/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/array-fpi/indp4f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 01:21:27,162 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 01:21:27,167 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 01:21:27,231 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 01:21:27,231 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 01:21:27,236 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 01:21:27,241 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 01:21:27,247 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 01:21:27,252 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 01:21:27,258 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 01:21:27,263 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 01:21:27,265 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 01:21:27,266 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 01:21:27,270 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 01:21:27,272 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 01:21:27,275 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 01:21:27,292 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 01:21:27,296 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 01:21:27,304 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 01:21:27,313 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 01:21:27,318 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 01:21:27,320 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 01:21:27,322 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 01:21:27,326 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 01:21:27,336 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 01:21:27,357 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 01:21:27,359 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 01:21:27,360 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 01:21:27,361 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 01:21:27,415 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 01:21:27,416 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 01:21:27,423 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 01:21:27,423 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 01:21:27,424 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 01:21:27,424 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 01:21:27,424 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 01:21:27,424 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 01:21:27,425 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 01:21:27,425 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 01:21:27,426 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 01:21:27,427 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 01:21:27,428 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 01:21:27,428 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 01:21:27,428 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 01:21:27,428 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 01:21:27,429 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 01:21:27,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 01:21:27,429 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 01:21:27,429 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 01:21:27,430 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 01:21:27,430 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 01:21:27,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 01:21:27,430 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 01:21:27,430 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 01:21:27,431 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 01:21:27,848 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 01:21:27,892 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 01:21:27,895 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 01:21:27,897 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 01:21:27,897 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 01:21:27,899 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/indp4f.c [2020-12-23 01:21:27,995 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/767cad652/dbffe1748a624f52a3de2096e12ffba1/FLAG5500836ca [2020-12-23 01:21:28,651 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 01:21:28,652 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-fpi/indp4f.c [2020-12-23 01:21:28,660 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/767cad652/dbffe1748a624f52a3de2096e12ffba1/FLAG5500836ca [2020-12-23 01:21:29,036 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/767cad652/dbffe1748a624f52a3de2096e12ffba1 [2020-12-23 01:21:29,040 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 01:21:29,043 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 01:21:29,049 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 01:21:29,049 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 01:21:29,053 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 01:21:29,055 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:21:29" (1/1) ... [2020-12-23 01:21:29,059 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3045e0f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:21:29, skipping insertion in model container [2020-12-23 01:21:29,059 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:21:29" (1/1) ... [2020-12-23 01:21:29,070 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 01:21:29,094 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 01:21:29,279 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/array-fpi/indp4f.c[589,602] left hand side expression in assignment: lhs: VariableLHS[~N~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~a~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~a~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[8],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~a~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~a~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[8],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~a~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~a~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[8],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] [2020-12-23 01:21:29,305 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 01:21:29,318 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 01:21:29,334 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/array-fpi/indp4f.c[589,602] left hand side expression in assignment: lhs: VariableLHS[~N~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~a~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~a~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[8],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~a~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~a~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[8],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~a~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~a~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[8],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] [2020-12-23 01:21:29,344 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 01:21:29,376 INFO L208 MainTranslator]: Completed translation [2020-12-23 01:21:29,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:21:29 WrapperNode [2020-12-23 01:21:29,377 