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_init6_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-06 23:59:50,168 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-06 23:59:50,172 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-06 23:59:50,192 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-06 23:59:50,193 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-06 23:59:50,195 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-06 23:59:50,197 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-06 23:59:50,206 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-06 23:59:50,211 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-06 23:59:50,214 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-06 23:59:50,216 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-06 23:59:50,217 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-06 23:59:50,217 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-06 23:59:50,219 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-06 23:59:50,222 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-06 23:59:50,224 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-06 23:59:50,225 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-06 23:59:50,227 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-06 23:59:50,228 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-06 23:59:50,234 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-06 23:59:50,239 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-06 23:59:50,242 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-06 23:59:50,246 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-06 23:59:50,247 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-06 23:59:50,249 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-06 23:59:50,260 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-06 23:59:50,261 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-06 23:59:50,263 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-06 23:59:50,264 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 23:59:50,281 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-06 23:59:50,282 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-06 23:59:50,283 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-06 23:59:50,283 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-06 23:59:50,283 INFO L138 SettingsManager]: * Use SBE=true [2019-10-06 23:59:50,284 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-06 23:59:50,284 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-06 23:59:50,284 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-06 23:59:50,284 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-06 23:59:50,284 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-06 23:59:50,285 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-06 23:59:50,285 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-06 23:59:50,285 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-06 23:59:50,285 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-06 23:59:50,285 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-06 23:59:50,286 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-06 23:59:50,286 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-06 23:59:50,286 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-06 23:59:50,286 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-06 23:59:50,286 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-06 23:59:50,287 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-06 23:59:50,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-06 23:59:50,287 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-06 23:59:50,287 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-06 23:59:50,287 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-06 23:59:50,288 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-06 23:59:50,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-06 23:59:50,288 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-06 23:59:50,288 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 23:59:50,575 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-06 23:59:50,588 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-06 23:59:50,592 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-06 23:59:50,594 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-06 23:59:50,594 INFO L275 PluginConnector]: CDTParser initialized [2019-10-06 23:59:50,595 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_init6_ground-1.i [2019-10-06 23:59:50,662 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05e3c4d4e/d1d0cfdb9a7f4127a8225ac44ce7cb1e/FLAG640c6b1ea [2019-10-06 23:59:51,110 INFO L306 CDTParser]: Found 1 translation units. [2019-10-06 23:59:51,111 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_init6_ground-1.i [2019-10-06 23:59:51,117 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05e3c4d4e/d1d0cfdb9a7f4127a8225ac44ce7cb1e/FLAG640c6b1ea [2019-10-06 23:59:51,454 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05e3c4d4e/d1d0cfdb9a7f4127a8225ac44ce7cb1e [2019-10-06 23:59:51,467 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-06 23:59:51,470 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-06 23:59:51,472 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-06 23:59:51,473 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-06 23:59:51,477 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-06 23:59:51,478 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 11:59:51" (1/1) ... [2019-10-06 23:59:51,482 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e53a924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 11:59:51, skipping insertion in model container [2019-10-06 23:59:51,482 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 11:59:51" (1/1) ... [2019-10-06 23:59:51,490 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-06 23:59:51,507 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-06 23:59:51,765 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-06 23:59:51,779 INFO L188 MainTranslator]: Completed pre-run [2019-10-06 23:59:51,825 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-06 23:59:51,854 INFO L192 MainTranslator]: Completed translation [2019-10-06 23:59:51,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 11:59:51 WrapperNode [2019-10-06 23:59:51,855 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-06 23:59:51,856 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-06 23:59:51,856 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-06 23:59:51,856 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-06 23:59:51,978 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 11:59:51" (1/1) ... [2019-10-06 23:59:51,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 11:59:51" (1/1) ... [2019-10-06 23:59:51,989 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 11:59:51" (1/1) ... [2019-10-06 23:59:51,991 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 11:59:51" (1/1) ... [2019-10-06 23:59:52,010 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 11:59:51" (1/1) ... [2019-10-06 23:59:52,021 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 11:59:51" (1/1) ... [2019-10-06 23:59:52,028 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 11:59:51" (1/1) ... [2019-10-06 23:59:52,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-06 23:59:52,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-06 23:59:52,034 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-06 23:59:52,034 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-06 23:59:52,035 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 11:59:51" (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 23:59:52,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-06 23:59:52,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-06 23:59:52,109 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-06 23:59:52,109 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-06 23:59:52,109 