/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/loops/matrix-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 16:39:50,625 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 16:39:50,628 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 16:39:50,686 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 16:39:50,687 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 16:39:50,691 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 16:39:50,695 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 16:39:50,701 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 16:39:50,705 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 16:39:50,712 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 16:39:50,717 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 16:39:50,719 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 16:39:50,719 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 16:39:50,723 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 16:39:50,725 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 16:39:50,727 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 16:39:50,728 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 16:39:50,732 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 16:39:50,740 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 16:39:50,748 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 16:39:50,750 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 16:39:50,753 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 16:39:50,755 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 16:39:50,774 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 16:39:50,777 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 16:39:50,788 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 16:39:50,789 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 16:39:50,790 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 16:39:50,791 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 16:39:50,824 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 16:39:50,825 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 16:39:50,826 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 16:39:50,827 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 16:39:50,827 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 16:39:50,827 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 16:39:50,827 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 16:39:50,828 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 16:39:50,828 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 16:39:50,828 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 16:39:50,828 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 16:39:50,828 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 16:39:50,829 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 16:39:50,829 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 16:39:50,829 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 16:39:50,829 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 16:39:50,830 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 16:39:50,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 16:39:50,830 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 16:39:50,830 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 16:39:50,830 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 16:39:50,831 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 16:39:50,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 16:39:50,831 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 16:39:50,831 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 16:39:50,831 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 16:39:51,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 16:39:51,295 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 16:39:51,299 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 16:39:51,300 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 16:39:51,308 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 16:39:51,309 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/matrix-2.c [2021-01-06 16:39:51,392 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/1c7793c60/d247238a3d11404daa3ba6eea491dcad/FLAG8ea66b078 [2021-01-06 16:39:52,062 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 16:39:52,063 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/loops/matrix-2.c [2021-01-06 16:39:52,071 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/1c7793c60/d247238a3d11404daa3ba6eea491dcad/FLAG8ea66b078 [2021-01-06 16:39:52,415 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/1c7793c60/d247238a3d11404daa3ba6eea491dcad [2021-01-06 16:39:52,425 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 16:39:52,428 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 16:39:52,435 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 16:39:52,435 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 16:39:52,439 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 16:39:52,440 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:39:52" (1/1) ... [2021-01-06 16:39:52,443 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68762216 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:39:52, skipping insertion in model container [2021-01-06 16:39:52,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:39:52" (1/1) ... [2021-01-06 16:39:52,452 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 16:39:52,475 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 16:39:52,620 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/loops/matrix-2.c[320,333] left hand side expression in assignment: lhs: VariableLHS[~maior~0,] left hand side expression in assignment: lhs: VariableLHS[~j~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: ArrayLHS[ArrayLHS[VariableLHS[~matriz~0,],[BinaryExpression[ARITHMOD,IdentifierExpression[~j~0,],IntegerLiteral[4294967296]]]],[BinaryExpression[ARITHMOD,IdentifierExpression[~k~0,],IntegerLiteral[4294967296]]]] left hand side expression in assignment: lhs: VariableLHS[~maior~0,] left hand side expression in assignment: lhs: VariableLHS[~j~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] [2021-01-06 16:39:52,651 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:39:52,659 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 16:39:52,673 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/loops/matrix-2.c[320,333] left hand side expression in assignment: lhs: VariableLHS[~maior~0,] left hand side expression in assignment: lhs: VariableLHS[~j~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#matriz~0,],base],BinaryExpression[ARITHPLUS,BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#matriz~0,],offset],BinaryExpression[ARITHMUL,BinaryExpression[ARITHMOD,IdentifierExpression[~j~0,],IntegerLiteral[4294967296]],BinaryExpression[ARITHMUL,IntegerLiteral[4],BinaryExpression[ARITHMOD,IdentifierExpression[~N_LIN~0,],IntegerLiteral[4294967296]]]]],BinaryExpression[ARITHMUL,IntegerLiteral[4],BinaryExpression[ARITHMOD,IdentifierExpression[~k~0,],IntegerLiteral[4294967296]]]]]] left hand side expression in assignment: lhs: VariableLHS[~maior~0,] left hand side expression in assignment: lhs: VariableLHS[~j~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] [2021-01-06 16:39:52,684 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:39:52,701 INFO L208 MainTranslator]: Completed translation [2021-01-06 16:39:52,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:39:52 WrapperNode [2021-01-06 16:39:52,702 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 16:39:52,703 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 16:39:52,703 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 16:39:52,703 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 