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_init3_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:34:29,066 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:34:29,068 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:34:29,086 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:34:29,086 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:34:29,088 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:34:29,090 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:34:29,099 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:34:29,104 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:34:29,107 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:34:29,108 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:34:29,109 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:34:29,110 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:34:29,112 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:34:29,114 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:34:29,115 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:34:29,116 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:34:29,118 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:34:29,119 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:34:29,124 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:34:29,127 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:34:29,130 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:34:29,132 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:34:29,133 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:34:29,135 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 21:34:29,146 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:34:29,147 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:34:29,149 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:34:29,149 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:34:29,176 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:34:29,177 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:34:29,178 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:34:29,178 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:34:29,178 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:34:29,178 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:34:29,179 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:34:29,179 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:34:29,179 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:34:29,179 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:34:29,179 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:34:29,180 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:34:29,180 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:34:29,180 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:34:29,180 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:34:29,180 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:34:29,180 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:34:29,181 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:34:29,181 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:34:29,181 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:34:29,181 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:34:29,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:34:29,182 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:34:29,182 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:34:29,182 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:34:29,182 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:34:29,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:34:29,182 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:34:29,183 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 21:34:29,453 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:34:29,466 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:34:29,469 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:34:29,470 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:34:29,471 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:34:29,472 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_init3_ground-1.i [2019-10-13 21:34:29,532 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0abef1ce3/981e4dbdf335401bb844c72a6d1a421e/FLAGc1320bf70 [2019-10-13 21:34:29,958 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:34:29,959 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_init3_ground-1.i [2019-10-13 21:34:29,965 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0abef1ce3/981e4dbdf335401bb844c72a6d1a421e/FLAGc1320bf70 [2019-10-13 21:34:30,365 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0abef1ce3/981e4dbdf335401bb844c72a6d1a421e [2019-10-13 21:34:30,375 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:34:30,377 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:34:30,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:34:30,378 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:34:30,381 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:34:30,382 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:34:30" (1/1) ... [2019-10-13 21:34:30,386 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33a1ee07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:30, skipping insertion in model container [2019-10-13 21:34:30,386 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:34:30" (1/1) ... [2019-10-13 21:34:30,394 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:34:30,411 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:34:30,643 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:34:30,648 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:34:30,668 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:34:30,688 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:34:30,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:30 WrapperNode [2019-10-13 21:34:30,688 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:34:30,689 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:34:30,689 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:34:30,689 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:34:30,778 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:30" (1/1) ... [2019-10-13 21:34:30,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:30" (1/1) ... [2019-10-13 21:34:30,786 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:30" (1/1) ... [2019-10-13 21:34:30,787 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:30" (1/1) ... [2019-10-13 21:34:30,794 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:30" (1/1) ... [2019-10-13 21:34:30,800 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:30" (1/1) ... [2019-10-13 21:34:30,803 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:30" (1/1) ... [2019-10-13 21:34:30,805 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:34:30,806 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:34:30,806 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:34:30,806 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:34:30,807 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:34:30,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:34:30,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:34:30,868 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 21:34:30,868 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:34:30,869 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:34:30,869 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 21:34:30,869 