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-06 23:59:52,110 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-06 23:59:52,111 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-06 23:59:52,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-06 23:59:52,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-06 23:59:52,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-06 23:59:52,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-06 23:59:52,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-06 23:59:52,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-06 23:59:52,510 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-06 23:59:52,510 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-10-06 23:59:52,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 11:59:52 BoogieIcfgContainer [2019-10-06 23:59:52,512 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-06 23:59:52,513 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-06 23:59:52,513 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-06 23:59:52,516 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-06 23:59:52,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 11:59:51" (1/3) ... [2019-10-06 23:59:52,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@353fba79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 11:59:52, skipping insertion in model container [2019-10-06 23:59:52,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 11:59:51" (2/3) ... [2019-10-06 23:59:52,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@353fba79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 11:59:52, skipping insertion in model container [2019-10-06 23:59:52,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 11:59:52" (3/3) ... [2019-10-06 23:59:52,520 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_init6_ground-1.i [2019-10-06 23:59:52,528 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-06 23:59:52,536 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-06 23:59:52,548 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-06 23:59:52,571 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-06 23:59:52,572 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-06 23:59:52,572 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-06 23:59:52,572 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-06 23:59:52,572 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-06 23:59:52,572 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-06 23:59:52,573 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-06 23:59:52,573 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-06 23:59:52,589 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-10-06 23:59:52,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-06 23:59:52,596 INFO L377 BasicCegarLoop]: Found error trace [2019-10-06 23:59:52,597 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-06 23:59:52,599 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-06 23:59:52,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-06 23:59:52,604 INFO L82 PathProgramCache]: Analyzing trace with hash 2120380695, now seen corresponding path program 1 times [2019-10-06 23:59:52,612 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-06 23:59:52,612 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-06 23:59:52,613 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-06 23:59:52,613 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-06 23:59:52,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-06 23:59:52,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-06 23:59:52,784 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 23:59:52,785 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-06 23:59:52,785 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-06 23:59:52,787 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-06 23:59:52,791 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-06 23:59:52,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-06 23:59:52,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-06 23:59:52,811 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2019-10-06 23:59:52,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-06 23:59:52,917 INFO L93 Difference]: Finished difference Result 46 states and 66 transitions. [2019-10-06 23:59:52,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-06 23:59:52,919 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-10-06 23:59:52,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-06 23:59:52,928 INFO L225 Difference]: With dead ends: 46 [2019-10-06 23:59:52,929 INFO L226 Difference]: Without dead ends: 26 [2019-10-06 23:59:52,932 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 23:59:52,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-10-06 23:59:52,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-10-06 23:59:52,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-10-06 23:59:52,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2019-10-06 23:59:52,974 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 16 [2019-10-06 23:59:52,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-06 23:59:52,975 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2019-10-06 23:59:52,975 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-06 23:59:52,975 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2019-10-06 23:59:52,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-06 23:59:52,976 INFO L377 BasicCegarLoop]: Found error trace [2019-10-06 23:59:52,976 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, 1, 1] [2019-10-06 23:59:52,977 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-06 23:59:52,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-06 23:59:52,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1248295838, now seen corresponding path program 1 times [2019-10-06 23:59:52,978 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-06 23:59:52,978 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-06 23:59:52,978 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-06 23:59:52,978 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-06 23:59:52,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-06 23:59:53,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-06 23:59:53,069 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-06 23:59:53,073 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-06 23:59:53,074 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-06 23:59:53,074 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 23:59:53,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-06 23:59:53,158 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-06 23:59:53,169 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-06 23:59:53,217 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-06 23:59:53,217 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-06 23:59:53,257 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-06 23:59:53,258 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-06 23:59:53,287 INFO L162 IcfgInterpreter]: Started Sifa with 17 locations of interest [2019-10-06 23:59:53,287 INFO L169 IcfgInterpreter]: Building call graph [2019-10-06 23:59:53,295 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-06 23:59:53,304 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-06 23:59:53,305 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-06 23:59:53,512 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-06 23:59:54,805 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 28 for LOIs [2019-10-06 23:59:54,851 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-06 23:59:54,858 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-06 23:59:54,858 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-06 23:59:54,859 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 281#(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 23:59:54,859 INFO L193 IcfgInterpreter]: Reachable states at location L36-3 satisfy 266#(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 