/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/res1of.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 01:26:19,478 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 01:26:19,483 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 01:26:19,525 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 01:26:19,526 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 01:26:19,528 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 01:26:19,530 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 01:26:19,533 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 01:26:19,536 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 01:26:19,538 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 01:26:19,540 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 01:26:19,542 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 01:26:19,542 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 01:26:19,544 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 01:26:19,546 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 01:26:19,547 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 01:26:19,568 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 01:26:19,570 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 01:26:19,573 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 01:26:19,577 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 01:26:19,580 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 01:26:19,583 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 01:26:19,585 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 01:26:19,587 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 01:26:19,592 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 01:26:19,607 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 01:26:19,608 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 01:26:19,609 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 01:26:19,612 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 01:26:19,676 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 01:26:19,677 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 01:26:19,683 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 01:26:19,683 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 01:26:19,684 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 01:26:19,684 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 01:26:19,684 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 01:26:19,685 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 01:26:19,685 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 01:26:19,685 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 01:26:19,687 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 01:26:19,687 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 01:26:19,687 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 01:26:19,688 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 01:26:19,688 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 01:26:19,688 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 01:26:19,688 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 01:26:19,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 01:26:19,689 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 01:26:19,689 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 01:26:19,689 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 01:26:19,690 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 01:26:19,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 01:26:19,690 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 01:26:19,690 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 01:26:19,690 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 01:26:20,312 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 01:26:20,348 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 01:26:20,353 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 01:26:20,355 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 01:26:20,357 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 01:26:20,359 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/res1of.c [2020-12-23 01:26:20,482 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/278b37e08/b1bae516d8564c89b2cd24d48def5397/FLAG7a3860775 [2020-12-23 01:26:21,496 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 01:26:21,499 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-fpi/res1of.c [2020-12-23 01:26:21,516 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/278b37e08/b1bae516d8564c89b2cd24d48def5397/FLAG7a3860775 [2020-12-23 01:26:21,727 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/278b37e08/b1bae516d8564c89b2cd24d48def5397 [2020-12-23 01:26:21,733 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 01:26:21,736 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 01:26:21,739 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 01:26:21,739 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 01:26:21,746 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 01:26:21,748 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:26:21" (1/1) ... [2020-12-23 01:26:21,750 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b647b89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:26:21, skipping insertion in model container [2020-12-23 01:26:21,750 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:26:21" (1/1) ... [2020-12-23 01:26:21,765 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 01:26:21,789 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 01:26:22,041 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/res1of.c[589,602] left hand side expression in assignment: lhs: VariableLHS[~N~0,GLOBAL] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~sum~0,],[IntegerLiteral[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[4],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~sum~0,],[IntegerLiteral[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[4],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~sum~0,],[IntegerLiteral[0]]] [2020-12-23 01:26:22,083 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 01:26:22,101 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 01:26:22,125 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/res1of.c[589,602] left hand side expression in assignment: lhs: VariableLHS[~N~0,GLOBAL] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#sum~0,],base],StructAccessExpression[IdentifierExpression[~#sum~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[4],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[~#sum~0,],base],StructAccessExpression[IdentifierExpression[~#sum~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[4],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[~#sum~0,],base],StructAccessExpression[IdentifierExpression[~#sum~0,],offset]]] [2020-12-23 01:26:22,142 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 01:26:22,178 INFO L208 MainTranslator]: Completed translation [2020-12-23 01:26:22,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:26:22 WrapperNode [2020-12-23 01:26:22,180 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 01:26:22,185 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 