java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/array-examples/standard_partition_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:35:45,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:35:45,003 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:35:45,016 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:35:45,016 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:35:45,018 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:35:45,019 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:35:45,022 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:35:45,023 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:35:45,024 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:35:45,025 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:35:45,027 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:35:45,027 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:35:45,028 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:35:45,029 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:35:45,030 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:35:45,031 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:35:45,032 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:35:45,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:35:45,036 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:35:45,038 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:35:45,039 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:35:45,040 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:35:45,041 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:35:45,044 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 21:35:45,052 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:35:45,053 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:35:45,054 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:35:45,055 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 21:35:45,083 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:35:45,083 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:35:45,085 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:35:45,086 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:35:45,086 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:35:45,087 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:35:45,087 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:35:45,087 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:35:45,088 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:35:45,088 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:35:45,089 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:35:45,089 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:35:45,089 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:35:45,090 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:35:45,090 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:35:45,090 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:35:45,091 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:35:45,091 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:35:45,091 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:35:45,091 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:35:45,092 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:35:45,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:35:45,092 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:35:45,093 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:35:45,093 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:35:45,093 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:35:45,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:35:45,094 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:35:45,094 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 21:35:45,394 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:35:45,408 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:35:45,411 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:35:45,413 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:35:45,413 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:35:45,414 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_partition_ground-1.i [2019-10-13 21:35:45,478 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d31830c35/02ecf5291e4044719e9907b20595a985/FLAGa124a7563 [2019-10-13 21:35:45,924 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:35:45,924 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_partition_ground-1.i [2019-10-13 21:35:45,932 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d31830c35/02ecf5291e4044719e9907b20595a985/FLAGa124a7563 [2019-10-13 21:35:46,330 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d31830c35/02ecf5291e4044719e9907b20595a985 [2019-10-13 21:35:46,341 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:35:46,343 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:35:46,344 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:35:46,344 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:35:46,348 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:35:46,349 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:35:46" (1/1) ... [2019-10-13 21:35:46,352 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54268d74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:35:46, skipping insertion in model container [2019-10-13 21:35:46,352 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:35:46" (1/1) ... [2019-10-13 21:35:46,360 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:35:46,381 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:35:46,582 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:35:46,587 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:35:46,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:35:46,632 