORE_CALL_4| Int) (v_prenex_4 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| v_prenex_4) 0) 45)) (<= |#NULL.base| 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) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_4|) 0) 45) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-06 23:59:59,749 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 23:59:59,749 INFO L193 IcfgInterpreter]: Reachable states at location L32 satisfy 233#(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)) [2019-10-07 00:00:02,331 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 00:00:02,331 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25, 10] total 59 [2019-10-07 00:00:02,333 INFO L442 AbstractCegarLoop]: Interpolant automaton has 59 states [2019-10-07 00:00:02,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2019-10-07 00:00:02,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1205, Invalid=2217, Unknown=0, NotChecked=0, Total=3422 [2019-10-07 00:00:02,335 INFO L87 Difference]: Start difference. First operand 129 states and 134 transitions. Second operand 59 states. [2019-10-07 00:00:06,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:00:06,477 INFO L93 Difference]: Finished difference Result 359 states and 488 transitions. [2019-10-07 00:00:06,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2019-10-07 00:00:06,477 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 125 [2019-10-07 00:00:06,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:00:06,480 INFO L225 Difference]: With dead ends: 359 [2019-10-07 00:00:06,480 INFO L226 Difference]: Without dead ends: 258 [2019-10-07 00:00:06,485 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 251 SyntacticMatches, 92 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9285 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=3606, Invalid=8826, Unknown=0, NotChecked=0, Total=12432 [2019-10-07 00:00:06,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2019-10-07 00:00:06,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 249. [2019-10-07 00:00:06,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2019-10-07 00:00:06,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 254 transitions. [2019-10-07 00:00:06,516 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 254 transitions. Word has length 125 [2019-10-07 00:00:06,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:00:06,517 INFO L462 AbstractCegarLoop]: Abstraction has 249 states and 254 transitions. [2019-10-07 00:00:06,517 INFO L463 AbstractCegarLoop]: Interpolant automaton has 59 states. [2019-10-07 00:00:06,517 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 254 transitions. [2019-10-07 00:00:06,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2019-10-07 00:00:06,520 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:00:06,520 INFO L385 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:00:06,724 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:00:06,725 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:00:06,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:00:06,725 INFO L82 PathProgramCache]: Analyzing trace with hash 717367691, now seen corresponding path program 5 times [2019-10-07 00:00:06,726 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:00:06,726 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:00:06,726 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:00:06,727 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:00:06,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:00:06,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:00:08,169 INFO L134 CoverageAnalysis]: Checked inductivity of 5405 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2019-10-07 00:00:08,169 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:00:08,169 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:00:08,169 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