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-industry-pattern/array_of_struct_ptr_flag_init.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:37:04,404 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:37:04,407 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:37:04,425 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:37:04,425 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:37:04,426 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:37:04,428 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:37:04,429 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:37:04,431 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:37:04,432 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:37:04,433 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:37:04,434 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:37:04,434 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:37:04,436 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:37:04,436 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:37:04,438 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:37:04,438 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:37:04,439 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:37:04,441 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:37:04,443 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:37:04,445 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:37:04,446 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:37:04,447 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:37:04,447 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:37:04,452 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 21:37:04,463 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:37:04,467 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:37:04,468 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:37:04,471 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 21:37:04,494 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:37:04,494 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:37:04,496 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:37:04,497 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:37:04,497 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:37:04,497 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:37:04,498 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:37:04,498 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:37:04,498 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:37:04,498 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:37:04,499 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:37:04,500 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:37:04,500 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:37:04,500 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:37:04,501 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:37:04,501 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:37:04,501 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:37:04,501 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:37:04,501 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:37:04,502 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:37:04,502 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:37:04,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:37:04,502 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:37:04,503 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:37:04,503 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:37:04,503 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:37:04,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:37:04,503 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:37:04,504 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 21:37:04,799 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:37:04,819 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:37:04,823 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:37:04,824 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:37:04,825 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:37:04,825 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-industry-pattern/array_of_struct_ptr_flag_init.i [2019-10-13 21:37:04,894 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ff1049a9/9ddf0ff93b044587a56ede02dd271de7/FLAGdb6e4aabc [2019-10-13 21:37:05,375 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:37:05,376 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-industry-pattern/array_of_struct_ptr_flag_init.i [2019-10-13 21:37:05,383 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ff1049a9/9ddf0ff93b044587a56ede02dd271de7/FLAGdb6e4aabc [2019-10-13 21:37:05,729 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ff1049a9/9ddf0ff93b044587a56ede02dd271de7 [2019-10-13 21:37:05,740 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:37:05,742 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:37:05,743 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:37:05,743 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:37:05,746 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:37:05,747 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:37:05" (1/1) ... [2019-10-13 21:37:05,750 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d0e25df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:37:05, skipping insertion in model container [2019-10-13 21:37:05,750 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:37:05" (1/1) ... [2019-10-13 21:37:05,758 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:37:05,780 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:37:06,015 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:37:06,026 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:37:06,044 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:37:06,060 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:37:06,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:37:06 WrapperNode [2019-10-13 21:37:06,061 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:37:06,061 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:37:06,062 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:37:06,062 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:37:06,157 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:37:06" (1/1) ... [2019-10-13 21:37:06,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:37:06" (1/1) ... [2019-10-13 21:37:06,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:37:06" (1/1) ... [2019-10-13 21:37:06,166 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:37:06" (1/1) ... [2019-10-13 21:37:06,175 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:37:06" (1/1) ... [2019-10-13 21:37:06,181 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:37:06" (1/1) ... [2019-10-13 21:37:06,183 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:37:06" (1/1) ... [2019-10-13 21:37:06,186 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:37:06,186 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:37:06,187 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:37:06,187 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:37:06,188 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:37:06" (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 21:37:06,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:37:06,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:37:06,245 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 21:37:06,245 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2019-10-13 21:37:06,246 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:37:06,246 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:37:06,246 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:37:06,246 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 21:37:06,246 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-10-13 21:37:06,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:37:06,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:37:06,247 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:37:06,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:37:06,247 