16:39:52,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:39:52" (1/1) ... [2021-01-06 16:39:52,722 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:39:52" (1/1) ... [2021-01-06 16:39:52,746 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 16:39:52,747 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 16:39:52,747 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 16:39:52,747 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 16:39:52,757 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:39:52" (1/1) ... [2021-01-06 16:39:52,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:39:52" (1/1) ... [2021-01-06 16:39:52,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:39:52" (1/1) ... [2021-01-06 16:39:52,760 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:39:52" (1/1) ... [2021-01-06 16:39:52,767 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:39:52" (1/1) ... [2021-01-06 16:39:52,772 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:39:52" (1/1) ... [2021-01-06 16:39:52,774 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:39:52" (1/1) ... [2021-01-06 16:39:52,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 16:39:52,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 16:39:52,777 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 16:39:52,778 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 16:39:52,779 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:39:52" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 16:39:52,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 16:39:52,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 16:39:52,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-06 16:39:52,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 16:39:52,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 16:39:52,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-06 16:39:52,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-06 16:39:53,206 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 16:39:53,207 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-01-06 16:39:53,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:39:53 BoogieIcfgContainer [2021-01-06 16:39:53,214 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 16:39:53,216 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 16:39:53,217 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 16:39:53,222 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 16:39:53,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 04:39:52" (1/3) ... [2021-01-06 16:39:53,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32046eb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:39:53, skipping insertion in model container [2021-01-06 16:39:53,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:39:52" (2/3) ... [2021-01-06 16:39:53,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32046eb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:39:53, skipping insertion in model container [2021-01-06 16:39:53,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:39:53" (3/3) ... [2021-01-06 16:39:53,226 INFO L111 eAbstractionObserver]: Analyzing ICFG matrix-2.c [2021-01-06 16:39:53,234 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 16:39:53,241 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 16:39:53,269 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 16:39:53,306 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 16:39:53,307 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 16:39:53,307 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 16:39:53,307 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 16:39:53,307 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 16:39:53,308 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 16:39:53,308 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 16:39:53,308 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 16:39:53,328 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2021-01-06 16:39:53,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-06 16:39:53,336 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:39:53,337 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:39:53,337 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:39:53,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:39:53,348 INFO L82 PathProgramCache]: Analyzing trace with hash 228332486, now seen corresponding path program 1 times [2021-01-06 16:39:53,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:39:53,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760990606] [2021-01-06 16:39:53,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:39:53,573 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 16:39:53,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [670938412] [2021-01-06 16:39:53,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 16:39:53,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:39:53,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2021-01-06 16:39:53,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:39:53,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:39:53,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760990606] [2021-01-06 16:39:53,904 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 16:39:53,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670938412] [2021-01-06 16:39:53,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:39:53,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 16:39:53,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458527633] [2021-01-06 16:39:53,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 16:39:53,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:39:53,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 16:39:53,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 16:39:53,947 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 4 states. [2021-01-06 16:39:54,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:39:54,099 INFO L93 Difference]: Finished difference Result 57 states and 86 transitions. [2021-01-06 16:39:54,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 16:39:54,102 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2021-01-06 16:39:54,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:39:54,112 INFO L225 Difference]: With dead ends: 57 [2021-01-06 16:39:54,113 INFO L226 Difference]: Without dead ends: 29 [2021-01-06 16:39:54,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 16:39:54,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-01-06 16:39:54,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 17. [2021-01-06 16:39:54,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-01-06 16:39:54,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2021-01-06 16:39:54,167 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 8 [2021-01-06 16:39:54,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:39:54,169 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2021-01-06 16:39:54,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 16:39:54,170 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2021-01-06 16:39:54,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 16:39:54,171 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:39:54,171 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:39:54,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-01-06 16:39:54,386 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:39:54,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:39:54,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1185124407, now seen corresponding path program 1 times [2021-01-06 16:39:54,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:39:54,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765291488] [2021-01-06 