/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/eqn4f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 01:17:46,928 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 01:17:46,932 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 01:17:46,978 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 01:17:46,979 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 01:17:46,980 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 01:17:46,983 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 01:17:46,986 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 01:17:46,988 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 01:17:46,990 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 01:17:46,991 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 01:17:46,993 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 01:17:46,994 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 01:17:46,995 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 01:17:46,997 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 01:17:46,999 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 01:17:47,017 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 01:17:47,019 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 01:17:47,025 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 01:17:47,033 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 01:17:47,035 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 01:17:47,039 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 01:17:47,043 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 01:17:47,047 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 01:17:47,051 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 01:17:47,062 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 01:17:47,063 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 01:17:47,064 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 01:17:47,066 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 01:17:47,068 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 01:17:47,069 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 01:17:47,070 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 01:17:47,071 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 01:17:47,075 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 01:17:47,077 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 01:17:47,078 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 01:17:47,079 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 01:17:47,134 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 01:17:47,135 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 01:17:47,137 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 01:17:47,137 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 01:17:47,137 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 01:17:47,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 01:17:47,138 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 01:17:47,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 01:17:47,138 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 01:17:47,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 01:17:47,139 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 01:17:47,139 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 01:17:47,139 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 01:17:47,139 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 01:17:47,140 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 01:17:47,140 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 01:17:47,140 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 01:17:47,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 01:17:47,141 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 01:17:47,141 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 01:17:47,141 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 01:17:47,141 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 01:17:47,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 01:17:47,142 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 01:17:47,142 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 01:17:47,142 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 01:17:47,554 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 01:17:47,594 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 01:17:47,597 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 01:17:47,599 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 01:17:47,600 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 01:17:47,602 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/eqn4f.c [2020-12-23 01:17:47,697 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/0251a67ed/a3f20c329aa0404f90fb20756bcadc9d/FLAGac71a0af7 [2020-12-23 01:17:48,495 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 01:17:48,496 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-fpi/eqn4f.c [2020-12-23 01:17:48,504 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/0251a67ed/a3f20c329aa0404f90fb20756bcadc9d/FLAGac71a0af7 [2020-12-23 01:17:48,788 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/0251a67ed/a3f20c329aa0404f90fb20756bcadc9d [2020-12-23 01:17:48,798 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 01:17:48,803 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 01:17:48,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 01:17:48,806 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 01:17:48,811 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 01:17:48,812 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:17:48" (1/1) ... [2020-12-23 01:17:48,815 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@156ec5c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:17:48, skipping insertion in model container [2020-12-23 01:17:48,815 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:17:48" (1/1) ... [2020-12-23 01:17:48,824 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 01:17:48,845 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 01:17:48,994 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/eqn4f.c[588,601] left hand side expression in assignment: lhs: VariableLHS[~N~0,GLOBAL] 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: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~b~0,],base],StructAccessExpression[IdentifierExpression[~b~0,],offset]]] 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[~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,] [2020-12-23 01:17:49,024 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 01:17:49,036 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 01:17:49,051 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/eqn4f.c[588,601] left hand side expression in assignment: lhs: VariableLHS[~N~0,GLOBAL] 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: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~b~0,],base],StructAccessExpression[IdentifierExpression[~b~0,],offset]]] 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[~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,] [2020-12-23 01:17:49,061 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 01:17:49,079 INFO L208 MainTranslator]: Completed translation [2020-12-23 01:17:49,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:17:49 WrapperNode [2020-12-23 01:17:49,080 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 01:17:49,081 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 01:17:49,082 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 01:17:49,082 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 01:17:49,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:17:49" (1/1) ... [2020-12-23 01:17:49,102 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:17:49" (1/1) ... [2020-12-23 01:17:49,127 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 01:17:49,128 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 01:17:49,128 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 01:17:49,128 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 01:17:49,138 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:17:49" (1/1) ... [2020-12-23 01:17:49,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:17:49" (1/1) ... [2020-12-23 01:17:49,141 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:17:49" (1/1) ... [2020-12-23 01:17:49,142 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:17:49" (1/1) ... [2020-12-23 01:17:49,149 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:17:49" (1/1) ... [2020-12-23 01:17:49,154 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:17:49" (1/1) ... [2020-12-23 01:17:49,156 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:17:49" (1/1) ... [2020-12-23 01:17:49,159 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 01:17:49,160 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 01:17:49,160 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 01:17:49,160 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 01:17:49,161 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:17:49" (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 01:17:49,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 01:17:49,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 01:17:49,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 01:17:49,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-23 01:17:49,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 01:17:49,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 01:17:49,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 01:17:49,728 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 01:17:49,729 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2020-12-23 