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_copyInitSum2_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-06 23:44:32,469 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-06 23:44:32,471 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-06 23:44:32,483 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-06 23:44:32,492 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-06 23:44:32,493 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-06 23:44:32,494 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-06 23:44:32,495 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-06 23:44:32,496 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-06 23:44:32,497 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-06 23:44:32,501 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-06 23:44:32,503 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-06 23:44:32,507 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-06 23:44:32,510 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-06 23:44:32,511 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-06 23:44:32,512 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-06 23:44:32,517 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-06 23:44:32,528 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-06 23:44:32,529 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-06 23:44:32,532 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-06 23:44:32,533 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 23:44:32,553 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-06 23:44:32,554 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-06 23:44:32,556 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-06 23:44:32,556 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-06 23:44:32,556 INFO L138 SettingsManager]: * Use SBE=true [2019-10-06 23:44:32,556 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-06 23:44:32,556 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-06 23:44:32,557 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-06 23:44:32,557 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-06 23:44:32,557 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-06 23:44:32,558 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-06 23:44:32,558 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-06 23:44:32,558 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-06 23:44:32,559 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-06 23:44:32,559 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-06 23:44:32,559 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-06 23:44:32,559 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-06 23:44:32,560 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-06 23:44:32,560 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-06 23:44:32,560 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-06 23:44:32,560 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-06 23:44:32,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-06 23:44:32,561 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-06 23:44:32,561 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-06 23:44:32,561 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-06 23:44:32,562 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-06 23:44:32,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-06 23:44:32,562 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-06 23:44:32,562 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 23:44:32,845 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-06 23:44:32,864 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-06 23:44:32,869 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-06 23:44:32,870 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-06 23:44:32,871 INFO L275 PluginConnector]: CDTParser initialized [2019-10-06 23:44:32,871 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copyInitSum2_ground-1.i [2019-10-06 23:44:32,940 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94781566c/af2984a955214d2fadf888e2217c71e2/FLAGdd6578a8d [2019-10-06 23:44:33,407 INFO L306 CDTParser]: Found 1 translation units. [2019-10-06 23:44:33,408 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copyInitSum2_ground-1.i [2019-10-06 23:44:33,414 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94781566c/af2984a955214d2fadf888e2217c71e2/FLAGdd6578a8d [2019-10-06 23:44:33,836 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94781566c/af2984a955214d2fadf888e2217c71e2 [2019-10-06 23:44:33,846 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-06 23:44:33,848 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-06 23:44:33,850 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-06 23:44:33,850 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-06 23:44:33,854 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-06 23:44:33,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 11:44:33" (1/1) ... [2019-10-06 23:44:33,857 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ddb9b1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 11:44:33, skipping insertion in model container [2019-10-06 23:44:33,858 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 11:44:33" (1/1) ... [2019-10-06 23:44:33,865 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-06 23:44:33,884 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-06 23:44:34,079 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-06 23:44:34,089 INFO L188 MainTranslator]: Completed pre-run [2019-10-06 23:44:34,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-06 23:44:34,124 INFO L192 MainTranslator]: Completed translation [2019-10-06 23:44:34,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 11:44:34 WrapperNode [2019-10-06 23:44:34,125 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-06 23:44:34,126 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-06 23:44:34,126 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-06 23:44:34,126 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-06 23:44:34,221 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 11:44:34" (1/1) ... [2019-10-06 23:44:34,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 11:44:34" (1/1) ... [2019-10-06 23:44:34,230 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 11:44:34" (1/1) ... [2019-10-06 