/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/sqmf.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 01:34:41,195 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 01:34:41,200 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 01:34:41,240 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 01:34:41,240 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 01:34:41,242 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 01:34:41,244 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 01:34:41,246 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 01:34:41,248 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 01:34:41,249 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 01:34:41,251 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 01:34:41,252 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 01:34:41,253 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 01:34:41,254 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 01:34:41,255 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 01:34:41,257 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 01:34:41,258 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 01:34:41,259 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 01:34:41,261 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 01:34:41,263 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 01:34:41,265 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 01:34:41,267 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 01:34:41,268 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 01:34:41,269 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 01:34:41,273 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 01:34:41,283 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 01:34:41,284 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 01:34:41,285 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 01:34:41,286 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 01:34:41,340 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 01:34:41,341 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 01:34:41,345 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 01:34:41,345 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 01:34:41,345 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 01:34:41,345 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 01:34:41,346 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 01:34:41,346 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 01:34:41,347 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 01:34:41,348 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 01:34:41,349 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 01:34:41,349 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 01:34:41,349 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 01:34:41,349 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 01:34:41,350 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 01:34:41,350 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 01:34:41,350 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 01:34:41,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 01:34:41,351 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 01:34:41,351 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 01:34:41,351 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 01:34:41,351 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 01:34:41,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 01:34:41,352 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 01:34:41,352 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 01:34:41,352 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 01:34:41,743 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 01:34:41,773 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 01:34:41,777 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 01:34:41,779 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 01:34:41,779 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 01:34:41,780 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/sqmf.c [2020-12-23 01:34:41,903 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/557a0c412/90bbfe4d6f6945d89fedf0bb64255926/FLAG30e5985d7 [2020-12-23 01:34:42,648 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 01:34:42,649 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-fpi/sqmf.c [2020-12-23 01:34:42,657 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/557a0c412/90bbfe4d6f6945d89fedf0bb64255926/FLAG30e5985d7 [2020-12-23 01:34:43,021 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/557a0c412/90bbfe4d6f6945d89fedf0bb64255926 [2020-12-23 01:34:43,024 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 01:34:43,027 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 01:34:43,031 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 01:34:43,032 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 01:34:43,039 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 01:34:43,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:34:43" (1/1) ... [2020-12-23 01:34:43,042 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f26717d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:34:43, skipping insertion in model container [2020-12-23 01:34:43,042 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:34:43" (1/1) ... [2020-12-23 01:34:43,053 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 01:34:43,073 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 01:34:43,253 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/sqmf.c[587,600] left hand side expression in assignment: lhs: VariableLHS[~N~0,GLOBAL] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~b~0,],base],StructAccessExpression[IdentifierExpression[~b~0,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~a~0,],base],StructAccessExpression[IdentifierExpression[~a~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~b~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~b~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 01:34:43,279 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 01:34:43,301 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 01:34:43,324 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/sqmf.c[587,600] left hand side expression in assignment: lhs: VariableLHS[~N~0,GLOBAL] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~b~0,],base],StructAccessExpression[IdentifierExpression[~b~0,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~a~0,],base],StructAccessExpression[IdentifierExpression[~a~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~b~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~b~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 01:34:43,346 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 01:34:43,371 INFO L208 MainTranslator]: Completed translation [2020-12-23 01:34:43,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:34:43 WrapperNode [2020-12-23 01:34:43,372 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 01:34:43,375 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 01:34:43,375 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 01:34:43,375 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 01:34:43,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:34:43" (1/1) ... [2020-12-23 01:34:43,410 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:34:43" (1/1) ... [2020-12-23 01:34:43,453 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 01:34:43,456 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 01:34:43,456 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 01:34:43,456 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 01:34:43,470 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:34:43" (1/1) ... [2020-12-23 01:34:43,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:34:43" (1/1) ... [2020-12-23 01:34:43,477 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:34:43" (1/1) ... [2020-12-23 01:34:43,478 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:34:43" (1/1) ... [2020-12-23 01:34:43,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:34:43" (1/1) ... [2020-12-23 01:34:43,512 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:34:43" (1/1) ... [2020-12-23 01:34:43,519 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:34:43" (1/1) ... [2020-12-23 01:34:43,524 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 01:34:43,525 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 01:34:43,525 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 01:34:43,526 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 01:34:43,528 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:34:43" (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 01:34:43,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 01:34:43,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 01:34:43,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 01:34:43,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-23 01:34:43,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 01:34:43,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 01:34:43,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 01:34:44,219 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 01:34:44,219 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2020-12-23 01:34:44,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:34:44 BoogieIcfgContainer [2020-12-23 01:34:44,221 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 01:34:44,226 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 01:34:44,229 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 01:34:44,240 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 01:34:44,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 01:34:43" (1/3) ... [2020-12-23 01:34:44,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6567afc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:34:44, skipping insertion in model container [2020-12-23 01:34:44,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:34:43" (2/3) ... [2020-12-23 01:34:44,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6567afc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:34:44, skipping insertion in model container [2020-12-23 01:34:44,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:34:44" (3/3) ... [2020-12-23 01:34:44,251 INFO L111 eAbstractionObserver]: Analyzing ICFG sqmf.c [2020-12-23 01:34:44,266 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 01:34:44,278 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 01:34:44,307 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 01:34:44,332 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 01:34:44,332 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 01:34:44,333 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 01:34:44,333 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 01:34:44,333 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 01:34:44,333 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 01:34:44,333 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 01:34:44,333 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 01:34:44,348 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-12-23 01:34:44,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 01:34:44,354 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:34:44,355 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:34:44,356 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:34:44,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:34:44,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1828546148, now seen corresponding path program 1 times [2020-12-23 01:34:44,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:34:44,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138529124] [2020-12-23 01:34:44,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:34:44,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:34:44,545 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 01:34:44,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138529124] [2020-12-23 01:34:44,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:34:44,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 01:34:44,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056366114] [2020-12-23 01:34:44,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 01:34:44,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:34:44,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 01:34:44,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 01:34:44,581 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2020-12-23 01:34:44,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:34:44,602 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions. [2020-12-23 01:34:44,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 01:34:44,604 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-12-23 01:34:44,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:34:44,630 INFO L225 Difference]: With dead ends: 38 [2020-12-23 01:34:44,630 INFO L226 Difference]: Without dead ends: 17 [2020-12-23 01:34:44,634 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 01:34:44,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-12-23 01:34:44,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-12-23 01:34:44,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-12-23 01:34:44,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2020-12-23 01:34:44,671 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2020-12-23 01:34:44,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:34:44,671 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2020-12-23 01:34:44,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 01:34:44,672 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2020-12-23 01:34:44,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 01:34:44,673 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:34:44,674 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:34:44,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 01:34:44,675 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:34:44,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:34:44,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1148487778, now seen corresponding path program 1 times [2020-12-23 01:34:44,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:34:44,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133422609] [2020-12-23 01:34:44,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:34:44,731 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:34:44,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [966914699] [2020-12-23 01:34:44,732 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 01:34:44,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 01:34:44,868 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 01:34:44,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 01:34:44,924 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 01:34:44,989 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-23 01:34:44,989 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 01:34:45,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-23 01:34:45,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 01:34:45 BoogieIcfgContainer [2020-12-23 01:34:45,265 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 01:34:45,266 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 01:34:45,266 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 01:34:45,266 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 01:34:45,267 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:34:44" (3/4) ... [2020-12-23 01:34:45,270 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-23 01:34:45,320 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/array-fpi/sqmf.c-witness.graphml [2020-12-23 01:34:45,320 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 01:34:45,322 INFO L168 Benchmark]: Toolchain (without parser) took 2295.51 ms. Allocated memory is still 151.0 MB. Free memory was 125.2 MB in the beginning and 123.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.7 MB. Max. memory is 8.0 GB. [2020-12-23 01:34:45,323 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 125.8 MB. Free memory is still 80.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 01:34:45,324 INFO L168 Benchmark]: CACSL2BoogieTranslator took 342.12 ms. Allocated memory is still 151.0 MB. Free memory was 125.0 MB in the beginning and 114.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-23 01:34:45,324 INFO L168 Benchmark]: Boogie Procedure Inliner took 78.78 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 112.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 01:34:45,325 INFO L168 Benchmark]: Boogie Preprocessor took 68.38 ms. Allocated memory is still 151.0 MB. Free memory was 112.6 MB in the beginning and 111.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 01:34:45,326 INFO L168 Benchmark]: RCFGBuilder took 698.81 ms. Allocated memory is still 151.0 MB. Free memory was 111.3 MB in the beginning and 122.3 MB in the end (delta: -11.0 MB). Peak memory consumption was 7.1 MB. Max. memory is 8.0 GB. [2020-12-23 01:34:45,326 INFO L168 Benchmark]: TraceAbstraction took 1039.66 ms. Allocated memory is still 151.0 MB. Free memory was 122.0 MB in the beginning and 125.7 MB in the end (delta: -3.7 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 01:34:45,327 INFO L168 Benchmark]: Witness Printer took 53.98 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 123.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 01:34:45,331 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 125.8 MB. Free memory is still 80.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 342.12 ms. Allocated memory is still 151.0 MB. Free memory was 125.0 MB in the beginning and 114.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 78.78 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 112.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 68.38 ms. Allocated memory is still 151.0 MB. Free memory was 112.6 MB in the beginning and 111.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 698.81 ms. Allocated memory is still 151.0 MB. Free memory was 111.3 MB in the beginning and 122.3 MB in the end (delta: -11.0 MB). Peak memory consumption was 7.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1039.66 ms. Allocated memory is still 151.0 MB. Free memory was 122.0 MB in the beginning and 125.7 MB in the end (delta: -3.7 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 53.98 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 123.6 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: 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); [L29] long long *b = malloc(sizeof(long long)*N); [L31] b[0] = 0 [L32] a[0] = 0 [L34] i=1 VAL [N=1] [L34] COND FALSE !(i