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:34:30,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:34:30,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:34:30,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:34:30,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:34:30,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:34:30,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:34:31,128 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:34:31,128 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:34:31,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:34:31 BoogieIcfgContainer [2019-10-13 21:34:31,130 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:34:31,131 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:34:31,132 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:34:31,135 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:34:31,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:34:30" (1/3) ... [2019-10-13 21:34:31,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@186f5e20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:34:31, skipping insertion in model container [2019-10-13 21:34:31,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:30" (2/3) ... [2019-10-13 21:34:31,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@186f5e20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:34:31, skipping insertion in model container [2019-10-13 21:34:31,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:34:31" (3/3) ... [2019-10-13 21:34:31,140 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_init3_ground-1.i [2019-10-13 21:34:31,156 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:34:31,167 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:34:31,180 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:34:31,210 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:34:31,210 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:34:31,211 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:34:31,211 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:34:31,211 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:34:31,211 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:34:31,211 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:34:31,211 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:34:31,230 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-10-13 21:34:31,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-13 21:34:31,237 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:34:31,238 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:34:31,240 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:34:31,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:34:31,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1905658029, now seen corresponding path program 1 times [2019-10-13 21:34:31,257 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:34:31,257 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387481926] [2019-10-13 21:34:31,258 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:34:31,258 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:34:31,258 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:34:31,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:34:31,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:34:31,419 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387481926] [2019-10-13 21:34:31,420 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:34:31,420 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:34:31,420 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909251848] [2019-10-13 21:34:31,424 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:34:31,424 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:34:31,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:34:31,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:34:31,441 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. [2019-10-13 21:34:31,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:34:31,506 INFO L93 Difference]: Finished difference Result 37 states and 48 transitions. [2019-10-13 21:34:31,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:34:31,508 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-10-13 21:34:31,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:34:31,516 INFO L225 Difference]: With dead ends: 37 [2019-10-13 21:34:31,516 INFO L226 Difference]: Without dead ends: 20 [2019-10-13 21:34:31,519 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:34:31,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-10-13 21:34:31,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-10-13 21:34:31,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-10-13 21:34:31,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2019-10-13 21:34:31,554 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 13 [2019-10-13 21:34:31,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:34:31,554 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2019-10-13 21:34:31,555 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:34:31,555 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2019-10-13 21:34:31,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-13 21:34:31,556 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:34:31,556 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:34:31,557 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:34:31,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:34:31,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1984082666, now seen corresponding path program 1 times [2019-10-13 21:34:31,558 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:34:31,558 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647922543] [2019-10-13 21:34:31,558 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:34:31,558 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:34:31,559 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:34:31,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:34:31,657 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 21:34:31,657 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647922543] [2019-10-13 21:34:31,658 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172958872] [2019-10-13 21:34:31,658 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:34:31,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:34:31,725 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:34:31,733 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:34:31,766 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 21:34:31,766 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:34:31,820 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 21:34:31,821 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1450562474] [2019-10-13 21:34:31,845 INFO L162 IcfgInterpreter]: Started Sifa with 14 locations of interest [2019-10-13 21:34:31,845 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:34:31,852 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:34:31,860 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:34:31,860 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:34:32,063 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 21:34:32,724 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 28 for LOIs [2019-10-13 21:34:32,738 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:34:32,745 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:34:32,746 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:34:32,746 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 167#(and (exists ((v_prenex_1 Int) (|v_main_~#a~0.base_BEFORE_CALL_1| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_1|) 0) 43)) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (= (select (select |#memory_int| v_prenex_1) 0) 43) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:34:32,747 INFO L193 IcfgInterpreter]: Reachable states at location L22 