23:44:34,232 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 11:44:34" (1/1) ... [2019-10-06 23:44:34,239 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 11:44:34" (1/1) ... [2019-10-06 23:44:34,245 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 11:44:34" (1/1) ... [2019-10-06 23:44:34,246 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 11:44:34" (1/1) ... [2019-10-06 23:44:34,248 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-06 23:44:34,249 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-06 23:44:34,249 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-06 23:44:34,249 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-06 23:44:34,250 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 11:44:34" (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 23:44:34,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-06 23:44:34,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-06 23:44:34,298 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-06 23:44:34,298 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-06 23:44:34,298 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-06 23:44:34,298 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-06 23:44:34,298 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-06 23:44:34,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-06 23:44:34,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-06 23:44:34,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-06 23:44:34,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-06 23:44:34,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-06 23:44:34,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-06 23:44:34,658 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-06 23:44:34,658 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-06 23:44:34,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 11:44:34 BoogieIcfgContainer [2019-10-06 23:44:34,659 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-06 23:44:34,660 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-06 23:44:34,660 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-06 23:44:34,663 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-06 23:44:34,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 11:44:33" (1/3) ... [2019-10-06 23:44:34,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52e96337 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 11:44:34, skipping insertion in model container [2019-10-06 23:44:34,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 11:44:34" (2/3) ... [2019-10-06 23:44:34,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52e96337 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 11:44:34, skipping insertion in model container [2019-10-06 23:44:34,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 11:44:34" (3/3) ... [2019-10-06 23:44:34,666 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_copyInitSum2_ground-1.i [2019-10-06 23:44:34,673 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-06 23:44:34,680 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-06 23:44:34,690 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-06 23:44:34,711 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-06 23:44:34,712 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-06 23:44:34,712 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-06 23:44:34,712 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-06 23:44:34,712 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-06 23:44:34,712 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-06 23:44:34,712 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-06 23:44:34,712 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-06 23:44:34,725 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-10-06 23:44:34,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-06 23:44:34,731 INFO L377 BasicCegarLoop]: Found error trace [2019-10-06 23:44:34,731 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-06 23:44:34,733 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-06 23:44:34,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-06 23:44:34,739 INFO L82 PathProgramCache]: Analyzing trace with hash -2065348534, now seen corresponding path program 1 times [2019-10-06 23:44:34,746 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-06 23:44:34,746 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-06 23:44:34,746 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-06 23:44:34,746 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-06 23:44:34,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-06 23:44:34,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-06 23:44:34,904 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 23:44:34,905 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-06 23:44:34,905 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-06 23:44:34,906 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-06 23:44:34,909 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-06 23:44:34,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-06 23:44:34,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-06 23:44:34,924 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. [2019-10-06 23:44:34,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-06 23:44:34,968 INFO L93 Difference]: Finished difference Result 37 states and 48 transitions. [2019-10-06 23:44:34,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-06 23:44:34,971 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-10-06 23:44:34,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-06 23:44:34,978 INFO L225 Difference]: With dead ends: 37 [2019-10-06 23:44:34,978 INFO L226 Difference]: Without dead ends: 20 [2019-10-06 23:44:34,981 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 23:44:34,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-10-06 23:44:35,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-10-06 23:44:35,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-10-06 23:44:35,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2019-10-06 23:44:35,014 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 13 [2019-10-06 23:44:35,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-06 23:44:35,015 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2019-10-06 23:44:35,015 