16:39:54,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:39:54,408 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 16:39:54,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1641547226] [2021-01-06 16:39:54,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 16:39:54,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:39:54,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 4 conjunts are in the unsatisfiable core [2021-01-06 16:39:54,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:39:54,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:39:54,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765291488] [2021-01-06 16:39:54,572 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 16:39:54,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641547226] [2021-01-06 16:39:54,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:39:54,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 16:39:54,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358332924] [2021-01-06 16:39:54,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 16:39:54,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:39:54,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 16:39:54,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 16:39:54,576 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 4 states. [2021-01-06 16:39:54,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:39:54,637 INFO L93 Difference]: Finished difference Result 47 states and 61 transitions. [2021-01-06 16:39:54,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 16:39:54,638 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-01-06 16:39:54,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:39:54,639 INFO L225 Difference]: With dead ends: 47 [2021-01-06 16:39:54,639 INFO L226 Difference]: Without dead ends: 26 [2021-01-06 16:39:54,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 16:39:54,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-01-06 16:39:54,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 19. [2021-01-06 16:39:54,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-01-06 16:39:54,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2021-01-06 16:39:54,646 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 11 [2021-01-06 16:39:54,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:39:54,647 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2021-01-06 16:39:54,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 16:39:54,647 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2021-01-06 16:39:54,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 16:39:54,648 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:39:54,648 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:39:54,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:39:54,862 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:39:54,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:39:54,864 INFO L82 PathProgramCache]: Analyzing trace with hash 206458815, now seen corresponding path program 1 times [2021-01-06 16:39:54,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:39:54,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368275519] [2021-01-06 16:39:54,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:39:54,881 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 16:39:54,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1689866408] [2021-01-06 16:39:54,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 16:39:54,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 16:39:54,956 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 16:39:54,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 16:39:54,993 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 16:39:55,047 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-01-06 16:39:55,048 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 16:39:55,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:39:55,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 04:39:55 BoogieIcfgContainer [2021-01-06 16:39:55,299 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 16:39:55,300 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 16:39:55,300 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 16:39:55,300 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 16:39:55,301 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:39:53" (3/4) ... [2021-01-06 16:39:55,303 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-01-06 16:39:55,355 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/loops/matrix-2.c-witness.graphml [2021-01-06 16:39:55,355 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 16:39:55,357 INFO L168 Benchmark]: Toolchain (without parser) took 2929.22 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 60.6 MB in the end (delta: 65.6 MB). Peak memory consumption was 65.0 MB. Max. memory is 8.0 GB. [2021-01-06 16:39:55,358 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 124.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 16:39:55,359 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.51 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 116.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-01-06 16:39:55,359 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.98 ms. Allocated memory is still 151.0 MB. Free memory was 116.0 MB in the beginning and 114.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 16:39:55,360 INFO L168 Benchmark]: Boogie Preprocessor took 29.61 ms. Allocated memory is still 151.0 MB. Free memory was 114.5 MB in the beginning and 113.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 16:39:55,361 INFO L168 Benchmark]: RCFGBuilder took 437.25 ms. Allocated memory is still 151.0 MB. Free memory was 113.3 MB in the beginning and 131.4 MB in the end (delta: -18.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-01-06 16:39:55,362 INFO L168 Benchmark]: TraceAbstraction took 2082.55 ms. Allocated memory is still 151.0 MB. Free memory was 130.9 MB in the beginning and 62.7 MB in the end (delta: 68.2 MB). Peak memory consumption was 68.2 MB. Max. memory is 8.0 GB. [2021-01-06 16:39:55,362 INFO L168 Benchmark]: Witness Printer took 55.87 ms. Allocated memory is still 151.0 MB. Free memory was 62.7 MB in the beginning and 60.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 16:39:55,366 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 124.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 267.51 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 116.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 42.98 ms. Allocated memory is still 151.0 MB. Free memory was 116.0 MB in the beginning and 114.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 29.61 ms. Allocated memory is still 151.0 MB. Free memory was 114.5 MB in the beginning and 113.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 437.25 ms. Allocated memory is still 151.0 MB. Free memory was 113.3 MB in the beginning and 131.4 MB in the end (delta: -18.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2082.55 ms. Allocated memory is still 151.0 MB. Free memory was 130.9 MB in the beginning and 62.7 MB in the end (delta: 68.2 MB). Peak memory consumption was 68.2 MB. Max. memory is 8.0 GB. * Witness Printer took 55.87 ms. Allocated memory is still 151.0 MB. Free memory was 62.7 MB in the beginning and 60.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 7]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L16] unsigned int N_LIN=__VERIFIER_nondet_uint(); [L17] unsigned int N_COL=__VERIFIER_nondet_uint(); [L18] unsigned int j,k; [L19] int matriz[N_COL][N_LIN], maior; [L21] maior = __VERIFIER_nondet_int() [L22] j=0 [L22] COND TRUE jmaior [L28] EXPR matriz[j][k] [L28] maior = matriz[j][k] [L23] k++ [L23] COND FALSE !(k