01:17:49,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:17:49 BoogieIcfgContainer [2020-12-23 01:17:49,731 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 01:17:49,736 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 01:17:49,737 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 01:17:49,741 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 01:17:49,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 01:17:48" (1/3) ... [2020-12-23 01:17:49,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24736c1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:17:49, skipping insertion in model container [2020-12-23 01:17:49,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:17:49" (2/3) ... [2020-12-23 01:17:49,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24736c1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:17:49, skipping insertion in model container [2020-12-23 01:17:49,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:17:49" (3/3) ... [2020-12-23 01:17:49,746 INFO L111 eAbstractionObserver]: Analyzing ICFG eqn4f.c [2020-12-23 01:17:49,754 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 01:17:49,760 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 01:17:49,783 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 01:17:49,816 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 01:17:49,816 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 01:17:49,816 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 01:17:49,817 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 01:17:49,817 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 01:17:49,817 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 01:17:49,817 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 01:17:49,817 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 01:17:49,834 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-12-23 01:17:49,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 01:17:49,841 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:17:49,842 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:17:49,842 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:17:49,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:17:49,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1828546148, now seen corresponding path program 1 times [2020-12-23 01:17:49,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:17:49,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490093687] [2020-12-23 01:17:49,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:17:49,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:17:50,039 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 01:17:50,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490093687] [2020-12-23 01:17:50,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:17:50,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 01:17:50,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154250604] [2020-12-23 01:17:50,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 01:17:50,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:17:50,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 01:17:50,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 01:17:50,069 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2020-12-23 01:17:50,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:17:50,089 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions. [2020-12-23 01:17:50,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 01:17:50,091 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-12-23 01:17:50,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:17:50,102 INFO L225 Difference]: With dead ends: 38 [2020-12-23 01:17:50,103 INFO L226 Difference]: Without dead ends: 17 [2020-12-23 01:17:50,107 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 01:17:50,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-12-23 01:17:50,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-12-23 01:17:50,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-12-23 01:17:50,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2020-12-23 01:17:50,147 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2020-12-23 01:17:50,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:17:50,148 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2020-12-23 01:17:50,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 01:17:50,148 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2020-12-23 01:17:50,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 01:17:50,149 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:17:50,149 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:17:50,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 01:17:50,150 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:17:50,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:17:50,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1148487778, now seen corresponding path program 1 times [2020-12-23 01:17:50,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:17:50,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368513246] [2020-12-23 01:17:50,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:17:50,193 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:17:50,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [498751662] [2020-12-23 01:17:50,194 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 01:17:50,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 01:17:50,330 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 01:17:50,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 01:17:50,363 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 01:17:50,418 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-23 01:17:50,418 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 01:17:50,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-23 01:17:50,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 01:17:50 BoogieIcfgContainer [2020-12-23 01:17:50,702 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 01:17:50,703 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 01:17:50,703 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 01:17:50,704 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 01:17:50,704 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:17:49" (3/4) ... [2020-12-23 01:17:50,707 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-23 01:17:50,864 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/array-fpi/eqn4f.c-witness.graphml [2020-12-23 01:17:50,864 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 01:17:50,870 INFO L168 Benchmark]: Toolchain (without parser) took 2066.16 ms. Allocated memory is still 158.3 MB. Free memory was 133.5 MB in the beginning and 104.5 MB in the end (delta: 29.0 MB). Peak memory consumption was 28.5 MB. Max. memory is 8.0 GB. [2020-12-23 01:17:50,871 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 158.3 MB. Free memory was 130.6 MB in the beginning and 130.4 MB in the end (delta: 115.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 01:17:50,873 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.42 ms. Allocated memory is still 158.3 MB. Free memory was 133.3 MB in the beginning and 123.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-23 01:17:50,873 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.81 ms. Allocated memory is still 158.3 MB. Free memory was 123.1 MB in the beginning and 121.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 01:17:50,877 INFO L168 Benchmark]: Boogie Preprocessor took 30.91 ms. Allocated memory is still 158.3 MB. Free memory was 121.6 MB in the beginning and 120.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 01:17:50,878 INFO L168 Benchmark]: RCFGBuilder took 572.12 ms. Allocated memory is still 158.3 MB. Free memory was 120.4 MB in the beginning and 138.4 MB in the end (delta: -18.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 8.0 GB. [2020-12-23 01:17:50,882 INFO L168 Benchmark]: TraceAbstraction took 965.77 ms. Allocated memory is still 158.3 MB. Free memory was 138.0 MB in the beginning and 107.1 MB in the end (delta: 31.0 MB). Peak memory consumption was 31.5 MB. Max. memory is 8.0 GB. [2020-12-23 01:17:50,882 INFO L168 Benchmark]: Witness Printer took 162.45 ms. Allocated memory is still 158.3 MB. Free memory was 107.1 MB in the beginning and 104.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 01:17:50,889 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 158.3 MB. Free memory was 130.6 MB in the beginning and 130.4 MB in the end (delta: 115.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 274.42 ms. Allocated memory is still 158.3 MB. Free memory was 133.3 MB in the beginning and 123.3 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 45.81 ms. Allocated memory is still 158.3 MB. Free memory was 123.1 MB in the beginning and 121.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 30.91 ms. Allocated memory is still 158.3 MB. Free memory was 121.6 MB in the beginning and 120.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 572.12 ms. Allocated memory is still 158.3 MB. Free memory was 120.4 MB in the beginning and 138.4 MB in the end (delta: -18.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 965.77 ms. Allocated memory is still 158.3 MB. Free memory was 138.0 MB in the beginning and 107.1 MB in the end (delta: 31.0 MB). Peak memory consumption was 31.5 MB. Max. memory is 8.0 GB. * Witness Printer took 162.45 ms. Allocated memory is still 158.3 MB. Free memory was 107.1 MB in the beginning and 104.5 MB in the end (delta: 2.6 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] a[0] = 8 [L32] b[0] = 0 [L33] i=1 VAL [N=1] [L33] COND FALSE !(i