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:37:06,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:37:06,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:37:06,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:37:06,670 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:37:06,671 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-13 21:37:06,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:37:06 BoogieIcfgContainer [2019-10-13 21:37:06,672 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:37:06,673 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:37:06,674 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:37:06,677 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:37:06,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:37:05" (1/3) ... [2019-10-13 21:37:06,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@723b35c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:37:06, skipping insertion in model container [2019-10-13 21:37:06,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:37:06" (2/3) ... [2019-10-13 21:37:06,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@723b35c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:37:06, skipping insertion in model container [2019-10-13 21:37:06,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:37:06" (3/3) ... [2019-10-13 21:37:06,683 INFO L109 eAbstractionObserver]: Analyzing ICFG array_of_struct_ptr_flag_init.i [2019-10-13 21:37:06,695 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:37:06,706 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:37:06,718 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:37:06,741 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:37:06,741 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:37:06,742 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:37:06,742 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:37:06,742 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:37:06,742 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:37:06,742 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:37:06,742 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:37:06,757 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2019-10-13 21:37:06,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-13 21:37:06,764 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:37:06,765 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:37:06,766 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:37:06,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:37:06,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1479269286, now seen corresponding path program 1 times [2019-10-13 21:37:06,779 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:37:06,779 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37633717] [2019-10-13 21:37:06,780 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:37:06,780 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:37:06,780 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:37:06,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:37:06,949 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 21:37:06,950 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37633717] [2019-10-13 21:37:06,952 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:37:06,952 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:37:06,953 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534490983] [2019-10-13 21:37:06,958 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:37:06,958 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:37:06,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:37:06,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:37:06,973 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 3 states. [2019-10-13 21:37:07,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:37:07,075 INFO L93 Difference]: Finished difference Result 45 states and 57 transitions. [2019-10-13 21:37:07,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:37:07,078 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-10-13 21:37:07,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:37:07,088 INFO L225 Difference]: With dead ends: 45 [2019-10-13 21:37:07,089 INFO L226 Difference]: Without dead ends: 28 [2019-10-13 21:37:07,093 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 21:37:07,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-10-13 21:37:07,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2019-10-13 21:37:07,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-10-13 21:37:07,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2019-10-13 21:37:07,140 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 17 [2019-10-13 21:37:07,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:37:07,140 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2019-10-13 21:37:07,141 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:37:07,141 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2019-10-13 21:37:07,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-13 21:37:07,142 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:37:07,142 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:37:07,144 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:37:07,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:37:07,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1182159136, now seen corresponding path program 1 times [2019-10-13 21:37:07,145 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:37:07,146 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490708297] [2019-10-13 21:37:07,146 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:37:07,146 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:37:07,146 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:37:07,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:37:07,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 21:37:07,250 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490708297] [2019-10-13 21:37:07,250 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:37:07,250 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:37:07,250 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642907845] [2019-10-13 21:37:07,253 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:37:07,254 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:37:07,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:37:07,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:37:07,257 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 4 states. [2019-10-13 21:37:07,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:37:07,315 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2019-10-13 21:37:07,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:37:07,317 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2019-10-13 21:37:07,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:37:07,319 INFO L225 Difference]: With dead ends: 39 [2019-10-13 21:37:07,319 INFO L226 Difference]: Without dead ends: 24 [2019-10-13 21:37:07,320 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:37:07,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-10-13 21:37:07,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-10-13 21:37:07,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-10-13 21:37:07,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2019-10-13 21:37:07,332 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 18 [2019-10-13 21:37:07,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:37:07,333 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2019-10-13 21:37:07,333 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:37:07,334 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2019-10-13 21:37:07,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-13 21:37:07,337 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:37:07,337 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:37:07,337 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:37:07,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:37:07,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1245451041, now