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-06 23:44:35,015 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2019-10-06 23:44:35,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-06 23:44:35,016 INFO L377 BasicCegarLoop]: Found error trace [2019-10-06 23:44:35,017 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-06 23:44:35,017 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-06 23:44:35,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-06 23:44:35,017 INFO L82 PathProgramCache]: Analyzing trace with hash 465570675, now seen corresponding path program 1 times [2019-10-06 23:44:35,018 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-06 23:44:35,018 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-06 23:44:35,018 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-06 23:44:35,018 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-06 23:44:35,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-06 23:44:35,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-06 23:44:35,094 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-06 23:44:35,094 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-06 23:44:35,094 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-06 23:44:35,095 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 23:44:35,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-06 23:44:35,152 INFO L256 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-06 23:44:35,159 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-06 23:44:35,197 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-06 23:44:35,198 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-06 23:44:35,231 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-06 23:44:35,231 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-06 23:44:35,256 INFO L162 IcfgInterpreter]: Started Sifa with 14 locations of interest [2019-10-06 23:44:35,257 INFO L169 IcfgInterpreter]: Building call graph [2019-10-06 23:44:35,264 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-06 23:44:35,271 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-06 23:44:35,272 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-06 23:44:35,437 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-06 23:44:36,391 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 28 for LOIs [2019-10-06 23:44:36,405 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-06 23:44:36,411 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-06 23:44:36,412 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-06 23:44:36,412 INFO L193 IcfgInterpreter]: Reachable states at location L14-3 satisfy 156#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |main_~#b~0.offset| 0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 |main_~#b~0.offset|) (= |main_~#b~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-06 23:44:36,413 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 176#(and (exists ((|v_main_~#b~0.base_BEFORE_CALL_1| Int) (v_prenex_1 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (not (= 42 (select (select |#memory_int| v_prenex_1) 0))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= 42 (select (select |#memory_int| |v_main_~#b~0.base_BEFORE_CALL_1|) 0)) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-06 23:44:36,413 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 181#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_main_~#b~0.base_BEFORE_CALL_1| Int) (v_prenex_1 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (not (= 42 (select (select |#memory_int| v_prenex_1) 0))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= 42 (select (select |#memory_int| |v_main_~#b~0.base_BEFORE_CALL_1|) 0)) (= |#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 23:44:36,413 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 190#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-06 23:44:36,414 INFO L193 IcfgInterpreter]: Reachable states at location L18-3 satisfy 161#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |main_~#b~0.offset| 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) (<= 0 |main_~#b~0.offset|) (= main_~x~0 0) (= |main_~#b~0.offset| 0) (<= 100000 main_~i~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-06 23:44:36,414 INFO L193 IcfgInterpreter]: Reachable states at location L7-2 satisfy 71#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |main_~#b~0.offset| 0) (= |main_~#b~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (= (store (store |old(#length)| |main_~#a~0.base| 400000) |main_~#b~0.base| 400000) |#length|) (<= 0 main_~i~0) (= 0 |#NULL.base|) (<= |main_~#b~0.offset| 0) (= |#valid| (store (store |old(#valid)| |main_~#a~0.base| 1) |main_~#b~0.base| 1)) (not (= |main_~#b~0.base| 0)) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (= |main_~#b~0.offset| 0) (= |main_~#a~0.offset| 0) (< |main_~#b~0.base| |#StackHeapBarrier|) (<= main_~i~0 0) (= 0 (select |old(#valid)| 0)) (= (select (store |old(#valid)| |main_~#a~0.base| 1) |main_~#b~0.base|) 0) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= |#NULL.base| 0) (<= 0 |main_~#b~0.offset|) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-06 23:44:36,414 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 23:44:36,415 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 23:44:36,415 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 195#(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 23:44:36,415 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-06 23:44:36,416 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 186#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_main_~#b~0.base_BEFORE_CALL_1| Int) (v_prenex_1 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (not (= 42 (select (select |#memory_int| v_prenex_1) 0))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= 42 (select (select |#memory_int| |v_main_~#b~0.base_BEFORE_CALL_1|) 0)) (= |#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 23:44:36,416 INFO L193 IcfgInterpreter]: Reachable states at location L11-3 satisfy 109#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |main_~#b~0.offset| 0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 |main_~#b~0.offset|) (= |main_~#b~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-06 23:44:36,416 INFO L193 IcfgInterpreter]: Reachable states at location L19 satisfy 