23:59:54,859 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 286#(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 23:59:54,860 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 295#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-06 23:59:54,860 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 23:59:54,861 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 23:59:54,861 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 23:59:54,862 INFO L193 IcfgInterpreter]: Reachable states at location L37 satisfy 271#(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 23:59:54,862 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 23:59:54,862 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 23:59:54,863 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 300#(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 23:59:54,863 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-06 23:59:54,864 INFO L193 IcfgInterpreter]: Reachable states at location L31-2 satisfy 261#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-06 23:59:54,864 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 23:59:54,865 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 276#(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 23:59:54,865 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 23:59:54,866 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 291#(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 23:59:55,503 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-06 23:59:55,504 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 10] total 16 [2019-10-06 23:59:55,508 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-10-06 23:59:55,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-10-06 23:59:55,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2019-10-06 23:59:55,511 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 17 states. [2019-10-06 23:59:56,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-06 23:59:56,388 INFO L93 Difference]: Finished difference Result 71 states and 101 transitions. [2019-10-06 23:59:56,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-06 23:59:56,389 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 22 [2019-10-06 23:59:56,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-06 23:59:56,392 INFO L225 Difference]: With dead ends: 71 [2019-10-06 23:59:56,393 INFO L226 Difference]: Without dead ends: 52 [2019-10-06 23:59:56,395 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 50 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 23:59:56,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-10-06 23:59:56,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 44. [2019-10-06 23:59:56,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-10-06 23:59:56,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2019-10-06 23:59:56,407 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 22 [2019-10-06 23:59:56,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-06 23:59:56,407 INFO L462 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2019-10-06 23:59:56,407 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-10-06 23:59:56,407 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2019-10-06 23:59:56,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-10-06 23:59:56,409 INFO L377 BasicCegarLoop]: Found error trace [2019-10-06 23:59:56,409 INFO L385 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-06 23:59:56,621 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-06 23:59:56,622 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-06 23:59:56,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-06 23:59:56,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1543679785, now seen corresponding path program 2 times [2019-10-06 23:59:56,623 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-06 23:59:56,623 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-06 23:59:56,624 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-06 23:59:56,624 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-06 23:59:56,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-06 23:59:56,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-06 23:59:56,808 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-10-06 23:59:56,809 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-06 23:59:56,809 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-06 23:59:56,809 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 23:59:56,909 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-10-06 23:59:56,910 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-06 23:59:56,911 INFO L256 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-06 23:59:56,916 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-06 23:59:56,930 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-10-06 23:59:56,930 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-06 23:59:56,988 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-10-06 23:59:56,989 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-06 23:59:56,990 INFO L162 IcfgInterpreter]: Started Sifa with 17 locations of interest [2019-10-06 23:59:56,991 INFO L169 IcfgInterpreter]: Building call graph [2019-10-06 23:59:56,992 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-06 23:59:56,993 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-06 23:59:56,993 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-06 23:59:57,029 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-06 23:59:57,992 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 28 for LOIs [2019-10-06 23:59:58,003 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-06 23:59:58,007 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-06 23:59:58,007 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-06 23:59:58,008 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 281#(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 23:59:58,008 INFO L193 IcfgInterpreter]: Reachable states at location L36-3 satisfy 266#(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 23:59:58,008 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 286#(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 23:59:58,009 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 295#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-06 23:59:58,009 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 23:59:58,010 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 23:59:58,011 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 23:59:58,011 INFO L193 IcfgInterpreter]: Reachable states at location L37 satisfy 271#(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 23:59:58,011 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 23:59:58,012 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 23:59:58,012 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 300#(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 23:59:58,012 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-06 23:59:58,012 INFO L193 IcfgInterpreter]: Reachable states at location L31-2 satisfy 261#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-06 23:59:58,012 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 23:59:58,013 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 276#(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 23:59:58,013 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 23:59:58,013 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 291#(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 23:59:58,783 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-06 23:59:58,783 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 10] total 23 [2019-10-06 23:59:58,785 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-10-06 23:59:58,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-10-06 23:59:58,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2019-10-06 23:59:58,786 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand 23 states. [2019-10-06 