/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/brs4f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:40:48,364 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:40:48,368 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:40:48,395 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:40:48,395 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:40:48,396 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:40:48,398 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:40:48,400 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:40:48,402 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:40:48,403 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:40:48,404 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:40:48,406 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:40:48,406 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:40:48,408 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:40:48,409 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:40:48,410 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:40:48,411 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:40:48,412 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:40:48,414 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:40:48,416 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:40:48,418 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:40:48,419 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:40:48,420 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:40:48,422 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:40:48,424 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:40:48,425 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:40:48,425 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:40:48,426 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:40:48,429 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:40:48,430 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:40:48,431 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:40:48,431 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:40:48,432 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:40:48,433 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:40:48,434 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:40:48,435 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:40:48,436 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:40:48,436 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:40:48,436 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:40:48,437 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:40:48,438 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:40:48,439 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 20:40:48,468 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:40:48,469 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:40:48,471 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:40:48,473 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:40:48,473 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:40:48,473 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:40:48,473 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:40:48,474 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:40:48,474 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:40:48,474 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:40:48,474 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:40:48,475 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:40:48,475 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:40:48,475 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:40:48,475 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:40:48,475 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:40:48,476 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:40:48,476 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:40:48,476 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:40:48,476 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:40:48,476 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:40:48,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:40:48,479 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:40:48,479 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:40:48,479 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:40:48,479 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:40:48,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:40:48,480 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:40:48,480 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:40:48,480 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; [2020-09-24 20:40:48,976 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:40:48,994 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:40:48,998 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:40:49,000 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:40:49,001 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:40:49,002 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs4f.c [2020-09-24 20:40:49,084 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a0faa294/5ab149790a6f487a91eb218f1e27a0df/FLAGd14ff3e87 [2020-09-24 20:40:49,631 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:40:49,632 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/brs4f.c [2020-09-24 20:40:49,641 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a0faa294/5ab149790a6f487a91eb218f1e27a0df/FLAGd14ff3e87 [2020-09-24 20:40:49,995 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a0faa294/5ab149790a6f487a91eb218f1e27a0df [2020-09-24 20:40:50,008 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:40:50,014 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:40:50,015 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:40:50,015 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:40:50,019 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:40:50,021 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:40:49" (1/1) ... [2020-09-24 20:40:50,025 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58419e08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:40:50, skipping insertion in model container [2020-09-24 20:40:50,026 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:40:49" (1/1) ... [2020-09-24 20:40:50,035 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:40:50,068 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:40:50,311 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:40:50,324 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:40:50,349 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:40:50,368 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:40:50,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:40:50 WrapperNode [2020-09-24 20:40:50,369 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:40:50,370 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:40:50,370 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:40:50,370 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:40:50,458 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:40:50" (1/1) ... [2020-09-24 20:40:50,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:40:50" (1/1) ... [2020-09-24 20:40:50,468 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:40:50" (1/1) ... [2020-09-24 20:40:50,469 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:40:50" (1/1) ... [2020-09-24 20:40:50,478 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:40:50" (1/1) ... [2020-09-24 20:40:50,485 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:40:50" (1/1) ... [2020-09-24 20:40:50,487 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:40:50" (1/1) ... [2020-09-24 20:40:50,489 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:40:50,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:40:50,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:40:50,490 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:40:50,492 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:40:50" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-24 20:40:50,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:40:50,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:40:50,568 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 20:40:50,568 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 20:40:50,569 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:40:50,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:40:50,569 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 20:40:50,569 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 20:40:50,570 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 20:40:50,570 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:40:50,570 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 20:40:50,570 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:40:50,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 20:40:50,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 20:40:50,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 20:40:50,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 20:40:50,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 20:40:50,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:40:50,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:40:50,949 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:40:50,950 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-24 20:40:50,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:40:50 BoogieIcfgContainer [2020-09-24 20:40:50,956 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:40:50,957 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:40:50,957 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:40:50,961 