satisfy 157#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* main_~x~0 4) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (not (< main_~i~0 100000)) (<= main_~x~0 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 main_~x~0) (< main_~x~0 100000) (= main_~x~0 0) (<= 100000 main_~i~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:34:32,747 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 172#(and (exists ((v_prenex_1 Int) (|v_main_~#a~0.base_BEFORE_CALL_1| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_1|) 0) 43)) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (= (select (select |#memory_int| v_prenex_1) 0) 43) (<= 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)) [2019-10-13 21:34:32,747 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 181#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:34:32,748 INFO L193 IcfgInterpreter]: Reachable states at location L16-2 satisfy 147#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:34:32,748 INFO L193 IcfgInterpreter]: Reachable states at location L6-2 satisfy 71#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (= |#length| (store |old(#length)| |main_~#a~0.base| 400000)) (<= 0 main_~i~0) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (<= main_~i~0 0) (= 0 (select |old(#valid)| 0)) (= |#valid| (store |old(#valid)| |main_~#a~0.base| 1)) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0) (= main_~i~0 0))) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:34:32,748 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:34:32,748 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:34:32,749 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 186#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:34:32,749 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:34:32,749 INFO L193 IcfgInterpreter]: Reachable states at location L21-3 satisfy 152#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (not (< main_~i~0 100000)) (<= main_~x~0 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 main_~x~0) (= main_~x~0 0) (<= 100000 main_~i~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:34:32,750 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 162#(exists ((v_prenex_1 Int) (|v_main_~#a~0.base_BEFORE_CALL_1| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_1|) 0) 43)) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (= (select (select |#memory_int| v_prenex_1) 0) 43) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-13 21:34:32,750 INFO L193 IcfgInterpreter]: Reachable states at location L11-2 satisfy 109#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:34:32,750 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 177#(and (exists ((v_prenex_1 Int) (|v_main_~#a~0.base_BEFORE_CALL_1| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_1|) 0) 43)) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (= (select (select |#memory_int| v_prenex_1) 0) 43) (<= 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)) [2019-10-13 21:34:33,269 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 21:34:33,270 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 10] total 17 [2019-10-13 21:34:33,270 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098880074] [2019-10-13 21:34:33,272 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-10-13 21:34:33,273 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:34:33,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-10-13 21:34:33,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2019-10-13 21:34:33,274 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 17 states. [2019-10-13 21:34:33,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:34:33,959 INFO L93 Difference]: Finished difference Result 51 states and 65 transitions. [2019-10-13 21:34:33,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 21:34:33,960 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 16 [2019-10-13 21:34:33,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:34:33,961 INFO L225 Difference]: With dead ends: 51 [2019-10-13 21:34:33,962 INFO L226 Difference]: Without dead ends: 38 [2019-10-13 21:34:33,963 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 33 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2019-10-13 21:34:33,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-10-13 21:34:33,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 29. [2019-10-13 21:34:33,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-13 21:34:33,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2019-10-13 21:34:33,975 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 16 [2019-10-13 21:34:33,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:34:33,975 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2019-10-13 21:34:33,976 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-10-13 21:34:33,976 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2019-10-13 21:34:33,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-13 21:34:33,977 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:34:33,977 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:34:34,183 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:34:34,190 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:34:34,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:34:34,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1492132205, now seen corresponding path program 2 times [2019-10-13 21:34:34,191 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:34:34,191 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956341200] [2019-10-13 21:34:34,191 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:34:34,191 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:34:34,191 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:34:34,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:34:34,293 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-13 21:34:34,293 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956341200] [2019-10-13 21:34:34,293 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902151034] [2019-10-13 21:34:34,294 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:34:34,358 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-10-13 21:34:34,358 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:34:34,360 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:34:34,367 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:34:34,377 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-13 21:34:34,378 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:34:34,473 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-13 21:34:34,473 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1764660150] [2019-10-13 21:34:34,477 INFO L162 IcfgInterpreter]: Started Sifa with 14 locations of interest [2019-10-13 21:34:34,477 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:34:34,478 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:34:34,478 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:34:34,479 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:34:34,538 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 21:34:35,115 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 28 for LOIs [2019-10-13 21:34:35,139 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:34:35,146 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:34:35,147 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:34:35,147 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 167#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (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) (not (= 43 (select (select |#memory_int| v_prenex_2) 0))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= 43 