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:35:46,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:35:46 WrapperNode [2019-10-13 21:35:46,632 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:35:46,633 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:35:46,633 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:35:46,633 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:35:46,740 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:35:46" (1/1) ... [2019-10-13 21:35:46,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:35:46" (1/1) ... [2019-10-13 21:35:46,750 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:35:46" (1/1) ... [2019-10-13 21:35:46,752 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:35:46" (1/1) ... [2019-10-13 21:35:46,774 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:35:46" (1/1) ... [2019-10-13 21:35:46,780 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:35:46" (1/1) ... [2019-10-13 21:35:46,782 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:35:46" (1/1) ... [2019-10-13 21:35:46,784 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:35:46,785 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:35:46,785 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:35:46,785 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:35:46,786 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:35:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:35:46,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:35:46,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:35:46,848 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 21:35:46,848 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:35:46,849 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:35:46,849 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:35:46,849 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 21:35:46,849 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:35:46,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:35:46,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:35:46,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:35:46,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:35:46,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:35:46,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:35:47,346 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:35:47,346 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:35:47,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:35:47 BoogieIcfgContainer [2019-10-13 21:35:47,348 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:35:47,350 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:35:47,350 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:35:47,353 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:35:47,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:35:46" (1/3) ... [2019-10-13 21:35:47,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4343ea38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:35:47, skipping insertion in model container [2019-10-13 21:35:47,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:35:46" (2/3) ... [2019-10-13 21:35:47,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4343ea38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:35:47, skipping insertion in model container [2019-10-13 21:35:47,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:35:47" (3/3) ... [2019-10-13 21:35:47,358 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_partition_ground-1.i [2019-10-13 21:35:47,369 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:35:47,377 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:35:47,389 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:35:47,423 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:35:47,424 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:35:47,424 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:35:47,424 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:35:47,424 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:35:47,424 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:35:47,425 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:35:47,425 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:35:47,440 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-10-13 21:35:47,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-13 21:35:47,446 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:35:47,447 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:35:47,449 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:35:47,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:35:47,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1921227635, now seen corresponding path program 1 times [2019-10-13 21:35:47,463 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:35:47,463 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582521269] [2019-10-13 21:35:47,464 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:35:47,464 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:35:47,464 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:35:47,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:35:47,638 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 21:35:47,639 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582521269] [2019-10-13 21:35:47,640 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:35:47,641 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:35:47,641 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302372858] [2019-10-13 21:35:47,646 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:35:47,646 