seen corresponding path program 1 times [2019-10-13 21:37:07,340 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:37:07,340 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087104917] [2019-10-13 21:37:07,341 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:37:07,341 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:37:07,341 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:37:07,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:37:07,469 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 21:37:07,469 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087104917] [2019-10-13 21:37:07,470 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228957753] [2019-10-13 21:37:07,470 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 21:37:07,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:37:07,546 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-13 21:37:07,554 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:37:07,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 21:37:07,629 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:37:07,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 21:37:07,732 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1423746605] [2019-10-13 21:37:07,759 INFO L162 IcfgInterpreter]: Started Sifa with 18 locations of interest [2019-10-13 21:37:07,760 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:37:07,773 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:37:07,787 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:37:07,788 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:37:07,985 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 24 for LOIs [2019-10-13 21:37:09,578 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 37 for LOIs [2019-10-13 21:37:09,597 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:37:09,617 INFO L199 IcfgInterpreter]: Interpreting procedure init with input of size 40 for LOIs [2019-10-13 21:37:09,788 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:37:09,789 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:37:09,789 INFO L193 IcfgInterpreter]: Reachable states at location L23-1 satisfy 85#(and (< |main_~#a~0.base| |#StackHeapBarrier|) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 main_~flag~0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (not (= 0 |main_~#a~0.base|)) (= main_~flag~0 0) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (<= main_~flag~0 0) (<= 0 |#NULL.offset|) (= 0 (select |old(#valid)| 0)) (<= |#NULL.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:37:09,790 INFO L193 IcfgInterpreter]: Reachable states at location initENTRY satisfy 425#(and (<= 100000 |init_#in~size|) (= 0 |#NULL.base|) (= (select |old(#length)| |init_#in~a.base|) 400000) (<= |#NULL.base| 0) (= 0 |init_#in~a.offset|) (not (= 0 |init_#in~a.base|)) (<= |init_#in~a.offset| 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (<= 0 |init_#in~a.offset|) (< |init_#in~a.base| |#StackHeapBarrier|) (= |#valid| |old(#valid)|) (= 1 (select |old(#valid)| |init_#in~a.base|)) (<= |init_#in~size| 100000) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |init_#in~size| 100000) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2019-10-13 21:37:09,790 INFO L193 IcfgInterpreter]: Reachable states at location L33 satisfy 293#(and (<= main_~i~1 0) (and (= |#NULL.base| 0) (<= |#NULL.base| 0) (<= 0 main_~flag~0) (< main_~i~1 100000) (= main_~i~1 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= 0 main_~i~1) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:37:09,790 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 416#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:37:09,790 INFO L193 IcfgInterpreter]: Reachable states at location L23 satisfy 38#(and (< |main_~#a~0.base| |#StackHeapBarrier|) (= |#length| (store |old(#length)| |main_~#a~0.base| 400000)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 main_~flag~0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (not (= 0 |main_~#a~0.base|)) (= main_~flag~0 0) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (<= main_~flag~0 0) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= |#valid| (store |old(#valid)| |main_~#a~0.base| 1)) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2019-10-13 21:37:09,791 INFO L193 IcfgInterpreter]: Reachable states at location L34 satisfy 236#(and (= |#NULL.base| 0) (<= |#NULL.base| 0) (<= 0 main_~flag~0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= 0 main_~i~1) (< main_~i~1 100000) (<= |main_~#a~0.offset| 0) (= main_~flag~0 0) (<= main_~flag~0 0) (= main_~i~1 0) (= (select (select |#memory_$Pointer$.base| |main_~#a~0.base|) (+ (* main_~i~1 4) |main_~#a~0.offset|)) |main_#t~mem5.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~i~1 0) (= (select (select |#memory_$Pointer$.offset| |main_~#a~0.base|) (+ (* main_~i~1 4) |main_~#a~0.offset|)) |main_#t~mem5.offset|) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:37:09,791 INFO L193 IcfgInterpreter]: Reachable states at location L4 satisfy 402#(and (exists ((v_prenex_6 Int) (v_prenex_5 Int) (|v_main_~#a~0.base_BEFORE_CALL_3| Int)) (or (and (= |#NULL.base| 0) (not (= (select (select |#memory_$Pointer$.offset| v_prenex_5) 0) 0)) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (= 0 (select (select |#memory_$Pointer$.base| |v_main_~#a~0.base_BEFORE_CALL_3|) 0))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= (select (select |#memory_$Pointer$.offset| v_prenex_6) 0) 0) (= |#NULL.offset| 0) (= 0 (select (select |#memory_$Pointer$.base| v_prenex_6) 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:37:09,791 INFO L193 IcfgInterpreter]: Reachable states at location L4-1 satisfy 407#(and (<= __VERIFIER_assert_~cond 0) (exists ((v_prenex_6 Int) (v_prenex_5 Int) (|v_main_~#a~0.base_BEFORE_CALL_3| Int)) (or (and (= |#NULL.base| 0) (not (= (select (select |#memory_$Pointer$.offset| v_prenex_5) 0) 0)) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (= 0 (select (select |#memory_$Pointer$.base| |v_main_~#a~0.base_BEFORE_CALL_3|) 0))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= (select (select |#memory_$Pointer$.offset| v_prenex_6) 0) 0) (= |#NULL.offset| 0) (= 0 (select (select |#memory_$Pointer$.base| v_prenex_6) 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)) [2019-10-13 21:37:09,792 INFO L193 IcfgInterpreter]: Reachable states at location L12-3 satisfy 460#true [2019-10-13 21:37:09,792 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 21:37:09,792 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2019-10-13 21:37:09,792 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 421#(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 21:37:09,793 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 412#(and (<= __VERIFIER_assert_~cond 0) (exists ((v_prenex_6 Int) (v_prenex_5 Int) (|v_main_~#a~0.base_BEFORE_CALL_3| Int)) (or (and (= |#NULL.base| 0) (not (= (select (select |#memory_$Pointer$.offset| v_prenex_5) 0) 0)) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (= 0 (select (select |#memory_$Pointer$.base| |v_main_~#a~0.base_BEFORE_CALL_3|) 0))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= (select (select |#memory_$Pointer$.offset| v_prenex_6) 0) 0) (= |#NULL.offset| 0) (= 0 (select (select |#memory_$Pointer$.base| v_prenex_6) 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)) [2019-10-13 21:37:09,793 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:37:09,794 INFO L193 IcfgInterpreter]: Reachable states at location L31-3 satisfy 345#(and (and (= |#NULL.base| 0) (= main_~i~1 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (<= main_~i~1 0) (<= |#NULL.base| 0) (<= 0 main_~flag~0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= 0 main_~i~1) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:37:09,794 INFO L193 IcfgInterpreter]: Reachable states at location initEXIT satisfy 465#(not (< init_~i~0 init_~size)) [2019-10-13 21:37:09,794 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 397#(exists ((v_prenex_6 Int) (v_prenex_5 Int) (|v_main_~#a~0.base_BEFORE_CALL_3| Int)) (or (and (= |#NULL.base| 0) (not (= (select (select |#memory_$Pointer$.offset| v_prenex_5) 0) 0)) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (= 0 (select (select |#memory_$Pointer$.base| |v_main_~#a~0.base_BEFORE_CALL_3|) 0))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= (select (select |#memory_$Pointer$.offset| v_prenex_6) 0) 0) (= |#NULL.offset| 0) (= 0 (select (select |#memory_$Pointer$.base| v_prenex_6) 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-13 21:37:09,795 INFO L193 IcfgInterpreter]: Reachable states at location L24-3 satisfy 392#(and (or (and (< |main_~#a~0.base| |#StackHeapBarrier|) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 main_~flag~0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= 0 main_~i~1) (<= |main_~#a~0.offset| 0) (not (= 0 |main_~#a~0.base|)) (= main_~flag~0 0) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (<= main_~flag~0 0) (= main_~i~1 0) (= 0 (select |old(#valid)| 0)) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (= |#NULL.base| 0) (<= |#NULL.base| 0) (<= 0 main_~flag~0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= 0 main_~i~1) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:37:10,613 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 21:37:10,613 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 15] total 24 [2019-10-13 21:37:10,614 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879824870] [2019-10-13 21:37:10,615 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-10-13 21:37:10,616 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:37:10,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-10-13 21:37:10,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=473, Unknown=0, NotChecked=0, Total=552 [2019-10-13 21:37:10,617 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 24 states. [2019-10-13 21:37:11,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:37:11,849 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2019-10-13 21:37:11,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-10-13 21:37:11,849 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 19 [2019-10-13 21:37:11,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:37:11,850 INFO L225 Difference]: With dead ends: 54 [2019-10-13 21:37:11,851 INFO L226 Difference]: Without dead ends: 38 [2019-10-13 21:37:11,852 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=221, Invalid=1419, Unknown=0, NotChecked=0, Total=1640 [2019-10-13 21:37:11,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-10-13 21:37:11,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2019-10-13 21:37:11,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-10-13 21:37:11,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2019-10-13 21:37:11,859 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 19 [2019-10-13 21:37:11,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:37:11,860 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2019-10-13 21:37:11,860 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-10-13 21:37:11,860 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2019-10-13 21:37:11,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-13 21:37:11,861 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:37:11,861 INFO L380 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:37:12,067 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:37:12,067 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:37:12,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:37:12,068 INFO L82 PathProgramCache]: Analyzing trace with hash -2061420768, now seen corresponding path program 2 times [2019-10-13 21:37:12,069 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:37:12,069 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748633236] [2019-10-13 21:37:12,069 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:37:12,070 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:37:12,070 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:37:12,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:37:12,181 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 21:37:12,181 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748633236] [2019-10-13 21:37:12,181 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851094574] [2019-10-13 21:37:12,182 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 21:37:12,247 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-13 21:37:12,248 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:37:12,250 INFO L256 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:37:12,252 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:37:12,271 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 21:37:12,271 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:37:12,297 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 21:37:12,298 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [941421523] [2019-10-13 21:37:12,299 INFO L162 IcfgInterpreter]: Started Sifa with 18 locations of interest [2019-10-13 21:37:12,300 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:37:12,300 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:37:12,300 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:37:12,301 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:37:12,329 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 24 for LOIs [2019-10-13 21:37:13,173 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 37 for LOIs [2019-10-13 21:37:13,181 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:37:13,184 INFO L199 IcfgInterpreter]: Interpreting procedure init with input of size 40 for LOIs [2019-10-13 21:37:13,318 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:37:13,318 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:37:13,319 INFO L193 IcfgInterpreter]: Reachable states at location L23-1 satisfy 85#(and (< |main_~#a~0.base| |#StackHeapBarrier|) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 main_~flag~0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (not (= 0 |main_~#a~0.base|)) (= main_~flag~0 0) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (<= main_~flag~0 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:37:13,319 INFO L193 IcfgInterpreter]: Reachable states at location initENTRY satisfy 419#(and (<= 100000 |init_#in~size|) (= 0 |#NULL.base|) (= (select |old(#length)| |init_#in~a.base|) 400000) (<= |#NULL.base| 0) (= 0 |init_#in~a.offset|) (not (= 0 |init_#in~a.base|)) (<= |init_#in~a.offset| 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (<= 0 |init_#in~a.offset|) (< |init_#in~a.base| |#StackHeapBarrier|) (= |#valid| |old(#valid)|) (= 1 (select |old(#valid)| |init_#in~a.base|)) (<= |init_#in~size| 100000) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |init_#in~size| 100000) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2019-10-13 21:37:13,319 INFO L193 IcfgInterpreter]: Reachable states at location L33 satisfy 287#(and (= |#NULL.base| 0) (<= |#NULL.base| 0) (<= 0 main_~flag~0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= 0 main_~i~1) (< main_~i~1 100000) (<= |main_~#a~0.offset| 0) (= main_~i~1 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~flag~0 1) (<= main_~i~1 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:37:13,319 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 410#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:37:13,320 INFO L193 IcfgInterpreter]: Reachable states at location L23 satisfy 38#(and (< |main_~#a~0.base| |#StackHeapBarrier|) (= |#length| (store |old(#length)| |main_~#a~0.base| 400000)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 main_~flag~0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (not (= 0 |main_~#a~0.base|)) (= main_~flag~0 0) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (<= main_~flag~0 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= |#valid| (store |old(#valid)| |main_~#a~0.base| 1)) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2019-10-13 21:37:13,320 INFO L193 IcfgInterpreter]: Reachable states at location L34 satisfy 230#(and (= |#NULL.base| 0) (<= |#NULL.base| 0) (<= 0 main_~flag~0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= 0 main_~i~1) (< main_~i~1 100000) (<= |main_~#a~0.offset| 0) (= main_~flag~0 0) (<= main_~flag~0 0) (= main_~i~1 0) (= (select (select |#memory_$Pointer$.base| |main_~#a~0.base|) (+ (* main_~i~1 4) |main_~#a~0.offset|)) |main_#t~mem5.