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_2|) 0)) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0))))) [2019-10-13 21:34:35,147 INFO L193 IcfgInterpreter]: Reachable states at location L22 satisfy 157#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* main_~x~0 4) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (not (< main_~i~0 100000)) (<= main_~x~0 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 main_~x~0) (< main_~x~0 100000) (= main_~x~0 0) (<= 100000 main_~i~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:34:35,147 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 172#(and (<= __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) (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) (not (= 43 (select (select |#memory_int| v_prenex_2) 0))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= 43 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_2|) 0)) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0))))) [2019-10-13 21:34:35,148 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 181#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:34:35,148 INFO L193 IcfgInterpreter]: Reachable states at location L16-2 satisfy 147#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:34:35,148 INFO L193 IcfgInterpreter]: Reachable states at location L6-2 satisfy 71#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (= |#length| (store |old(#length)| |main_~#a~0.base| 400000)) (<= 0 main_~i~0) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (<= main_~i~0 0) (= 0 (select |old(#valid)| 0)) (= |#valid| (store |old(#valid)| |main_~#a~0.base| 1)) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0) (= main_~i~0 0))) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:34:35,149 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:34:35,149 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:34:35,149 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 186#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:34:35,149 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:34:35,150 INFO L193 IcfgInterpreter]: Reachable states at location L21-3 satisfy 152#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (not (< main_~i~0 100000)) (<= main_~x~0 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 main_~x~0) (= main_~x~0 0) (<= 100000 main_~i~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:34:35,155 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 162#(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) (not (= 43 (select (select |#memory_int| v_prenex_2) 0))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= 43 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_2|) 0)) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-13 21:34:35,156 INFO L193 IcfgInterpreter]: Reachable states at location L11-2 satisfy 109#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:34:35,156 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 177#(and (<= __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) (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) (not (= 43 (select (select |#memory_int| v_prenex_2) 0))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= 43 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_2|) 0)) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0))))) [2019-10-13 21:34:35,737 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 21:34:35,737 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 10] total 23 [2019-10-13 21:34:35,738 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419184548] [2019-10-13 21:34:35,739 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-10-13 21:34:35,739 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:34:35,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-10-13 21:34:35,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2019-10-13 21:34:35,740 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 23 states. [2019-10-13 21:34:36,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:34:36,755 INFO L93 Difference]: Finished difference Result 75 states and 98 transitions. [2019-10-13 21:34:36,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-13 21:34:36,760 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 25 [2019-10-13 21:34:36,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:34:36,761 INFO L225 Difference]: With dead ends: 75 [2019-10-13 21:34:36,761 INFO L226 Difference]: Without dead ends: 56 [2019-10-13 21:34:36,762 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 62 SyntacticMatches, 10 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=312, Invalid=1248, Unknown=0, NotChecked=0, Total=1560 [2019-10-13 21:34:36,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-10-13 21:34:36,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 47. [2019-10-13 21:34:36,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-10-13 21:34:36,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2019-10-13 21:34:36,773 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 25 [2019-10-13 21:34:36,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:34:36,774 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2019-10-13 21:34:36,774 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-10-13 21:34:36,774 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2019-10-13 21:34:36,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-13 21:34:36,776 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:34:36,776 INFO L380 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:34:36,979 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:34:36,980 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:34:36,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:34:36,980 INFO L82 PathProgramCache]: Analyzing trace with hash -776537459, now seen corresponding path program 3 times [2019-10-13 21:34:36,980 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:34:36,980 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430464007] [2019-10-13 21:34:36,981 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:34:36,981 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:34:36,981 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:34:37,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:34:37,177 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2019-10-13 21:34:37,178 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430464007] [2019-10-13 21:34:37,178 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629294659] [2019-10-13 21:34:37,178 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:34:37,257 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-13 21:34:37,257 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:34:37,259 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-13 21:34:37,262 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:34:37,278 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2019-10-13 21:34:37,278 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:34:37,472 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2019-10-13 21:34:37,472 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [209665648] [2019-10-13 21:34:37,474 INFO L162 IcfgInterpreter]: Started Sifa with 14 locations of interest [2019-10-13 21:34:37,474 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:34:37,474 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:34:37,475 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:34:37,475 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:34:37,504 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 21:34:37,895 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 28 for LOIs [2019-10-13 21:34:37,903 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:34:37,907 