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 01:21:29,379 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 01:21:29,380 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 01:21:29,380 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 01:21:29,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:21:29" (1/1) ... [2020-12-23 01:21:29,419 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:21:29" (1/1) ... [2020-12-23 01:21:29,460 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 01:21:29,465 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 01:21:29,465 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 01:21:29,465 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 01:21:29,479 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:21:29" (1/1) ... [2020-12-23 01:21:29,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:21:29" (1/1) ... [2020-12-23 01:21:29,485 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:21:29" (1/1) ... [2020-12-23 01:21:29,485 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:21:29" (1/1) ... [2020-12-23 01:21:29,510 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:21:29" (1/1) ... [2020-12-23 01:21:29,523 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:21:29" (1/1) ... [2020-12-23 01:21:29,525 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:21:29" (1/1) ... [2020-12-23 01:21:29,537 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 01:21:29,538 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 01:21:29,539 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 01:21:29,541 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 01:21:29,542 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:21:29" (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 [2020-12-23 01:21:29,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 01:21:29,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 01:21:29,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 01:21:29,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-23 01:21:29,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 01:21:29,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 01:21:29,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 01:21:30,246 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 01:21:30,246 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2020-12-23 01:21:30,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:21:30 BoogieIcfgContainer [2020-12-23 01:21:30,249 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 01:21:30,252 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 01:21:30,252 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 01:21:30,257 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 01:21:30,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 01:21:29" (1/3) ... [2020-12-23 01:21:30,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e1b07c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:21:30, skipping insertion in model container [2020-12-23 01:21:30,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:21:29" (2/3) ... [2020-12-23 01:21:30,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e1b07c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:21:30, skipping insertion in model container [2020-12-23 01:21:30,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:21:30" (3/3) ... [2020-12-23 01:21:30,262 INFO L111 eAbstractionObserver]: Analyzing ICFG indp4f.c [2020-12-23 01:21:30,272 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 01:21:30,309 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 01:21:30,349 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 01:21:30,382 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 01:21:30,383 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 01:21:30,383 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 01:21:30,383 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 01:21:30,383 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 01:21:30,383 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 01:21:30,384 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 01:21:30,384 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 01:21:30,406 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-12-23 01:21:30,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 01:21:30,412 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:21:30,413 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:21:30,413 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:21:30,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:21:30,421 INFO L82 PathProgramCache]: Analyzing trace with hash -592971038, now seen corresponding path program 1 times [2020-12-23 01:21:30,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:21:30,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460943316] [2020-12-23 01:21:30,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:21:30,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:21:30,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:21:30,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460943316] [2020-12-23 01:21:30,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:21:30,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 01:21:30,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522103793] [2020-12-23 01:21:30,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 01:21:30,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:21:30,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 01:21:30,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 01:21:30,744 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2020-12-23 01:21:30,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:21:30,774 INFO L93 Difference]: Finished difference Result 44 states and 62 transitions. [2020-12-23 01:21:30,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 01:21:30,776 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2020-12-23 01:21:30,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:21:30,803 INFO L225 Difference]: With dead ends: 44 [2020-12-23 01:21:30,803 INFO L226 Difference]: Without dead ends: 20 [2020-12-23 01:21:30,807 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 01:21:30,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-23 01:21:30,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-12-23 01:21:30,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-23 01:21:30,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-12-23 01:21:30,865 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 14 [2020-12-23 01:21:30,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:21:30,866 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-12-23 01:21:30,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 01:21:30,866 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-12-23 01:21:30,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 01:21:30,869 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:21:30,869 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:21:30,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 01:21:30,871 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:21:30,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:21:30,876 INFO L82 PathProgramCache]: Analyzing trace with hash 108093540, now seen corresponding path program 1 times [2020-12-23 