01:26:22,186 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 01:26:22,187 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 01:26:22,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:26:22" (1/1) ... [2020-12-23 01:26:22,237 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:26:22" (1/1) ... [2020-12-23 01:26:22,305 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 01:26:22,310 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 01:26:22,310 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 01:26:22,311 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 01:26:22,326 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:26:22" (1/1) ... [2020-12-23 01:26:22,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:26:22" (1/1) ... [2020-12-23 01:26:22,339 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:26:22" (1/1) ... [2020-12-23 01:26:22,340 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:26:22" (1/1) ... [2020-12-23 01:26:22,368 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:26:22" (1/1) ... [2020-12-23 01:26:22,386 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:26:22" (1/1) ... [2020-12-23 01:26:22,391 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:26:22" (1/1) ... [2020-12-23 01:26:22,404 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 01:26:22,406 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 01:26:22,409 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 01:26:22,409 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 01:26:22,415 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:26:22" (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 01:26:22,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 01:26:22,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 01:26:22,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 01:26:22,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-23 01:26:22,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 01:26:22,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 01:26:22,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 01:26:22,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 01:26:23,344 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 01:26:23,345 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2020-12-23 01:26:23,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:26:23 BoogieIcfgContainer [2020-12-23 01:26:23,349 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 01:26:23,353 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 01:26:23,353 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 01:26:23,360 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 01:26:23,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 01:26:21" (1/3) ... [2020-12-23 01:26:23,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68501faf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:26:23, skipping insertion in model container [2020-12-23 01:26:23,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:26:22" (2/3) ... [2020-12-23 01:26:23,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68501faf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:26:23, skipping insertion in model container [2020-12-23 01:26:23,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:26:23" (3/3) ... [2020-12-23 01:26:23,369 INFO L111 eAbstractionObserver]: Analyzing ICFG res1of.c [2020-12-23 01:26:23,393 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 01:26:23,403 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 01:26:23,437 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 01:26:23,481 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 01:26:23,481 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 01:26:23,482 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 01:26:23,484 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 01:26:23,485 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 01:26:23,485 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 01:26:23,485 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 01:26:23,485 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 01:26:23,537 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-12-23 01:26:23,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 01:26:23,548 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:26:23,550 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:26:23,552 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:26:23,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:26:23,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1202110748, now seen corresponding path program 1 times [2020-12-23 01:26:23,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:26:23,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713701933] [2020-12-23 01:26:23,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:26:23,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:26:23,810 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 01:26:23,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713701933] [2020-12-23 01:26:23,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:26:23,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 01:26:23,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363428802] [2020-12-23 01:26:23,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 01:26:23,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:26:23,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 01:26:23,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 01:26:23,856 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2020-12-23 01:26:23,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:26:23,889 INFO L93 Difference]: Finished difference Result 44 states and 62 transitions. [2020-12-23 01:26:23,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 01:26:23,891 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2020-12-23 01:26:23,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:26:23,908 INFO L225 Difference]: With dead ends: 44 [2020-12-23 01:26:23,909 INFO L226 Difference]: Without dead ends: 20 [2020-12-23 01:26:23,914 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 01:26:23,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-23 01:26:23,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-12-23 01:26:23,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-23 01:26:23,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-12-23 01:26:23,967 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 15 [2020-12-23 01:26:23,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:26:23,967 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-12-23 01:26:23,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 01:26:23,968 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-12-23 01:26:23,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 01:26:23,969 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:26:23,970 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:26:23,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 01:26:23,971 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:26:23,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:26:23,972 INFO L82 PathProgramCache]: Analyzing trace with