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:35:47,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:35:47,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:35:47,663 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 3 states. [2019-10-13 21:35:47,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:35:47,709 INFO L93 Difference]: Finished difference Result 40 states and 53 transitions. [2019-10-13 21:35:47,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:35:47,711 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2019-10-13 21:35:47,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:35:47,722 INFO L225 Difference]: With dead ends: 40 [2019-10-13 21:35:47,722 INFO L226 Difference]: Without dead ends: 21 [2019-10-13 21:35:47,726 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 21:35:47,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-10-13 21:35:47,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-10-13 21:35:47,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-10-13 21:35:47,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2019-10-13 21:35:47,782 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 12 [2019-10-13 21:35:47,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:35:47,783 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2019-10-13 21:35:47,783 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:35:47,783 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2019-10-13 21:35:47,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-13 21:35:47,784 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:35:47,785 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:35:47,785 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:35:47,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:35:47,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1598045320, now seen corresponding path program 1 times [2019-10-13 21:35:47,786 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:35:47,787 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643659] [2019-10-13 21:35:47,787 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:35:47,787 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:35:47,787 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:35:47,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:35:47,948 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 21:35:47,949 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643659] [2019-10-13 21:35:47,949 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183683523] [2019-10-13 21:35:47,950 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 21:35:48,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:35:48,029 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:35:48,037 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:35:48,074 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 21:35:48,075 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:35:48,102 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 21:35:48,102 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1987653178] [2019-10-13 21:35:48,130 INFO L162 IcfgInterpreter]: Started Sifa with 13 locations of interest [2019-10-13 21:35:48,130 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:35:48,137 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:35:48,147 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:35:48,148 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:35:48,347 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 21:35:48,832 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 21 for LOIs [2019-10-13 21:35:48,846 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:35:48,853 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:35:48,853 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:35:48,854 INFO L193 IcfgInterpreter]: Reachable states at location L3-1 satisfy 119#(and (<= __VERIFIER_assert_~cond 0) (exists ((|v_main_~#bb~0.base_BEFORE_CALL_1| Int) (v_prenex_8 Int) (|v_main_~#bb~0.offset_BEFORE_CALL_1| Int) (v_prenex_9 Int)) (or (and (not (<= 0 (select (select |#memory_int| |v_main_~#bb~0.base_BEFORE_CALL_1|) |v_main_~#bb~0.offset_BEFORE_CALL_1|))) (= |__VERIFIER_assert_#in~cond| 0)) (and (= |__VERIFIER_assert_#in~cond| 1) (<= 0 (select (select |#memory_int| v_prenex_8) v_prenex_9))))) (<= 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 21:35:48,854 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 128#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:35:48,854 INFO L193 IcfgInterpreter]: Reachable states at location L29-3 satisfy 99#(and (<= 100000 main_~a~0) (= main_~x~0 0) (<= 0 main_~a~0) (<= main_~x~0 0) (not (< main_~a~0 100000)) (<= 0 main_~x~0)) [2019-10-13 21:35:48,855 INFO L193 IcfgInterpreter]: Reachable states at location L3 satisfy 114#(and (exists ((|v_main_~#bb~0.base_BEFORE_CALL_1| Int) (v_prenex_8 Int) (|v_main_~#bb~0.offset_BEFORE_CALL_1| Int) (v_prenex_9 Int)) (or (and (not (<= 0 (select (select |#memory_int| |v_main_~#bb~0.base_BEFORE_CALL_1|) |v_main_~#bb~0.offset_BEFORE_CALL_1|))) (= |__VERIFIER_assert_#in~cond| 0)) (and (= |__VERIFIER_assert_#in~cond| 1) (<= 0 (select (select |#memory_int| v_prenex_8) v_prenex_9))))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:35:48,855 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 21:35:48,855 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:35:48,855 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 133#(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 21:35:48,856 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:35:48,856 INFO L193 IcfgInterpreter]: Reachable states at location L21-2 satisfy 94#(<= 0 main_~a~0) [2019-10-13 21:35:48,856 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 109#(exists ((|v_main_~#bb~0.base_BEFORE_CALL_1| Int) (v_prenex_8 Int) (|v_main_~#bb~0.offset_BEFORE_CALL_1| Int) (v_prenex_9 Int)) (or (and (not (<= 0 (select (select |#memory_int| |v_main_~#bb~0.base_BEFORE_CALL_1|) |v_main_~#bb~0.offset_BEFORE_CALL_1|))) (= |__VERIFIER_assert_#in~cond| 0)) (and (= |__VERIFIER_assert_#in~cond| 1) (<= 0 (select (select |#memory_int| v_prenex_8) v_prenex_9))))) [2019-10-13 21:35:48,856 INFO L193 IcfgInterpreter]: Reachable states at location L30 satisfy 104#(and (<= 100000 main_~a~0) (<= 0 main_~b~0) (= main_~x~0 0) (< main_~x~0 main_~b~0) (<= 0 main_~a~0) (= (select (select |#memory_int| |main_~#bb~0.base|) (+ (* main_~x~0 4) |main_~#bb~0.offset|)) |main_#t~mem6|) (<= main_~x~0 0) (not (< main_~a~0 100000)) (<= 0 main_~x~0)) [2019-10-13 21:35:48,857 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 124#(and (<= __VERIFIER_assert_~cond 0) (exists ((|v_main_~#bb~0.base_BEFORE_CALL_1| Int) (v_prenex_8 Int) (|v_main_~#bb~0.offset_BEFORE_CALL_1| Int) (v_prenex_9 Int)) (or (and (not (<= 0 (select (select |#memory_int| |v_main_~#bb~0.base_BEFORE_CALL_1|) |v_main_~#bb~0.offset_BEFORE_CALL_1|))) (= |__VERIFIER_assert_#in~cond| 0)) (and (= |__VERIFIER_assert_#in~cond| 1) (<= 0 (select (select |#memory_int| v_prenex_8) v_prenex_9))))) (<= 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 21:35:48,857 INFO L193 IcfgInterpreter]: Reachable states at location L12-2 satisfy 68#true [2019-10-13 21:35:49,163 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 21:35:49,163 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 11] total 17 [2019-10-13 21:35:49,164 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960041098] [2019-10-13 21:35:49,167 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-10-13 21:35:49,169 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:35:49,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-10-13 21:35:49,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2019-10-13 21:35:49,173 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 17 states. [2019-10-13 21:35:49,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:35:49,865 INFO L93 Difference]: Finished difference Result 53 states and 68 transitions. [2019-10-13 21:35:49,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 21:35:49,866 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2019-10-13 21:35:49,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:35:49,867 INFO L225 Difference]: With dead ends: 53 [2019-10-13 21:35:49,867 INFO L226 Difference]: Without dead ends: 39 [2019-10-13 21:35:49,869 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=142, Invalid=614, Unknown=0, NotChecked=0, Total=756 [2019-10-13 21:35:49,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-10-13 21:35:49,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2019-10-13 21:35:49,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-10-13 21:35:49,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2019-10-13 21:35:49,880 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 14 [2019-10-13 21:35:49,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:35:49,881 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2019-10-13 21:35:49,881 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-10-13 21:35:49,881 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2019-10-13 21:35:49,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-13 21:35:49,882 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:35:49,882 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:35:50,087 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:35:50,088 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:35:50,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:35:50,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1908337869, now seen corresponding path program 2 times [2019-10-13 21:35:50,090 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:35:50,090 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943525862] [2019-10-13 21:35:50,090 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:35:50,091 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:35:50,091 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:35:50,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:35:50,208 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 21:35:50,209 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943525862] [2019-10-13 21:35:50,210 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330636167] [2019-10-13 21:35:50,210 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 21:35:50,288 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-10-13 21:35:50,288 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:35:50,289 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:35:50,294 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:35:50,319 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 21:35:50,320 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:35:50,411 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 21:35:50,412 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1866021066] [2019-10-13 21:35:50,413 INFO L162 IcfgInterpreter]: Started Sifa with 13 locations of interest [2019-10-13 21:35:50,414 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:35:50,416 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:35:50,416 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:35:50,416 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:35:50,474 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 21:35:50,811 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 21 for LOIs [2019-10-13 21:35:50,821 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:35:50,826 