166#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |main_~#b~0.offset| 0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (not (< main_~i~0 100000)) (= |main_#t~mem5| (select (select |#memory_int| |main_~#b~0.base|) (+ (* 4 main_~x~0) |main_~#b~0.offset|))) (<= main_~x~0 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 main_~x~0) (< main_~x~0 100000) (<= 0 |main_~#b~0.offset|) (= main_~x~0 0) (= |main_~#b~0.offset| 0) (<= 100000 main_~i~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-06 23:44:36,417 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 171#(exists ((|v_main_~#b~0.base_BEFORE_CALL_1| Int) (v_prenex_1 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (not (= 42 (select (select |#memory_int| v_prenex_1) 0))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= 42 (select (select |#memory_int| |v_main_~#b~0.base_BEFORE_CALL_1|) 0)) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-06 23:44:36,944 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-06 23:44:36,944 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 10] total 17 [2019-10-06 23:44:36,946 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-10-06 23:44:36,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-10-06 23:44:36,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2019-10-06 23:44:36,948 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 17 states. [2019-10-06 23:44:37,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-06 23:44:37,715 INFO L93 Difference]: Finished difference Result 51 states and 65 transitions. [2019-10-06 23:44:37,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-06 23:44:37,716 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 16 [2019-10-06 23:44:37,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-06 23:44:37,717 INFO L225 Difference]: With dead ends: 51 [2019-10-06 23:44:37,718 INFO L226 Difference]: Without dead ends: 38 [2019-10-06 23:44:37,719 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2019-10-06 23:44:37,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-10-06 23:44:37,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 29. [2019-10-06 23:44:37,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-06 23:44:37,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2019-10-06 23:44:37,728 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 16 [2019-10-06 23:44:37,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-06 23:44:37,729 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2019-10-06 23:44:37,729 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-10-06 23:44:37,730 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2019-10-06 23:44:37,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-06 23:44:37,730 INFO L377 BasicCegarLoop]: Found error trace [2019-10-06 23:44:37,731 INFO L385 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-06 23:44:37,931 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-06 23:44:37,932 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-06 23:44:37,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-06 23:44:37,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1023729270, now seen corresponding path program 2 times [2019-10-06 23:44:37,933 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-06 23:44:37,933 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-06 23:44:37,933 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-06 23:44:37,933 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-06 23:44:37,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-06 23:44:37,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-06 23:44:38,039 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-06 23:44:38,039 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-06 23:44:38,039 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-06 23:44:38,040 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 23:44:38,114 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-10-06 23:44:38,114 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-06 23:44:38,115 INFO L256 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-06 23:44:38,117 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-06 23:44:38,130 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-06 23:44:38,130 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-06 23:44:38,193 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-06 23:44:38,193 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-06 23:44:38,195 INFO L162 IcfgInterpreter]: Started Sifa with 14 locations of interest [2019-10-06 23:44:38,195 INFO L169 IcfgInterpreter]: Building call graph [2019-10-06 23:44:38,195 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-06 23:44:38,196 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-06 23:44:38,196 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-06 23:44:38,234 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-06 23:44:38,831 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 28 for LOIs [2019-10-06 23:44:38,849 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-06 23:44:38,854 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-06 23:44:38,855 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-06 23:44:38,855 INFO L193 IcfgInterpreter]: Reachable states at location L14-3 satisfy 153#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |main_~#b~0.offset| 0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 |main_~#b~0.offset|) (= |main_~#b~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-06 23:44:38,856 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 173#(and (exists ((|v_main_~#b~0.base_BEFORE_CALL_2| Int) (v_prenex_2 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= (select (select |#memory_int| |v_main_~#b~0.base_BEFORE_CALL_2|) 0) 42) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| v_prenex_2) 0) 42)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-06 23:44:38,856 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 178#(and (exists ((|v_main_~#b~0.base_BEFORE_CALL_2| Int) (v_prenex_2 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= (select (select |#memory_int| |v_main_~#b~0.base_BEFORE_CALL_2|) 0) 42) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| v_prenex_2) 0) 42)) (<= 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 23:44:38,856 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 