hash -944124056, now seen corresponding path program 1 times [2020-12-23 01:26:23,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:26:23,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122418536] [2020-12-23 01:26:23,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:26:24,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:26:24,136 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 01:26:24,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122418536] [2020-12-23 01:26:24,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:26:24,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 01:26:24,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185837719] [2020-12-23 01:26:24,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 01:26:24,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:26:24,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 01:26:24,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 01:26:24,144 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 4 states. [2020-12-23 01:26:24,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:26:24,272 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2020-12-23 01:26:24,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 01:26:24,273 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-12-23 01:26:24,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:26:24,274 INFO L225 Difference]: With dead ends: 41 [2020-12-23 01:26:24,275 INFO L226 Difference]: Without dead ends: 28 [2020-12-23 01:26:24,279 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 01:26:24,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-23 01:26:24,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2020-12-23 01:26:24,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-12-23 01:26:24,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-12-23 01:26:24,289 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 15 [2020-12-23 01:26:24,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:26:24,290 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-12-23 01:26:24,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 01:26:24,290 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-12-23 01:26:24,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 01:26:24,291 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:26:24,291 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, 1, 1, 1] [2020-12-23 01:26:24,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 01:26:24,292 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:26:24,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:26:24,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1401448688, now seen corresponding path program 1 times [2020-12-23 01:26:24,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:26:24,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693431755] [2020-12-23 01:26:24,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:26:24,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 01:26:24,445 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 01:26:24,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 01:26:24,507 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 01:26:24,566 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-23 01:26:24,566 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 01:26:24,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 01:26:24,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 01:26:24 BoogieIcfgContainer [2020-12-23 01:26:24,630 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 01:26:24,631 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 01:26:24,631 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 01:26:24,632 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 01:26:24,633 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:26:23" (3/4) ... [2020-12-23 01:26:24,637 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-23 01:26:24,777 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/array-fpi/res1of.c-witness.graphml [2020-12-23 01:26:24,777 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 01:26:24,780 INFO L168 Benchmark]: Toolchain (without parser) took 3043.15 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 84.9 MB in the end (delta: 41.3 MB). Peak memory consumption was 42.0 MB. Max. memory is 8.0 GB. [2020-12-23 01:26:24,781 INFO L168 Benchmark]: CDTParser took 0.41 ms. Allocated memory is still 151.0 MB. Free memory is still 123.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 01:26:24,784 INFO L168 Benchmark]: CACSL2BoogieTranslator took 442.71 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 115.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-23 01:26:24,785 INFO L168 Benchmark]: Boogie Procedure Inliner took 124.35 ms. Allocated memory is still 151.0 MB. Free memory was 115.1 MB in the beginning and 113.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 01:26:24,786 INFO L168 Benchmark]: Boogie Preprocessor took 94.34 ms. Allocated memory is still 151.0 MB. Free memory was 113.6 MB in the beginning and 112.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 01:26:24,787 INFO L168 Benchmark]: RCFGBuilder took 943.81 ms. Allocated memory is still 151.0 MB. Free memory was 112.2 MB in the beginning and 127.4 MB in the end (delta: -15.2 MB). Peak memory consumption was 13.7 MB. Max. memory is 8.0 GB. [2020-12-23 01:26:24,793 INFO L168 Benchmark]: TraceAbstraction took 1277.44 ms. Allocated memory is still 151.0 MB. Free memory was 126.8 MB in the beginning and 88.0 MB in the end (delta: 38.8 MB). Peak memory consumption was 38.8 MB. Max. memory is 8.0 GB. [2020-12-23 01:26:24,794 INFO L168 Benchmark]: Witness Printer took 145.92 ms. Allocated memory is still 151.0 MB. Free memory was 88.0 MB in the beginning and 84.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-23 01:26:24,803 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41 ms. Allocated memory is still 151.0 MB. Free memory is still 123.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 442.71 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 115.1 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 124.35 ms. Allocated memory is still 151.0 MB. Free memory was 115.1 MB in the beginning and 113.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 94.34 ms. Allocated memory is still 151.0 MB. Free memory was 113.6 MB in the beginning and 112.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 943.81 ms. Allocated memory is still 151.0 MB. Free memory was 112.2 MB in the beginning and 127.4 MB in the end (delta: -15.2 MB). Peak memory consumption was 13.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1277.44 ms. Allocated memory is still 151.0 MB. Free memory was 126.8 MB in the beginning and 88.0 MB in the end (delta: 38.8 MB). Peak memory consumption was 38.8 MB. Max. memory is 8.0 GB. * Witness Printer took 145.92 ms. Allocated memory is still 151.0 MB. Free memory was 88.0 MB in the beginning and 84.9 MB in the end (delta: 3.1 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 sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L30] int *b = malloc(sizeof(int)*N); [L32] sum[0] = 0 [L33] i=0 VAL [N=1] [L33] COND TRUE i