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:35:50,826 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:35:50,826 INFO L193 IcfgInterpreter]: Reachable states at location L3-1 satisfy 119#(and (exists ((v_prenex_18 Int) (v_prenex_17 Int) (|v_main_~#bb~0.base_BEFORE_CALL_2| Int) (|v_main_~#bb~0.offset_BEFORE_CALL_2| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (<= 0 (select (select |#memory_int| |v_main_~#bb~0.base_BEFORE_CALL_2|) |v_main_~#bb~0.offset_BEFORE_CALL_2|))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (<= 0 (select (select |#memory_int| v_prenex_17) v_prenex_18)))))) (<= __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 21:35:50,827 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 128#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:35:50,827 INFO L193 IcfgInterpreter]: Reachable states at location L29-3 satisfy 99#(and (<= 100000 main_~a~0) (= main_~x~0 0) (<= 0 main_~a~0) (<= main_~x~0 0) (not (< main_~a~0 100000)) (<= 0 main_~x~0)) [2019-10-13 21:35:50,827 INFO L193 IcfgInterpreter]: Reachable states at location L3 satisfy 114#(and (exists ((v_prenex_18 Int) (v_prenex_17 Int) (|v_main_~#bb~0.base_BEFORE_CALL_2| Int) (|v_main_~#bb~0.offset_BEFORE_CALL_2| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (<= 0 (select (select |#memory_int| |v_main_~#bb~0.base_BEFORE_CALL_2|) |v_main_~#bb~0.offset_BEFORE_CALL_2|))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (<= 0 (select (select |#memory_int| v_prenex_17) v_prenex_18)))))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:35:50,827 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 21:35:50,828 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:35:50,828 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 133#(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 21:35:50,828 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:35:50,828 INFO L193 IcfgInterpreter]: Reachable states at location L21-2 satisfy 94#(<= 0 main_~a~0) [2019-10-13 21:35:50,829 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 109#(exists ((v_prenex_18 Int) (v_prenex_17 Int) (|v_main_~#bb~0.base_BEFORE_CALL_2| Int) (|v_main_~#bb~0.offset_BEFORE_CALL_2| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (<= 0 (select (select |#memory_int| |v_main_~#bb~0.base_BEFORE_CALL_2|) |v_main_~#bb~0.offset_BEFORE_CALL_2|))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (<= 0 (select (select |#memory_int| v_prenex_17) v_prenex_18)))))) [2019-10-13 21:35:50,829 INFO L193 IcfgInterpreter]: Reachable states at location L30 satisfy 104#(and (<= 100000 main_~a~0) (<= 0 main_~b~0) (= main_~x~0 0) (< main_~x~0 main_~b~0) (<= 0 main_~a~0) (= (select (select |#memory_int| |main_~#bb~0.base|) (+ (* main_~x~0 4) |main_~#bb~0.offset|)) |main_#t~mem6|) (<= main_~x~0 0) (not (< main_~a~0 100000)) (<= 0 main_~x~0)) [2019-10-13 21:35:50,829 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 124#(and (exists ((v_prenex_18 Int) (v_prenex_17 Int) (|v_main_~#bb~0.base_BEFORE_CALL_2| Int) (|v_main_~#bb~0.offset_BEFORE_CALL_2| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (<= 0 (select (select |#memory_int| |v_main_~#bb~0.base_BEFORE_CALL_2|) |v_main_~#bb~0.offset_BEFORE_CALL_2|))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (<= 0 (select (select |#memory_int| v_prenex_17) v_prenex_18)))))) (<= __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 21:35:50,829 INFO L193 IcfgInterpreter]: Reachable states at location L12-2 satisfy 68#true [2019-10-13 21:35:51,144 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 21:35:51,144 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 11] total 23 [2019-10-13 21:35:51,145 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842683467] [2019-10-13 21:35:51,146 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-10-13 21:35:51,146 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:35:51,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-10-13 21:35:51,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2019-10-13 21:35:51,147 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 23 states. [2019-10-13 21:35:51,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:35:51,977 INFO L93 Difference]: Finished difference Result 74 states and 97 transitions. [2019-10-13 21:35:51,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-13 21:35:51,978 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 20 [2019-10-13 21:35:51,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:35:51,980 INFO L225 Difference]: With dead ends: 74 [2019-10-13 21:35:51,980 INFO L226 Difference]: Without dead ends: 51 [2019-10-13 21:35:51,981 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=313, Invalid=1247, Unknown=0, NotChecked=0, Total=1560 [2019-10-13 21:35:51,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-10-13 21:35:51,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 45. [2019-10-13 21:35:51,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-10-13 21:35:51,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2019-10-13 21:35:51,993 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 20 [2019-10-13 21:35:51,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:35:51,994 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2019-10-13 21:35:51,994 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-10-13 21:35:51,994 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2019-10-13 21:35:51,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-13 21:35:51,995 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:35:51,995 INFO L380 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:35:52,198 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:35:52,199 