187#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-06 23:44:38,856 INFO L193 IcfgInterpreter]: Reachable states at location L18-3 satisfy 158#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |main_~#b~0.offset| 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) (<= 0 |main_~#b~0.offset|) (= main_~x~0 0) (= |main_~#b~0.offset| 0) (<= 100000 main_~i~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-06 23:44:38,857 INFO L193 IcfgInterpreter]: Reachable states at location L7-2 satisfy 71#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |main_~#b~0.offset| 0) (= |main_~#b~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (= (store (store |old(#length)| |main_~#a~0.base| 400000) |main_~#b~0.base| 400000) |#length|) (<= 0 main_~i~0) (= 0 |#NULL.base|) (<= |main_~#b~0.offset| 0) (= |#valid| (store (store |old(#valid)| |main_~#a~0.base| 1) |main_~#b~0.base| 1)) (not (= |main_~#b~0.base| 0)) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (= |main_~#b~0.offset| 0) (= |main_~#a~0.offset| 0) (< |main_~#b~0.base| |#StackHeapBarrier|) (<= main_~i~0 0) (= 0 (select |old(#valid)| 0)) (= (select (store |old(#valid)| |main_~#a~0.base| 1) |main_~#b~0.base|) 0) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= |#NULL.base| 0) (<= 0 |main_~#b~0.offset|) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-06 23:44:38,857 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 23:44:38,857 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 23:44:38,857 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 192#(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 23:44:38,857 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-06 23:44:38,858 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 183#(and (exists ((|v_main_~#b~0.base_BEFORE_CALL_2| Int) (v_prenex_2 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= (select (select |#memory_int| |v_main_~#b~0.base_BEFORE_CALL_2|) 0) 42) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| v_prenex_2) 0) 42)) (<= 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 23:44:38,858 INFO L193 IcfgInterpreter]: Reachable states at location L11-3 satisfy 109#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |main_~#b~0.offset| 0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 |main_~#b~0.offset|) (= |main_~#b~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-06 23:44:38,858 INFO L193 IcfgInterpreter]: Reachable states at location L19 satisfy 163#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |main_~#b~0.offset| 0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (not (< main_~i~0 100000)) (= |main_#t~mem5| (select (select |#memory_int| |main_~#b~0.base|) (+ (* 4 main_~x~0) |main_~#b~0.offset|))) (<= main_~x~0 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 main_~x~0) (< main_~x~0 100000) (<= 0 |main_~#b~0.offset|) (= main_~x~0 0) (= |main_~#b~0.offset| 0) (<= 100000 main_~i~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-06 23:44:38,859 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 168#(exists ((|v_main_~#b~0.base_BEFORE_CALL_2| Int) (v_prenex_2 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= (select (select |#memory_int| |v_main_~#b~0.base_BEFORE_CALL_2|) 0) 42) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| v_prenex_2) 0) 42)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-06 23:44:39,413 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-06 23:44:39,413 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 10] total 23 [2019-10-06 23:44:39,414 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-10-06 23:44:39,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-10-06 23:44:39,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2019-10-06 23:44:39,415 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 23 states. [2019-10-06 23:44:40,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-06 23:44:40,571 INFO L93 Difference]: Finished difference Result 75 states and 98 transitions. [2019-10-06 23:44:40,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-06 23:44:40,571 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 25 [2019-10-06 23:44:40,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-06 23:44:40,573 INFO L225 Difference]: With dead ends: 75 [2019-10-06 23:44:40,573 INFO L226 Difference]: Without dead ends: 56 [2019-10-06 23:44:40,574 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 62 SyntacticMatches, 10 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=312, Invalid=1248, Unknown=0, NotChecked=0, Total=1560 [2019-10-06 23:44:40,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-10-06 23:44:40,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 47. [2019-10-06 23:44:40,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-10-06 23:44:40,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2019-10-06 23:44:40,586 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 25 [2019-10-06 23:44:40,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-06 23:44:40,586 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2019-10-06 23:44:40,586 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-10-06 23:44:40,586 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2019-10-06 23:44:40,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-06 23:44:40,587 INFO L377 BasicCegarLoop]: Found error trace [2019-10-06 23:44:40,588 INFO L385 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-06 23:44:40,791 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-06 23:44:40,791 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-06 23:44:40,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-06 23:44:40,792 INFO L82 PathProgramCache]: Analyzing trace with hash -173978774, now seen corresponding path program 3 times [2019-10-06 23:44:40,792 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-06 23:44:40,792 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-06 23:44:40,792 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-06 23:44:40,793 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-06 23:44:40,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-06 23:44:40,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-06 23:44:40,996 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2019-10-06 23:44:40,996 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-06 23:44:40,997 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-06 