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~flag~0 1) (<= main_~i~1 0) (= (select (select |#memory_$Pointer$.offset| |main_~#a~0.base|) (+ (* main_~i~1 4) |main_~#a~0.offset|)) |main_#t~mem5.offset|) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:37:13,320 INFO L193 IcfgInterpreter]: Reachable states at location L4 satisfy 396#(and (exists ((v_prenex_12 Int) (v_prenex_11 Int) (|v_main_~#a~0.base_BEFORE_CALL_7| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (not (= 0 (select (select |#memory_$Pointer$.offset| |v_main_~#a~0.base_BEFORE_CALL_7|) 0))) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (= 0 (select (select |#memory_$Pointer$.offset| v_prenex_12) 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= (select (select |#memory_$Pointer$.base| v_prenex_12) 0) 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (not (= (select (select |#memory_$Pointer$.base| v_prenex_11) 0) 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:37:13,321 INFO L193 IcfgInterpreter]: Reachable states at location L4-1 satisfy 401#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_prenex_12 Int) (v_prenex_11 Int) (|v_main_~#a~0.base_BEFORE_CALL_7| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (not (= 0 (select (select |#memory_$Pointer$.offset| |v_main_~#a~0.base_BEFORE_CALL_7|) 0))) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (= 0 (select (select |#memory_$Pointer$.offset| v_prenex_12) 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= (select (select |#memory_$Pointer$.base| v_prenex_12) 0) 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (not (= (select (select |#memory_$Pointer$.base| v_prenex_11) 0) 0)) (<= 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 21:37:13,321 INFO L193 IcfgInterpreter]: Reachable states at location L12-3 satisfy 454#true [2019-10-13 21:37:13,321 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 21:37:13,321 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2019-10-13 21:37:13,322 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 415#(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 21:37:13,322 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 406#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_prenex_12 Int) (v_prenex_11 Int) (|v_main_~#a~0.base_BEFORE_CALL_7| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (not (= 0 (select (select |#memory_$Pointer$.offset| |v_main_~#a~0.base_BEFORE_CALL_7|) 0))) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (= 0 (select (select |#memory_$Pointer$.offset| v_prenex_12) 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= (select (select |#memory_$Pointer$.base| v_prenex_12) 0) 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (not (= (select (select |#memory_$Pointer$.base| v_prenex_11) 0) 0)) (<= 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 21:37:13,322 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:37:13,322 INFO L193 IcfgInterpreter]: Reachable states at location L31-3 satisfy 339#(and (= |#NULL.base| 0) (<= |#NULL.base| 0) (<= 0 main_~flag~0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= 0 main_~i~1) (<= |main_~#a~0.offset| 0) (= main_~i~1 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~flag~0 1) (<= main_~i~1 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:37:13,323 INFO L193 IcfgInterpreter]: Reachable states at location initEXIT satisfy 459#(not (< init_~i~0 init_~size)) [2019-10-13 21:37:13,323 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 391#(exists ((v_prenex_12 Int) (v_prenex_11 Int) (|v_main_~#a~0.base_BEFORE_CALL_7| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (not (= 0 (select (select |#memory_$Pointer$.offset| |v_main_~#a~0.base_BEFORE_CALL_7|) 0))) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (= 0 (select (select |#memory_$Pointer$.offset| v_prenex_12) 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= (select (select |#memory_$Pointer$.base| v_prenex_12) 0) 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (not (= (select (select |#memory_$Pointer$.base| v_prenex_11) 0) 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-13 21:37:13,323 INFO L193 IcfgInterpreter]: Reachable states at location L24-3 satisfy 386#(and (or (and (= |#NULL.base| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (= 0 |#NULL.base|) (not (= 0 |main_~#a~0.base|)) (= main_~flag~0 0) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (<= main_~flag~0 0) (= main_~i~1 0) (= 0 (select |old(#valid)| 0)) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0))) (<= |#NULL.base| 0) (<= 0 main_~flag~0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= 0 main_~i~1) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~flag~0 1)) [2019-10-13 21:37:14,126 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 21:37:14,126 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4, 15] total 26 [2019-10-13 21:37:14,126 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158016115] [2019-10-13 21:37:14,127 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-10-13 21:37:14,127 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:37:14,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-10-13 21:37:14,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=563, Unknown=0, NotChecked=0, Total=650 [2019-10-13 21:37:14,128 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 26 states. [2019-10-13 21:37:15,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:37:15,817 INFO L93 Difference]: Finished difference Result 68 states and 82 transitions. [2019-10-13 21:37:15,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-10-13 21:37:15,819 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 22 [2019-10-13 21:37:15,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:37:15,820 INFO L225 Difference]: With dead ends: 68 [2019-10-13 21:37:15,820 INFO L226 Difference]: Without dead ends: 53 [2019-10-13 21:37:15,822 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=266, Invalid=1804, Unknown=0, NotChecked=0, Total=2070 [2019-10-13 21:37:15,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-10-13 21:37:15,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 31. [2019-10-13 21:37:15,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-10-13 21:37:15,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2019-10-13 21:37:15,837 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 22 [2019-10-13 21:37:15,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:37:15,843 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2019-10-13 21:37:15,843 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-10-13 21:37:15,843 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2019-10-13 21:37:15,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-10-13 21:37:15,844 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:37:15,844 INFO L380 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:37:16,049 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:37:16,050 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:37:16,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:37:16,051 INFO L82 PathProgramCache]: Analyzing trace with hash -631379323, now seen corresponding path program 3 times [2019-10-13 21:37:16,051 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:37:16,052 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439066699] [2019-10-13 21:37:16,052 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:37:16,052 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:37:16,052 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:37:16,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:37:16,145 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 21:37:16,145 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439066699] [2019-10-13 21:37:16,146 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048364747] [2019-10-13 21:37:16,146 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 21:37:16,244 