23:59:59,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-06 23:59:59,933 INFO L93 Difference]: Finished difference Result 123 states and 170 transitions. [2019-10-06 23:59:59,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-06 23:59:59,934 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 40 [2019-10-06 23:59:59,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-06 23:59:59,936 INFO L225 Difference]: With dead ends: 123 [2019-10-06 23:59:59,936 INFO L226 Difference]: Without dead ends: 89 [2019-10-06 23:59:59,937 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 92 SyntacticMatches, 25 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 829 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=312, Invalid=1248, Unknown=0, NotChecked=0, Total=1560 [2019-10-06 23:59:59,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2019-10-06 23:59:59,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 80. [2019-10-06 23:59:59,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2019-10-06 23:59:59,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 86 transitions. [2019-10-06 23:59:59,953 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 86 transitions. Word has length 40 [2019-10-06 23:59:59,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-06 23:59:59,953 INFO L462 AbstractCegarLoop]: Abstraction has 80 states and 86 transitions. [2019-10-06 23:59:59,954 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-10-06 23:59:59,954 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 86 transitions. [2019-10-06 23:59:59,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2019-10-06 23:59:59,956 INFO L377 BasicCegarLoop]: Found error trace [2019-10-06 23:59:59,956 INFO L385 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:00:00,169 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:00:00,170 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:00:00,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:00:00,171 INFO L82 PathProgramCache]: Analyzing trace with hash 376036471, now seen corresponding path program 3 times [2019-10-07 00:00:00,171 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:00:00,172 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:00:00,172 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:00:00,172 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:00:00,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:00:00,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:00:00,361 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2019-10-07 00:00:00,362 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:00:00,362 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:00:00,362 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:00:00,484 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-07 00:00:00,484 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-07 00:00:00,486 INFO L256 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-07 00:00:00,490 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:00:00,514 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2019-10-07 00:00:00,514 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:00:00,742 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2019-10-07 00:00:00,742 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:00:00,744 INFO L162 IcfgInterpreter]: Started Sifa with 17 locations of interest [2019-10-07 00:00:00,744 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:00:00,745 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:00:00,745 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:00:00,745 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:00:00,767 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-07 00:00:01,433 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 28 for LOIs [2019-10-07 00:00:01,441 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-07 00:00:01,446 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 00:00:01,446 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 00:00:01,447 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 281#(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)) [2019-10-07 00:00:01,447 INFO L193 IcfgInterpreter]: Reachable states at location L36-3 satisfy 266#(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)) [2019-10-07 00:00:01,447 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 286#(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)) [2019-10-07 00:00:01,448 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 295#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 00:00:01,448 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)) [2019-10-07 00:00:01,448 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)) [2019-10-07 00:00:01,449 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)) [2019-10-07 00:00:01,449 INFO L193 IcfgInterpreter]: Reachable states at location L37 satisfy 271#(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 00:00:01,449 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:00:01,450 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:00:01,450 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 300#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:00:01,450 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 00:00:01,450 INFO L193 IcfgInterpreter]: Reachable states at location L31-2 satisfy 261#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:00:01,451 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)) [2019-10-07 00:00:01,451 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 276#(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)))) [2019-10-07 00:00:01,451 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)) [2019-10-07 00:00:01,451 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 291#(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)) [2019-10-07 00:00:01,865 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 13 [2019-10-07 00:00:03,096 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 00:00:03,097 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13, 10] total 35 [2019-10-07 00:00:03,098 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2019-10-07 00:00:03,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2019-10-07 00:00:03,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=861, Unknown=0, NotChecked=0, Total=1190 [2019-10-07 00:00:03,101 INFO L87 Difference]: Start difference. First operand 80 states and 86 transitions. Second operand 35 states. [2019-10-07 00:00:05,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:00:05,205 INFO L93 Difference]: Finished difference Result 225 states and 308 transitions. [2019-10-07 00:00:05,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-10-07 00:00:05,205 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 76 [2019-10-07 00:00:05,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:00:05,208 INFO L225 Difference]: With dead ends: 225 [2019-10-07 00:00:05,208 INFO L226 Difference]: Without dead ends: 161 [2019-10-07 00:00:05,210 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 153 SyntacticMatches, 55 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2932 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=978, Invalid=3054, Unknown=0, NotChecked=0, Total=4032 [2019-10-07 00:00:05,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2019-10-07 00:00:05,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 152. [2019-10-07 00:00:05,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2019-10-07 00:00:05,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 158 transitions. [2019-10-07 00:00:05,233 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 158 transitions. Word has length 76 [2019-10-07 00:00:05,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:00:05,234 INFO L462 AbstractCegarLoop]: Abstraction has 152 states and 158 transitions. [2019-10-07 00:00:05,234 INFO L463 AbstractCegarLoop]: Interpolant automaton has 35 states. [2019-10-07 00:00:05,234 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 158 transitions. [2019-10-07 00:00:05,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-10-07 00:00:05,236 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:00:05,236 INFO L385 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:00:05,441 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:00:05,442 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:00:05,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:00:05,443 INFO L82 PathProgramCache]: Analyzing trace with hash 1663159223, now seen corresponding path program 4 times [2019-10-07 00:00:05,444 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:00:05,444 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:00:05,444 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:00:05,445 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:00:05,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:00:05,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:00:05,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1518 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1265 trivial. 