23:44:40,997 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 23:44:41,082 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-06 23:44:41,083 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-06 23:44:41,084 INFO L256 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-06 23:44:41,091 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-06 23:44:41,111 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2019-10-06 23:44:41,112 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-06 23:44:41,294 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2019-10-06 23:44:41,295 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-06 23:44:41,296 INFO L162 IcfgInterpreter]: Started Sifa with 14 locations of interest [2019-10-06 23:44:41,296 INFO L169 IcfgInterpreter]: Building call graph [2019-10-06 23:44:41,297 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-06 23:44:41,297 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-06 23:44:41,297 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-06 23:44:41,316 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-06 23:44:41,784 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 28 for LOIs [2019-10-06 23:44:41,792 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-06 23:44:41,796 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-06 23:44:41,796 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-06 23:44:41,796 INFO L193 IcfgInterpreter]: Reachable states at location L14-3 satisfy 153#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |main_~#b~0.offset| 0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 |main_~#b~0.offset|) (= |main_~#b~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-06 23:44:41,800 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 173#(and (exists ((v_prenex_3 Int) (|v_main_~#b~0.base_BEFORE_CALL_3| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (not (= 42 (select (select |#memory_int| v_prenex_3) 0))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= 42 (select (select |#memory_int| |v_main_~#b~0.base_BEFORE_CALL_3|) 0)) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-06 23:44:41,802 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 178#(and (<= __VERIFIER_assert_~cond 0) (exists ((v_prenex_3 Int) (|v_main_~#b~0.base_BEFORE_CALL_3| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (not (= 42 (select (select |#memory_int| v_prenex_3) 0))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= 42 (select (select |#memory_int| |v_main_~#b~0.base_BEFORE_CALL_3|) 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 23:44:41,802 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 187#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-06 23:44:41,802 INFO L193 IcfgInterpreter]: Reachable states at location L18-3 satisfy 158#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |main_~#b~0.offset| 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) (<= 0 |main_~#b~0.offset|) (= main_~x~0 0) (= |main_~#b~0.offset| 0) (<= 100000 main_~i~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-06 23:44:41,802 INFO L193 IcfgInterpreter]: Reachable states at location L7-2 satisfy 71#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |main_~#b~0.offset| 0) (= |main_~#b~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (= (store (store |old(#length)| |main_~#a~0.base| 400000) |main_~#b~0.base| 400000) |#length|) (<= 0 main_~i~0) (= 0 |#NULL.base|) (<= |main_~#b~0.offset| 0) (= |#valid| (store (store |old(#valid)| |main_~#a~0.base| 1) |main_~#b~0.base| 1)) (not (= |main_~#b~0.base| 0)) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (= |main_~#b~0.offset| 0) (= |main_~#a~0.offset| 0) (< |main_~#b~0.base| |#StackHeapBarrier|) (<= main_~i~0 0) (= 0 (select |old(#valid)| 0)) (= (select (store |old(#valid)| |main_~#a~0.base| 1) |main_~#b~0.base|) 0) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= |#NULL.base| 0) (<= 0 |main_~#b~0.offset|) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-06 23:44:41,803 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 23:44:41,803 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 23:44:41,803 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 192#(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 23:44:41,803 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-06 23:44:41,804 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 183#(and (<= __VERIFIER_assert_~cond 0) (exists ((v_prenex_3 Int) (|v_main_~#b~0.base_BEFORE_CALL_3| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (not (= 42 (select (select |#memory_int| v_prenex_3) 0))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= 42 (select (select |#memory_int| |v_main_~#b~0.base_BEFORE_CALL_3|) 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 23:44:41,804 INFO L193 IcfgInterpreter]: Reachable states at location L11-3 satisfy 109#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |main_~#b~0.offset| 0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 |main_~#b~0.offset|) (= |main_~#b~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-06 23:44:41,804 INFO L193 IcfgInterpreter]: Reachable states at location L19 satisfy 163#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |main_~#b~0.offset| 0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (not (< main_~i~0 100000)) (= |main_#t~mem5| (select (select |#memory_int| |main_~#b~0.base|) (+ (* 4 main_~x~0) |main_~#b~0.offset|))) (<= main_~x~0 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 main_~x~0) (< main_~x~0 100000) (<= 0 |main_~#b~0.offset|) (= main_~x~0 0) (= |main_~#b~0.offset| 0) (<= 100000 main_~i~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-06 23:44:41,804 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 168#(exists ((v_prenex_3 Int) (|v_main_~#b~0.base_BEFORE_CALL_3| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (not (= 42 (select (select |#memory_int| v_prenex_3) 0))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= 42 (select (select |#memory_int| |v_main_~#b~0.base_BEFORE_CALL_3|) 0)) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-06 23:44:42,616 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-06 23:44:42,616 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13, 10] total 35 [2019-10-06 23:44:42,617 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2019-10-06 