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-13 21:37:16,244 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:37:16,245 INFO L256 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-13 21:37:16,248 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:37:16,337 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 21:37:16,337 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:37:16,496 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 21:37:16,496 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [249743825] [2019-10-13 21:37:16,498 INFO L162 IcfgInterpreter]: Started Sifa with 18 locations of interest [2019-10-13 21:37:16,499 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:37:16,499 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:37:16,499 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:37:16,500 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:37:16,528 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 24 for LOIs [2019-10-13 21:37:17,278 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 37 for LOIs [2019-10-13 21:37:17,285 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:37:17,288 INFO L199 IcfgInterpreter]: Interpreting procedure init with input of size 40 for LOIs [2019-10-13 21:37:17,387 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:37:17,387 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:37:17,387 INFO L193 IcfgInterpreter]: Reachable states at location L23-1 satisfy 85#(and (< |main_~#a~0.base| |#StackHeapBarrier|) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 main_~flag~0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (= main_~flag~0 0) (<= main_~flag~0 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:37:17,387 INFO L193 IcfgInterpreter]: Reachable states at location initENTRY satisfy 419#(and (<= 100000 |init_#in~size|) (= 0 |#NULL.base|) (= (select |old(#length)| |init_#in~a.base|) 400000) (<= |#NULL.base| 0) (= 0 |init_#in~a.offset|) (not (= 0 |init_#in~a.base|)) (<= |init_#in~a.offset| 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (<= 0 |init_#in~a.offset|) (< |init_#in~a.base| |#StackHeapBarrier|) (= |#valid| |old(#valid)|) (= 1 (select |old(#valid)| |init_#in~a.base|)) (<= |init_#in~size| 100000) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |init_#in~size| 100000) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2019-10-13 21:37:17,388 INFO L193 IcfgInterpreter]: Reachable states at location L33 satisfy 287#(and (= |#NULL.base| 0) (<= |#NULL.base| 0) (<= 0 main_~flag~0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= 0 main_~i~1) (< main_~i~1 100000) (<= |main_~#a~0.offset| 0) (= main_~i~1 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~flag~0 1) (<= main_~i~1 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:37:17,388 INFO L193 IcfgInterpreter]: Reachable states at location L23 satisfy 38#(and (< |main_~#a~0.base| |#StackHeapBarrier|) (= |#length| (store |old(#length)| |main_~#a~0.base| 400000)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 main_~flag~0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (= main_~flag~0 0) (<= main_~flag~0 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= |#valid| (store |old(#valid)| |main_~#a~0.base| 1)) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2019-10-13 21:37:17,388 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 410#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:37:17,388 INFO L193 IcfgInterpreter]: Reachable states at location L34 satisfy 230#(and (= |#NULL.base| 0) (<= |#NULL.base| 0) (<= 0 main_~flag~0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= 0 main_~i~1) (< main_~i~1 100000) (<= |main_~#a~0.offset| 0) (= main_~flag~0 0) (<= main_~flag~0 0) (= main_~i~1 0) (= (select (select |#memory_$Pointer$.base| |main_~#a~0.base|) (+ (* main_~i~1 4) |main_~#a~0.offset|)) |main_#t~mem5.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~flag~0 1) (<= main_~i~1 0) (= (select (select |#memory_$Pointer$.offset| |main_~#a~0.base|) (+ (* main_~i~1 4) |main_~#a~0.offset|)) |main_#t~mem5.offset|) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:37:17,388 INFO L193 IcfgInterpreter]: Reachable states at location L4 satisfy 396#(and (exists ((v_prenex_18 Int) (v_prenex_17 Int) (|v_main_~#a~0.base_BEFORE_CALL_11| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (not (= (select (select |#memory_$Pointer$.offset| |v_main_~#a~0.base_BEFORE_CALL_11|) 0) 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (= (select (select |#memory_$Pointer$.offset| v_prenex_18) 0) 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (= (select (select |#memory_$Pointer$.base| v_prenex_18) 0) 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (not (= (select (select |#memory_$Pointer$.base| v_prenex_17) 0) 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:37:17,389 INFO L193 IcfgInterpreter]: Reachable states at location L4-1 satisfy 401#(and (exists ((v_prenex_18 Int) (v_prenex_17 Int) (|v_main_~#a~0.base_BEFORE_CALL_11| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (not (= (select (select |#memory_$Pointer$.offset| |v_main_~#a~0.base_BEFORE_CALL_11|) 0) 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (= (select (select |#memory_$Pointer$.offset| v_prenex_18) 0) 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (= (select (select |#memory_$Pointer$.base| v_prenex_18) 0) 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (not (= (select (select |#memory_$Pointer$.base| v_prenex_17) 0) 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 21:37:17,389 INFO L193 IcfgInterpreter]: Reachable states at location L12-3 satisfy 454#true [2019-10-13 21:37:17,389 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 21:37:17,389 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2019-10-13 21:37:17,389 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 415#(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 21:37:17,390 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 406#(and (exists ((v_prenex_18 Int) (v_prenex_17 Int) (|v_main_~#a~0.base_BEFORE_CALL_11| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (not (= (select (select |#memory_$Pointer$.offset| |v_main_~#a~0.base_BEFORE_CALL_11|) 0) 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (= (select (select |#memory_$Pointer$.offset| v_prenex_18) 0) 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (= (select (select |#memory_$Pointer$.base| v_prenex_18) 0) 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (not (= (select (select |#memory_$Pointer$.base| v_prenex_17) 0) 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 21:37:17,390 INFO L193 IcfgInterpreter]: Reachable states at location L31-3 satisfy 339#(and (= |#NULL.base| 0) (<= |#NULL.base| 0) (<= 0 main_~flag~0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= 0 main_~i~1) (<= |main_~#a~0.offset| 0) (= main_~i~1 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~flag~0 1) (<= main_~i~1 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:37:17,390 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:37:17,390 INFO L193 IcfgInterpreter]: Reachable states at location initEXIT satisfy 459#(not (< init_~i~0 init_~size)) [2019-10-13 21:37:17,391 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 391#(exists ((v_prenex_18 Int) (v_prenex_17 Int) (|v_main_~#a~0.base_BEFORE_CALL_11| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (not (= (select (select |#memory_$Pointer$.offset| |v_main_~#a~0.base_BEFORE_CALL_11|) 0) 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (= (select (select |#memory_$Pointer$.offset| v_prenex_18) 0) 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (= (select (select |#memory_$Pointer$.base| v_prenex_18) 0) 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (not (= (select (select |#memory_$Pointer$.base| v_prenex_17) 0) 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-13 21:37:17,391 INFO L193 IcfgInterpreter]: Reachable states at location L24-3 satisfy 386#(and (or (and (= |#NULL.base| 0) (<= |#NULL.base| 0) (<= 0 main_~flag~0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= 0 