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:35:52,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:35:52,200 INFO L82 PathProgramCache]: Analyzing trace with hash 854387411, now seen corresponding path program 3 times [2019-10-13 21:35:52,201 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:35:52,202 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364271037] [2019-10-13 21:35:52,202 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:35:52,203 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:35:52,203 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:35:52,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:35:52,583 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-13 21:35:52,584 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364271037] [2019-10-13 21:35:52,585 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967623425] [2019-10-13 21:35:52,585 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 21:35:52,649 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-13 21:35:52,649 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:35:52,651 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-13 21:35:52,654 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:35:52,676 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-13 21:35:52,676 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:35:52,878 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-13 21:35:52,878 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [787019458] [2019-10-13 21:35:52,880 INFO L162 IcfgInterpreter]: Started Sifa with 13 locations of interest [2019-10-13 21:35:52,880 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:35:52,880 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:35:52,881 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:35:52,881 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:35:52,927 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 21:35:53,353 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 21 for LOIs [2019-10-13 21:35:53,362 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:35:53,367 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:35:53,367 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:35:53,367 INFO L193 IcfgInterpreter]: Reachable states at location L3-1 satisfy 135#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_prenex_27 Int) (|v_main_~#bb~0.offset_BEFORE_CALL_3| Int) (v_prenex_26 Int) (|v_main_~#bb~0.base_BEFORE_CALL_3| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (<= 0 (select (select |#memory_int| |v_main_~#bb~0.base_BEFORE_CALL_3|) |v_main_~#bb~0.offset_BEFORE_CALL_3|))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (<= 0 (select (select |#memory_int| v_prenex_27) v_prenex_26)))))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:35:53,368 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 144#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:35:53,368 INFO L193 IcfgInterpreter]: Reachable states at location L29-3 satisfy 115#(and (<= 100000 main_~a~0) (= main_~x~0 0) (<= 0 main_~a~0) (<= main_~x~0 0) (not (< main_~a~0 100000)) (<= 0 main_~x~0)) [2019-10-13 21:35:53,368 INFO L193 IcfgInterpreter]: Reachable states at location L3 satisfy 130#(and (exists ((v_prenex_27 Int) (|v_main_~#bb~0.offset_BEFORE_CALL_3| Int) (v_prenex_26 Int) (|v_main_~#bb~0.base_BEFORE_CALL_3| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (<= 0 (select (select |#memory_int| |v_main_~#bb~0.base_BEFORE_CALL_3|) |v_main_~#bb~0.offset_BEFORE_CALL_3|))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (<= 0 (select (select |#memory_int| v_prenex_27) v_prenex_26)))))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:35:53,368 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 21:35:53,369 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:35:53,369 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 149#(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 21:35:53,369 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:35:53,369 INFO L193 IcfgInterpreter]: Reachable states at location L21-2 satisfy 110#(<= 0 main_~a~0) [2019-10-13 21:35:53,370 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 125#(exists ((v_prenex_27 Int) (|v_main_~#bb~0.offset_BEFORE_CALL_3| Int) (v_prenex_26 Int) (|v_main_~#bb~0.base_BEFORE_CALL_3| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (<= 0 (select (select |#memory_int| |v_main_~#bb~0.base_BEFORE_CALL_3|) |v_main_~#bb~0.offset_BEFORE_CALL_3|))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (<= 0 (select (select |#memory_int| v_prenex_27) v_prenex_26)))))) [2019-10-13 21:35:53,370 INFO L193 IcfgInterpreter]: Reachable states at location L30 satisfy 120#(and (<= 100000 main_~a~0) (<= 0 main_~b~0) (= main_~x~0 0) (< main_~x~0 main_~b~0) (<= 0 main_~a~0) (= (select (select |#memory_int| |main_~#bb~0.base|) (+ (* main_~x~0 4) |main_~#bb~0.offset|)) |main_#t~mem6|) (<= main_~x~0 0) (not (< main_~a~0 100000)) (<= 0 main_~x~0)) [2019-10-13 21:35:53,370 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 140#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_prenex_27 Int) (|v_main_~#bb~0.offset_BEFORE_CALL_3| Int) (v_prenex_26 Int) (|v_main_~#bb~0.base_BEFORE_CALL_3| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (<= 0 (select (select |#memory_int| |v_main_~#bb~0.base_BEFORE_CALL_3|) |v_main_~#bb~0.offset_BEFORE_CALL_3|))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (<= 0 (select (select |#memory_int| v_prenex_27) v_prenex_26)))))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:35:53,371 INFO L193 IcfgInterpreter]: Reachable states at location L12-2 satisfy 68#true [2019-10-13 21:35:53,680 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 21:35:53,681 