23:44:42,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2019-10-06 23:44:42,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=861, Unknown=0, NotChecked=0, Total=1190 [2019-10-06 23:44:42,618 INFO L87 Difference]: Start difference. First operand 47 states and 50 transitions. Second operand 35 states. [2019-10-06 23:44:44,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-06 23:44:44,657 INFO L93 Difference]: Finished difference Result 123 states and 164 transitions. [2019-10-06 23:44:44,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-10-06 23:44:44,660 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 43 [2019-10-06 23:44:44,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-06 23:44:44,662 INFO L225 Difference]: With dead ends: 123 [2019-10-06 23:44:44,662 INFO L226 Difference]: Without dead ends: 92 [2019-10-06 23:44:44,665 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 87 SyntacticMatches, 22 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1777 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=978, Invalid=3054, Unknown=0, NotChecked=0, Total=4032 [2019-10-06 23:44:44,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2019-10-06 23:44:44,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 83. [2019-10-06 23:44:44,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2019-10-06 23:44:44,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 86 transitions. [2019-10-06 23:44:44,681 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 86 transitions. Word has length 43 [2019-10-06 23:44:44,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-06 23:44:44,682 INFO L462 AbstractCegarLoop]: Abstraction has 83 states and 86 transitions. [2019-10-06 23:44:44,682 INFO L463 AbstractCegarLoop]: Interpolant automaton has 35 states. [2019-10-06 23:44:44,682 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 86 transitions. [2019-10-06 23:44:44,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2019-10-06 23:44:44,684 INFO L377 BasicCegarLoop]: Found error trace [2019-10-06 23:44:44,685 INFO L385 BasicCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-06 23:44:44,889 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-06 23:44:44,890 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-06 23:44:44,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-06 23:44:44,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1373570858, now seen corresponding path program 4 times [2019-10-06 23:44:44,891 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-06 23:44:44,891 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-06 23:44:44,892 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-06 23:44:44,892 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-06 23:44:44,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-06 23:44:44,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-06 23:44:45,241 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2019-10-06 23:44:45,242 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-06 23:44:45,242 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-06 23:44:45,242 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 23:44:45,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-06 23:44:45,356 INFO L256 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 24 conjunts are in the unsatisfiable core [2019-10-06 23:44:45,360 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-06 23:44:45,377 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2019-10-06 23:44:45,377 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-06 23:44:46,026 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2019-10-06 23:44:46,026 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-06 23:44:46,027 INFO L162 IcfgInterpreter]: Started Sifa with 14 locations of interest [2019-10-06 23:44:46,028 INFO L169 IcfgInterpreter]: Building call graph [2019-10-06 23:44:46,028 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-06 23:44:46,028 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-06 23:44:46,028 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-06 23:44:46,054 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-06 23:44:46,595 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 28 for LOIs [2019-10-06 23:44:46,603 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-06 23:44:46,607 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-06 23:44:46,607 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-06 23:44:46,607 INFO L193 IcfgInterpreter]: Reachable states at location L14-3 satisfy 156#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |main_~#b~0.offset| 0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 |main_~#b~0.offset|) (= |main_~#b~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-06 23:44:46,607 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 176#(and (exists ((v_prenex_4 Int) (|v_main_~#b~0.base_BEFORE_CALL_4| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (= 42 (select (select |#memory_int| |v_main_~#b~0.base_BEFORE_CALL_4|) 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (= 42 (select (select |#memory_int| v_prenex_4) 0))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-06 23:44:46,608 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 181#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_prenex_4 Int) (|v_main_~#b~0.base_BEFORE_CALL_4| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (= 42 (select (select |#memory_int| |v_main_~#b~0.base_BEFORE_CALL_4|) 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (= 42 (select (select |#memory_int| v_prenex_4) 0))) (= |#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 23:44:46,608 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 190#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-06 23:44:46,608 INFO L193 IcfgInterpreter]: Reachable states at location L18-3 satisfy 161#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |main_~#b~0.offset| 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) (<= 0 |main_~#b~0.offset|) (= main_~x~0 0) (= |main_~#b~0.offset| 0) (<= 100000 main_~i~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-06 23:44:46,608 INFO L193 IcfgInterpreter]: Reachable states at location L7-2 satisfy 71#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |main_~#b~0.offset| 0) (= |main_~#b~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (= (store (store |old(#length)| |main_~#a~0.base| 400000) |main_~#b~0.base| 400000) |#length|) (<= 0 main_~i~0) (= 0 |#NULL.base|) (<= |main_~#b~0.offset| 0) (= |#valid| (store (store |old(#valid)| |main_~#a~0.base| 1) |main_~#b~0.base| 1)) (not (= |main_~#b~0.base| 0)) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (= |main_~#b~0.offset| 0) (= |main_~#a~0.offset| 0) (< |main_~#b~0.base| |#StackHeapBarrier|) (<= main_~i~0 0) (= 0 (select |old(#valid)| 0)) (= (select (store |old(#valid)| |main_~#a~0.base| 1) |main_~#b~0.base|) 0) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= |#NULL.base| 0) (<= 0 |main_~#b~0.offset|) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-06 23:44:46,608 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 23:44:46,609 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 23:44:46,609 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 195#(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 23:44:46,609 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-06 23:44:46,609 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 186#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_prenex_4 Int) (|v_main_~#b~0.base_BEFORE_CALL_4| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (= 42 (select (select |#memory_int| |v_main_~#b~0.base_BEFORE_CALL_4|) 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (= 42 (select (select |#memory_int| v_prenex_4) 0))) (= |#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 23:44:46,609 INFO L193 IcfgInterpreter]: Reachable states at location L11-3 satisfy 109#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |main_~#b~0.offset| 0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 |main_~#b~0.offset|) (= |main_~#b~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-06 23:44:46,610 INFO L193 IcfgInterpreter]: Reachable states at location L19 satisfy 166#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |main_~#b~0.offset| 0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (not (< main_~i~0 100000)) (= |main_#t~mem5| (select (select |#memory_int| |main_~#b~0.base|) (+ (* 4 main_~x~0) |main_~#b~0.offset|))) (<= main_~x~0 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 main_~x~0) (< main_~x~0 100000) (<= 0 |main_~#b~0.offset|) (= main_~x~0 0) (= |main_~#b~0.offset| 0) (<= 100000 main_~i~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-06 23:44:46,610 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 171#(exists ((v_prenex_4 Int) (|v_main_~#b~0.base_BEFORE_CALL_4| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (= 42 (select (select |#memory_int| |v_main_~#b~0.base_BEFORE_CALL_4|) 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (= 42 (select (select |#memory_int| v_prenex_4) 0))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-06 23:44:48,382 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-06 23:44:48,383 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25, 10] total 59 [2019-10-06 23:44:48,384 INFO L442 AbstractCegarLoop]: Interpolant automaton has 59 states [2019-10-06 23:44:48,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2019-10-06 23:44:48,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1205, Invalid=2217, Unknown=0, NotChecked=0, Total=3422 [2019-10-06 23:44:48,387 INFO L87 Difference]: Start difference. First operand 83 states and 86 transitions. Second operand 59 states. [2019-10-06 23:44:52,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-06 23:44:52,825 INFO L93 Difference]: Finished difference Result 219 states and 296 transitions. [2019-10-06 23:44:52,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2019-10-06 23:44:52,826 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 79 [2019-10-06 23:44:52,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-06 23:44:52,828 INFO L225 Difference]: With dead ends: 219 [2019-10-06 23:44:52,828 INFO L226 Difference]: Without dead ends: 164 [2019-10-06 23:44:52,832 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 159 SyntacticMatches, 46 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6019 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=3606, Invalid=8826, Unknown=0, NotChecked=0, Total=12432 [2019-10-06 23:44:52,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2019-10-06 23:44:52,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 155. [2019-10-06 23:44:52,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2019-10-06 23:44:52,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 158 transitions. [2019-10-06 23:44:52,855 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 158 transitions. Word has length 79 [2019-10-06 23:44:52,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-06 23:44:52,856 INFO L462 AbstractCegarLoop]: Abstraction has 155 states and 158 transitions. [2019-10-06 23:44:52,856 INFO L463 AbstractCegarLoop]: Interpolant automaton has 59 states. [2019-10-06 23:44:52,856 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 158 transitions. [2019-10-06 23:44:52,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-10-06 23:44:52,861 INFO L377 BasicCegarLoop]: Found error trace [2019-10-06 23:44:52,861 INFO L385 BasicCegarLoop]: trace histogram [46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-06 23:44:53,065 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-06 23:44:53,066 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-06 23:44:53,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-06 23:44:53,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1915231914, now seen corresponding path program 5 times [2019-10-06 23:44:53,067 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-06 23:44:53,067 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-06 23:44:53,068 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-06 23:44:53,068 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-06 23:44:53,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-06 23:44:53,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-06 23:44:54,161 INFO L134 CoverageAnalysis]: Checked inductivity of 3243 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 2162 trivial. 0 not checked. [2019-10-06 23:44:54,161 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-06 23:44:54,161 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-06 23:44:54,162 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