main_~i~1) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 main_~flag~0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= 0 main_~i~1) (<= |main_~#a~0.offset| 0) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (= main_~flag~0 0) (<= main_~flag~0 0) (= main_~i~1 0) (= 0 (select |old(#valid)| 0)) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~flag~0 1)) [2019-10-13 21:37:18,132 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 21:37:18,133 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 15] total 36 [2019-10-13 21:37:18,133 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939168484] [2019-10-13 21:37:18,134 INFO L442 AbstractCegarLoop]: Interpolant automaton has 36 states [2019-10-13 21:37:18,134 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:37:18,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2019-10-13 21:37:18,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=1021, Unknown=0, NotChecked=0, Total=1260 [2019-10-13 21:37:18,136 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 36 states. [2019-10-13 21:37:20,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:37:20,010 INFO L93 Difference]: Finished difference Result 68 states and 81 transitions. [2019-10-13 21:37:20,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-10-13 21:37:20,011 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 26 [2019-10-13 21:37:20,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:37:20,013 INFO L225 Difference]: With dead ends: 68 [2019-10-13 21:37:20,013 INFO L226 Difference]: Without dead ends: 49 [2019-10-13 21:37:20,016 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1218 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=567, Invalid=3093, Unknown=0, NotChecked=0, Total=3660 [2019-10-13 21:37:20,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-10-13 21:37:20,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 38. [2019-10-13 21:37:20,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-10-13 21:37:20,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2019-10-13 21:37:20,031 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 26 [2019-10-13 21:37:20,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:37:20,032 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2019-10-13 21:37:20,032 INFO L463 AbstractCegarLoop]: Interpolant automaton has 36 states. [2019-10-13 21:37:20,032 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2019-10-13 21:37:20,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-10-13 21:37:20,033 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:37:20,034 INFO L380 BasicCegarLoop]: trace histogram [12, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:37:20,239 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:37:20,241 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:37:20,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:37:20,241 INFO L82 PathProgramCache]: Analyzing trace with hash -225187482, now seen corresponding path program 4 times [2019-10-13 21:37:20,241 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:37:20,241 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543957789] [2019-10-13 21:37:20,241 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:37:20,241 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:37:20,242 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:37:20,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:37:20,488 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 21:37:20,489 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543957789] [2019-10-13 21:37:20,489 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724840349] [2019-10-13 21:37:20,489 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 21:37:20,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:37:20,623 INFO L256 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 16 conjunts are in the unsatisfiable core [2019-10-13 21:37:20,635 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:37:20,816 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 21:37:20,817 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:37:21,280 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 21:37:21,280 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1114786224] [2019-10-13 21:37:21,282 INFO L162 IcfgInterpreter]: Started Sifa with 18 locations of interest [2019-10-13 21:37:21,282 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:37:21,283 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:37:21,283 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:37:21,283 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:37:21,299 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 24 for LOIs [2019-10-13 21:37:22,093 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 37 for LOIs [2019-10-13 21:37:22,101 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:37:22,104 INFO L199 IcfgInterpreter]: Interpreting procedure init with input of size 40 for LOIs [2019-10-13 21:37:22,231 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:37:22,231 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:37:22,231 INFO L193 IcfgInterpreter]: Reachable states at location L23-1 satisfy 85#(and (< |main_~#a~0.base| |#StackHeapBarrier|) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 main_~flag~0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (= main_~flag~0 0) (<= main_~flag~0 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:37:22,232 INFO L193 IcfgInterpreter]: Reachable states at location initENTRY satisfy 419#(and (<= 100000 |init_#in~size|) (= 0 |#NULL.base|) (= (select |old(#length)| |init_#in~a.base|) 400000) (<= |#NULL.base| 0) (= 0 |init_#in~a.offset|) (not (= 0 |init_#in~a.base|)) (<= |init_#in~a.offset| 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (<= 0 |init_#in~a.offset|) (< |init_#in~a.base| |#StackHeapBarrier|) (= |#valid| |old(#valid)|) (= 1 (select |old(#valid)| |init_#in~a.base|)) (<= |init_#in~size| 100000) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |init_#in~size| 100000) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2019-10-13 21:37:22,232 INFO L193 IcfgInterpreter]: Reachable states at location L33 satisfy 287#(and (= |#NULL.base| 0) (<= |#NULL.base| 0) (<= 0 main_~flag~0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= 0 main_~i~1) (< main_~i~1 100000) (<= |main_~#a~0.offset| 0) (= main_~i~1 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~flag~0 1) (<= main_~i~1 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:37:22,232 INFO L193 IcfgInterpreter]: Reachable states at location L23 satisfy 38#(and (< |main_~#a~0.base| |#StackHeapBarrier|) (= |#length| (store |old(#length)| |main_~#a~0.base| 400000)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 main_~flag~0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (= main_~flag~0 0) (<= main_~flag~0 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= |#valid| (store |old(#valid)| |main_~#a~0.base| 1)) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2019-10-13 21:37:22,233 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 410#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:37:22,233 INFO L193 IcfgInterpreter]: Reachable states at location L34 satisfy 230#(and (= |#NULL.base| 0) (<= |#NULL.base| 0) (<= 0 main_~flag~0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= 0 main_~i~1) (< main_~i~1 100000) (<= |main_~#a~0.offset| 0) (= main_~flag~0 0) (<= main_~flag~0 0) (= main_~i~1 0) (= (select (select |#memory_$Pointer$.base| |main_~#a~0.base|) (+ (* main_~i~1 4) |main_~#a~0.offset|)) |main_#t~mem5.