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13, 11] total 35 [2019-10-13 21:35:53,681 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295091602] [2019-10-13 21:35:53,683 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2019-10-13 21:35:53,683 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:35:53,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2019-10-13 21:35:53,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=860, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:35:53,684 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand 35 states. [2019-10-13 21:35:55,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:35:55,096 INFO L93 Difference]: Finished difference Result 104 states and 139 transitions. [2019-10-13 21:35:55,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-10-13 21:35:55,097 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 32 [2019-10-13 21:35:55,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:35:55,099 INFO L225 Difference]: With dead ends: 104 [2019-10-13 21:35:55,099 INFO L226 Difference]: Without dead ends: 75 [2019-10-13 21:35:55,102 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1009 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=979, Invalid=3053, Unknown=0, NotChecked=0, Total=4032 [2019-10-13 21:35:55,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2019-10-13 21:35:55,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 69. [2019-10-13 21:35:55,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2019-10-13 21:35:55,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 75 transitions. [2019-10-13 21:35:55,115 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 75 transitions. Word has length 32 [2019-10-13 21:35:55,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:35:55,116 INFO L462 AbstractCegarLoop]: Abstraction has 69 states and 75 transitions. [2019-10-13 21:35:55,116 INFO L463 AbstractCegarLoop]: Interpolant automaton has 35 states. [2019-10-13 21:35:55,116 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 75 transitions. [2019-10-13 21:35:55,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-10-13 21:35:55,117 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:35:55,118 INFO L380 BasicCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:35:55,326 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:35:55,327 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:35:55,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:35:55,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1220247021, now seen corresponding path program 4 times [2019-10-13 21:35:55,327 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:35:55,328 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415022933] [2019-10-13 21:35:55,328 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:35:55,328 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:35:55,328 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:35:55,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:35:56,078 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2019-10-13 21:35:56,078 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415022933] [2019-10-13 21:35:56,079 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510824275] [2019-10-13 21:35:56,079 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 21:35:56,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:35:56,254 INFO L256 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 24 conjunts are in the unsatisfiable core [2019-10-13 21:35:56,270 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:35:56,308 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2019-10-13 21:35:56,309 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:35:57,094 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2019-10-13 21:35:57,095 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [967962302] [2019-10-13 21:35:57,096 INFO L162 IcfgInterpreter]: Started Sifa with 13 locations of interest [2019-10-13 21:35:57,097 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:35:57,097 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:35:57,097 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:35:57,098 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:35:57,118 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 21:35:57,324 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 21 for LOIs [2019-10-13 21:35:57,331 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:35:57,334 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:35:57,335 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:35:57,335 INFO L193 IcfgInterpreter]: Reachable states at location L3-1 satisfy 119#(and (exists ((|v_main_~#bb~0.offset_BEFORE_CALL_4| Int) (v_prenex_38 Int) (v_prenex_37 Int) (|v_main_~#bb~0.base_BEFORE_CALL_4| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (<= 0 (select (select |#memory_int| |v_main_~#bb~0.base_BEFORE_CALL_4|) |v_main_~#bb~0.offset_BEFORE_CALL_4|)))) (and (= |__VERIFIER_assert_#in~cond| 1) (<= 0 (select (select |#memory_int| v_prenex_38) v_prenex_37))))) (<= __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 21:35:57,335 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 128#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:35:57,335 INFO L193 IcfgInterpreter]: Reachable states at location L29-3 satisfy 99#(and (<= 100000 main_~a~0) (= main_~x~0 0) (<= 0 main_~a~0) (<= main_~x~0 0) (not (< main_~a~0 100000)) (<= 0 main_~x~0)) [2019-10-13 21:35:57,336 INFO L193 IcfgInterpreter]: Reachable states at location L3 satisfy 114#(and (exists ((|v_main_~#bb~0.offset_BEFORE_CALL_4| Int) (v_prenex_38 Int) (v_prenex_37 Int) (|v_main_~#bb~0.base_BEFORE_CALL_4| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (<= 