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:40:50,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:40:49" (1/3) ... [2020-09-24 20:40:50,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e71069b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:40:50, skipping insertion in model container [2020-09-24 20:40:50,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:40:50" (2/3) ... [2020-09-24 20:40:50,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e71069b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:40:50, skipping insertion in model container [2020-09-24 20:40:50,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:40:50" (3/3) ... [2020-09-24 20:40:50,966 INFO L109 eAbstractionObserver]: Analyzing ICFG brs4f.c [2020-09-24 20:40:50,978 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:40:50,989 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:40:51,011 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:40:51,042 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:40:51,042 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:40:51,042 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:40:51,042 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:40:51,043 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:40:51,043 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:40:51,043 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:40:51,043 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:40:51,066 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2020-09-24 20:40:51,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-24 20:40:51,075 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:40:51,076 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, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:40:51,076 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:40:51,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:40:51,083 INFO L82 PathProgramCache]: Analyzing trace with hash 221259408, now seen corresponding path program 1 times [2020-09-24 20:40:51,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:40:51,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1461743854] [2020-09-24 20:40:51,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:40:51,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:40:51,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:40:51,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:40:51,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:40:51,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 20:40:51,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:40:51,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 434 [2020-09-24 20:40:51,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:40:51,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:40:51,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 20:40:51,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 20:40:51,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 20:40:51,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:40:51,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:40:51,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:40:51,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:40:51,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:40:51,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:40:51,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 20:40:51,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:40:51,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:40:51,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:40:51,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:40:51,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:40:51,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:40:51,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:40:51,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:40:51,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:40:51,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:40:51,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:40:51,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 20:40:51,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:40:51,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:40:51,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:40:51,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:40:51,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:40:51,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:40:51,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1461743854] [2020-09-24 20:40:51,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:40:51,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:40:51,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013819782] [2020-09-24 20:40:51,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:40:51,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:40:51,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:40:51,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:40:51,886 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 5 states. [2020-09-24 20:40:52,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:40:52,191 INFO L93 Difference]: Finished difference Result 107 states and 125 transitions. [2020-09-24 20:40:52,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 20:40:52,195 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-09-24 20:40:52,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:40:52,209 INFO L225 Difference]: With dead ends: 107 [2020-09-24 20:40:52,209 INFO L226 Difference]: Without dead ends: 49 [2020-09-24 20:40:52,215 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 20:40:52,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-24 20:40:52,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-09-24 20:40:52,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-09-24 20:40:52,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2020-09-24 20:40:52,280 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 30 [2020-09-24 20:40:52,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:40:52,281 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2020-09-24 20:40:52,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:40:52,282 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2020-09-24 20:40:52,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-24 20:40:52,284 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:40:52,284 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:40:52,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:40:52,285 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:40:52,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:40:52,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1707000309, now seen corresponding path program 1 times [2020-09-24 20:40:52,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:40:52,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690118404] [2020-09-24 20:40:52,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:40:52,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 20:40:52,325 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 20:40:52,326 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 20:40:52,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:40:52,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 08:40:52 BoogieIcfgContainer [2020-09-24 20:40:52,358 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 20:40:52,362 INFO L168 Benchmark]: Toolchain (without parser) took 2349.76 ms. Allocated memory was 138.4 MB in the beginning and 200.3 MB in the end (delta: 61.9 MB). Free memory was 101.7 MB in the beginning and 90.0 MB in the end (delta: 11.7 MB). Peak memory consumption was 73.5 MB. Max. memory is 7.1 GB. [2020-09-24 20:40:52,363 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 20:40:52,364 INFO L168 Benchmark]: CACSL2BoogieTranslator took 354.59 ms. Allocated memory is still 138.4 MB. Free memory was 101.1 MB in the beginning and 90.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-09-24 20:40:52,365 INFO L168 Benchmark]: Boogie Preprocessor took 119.88 ms. Allocated memory was 138.4 MB in the beginning and 200.3 MB in the end (delta: 61.9 MB). Free memory was 90.6 MB in the beginning and 177.5 MB in the end (delta: -87.0 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-09-24 20:40:52,366 INFO L168 Benchmark]: RCFGBuilder took 465.89 ms. Allocated memory is still 200.3 MB. Free memory was 177.5 MB in the beginning and 159.0 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 7.1 GB. [2020-09-24 20:40:52,367 INFO L168 Benchmark]: TraceAbstraction took 1400.82 ms. Allocated memory is still 200.3 MB. Free memory was 158.3 MB in the beginning and 90.0 MB in the end (delta: 68.3 MB). Peak memory consumption was 68.3 MB. Max. memory is 7.1 GB. [2020-09-24 20:40:52,371 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 354.59 ms. Allocated memory is still 138.4 MB. Free memory was 101.1 MB in the beginning and 90.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.88 ms. Allocated memory was 138.4 MB in the beginning and 200.3 MB in the end (delta: 61.9 MB). Free memory was 90.6 MB in the beginning and 177.5 MB in the end (delta: -87.0 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 465.89 ms. Allocated memory is still 200.3 MB. Free memory was 177.5 MB in the beginning and 159.0 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1400.82 ms. Allocated memory is still 200.3 MB. Free memory was 158.3 MB in the beginning and 90.0 MB in the end (delta: 68.3 MB). Peak memory consumption was 68.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] i=0 [L29] COND TRUE i