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~flag~0 1) (<= main_~i~1 0) (= (select (select |#memory_$Pointer$.offset| |main_~#a~0.base|) (+ (* main_~i~1 4) |main_~#a~0.offset|)) |main_#t~mem5.offset|) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:37:22,233 INFO L193 IcfgInterpreter]: Reachable states at location L4 satisfy 396#(and (exists ((v_prenex_23 Int) (v_prenex_24 Int) (|v_main_~#a~0.base_BEFORE_CALL_15| Int)) (or (and (= |#NULL.base| 0) (not (= 0 (select (select |#memory_$Pointer$.base| v_prenex_24) 0))) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (not (= (select (select |#memory_$Pointer$.offset| v_prenex_23) 0) 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= 0 (select (select |#memory_$Pointer$.base| |v_main_~#a~0.base_BEFORE_CALL_15|) 0)) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (= (select (select |#memory_$Pointer$.offset| |v_main_~#a~0.base_BEFORE_CALL_15|) 0) 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:37:22,234 INFO L193 IcfgInterpreter]: Reachable states at location L4-1 satisfy 401#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_prenex_23 Int) (v_prenex_24 Int) (|v_main_~#a~0.base_BEFORE_CALL_15| Int)) (or (and (= |#NULL.base| 0) (not (= 0 (select (select |#memory_$Pointer$.base| v_prenex_24) 0))) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (not (= (select (select |#memory_$Pointer$.offset| v_prenex_23) 0) 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= 0 (select (select |#memory_$Pointer$.base| |v_main_~#a~0.base_BEFORE_CALL_15|) 0)) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (= (select (select |#memory_$Pointer$.offset| |v_main_~#a~0.base_BEFORE_CALL_15|) 0) 0) (<= 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 21:37:22,234 INFO L193 IcfgInterpreter]: Reachable states at location L12-3 satisfy 454#true [2019-10-13 21:37:22,234 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 21:37:22,238 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2019-10-13 21:37:22,239 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 415#(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 21:37:22,239 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 406#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_prenex_23 Int) (v_prenex_24 Int) (|v_main_~#a~0.base_BEFORE_CALL_15| Int)) (or (and (= |#NULL.base| 0) (not (= 0 (select (select |#memory_$Pointer$.base| v_prenex_24) 0))) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (not (= (select (select |#memory_$Pointer$.offset| v_prenex_23) 0) 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= 0 (select (select |#memory_$Pointer$.base| |v_main_~#a~0.base_BEFORE_CALL_15|) 0)) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (= (select (select |#memory_$Pointer$.offset| |v_main_~#a~0.base_BEFORE_CALL_15|) 0) 0) (<= 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 21:37:22,239 INFO L193 IcfgInterpreter]: Reachable states at location L31-3 satisfy 339#(and (= |#NULL.base| 0) (<= |#NULL.base| 0) (<= 0 main_~flag~0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= 0 main_~i~1) (<= |main_~#a~0.offset| 0) (= main_~i~1 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~flag~0 1) (<= main_~i~1 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) [2019-10-13 21:37:22,240 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:37:22,240 INFO L193 IcfgInterpreter]: Reachable states at location initEXIT satisfy 459#(not (< init_~i~0 init_~size)) [2019-10-13 21:37:22,240 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 391#(exists ((v_prenex_23 Int) (v_prenex_24 Int) (|v_main_~#a~0.base_BEFORE_CALL_15| Int)) (or (and (= |#NULL.base| 0) (not (= 0 (select (select |#memory_$Pointer$.base| v_prenex_24) 0))) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (not (= (select (select |#memory_$Pointer$.offset| v_prenex_23) 0) 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= 0 (select (select |#memory_$Pointer$.base| |v_main_~#a~0.base_BEFORE_CALL_15|) 0)) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (= (select (select |#memory_$Pointer$.offset| |v_main_~#a~0.base_BEFORE_CALL_15|) 0) 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-13 21:37:22,241 INFO L193 IcfgInterpreter]: Reachable states at location L24-3 satisfy 386#(and (or (and (= |#NULL.base| 0) (<= |#NULL.base| 0) (<= 0 main_~flag~0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= 0 main_~i~1) (<= |main_~#a~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 main_~flag~0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= 0 main_~i~1) (<= |main_~#a~0.offset| 0) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (= main_~flag~0 0) (<= main_~flag~0 0) (= main_~i~1 0) (= 0 (select |old(#valid)| 0)) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~flag~0 1)) [2019-10-13 21:37:23,230 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 21:37:23,230 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16, 15] total 57 [2019-10-13 21:37:23,230 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917185383] [2019-10-13 21:37:23,232 INFO L442 AbstractCegarLoop]: Interpolant automaton has 57 states [2019-10-13 21:37:23,232 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:37:23,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2019-10-13 21:37:23,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=827, Invalid=2365, Unknown=0, NotChecked=0, Total=3192 [2019-10-13 21:37:23,235 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 57 states. [2019-10-13 21:37:25,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:37:25,923 INFO L93 Difference]: Finished difference Result 82 states and 102 transitions. [2019-10-13 21:37:25,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-10-13 21:37:25,924 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 33 [2019-10-13 21:37:25,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:37:25,925 INFO L225 Difference]: With dead ends: 82 [2019-10-13 21:37:25,925 INFO L226 Difference]: Without dead ends: 63 [2019-10-13 21:37:25,928 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 58 SyntacticMatches, 2 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3227 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1827, Invalid=7293, Unknown=0, NotChecked=0, Total=9120 [2019-10-13 21:37:25,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-10-13 21:37:25,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 52. [2019-10-13 21:37:25,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-10-13 21:37:25,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2019-10-13 21:37:25,938 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 33 [2019-10-13 21:37:25,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:37:25,938 INFO L462 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2019-10-13 21:37:25,938 INFO L463 AbstractCegarLoop]: Interpolant automaton has 57 states. [2019-10-13 21:37:25,938 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2019-10-13 21:37:25,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-13 21:37:25,939 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:37:25,940 INFO L380 BasicCegarLoop]: trace histogram [26, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:37:26,141 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:37:26,142 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:37:26,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:37:26,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1595507578, now seen corresponding path program 5 times [2019-10-13 21:37:26,143 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:37:26,144 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306763436] [2019-10-13 21:37:26,144 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:37:26,144 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:37:26,145 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:37:26,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:37:26,907 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 21:37:26,907 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306763436] [2019-10-13 21:37:26,908 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811184557] [2019-10-13 21:37:26,908 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 [2019-10-13 21:37:27,076 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-13 21:37:27,076 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:37:27,077 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 23 conjunts are in the unsatisfiable core [2019-10-13 21:37:27,087 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:37:27,459 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2019-10-13 21:37:27,459 INFO L321 TraceCheckSpWp]: Computing backward predicates...