0 (select (select |#memory_int| |v_main_~#bb~0.base_BEFORE_CALL_4|) |v_main_~#bb~0.offset_BEFORE_CALL_4|)))) (and (= |__VERIFIER_assert_#in~cond| 1) (<= 0 (select (select |#memory_int| v_prenex_38) v_prenex_37))))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:35:57,336 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 21:35:57,336 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:35:57,336 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 133#(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 21:35:57,336 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:35:57,337 INFO L193 IcfgInterpreter]: Reachable states at location L21-2 satisfy 94#(<= 0 main_~a~0) [2019-10-13 21:35:57,337 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 109#(exists ((|v_main_~#bb~0.offset_BEFORE_CALL_4| Int) (v_prenex_38 Int) (v_prenex_37 Int) (|v_main_~#bb~0.base_BEFORE_CALL_4| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (<= 0 (select (select |#memory_int| |v_main_~#bb~0.base_BEFORE_CALL_4|) |v_main_~#bb~0.offset_BEFORE_CALL_4|)))) (and (= |__VERIFIER_assert_#in~cond| 1) (<= 0 (select (select |#memory_int| v_prenex_38) v_prenex_37))))) [2019-10-13 21:35:57,337 INFO L193 IcfgInterpreter]: Reachable states at location L30 satisfy 104#(and (<= 100000 main_~a~0) (<= 0 main_~b~0) (= main_~x~0 0) (< main_~x~0 main_~b~0) (<= 0 main_~a~0) (= (select (select |#memory_int| |main_~#bb~0.base|) (+ (* main_~x~0 4) |main_~#bb~0.offset|)) |main_#t~mem6|) (<= main_~x~0 0) (not (< main_~a~0 100000)) (<= 0 main_~x~0)) [2019-10-13 21:35:57,337 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 124#(and (exists ((|v_main_~#bb~0.offset_BEFORE_CALL_4| Int) (v_prenex_38 Int) (v_prenex_37 Int) (|v_main_~#bb~0.base_BEFORE_CALL_4| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (<= 0 (select (select |#memory_int| |v_main_~#bb~0.base_BEFORE_CALL_4|) |v_main_~#bb~0.offset_BEFORE_CALL_4|)))) (and (= |__VERIFIER_assert_#in~cond| 1) (<= 0 (select (select |#memory_int| v_prenex_38) v_prenex_37))))) (<= __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 21:35:57,337 INFO L193 IcfgInterpreter]: Reachable states at location L12-2 satisfy 68#true [2019-10-13 21:35:57,706 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 21:35:57,707 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25, 11] total 59 [2019-10-13 21:35:57,707 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119188245] [2019-10-13 21:35:57,708 INFO L442 AbstractCegarLoop]: Interpolant automaton has 59 states [2019-10-13 21:35:57,709 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:35:57,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2019-10-13 21:35:57,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1206, Invalid=2216, Unknown=0, NotChecked=0, Total=3422 [2019-10-13 21:35:57,713 INFO L87 Difference]: Start difference. First operand 69 states and 75 transitions. Second operand 59 states. [2019-10-13 21:36:01,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:36:01,533 INFO L93 Difference]: Finished difference Result 164 states and 223 transitions. [2019-10-13 21:36:01,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2019-10-13 21:36:01,534 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 56 [2019-10-13 21:36:01,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:36:01,537 INFO L225 Difference]: With dead ends: 164 [2019-10-13 21:36:01,537 INFO L226 Difference]: Without dead ends: 123 [2019-10-13 21:36:01,541 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2755 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=3607, Invalid=8825, Unknown=0, NotChecked=0, Total=12432 [2019-10-13 21:36:01,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2019-10-13 21:36:01,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 117. [2019-10-13 21:36:01,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2019-10-13 21:36:01,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 123 transitions. [2019-10-13 21:36:01,559 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 123 transitions. Word has length 56 [2019-10-13 21:36:01,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:36:01,560 INFO L462 AbstractCegarLoop]: Abstraction has 117 states and 123 transitions. [2019-10-13 21:36:01,560 INFO L463 AbstractCegarLoop]: Interpolant automaton has 59 states. [2019-10-13 21:36:01,560 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 123 transitions. [2019-10-13 21:36:01,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-10-13 21:36:01,563 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:36:01,564 INFO L380 BasicCegarLoop]: trace histogram [46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:36:01,768 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:36:01,769 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:36:01,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:36:01,770 INFO L82 PathProgramCache]: Analyzing trace with hash 951799955, now seen corresponding path program 5 times [2019-10-13 21:36:01,770 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:36:01,770 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15454353] [2019-10-13 21:36:01,771 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:36:01,771 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:36:01,772 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:36:03,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:36:04,239 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2019-10-13 21:36:04,240 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15454353] [2019-10-13 21:36:04,240 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766707124] [2019-10-13 21:36:04,240 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