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:34:37,907 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:34:37,907 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 167#(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|) (= |#NULL.offset| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_3|) 0) 43)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| v_prenex_3) 0) 43) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:34:37,908 INFO L193 IcfgInterpreter]: Reachable states at location L22 satisfy 157#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* main_~x~0 4) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (not (< main_~i~0 100000)) (<= main_~x~0 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 main_~x~0) (< main_~x~0 100000) (= main_~x~0 0) (<= 100000 main_~i~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:34:37,908 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 172#(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|) (= |#NULL.offset| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_3|) 0) 43)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| v_prenex_3) 0) 43) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:34:37,908 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 181#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:34:37,908 INFO L193 IcfgInterpreter]: Reachable states at location L16-2 satisfy 147#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:34:37,909 INFO L193 IcfgInterpreter]: Reachable states at location L6-2 satisfy 71#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (= |#length| (store |old(#length)| |main_~#a~0.base| 400000)) (<= 0 main_~i~0) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (<= main_~i~0 0) (= 0 (select |old(#valid)| 0)) (= |#valid| (store |old(#valid)| |main_~#a~0.base| 1)) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0) (= main_~i~0 0))) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:34:37,909 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:34:37,909 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:34:37,909 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 186#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:34:37,909 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:34:37,910 INFO L193 IcfgInterpreter]: Reachable states at location L21-3 satisfy 152#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (not (< main_~i~0 100000)) (<= main_~x~0 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 main_~x~0) (= main_~x~0 0) (<= 100000 main_~i~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:34:37,910 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 162#(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|) (= |#NULL.offset| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_3|) 0) 43)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| v_prenex_3) 0) 43) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-13 21:34:37,910 INFO L193 IcfgInterpreter]: Reachable states at location L11-2 satisfy 109#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:34:37,911 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 177#(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|) (= |#NULL.offset| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_3|) 0) 43)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| v_prenex_3) 0) 43) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:34:38,692 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 21:34:38,692 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13, 10] total 35 [2019-10-13 21:34:38,693 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565119741] [2019-10-13 21:34:38,694 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2019-10-13 21:34:38,694 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:34:38,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2019-10-13 21:34:38,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=861, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:34:38,696 INFO L87 Difference]: Start difference. First operand 47 states and 50 transitions. Second operand 35 states. [2019-10-13 21:34:40,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:34:40,482 INFO L93 Difference]: Finished difference Result 123 states and 164 transitions. [2019-10-13 21:34:40,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-10-13 21:34:40,484 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 43 [2019-10-13 21:34:40,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:34:40,486 INFO L225 Difference]: With dead ends: 123 [2019-10-13 21:34:40,486 INFO L226 Difference]: Without dead ends: 92 [2019-10-13 21:34:40,488 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 87 SyntacticMatches, 22 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1777 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=978, Invalid=3054, Unknown=0, NotChecked=0, Total=4032 [2019-10-13 21:34:40,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2019-10-13 21:34:40,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 83. [2019-10-13 21:34:40,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2019-10-13 21:34:40,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 86 transitions. [2019-10-13 21:34:40,504 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 86 transitions. Word has length 43 [2019-10-13 21:34:40,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:34:40,504 INFO L462 AbstractCegarLoop]: Abstraction has 83 states and 86 transitions. [2019-10-13 21:34:40,504 INFO L463 AbstractCegarLoop]: Interpolant automaton has 35 states. [2019-10-13 21:34:40,504 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 86 transitions. [2019-10-13 21:34:40,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2019-10-13 21:34:40,507 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:34:40,507 INFO L380 BasicCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:34:40,712 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:34:40,713 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:34:40,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:34:40,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1525888205, now seen corresponding path program 4 times [2019-10-13 21:34:40,714 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:34:40,714 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925377099] [2019-10-13 21:34:40,714 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:34:40,715 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:34:40,715 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:34:40,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:34:41,126 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2019-10-13 21:34:41,126 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925377099] [2019-10-13 21:34:41,126 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918741926] [2019-10-13 21:34:41,127 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:34:41,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:34:41,244 INFO L256 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 24 conjunts are in the unsatisfiable core [2019-10-13 21:34:41,248 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:34:41,270 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2019-10-13 21:34:41,270 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:34:41,963 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2019-10-13 21:34:41,963 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [601408823] [2019-10-13 21:34:41,965 INFO L162 IcfgInterpreter]: Started Sifa with 14 locations of interest [2019-10-13 21:34:41,965 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:34:41,965 