0 not checked. [2019-10-07 00:00:05,974 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:00:05,975 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:00:05,975 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:00:06,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:00:06,133 INFO L256 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 24 conjunts are in the unsatisfiable core [2019-10-07 00:00:06,140 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:00:06,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1518 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1265 trivial. 0 not checked. [2019-10-07 00:00:06,183 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:00:06,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1518 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1265 trivial. 0 not checked. [2019-10-07 00:00:06,917 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:00:06,918 INFO L162 IcfgInterpreter]: Started Sifa with 17 locations of interest [2019-10-07 00:00:06,919 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:00:06,919 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:00:06,919 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:00:06,920 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:00:06,940 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-07 00:00:07,440 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 28 for LOIs [2019-10-07 00:00:07,451 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-07 00:00:07,454 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 00:00:07,454 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 00:00:07,454 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 281#(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)) [2019-10-07 00:00:07,455 INFO L193 IcfgInterpreter]: Reachable states at location L36-3 satisfy 266#(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)) [2019-10-07 00:00:07,455 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 286#(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)) [2019-10-07 00:00:07,455 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 295#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 00:00:07,455 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)) [2019-10-07 00:00:07,456 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)) [2019-10-07 00:00:07,456 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)) [2019-10-07 00:00:07,456 INFO L193 IcfgInterpreter]: Reachable states at location L37 satisfy 271#(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 00:00:07,456 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:00:07,456 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:00:07,457 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 300#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 00:00:07,457 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 00:00:07,457 INFO L193 IcfgInterpreter]: Reachable states at location L31-2 satisfy 261#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-07 00:00:07,457 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)) [2019-10-07 00:00:07,457 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 276#(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)))) [2019-10-07 00:00:07,458 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)) [2019-10-07 00:00:07,458 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 291#(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)) [2019-10-07 00:00:10,601 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 00:00:10,602 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25, 10] total 59 [2019-10-07 00:00:10,604 INFO L442 AbstractCegarLoop]: Interpolant automaton has 59 states [2019-10-07 00:00:10,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2019-10-07 00:00:10,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1205, Invalid=2217, Unknown=0, NotChecked=0, Total=3422 [2019-10-07 00:00:10,607 INFO L87 Difference]: Start difference. First operand 152 states and 158 transitions. Second operand 59 states. [2019-10-07 00:00:16,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:00:16,261 INFO L93 Difference]: Finished difference Result 429 states and 584 transitions. [2019-10-07 00:00:16,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2019-10-07 00:00:16,262 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 148 [2019-10-07 00:00:16,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:00:16,264 INFO L225 Difference]: With dead ends: 429 [2019-10-07 00:00:16,265 INFO L226 Difference]: Without dead ends: 305 [2019-10-07 00:00:16,270 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 297 SyntacticMatches, 115 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10918 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=3606, Invalid=8826, Unknown=0, NotChecked=0, Total=12432 [2019-10-07 00:00:16,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2019-10-07 00:00:16,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 296. [2019-10-07 00:00:16,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2019-10-07 00:00:16,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 302 transitions. [2019-10-07 00:00:16,310 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 302 transitions. Word has length 148 [2019-10-07 00:00:16,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:00:16,311 INFO L462 AbstractCegarLoop]: Abstraction has 296 states and 302 transitions. [2019-10-07 00:00:16,311 INFO L463 AbstractCegarLoop]: Interpolant automaton has 59 states. [2019-10-07 00:00:16,311 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 302 transitions. [2019-10-07 00:00:16,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2019-10-07 00:00:16,316 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:00:16,316 INFO L385 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:00:16,521 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:00:16,522 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:00:16,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:00:16,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1615525321, now seen corresponding path program 5 times [2019-10-07 00:00:16,524 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:00:16,524 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:00:16,525 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:00:16,525 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:00:16,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:00:16,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:00:17,946 INFO L134 CoverageAnalysis]: Checked inductivity of 6486 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 5405 trivial. 0 not checked. [2019-10-07 00:00:17,946 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:00:17,946 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:00:17,947 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