/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/ncompf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:41:12,774 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:41:12,778 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:41:12,825 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:41:12,826 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:41:12,834 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:41:12,836 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:41:12,840 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:41:12,843 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:41:12,846 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:41:12,847 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:41:12,848 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:41:12,848 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:41:12,851 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:41:12,854 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:41:12,856 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:41:12,857 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:41:12,858 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:41:12,860 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:41:12,868 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:41:12,870 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:41:12,871 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:41:12,872 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:41:12,873 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:41:12,891 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:41:12,892 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:41:12,892 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:41:12,893 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:41:12,893 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:41:12,896 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:41:12,897 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:41:12,898 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:41:12,898 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:41:12,902 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:41:12,903 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:41:12,903 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:41:12,904 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:41:12,904 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:41:12,904 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:41:12,905 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:41:12,907 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:41:12,908 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 20:41:12,952 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:41:12,952 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:41:12,955 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:41:12,955 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:41:12,955 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:41:12,955 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:41:12,956 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:41:12,956 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:41:12,956 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:41:12,956 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:41:12,957 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:41:12,958 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:41:12,958 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:41:12,958 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:41:12,958 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:41:12,959 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:41:12,959 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:41:12,959 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:41:12,959 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:41:12,959 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:41:12,960 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:41:12,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:41:12,960 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:41:12,960 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:41:12,960 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:41:12,961 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:41:12,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:41:12,961 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:41:12,961 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:41:12,961 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 20:41:13,428 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:41:13,453 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:41:13,460 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:41:13,463 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:41:13,463 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:41:13,464 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ncompf.c [2020-09-24 20:41:13,543 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8435afba/aad7e07c510b42e58dcb27d07ee1678a/FLAG06943be83 [2020-09-24 20:41:14,083 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:41:14,084 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ncompf.c [2020-09-24 20:41:14,094 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8435afba/aad7e07c510b42e58dcb27d07ee1678a/FLAG06943be83 [2020-09-24 20:41:14,404 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8435afba/aad7e07c510b42e58dcb27d07ee1678a [2020-09-24 20:41:14,420 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:41:14,426 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:41:14,428 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:41:14,428 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:41:14,433 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:41:14,434 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:41:14" (1/1) ... [2020-09-24 20:41:14,439 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fcfef12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:14, skipping insertion in model container [2020-09-24 20:41:14,439 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:41:14" (1/1) ... [2020-09-24 20:41:14,450 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:41:14,477 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:41:14,769 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:41:14,782 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:41:14,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:41:14,826 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:41:14,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:14 WrapperNode [2020-09-24 20:41:14,827 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:41:14,828 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:41:14,828 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:41:14,828 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:41:14,927 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:14" (1/1) ... [2020-09-24 20:41:14,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:14" (1/1) ... [2020-09-24 20:41:14,939 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:14" (1/1) ... [2020-09-24 20:41:14,939 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:14" (1/1) ... [2020-09-24 20:41:14,949 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:14" (1/1) ... [2020-09-24 20:41:14,956 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:14" (1/1) ... [2020-09-24 20:41:14,958 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:14" (1/1) ... [2020-09-24 20:41:14,961 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:41:14,961 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:41:14,962 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:41:14,962 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:41:14,963 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:14" (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 20:41:15,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:41:15,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:41:15,036 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 20:41:15,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 20:41:15,036 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:41:15,037 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:41:15,037 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 20:41:15,037 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 20:41:15,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 20:41:15,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:41:15,038 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 20:41:15,038 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:41:15,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 20:41:15,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 20:41:15,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 20:41:15,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:41:15,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:41:15,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 20:41:15,376 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:41:15,377 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-24 20:41:15,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:41:15 BoogieIcfgContainer [2020-09-24 20:41:15,383 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:41:15,385 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:41:15,385 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:41:15,389 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:41:15,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:41:14" (1/3) ... [2020-09-24 20:41:15,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc43f69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:41:15, skipping insertion in model container [2020-09-24 20:41:15,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:14" (2/3) ... [2020-09-24 20:41:15,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc43f69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:41:15, skipping insertion in model container [2020-09-24 20:41:15,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:41:15" (3/3) ... [2020-09-24 20:41:15,393 INFO L109 eAbstractionObserver]: Analyzing ICFG ncompf.c [2020-09-24 20:41:15,405 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:41:15,416 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:41:15,451 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:41:15,487 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:41:15,487 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:41:15,487 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:41:15,487 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:41:15,487 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:41:15,488 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:41:15,488 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:41:15,488 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:41:15,514 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-09-24 20:41:15,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-24 20:41:15,522 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:41:15,523 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] [2020-09-24 20:41:15,524 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:41:15,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:41:15,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1653700080, now seen corresponding path program 1 times [2020-09-24 20:41:15,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:41:15,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [204218323] [2020-09-24 20:41:15,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:41:15,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:41:15,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:15,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:16,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [204218323] [2020-09-24 20:41:16,014 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2020-09-24 20:41:16,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:41:16,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-09-24 20:41:16,015 ERROR L206 FreeRefinementEngine]: Strategy FIXED_PREFERENCES failed to provide any proof altough trace is infeasible [2020-09-24 20:41:16,016 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 20:41:16,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:41:16,055 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-24 20:41:16,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 08:41:16 BoogieIcfgContainer [2020-09-24 20:41:16,056 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 20:41:16,059 INFO L168 Benchmark]: Toolchain (without parser) took 1636.16 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 101.9 MB in the beginning and 135.0 MB in the end (delta: -33.1 MB). Peak memory consumption was 30.3 MB. Max. memory is 7.1 GB. [2020-09-24 20:41:16,060 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 20:41:16,061 INFO L168 Benchmark]: CACSL2BoogieTranslator took 399.54 ms. Allocated memory is still 138.9 MB. Free memory was 101.2 MB in the beginning and 90.7 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-09-24 20:41:16,062 INFO L168 Benchmark]: Boogie Preprocessor took 133.59 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 90.7 MB in the beginning and 179.6 MB in the end (delta: -88.9 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-09-24 20:41:16,063 INFO L168 Benchmark]: RCFGBuilder took 421.94 ms. Allocated memory is still 202.4 MB. Free memory was 179.6 MB in the beginning and 157.9 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-09-24 20:41:16,065 INFO L168 Benchmark]: TraceAbstraction took 671.20 ms. Allocated memory is still 202.4 MB. Free memory was 157.3 MB in the beginning and 135.0 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-09-24 20:41:16,069 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 399.54 ms. Allocated memory is still 138.9 MB. Free memory was 101.2 MB in the beginning and 90.7 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 133.59 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 90.7 MB in the beginning and 179.6 MB in the end (delta: -88.9 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 421.94 ms. Allocated memory is still 202.4 MB. Free memory was 179.6 MB in the beginning and 157.9 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 671.20 ms. Allocated memory is still 202.4 MB. Free memory was 157.3 MB in the beginning and 135.0 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible 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 *a = malloc(sizeof(long long)*N); [L27] long long *b = malloc(sizeof(long long)*N); [L28] long long *c = malloc(sizeof(long long)*N); [L30] a[0] = 6 [L31] b[0] = 1 [L32] c[0] = 0 [L33] i=1 [L33] COND FALSE !(i