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-crafted/mapavg5.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:30:45,115 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:30:45,117 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:30:45,129 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:30:45,130 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:30:45,131 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:30:45,132 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:30:45,134 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:30:45,135 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:30:45,136 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:30:45,137 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:30:45,138 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:30:45,139 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:30:45,140 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:30:45,141 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:30:45,142 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:30:45,142 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:30:45,143 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:30:45,145 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:30:45,147 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:30:45,148 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:30:45,149 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:30:45,150 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:30:45,151 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:30:45,153 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 21:30:45,161 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:30:45,162 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:30:45,162 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:30:45,166 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 21:30:45,191 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:30:45,192 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:30:45,193 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:30:45,193 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:30:45,193 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:30:45,194 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:30:45,194 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:30:45,194 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:30:45,194 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:30:45,194 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:30:45,195 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:30:45,195 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:30:45,195 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:30:45,195 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:30:45,195 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:30:45,196 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:30:45,196 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:30:45,196 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:30:45,196 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:30:45,196 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:30:45,197 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:30:45,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:30:45,197 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:30:45,197 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:30:45,197 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:30:45,197 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:30:45,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:30:45,198 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:30:45,198 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 21:30:45,471 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:30:45,493 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:30:45,498 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:30:45,499 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:30:45,500 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:30:45,500 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/mapavg5.i [2019-10-13 21:30:45,562 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ef98d0f5/caff85efe34047fabd1904cabc583d4d/FLAG6ca533181 [2019-10-13 21:30:46,026 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:30:46,027 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/mapavg5.i [2019-10-13 21:30:46,033 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ef98d0f5/caff85efe34047fabd1904cabc583d4d/FLAG6ca533181 [2019-10-13 21:30:46,391 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ef98d0f5/caff85efe34047fabd1904cabc583d4d [2019-10-13 21:30:46,401 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:30:46,403 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:30:46,405 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:30:46,406 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:30:46,412 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:30:46,412 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:30:46" (1/1) ... [2019-10-13 21:30:46,415 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@207a2cf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:30:46, skipping insertion in model container [2019-10-13 21:30:46,416 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:30:46" (1/1) ... [2019-10-13 21:30:46,424 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:30:46,443 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:30:46,656 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:30:46,667 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:30:46,693 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:30:46,710 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:30:46,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:30:46 WrapperNode [2019-10-13 21:30:46,711 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:30:46,712 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:30:46,712 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:30:46,712 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:30:46,813 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:30:46" (1/1) ... [2019-10-13 21:30:46,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:30:46" (1/1) ... [2019-10-13 21:30:46,833 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:30:46" (1/1) ... [2019-10-13 21:30:46,834 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:30:46" (1/1) ... [2019-10-13 21:30:46,849 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:30:46" (1/1) ... [2019-10-13 21:30:46,858 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:30:46" (1/1) ... [2019-10-13 21:30:46,860 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:30:46" (1/1) ... [2019-10-13 21:30:46,862 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:30:46,863 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:30:46,866 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:30:46,866 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:30:46,867 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:30:46" (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 21:30:46,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:30:46,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:30:46,921 INFO L138 BoogieDeclarations]: Found implementation of procedure mapavg [2019-10-13 21:30:46,922 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:30:46,922 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:30:46,922 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:30:46,922 INFO L130 BoogieDeclarations]: Found specification of procedure mapavg [2019-10-13 21:30:46,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:30:46,922 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:30:46,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:30:46,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:30:46,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:30:46,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:30:46,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:30:47,322 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:30:47,322 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-13 21:30:47,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:30:47 BoogieIcfgContainer [2019-10-13 21:30:47,324 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:30:47,325 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:30:47,325 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:30:47,328 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:30:47,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:30:46" (1/3) ... [2019-10-13 21:30:47,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@462acc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:30:47, skipping insertion in model container [2019-10-13 21:30:47,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:30:46" (2/3) ... [2019-10-13 21:30:47,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@462acc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:30:47, skipping insertion in model container [2019-10-13 21:30:47,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:30:47" (3/3) ... [2019-10-13 21:30:47,332 INFO L109 eAbstractionObserver]: Analyzing ICFG mapavg5.i [2019-10-13 21:30:47,343 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:30:47,355 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:30:47,368 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:30:47,403 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:30:47,404 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:30:47,404 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:30:47,404 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:30:47,404 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:30:47,404 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:30:47,405 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:30:47,405 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:30:47,422 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2019-10-13 21:30:47,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-13 21:30:47,428 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:30:47,430 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:30:47,431 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:30:47,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:30:47,436 INFO L82 