01:21:30,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:21:30,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867987337] [2020-12-23 01:21:30,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:21:30,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:21:31,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:21:31,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867987337] [2020-12-23 01:21:31,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:21:31,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 01:21:31,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111486810] [2020-12-23 01:21:31,053 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 01:21:31,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:21:31,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 01:21:31,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 01:21:31,055 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 4 states. [2020-12-23 01:21:31,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:21:31,157 INFO L93 Difference]: Finished difference Result 45 states and 53 transitions. [2020-12-23 01:21:31,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 01:21:31,158 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-23 01:21:31,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:21:31,160 INFO L225 Difference]: With dead ends: 45 [2020-12-23 01:21:31,160 INFO L226 Difference]: Without dead ends: 32 [2020-12-23 01:21:31,161 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 01:21:31,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-12-23 01:21:31,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2020-12-23 01:21:31,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-23 01:21:31,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-12-23 01:21:31,169 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 14 [2020-12-23 01:21:31,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:21:31,169 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-12-23 01:21:31,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 01:21:31,170 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-12-23 01:21:31,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 01:21:31,171 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:21:31,171 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:21:31,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 01:21:31,171 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:21:31,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:21:31,172 INFO L82 PathProgramCache]: Analyzing trace with hash 615941150, now seen corresponding path program 1 times [2020-12-23 01:21:31,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:21:31,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453912018] [2020-12-23 01:21:31,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:21:31,205 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:21:31,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2098081113] [2020-12-23 01:21:31,205 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 [2020-12-23 01:21:31,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 01:21:31,275 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 01:21:31,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 01:21:31,299 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 01:21:31,351 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-23 01:21:31,351 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 01:21:31,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-23 01:21:31,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 01:21:31 BoogieIcfgContainer [2020-12-23 01:21:31,652 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 01:21:31,654 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 01:21:31,654 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 01:21:31,655 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 01:21:31,656 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:21:30" (3/4) ... [2020-12-23 01:21:31,660 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-23 01:21:31,792 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/array-fpi/indp4f.c-witness.graphml [2020-12-23 01:21:31,793 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 01:21:31,797 INFO L168 Benchmark]: Toolchain (without parser) took 2751.41 ms. Allocated memory is still 153.1 MB. Free memory was 129.3 MB in the beginning and 87.7 MB in the end (delta: 41.5 MB). Peak memory consumption was 41.8 MB. Max. memory is 8.0 GB. [2020-12-23 01:21:31,799 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 153.1 MB. Free memory is still 125.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 01:21:31,800 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.59 ms. Allocated memory is still 153.1 MB. Free memory was 129.1 MB in the beginning and 119.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-23 01:21:31,805 INFO L168 Benchmark]: Boogie Procedure Inliner took 83.46 ms. Allocated memory is still 153.1 MB. Free memory was 118.9 MB in the beginning and 117.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 01:21:31,808 INFO L168 Benchmark]: Boogie Preprocessor took 72.50 ms. Allocated memory is still 153.1 MB. Free memory was 117.5 MB in the beginning and 116.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 01:21:31,809 INFO L168 Benchmark]: RCFGBuilder took 710.30 ms. Allocated memory is still 153.1 MB. Free memory was 116.1 MB in the beginning and 135.4 MB in the end (delta: -19.3 MB). Peak memory consumption was 16.7 MB. Max. memory is 8.0 GB. [2020-12-23 01:21:31,810 INFO L168 Benchmark]: TraceAbstraction took 1400.83 ms. Allocated memory is still 153.1 MB. Free memory was 134.9 MB in the beginning and 90.3 MB in the end (delta: 44.6 MB). Peak memory consumption was 43.0 MB. Max. memory is 8.0 GB. [2020-12-23 01:21:31,811 INFO L168 Benchmark]: Witness Printer took 139.13 ms. Allocated memory is still 153.1 MB. Free memory was 90.3 MB in the beginning and 87.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-23 01:21:31,819 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 153.1 MB. Free memory is still 125.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 328.59 ms. Allocated memory is still 153.1 MB. Free memory was 129.1 MB in the beginning and 119.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 83.46 ms. Allocated memory is still 153.1 MB. Free memory was 118.9 MB in the beginning and 117.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 72.50 ms. Allocated memory is still 153.1 MB. Free memory was 117.5 MB in the beginning and 116.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 710.30 ms. Allocated memory is still 153.1 MB. Free memory was 116.1 MB in the beginning and 135.4 MB in the end (delta: -19.3 MB). Peak memory consumption was 16.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1400.83 ms. Allocated memory is still 153.1 MB. Free memory was 134.9 MB in the beginning and 90.3 MB in the end (delta: 44.6 MB). Peak memory consumption was 43.0 MB. Max. memory is 8.0 GB. * Witness Printer took 139.13 ms. Allocated memory is still 153.1 MB. Free memory was 90.3 MB in the beginning and 87.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; VAL [N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L13] COND FALSE !(!cond) VAL [N=1] [L27] int i; [L28] long long *a = malloc(sizeof(long long)*N); [L30] i=0 VAL [N=1] [L30] COND TRUE i