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:34:41,966 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:34:41,966 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:34:41,995 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 21:34:42,239 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 28 for LOIs [2019-10-13 21:34:42,245 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:34:42,249 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:34:42,249 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:34:42,249 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 167#(and (exists ((|v_main_~#a~0.base_BEFORE_CALL_4| Int) (v_prenex_4 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_4|) 0) 43)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (= (select (select |#memory_int| v_prenex_4) 0) 43) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:34:42,250 INFO L193 IcfgInterpreter]: Reachable states at location L22 satisfy 157#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (= |main_#t~mem1| (select (select |#memory_int| |main_~#a~0.base|) (+ (* main_~x~0 4) |main_~#a~0.offset|))) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (not (< main_~i~0 100000)) (<= main_~x~0 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 main_~x~0) (< main_~x~0 100000) (= main_~x~0 0) (<= 100000 main_~i~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:34:42,250 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 172#(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| 0) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_4|) 0) 43)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (= (select (select |#memory_int| v_prenex_4) 0) 43) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:34:42,250 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 181#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:34:42,250 INFO L193 IcfgInterpreter]: Reachable states at location L16-2 satisfy 147#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:34:42,251 INFO L193 IcfgInterpreter]: Reachable states at location L6-2 satisfy 71#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (= |#length| (store |old(#length)| |main_~#a~0.base| 400000)) (<= 0 main_~i~0) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (<= main_~i~0 0) (= 0 (select |old(#valid)| 0)) (= |#valid| (store |old(#valid)| |main_~#a~0.base| 1)) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0) (= main_~i~0 0))) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:34:42,251 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:34:42,251 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:34:42,251 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 186#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:34:42,251 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:34:42,251 INFO L193 IcfgInterpreter]: Reachable states at location L21-3 satisfy 152#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (not (< main_~i~0 100000)) (<= main_~x~0 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 main_~x~0) (= main_~x~0 0) (<= 100000 main_~i~0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:34:42,252 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 162#(exists ((|v_main_~#a~0.base_BEFORE_CALL_4| Int) (v_prenex_4 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_4|) 0) 43)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (= (select (select |#memory_int| v_prenex_4) 0) 43) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-13 21:34:42,252 INFO L193 IcfgInterpreter]: Reachable states at location L11-2 satisfy 109#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:34:42,252 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 177#(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| 0) (<= |#NULL.base| 0) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_4|) 0) 43)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (= (select (select |#memory_int| v_prenex_4) 0) 43) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:34:43,672 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 21:34:43,672 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25, 10] total 59 [2019-10-13 21:34:43,673 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182156325] [2019-10-13 21:34:43,675 INFO L442 AbstractCegarLoop]: Interpolant automaton has 59 states [2019-10-13 21:34:43,675 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:34:43,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2019-10-13 21:34:43,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1205, Invalid=2217, Unknown=0, NotChecked=0, Total=3422 [2019-10-13 21:34:43,678 INFO L87 Difference]: Start difference. First operand 83 states and 86 transitions. Second operand 59 states. [2019-10-13 21:34:47,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:34:47,419 INFO L93 Difference]: Finished difference Result 219 states and 296 transitions. [2019-10-13 21:34:47,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2019-10-13 21:34:47,421 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 79 [2019-10-13 21:34:47,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:34:47,424 INFO L225 Difference]: With dead ends: 219 [2019-10-13 21:34:47,424 INFO L226 Difference]: Without dead ends: 164 [2019-10-13 21:34:47,428 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 159 SyntacticMatches, 46 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6019 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=3606, Invalid=8826, Unknown=0, NotChecked=0, Total=12432 [2019-10-13 21:34:47,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2019-10-13 21:34:47,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 155. [2019-10-13 21:34:47,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2019-10-13 21:34:47,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 158 transitions. [2019-10-13 21:34:47,468 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 158 transitions. Word has length 79 [2019-10-13 21:34:47,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:34:47,468 INFO L462 AbstractCegarLoop]: Abstraction has 155 states and 158 transitions. [2019-10-13 21:34:47,468 INFO L463 AbstractCegarLoop]: Interpolant automaton has 59 states. [2019-10-13 21:34:47,468 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 158 transitions. [2019-10-13 21:34:47,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-10-13 21:34:47,471 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:34:47,471 INFO L380 BasicCegarLoop]: trace histogram [46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:34:47,679 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:34:47,680 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:34:47,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:34:47,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1051866803, now seen corresponding path program 5 times [2019-10-13 21:34:47,680 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:34:47,680 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084845995] [2019-10-13 21:34:47,681 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:34:47,681 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:34:47,681 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:34:47,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:34:48,781 INFO L134 CoverageAnalysis]: Checked inductivity of 3243 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 2162 trivial. 0 not checked. [2019-10-13 21:34:48,781 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084845995] [2019-10-13 21:34:48,781 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060183448] [2019-10-13 21:34:48,782 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true