PathProgramCache]: Analyzing trace with hash 10585024, now seen corresponding path program 1 times [2019-10-13 21:30:47,443 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:30:47,444 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411259429] [2019-10-13 21:30:47,444 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:30:47,444 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:30:47,444 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:30:47,542 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 21:30:47,543 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1876346703] [2019-10-13 21:30:47,543 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 21:30:47,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:30:47,658 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:30:47,666 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:30:47,719 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-13 21:30:47,719 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:30:47,780 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-13 21:30:47,780 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411259429] [2019-10-13 21:30:47,781 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 21:30:47,781 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876346703] [2019-10-13 21:30:47,782 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:30:47,782 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-10-13 21:30:47,783 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944919088] [2019-10-13 21:30:47,789 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:30:47,790 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:30:47,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:30:47,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:30:47,809 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 4 states. [2019-10-13 21:30:47,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:30:47,938 INFO L93 Difference]: Finished difference Result 45 states and 57 transitions. [2019-10-13 21:30:47,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:30:47,942 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2019-10-13 21:30:47,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:30:47,952 INFO L225 Difference]: With dead ends: 45 [2019-10-13 21:30:47,952 INFO L226 Difference]: Without dead ends: 22 [2019-10-13 21:30:47,956 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:30:47,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-10-13 21:30:47,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-10-13 21:30:47,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-10-13 21:30:47,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2019-10-13 21:30:48,000 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 25 [2019-10-13 21:30:48,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:30:48,000 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2019-10-13 21:30:48,001 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:30:48,001 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2019-10-13 21:30:48,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-13 21:30:48,003 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:30:48,003 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:30:48,206 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:30:48,207 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:30:48,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:30:48,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1325864512, now seen corresponding path program 1 times [2019-10-13 21:30:48,209 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:30:48,209 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616585420] [2019-10-13 21:30:48,209 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:30:48,209 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:30:48,210 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:30:48,260 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 21:30:48,261 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1456590431] [2019-10-13 21:30:48,261 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 21:30:48,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:30:48,343 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:30:48,346 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:30:48,370 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-13 21:30:48,370 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:30:48,461 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-13 21:30:48,461 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616585420] [2019-10-13 21:30:48,462 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 21:30:48,462 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456590431] [2019-10-13 21:30:48,462 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:30:48,462 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2019-10-13 21:30:48,463 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968823682] [2019-10-13 21:30:48,466 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:30:48,466 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:30:48,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:30:48,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:30:48,468 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 4 states. [2019-10-13 21:30:48,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:30:48,523 INFO L93 Difference]: Finished difference Result 35 states and 45 transitions. [2019-10-13 21:30:48,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:30:48,525 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2019-10-13 21:30:48,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:30:48,527 INFO L225 Difference]: With dead ends: 35 [2019-10-13 21:30:48,528 INFO L226 Difference]: Without dead ends: 23 [2019-10-13 21:30:48,532 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:30:48,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-10-13 21:30:48,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-10-13 21:30:48,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-10-13 21:30:48,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2019-10-13 21:30:48,543 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 27 [2019-10-13 21:30:48,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:30:48,544 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2019-10-13 21:30:48,544 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:30:48,545 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2019-10-13 21:30:48,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-13 21:30:48,546 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:30:48,547 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:30:48,758 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:30:48,758 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:30:48,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:30:48,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1765970496, now seen corresponding path program 1 times [2019-10-13 21:30:48,764 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:30:48,764 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118141524] [2019-10-13 21:30:48,764 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:30:48,765 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:30:48,765 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:30:48,808 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 21:30:48,808 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1063828845] [2019-10-13 21:30:48,808 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 21:30:48,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:30:48,881 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 21:30:48,886 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:30:48,939 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-13 21:30:48,940 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:30:49,039 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-13 21:30:49,040 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118141524] [2019-10-13 21:30:49,040 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 21:30:49,041 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063828845] [2019-10-13 21:30:49,041 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1311793048] [2019-10-13 21:30:49,107 INFO L162 IcfgInterpreter]: Started Sifa with 20 locations of interest [2019-10-13 21:30:49,108 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:30:49,118 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:30:49,127 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:30:49,127 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:30:49,370 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-13 21:31:02,386 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (let ((.cse0 (+ |main_~#x~0.offset| 4))) (= (select (select |v_#memory_int_41| |main_~#x~0.base|) .cse0) (select (select |#memory_int| |main_~#x~0.base|) .cse0))) [2019-10-13 21:31:04,388 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (let ((.cse0 (+ |main_~#x~0.offset| 4))) (= (select (select |v_#memory_int_41| |main_~#x~0.base|) .cse0) (select (select |#memory_int| |main_~#x~0.base|) .cse0))) [2019-10-13 21:31:08,001 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:31:12,325 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= |main_~#x~0.offset| (+ |main_~#x~0.offset| 4)) [2019-10-13 21:31:17,812 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:31:22,297 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (let ((.cse0 (select |v_#memory_int_41| |main_~#x~0.base|))) (= (select .cse0 (+ |main_~#x~0.offset| 4)) (select .cse0 |main_~#x~0.offset|))) [2019-10-13 21:31:24,299 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (let ((.cse0 (select |v_#memory_int_41| |main_~#x~0.base|))) (= (select .cse0 (+ |main_~#x~0.offset| 4)) (select .cse0 |main_~#x~0.offset|))) [2019-10-13 21:31:26,684 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= main_~temp~0 (select (select |v_#memory_int_41| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) [2019-10-13 21:31:29,146 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) |main_~#x~0.offset|)) [2019-10-13 21:31:34,530 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= |main_~#x~0.offset| (+ |main_~#x~0.offset| 4)) [2019-10-13 21:31:35,926 WARN L225 Elim1Store]: Array PQE input equivalent to false