/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=LOWLEXORDER --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 21:48:53,812 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:48:53,816 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:48:53,857 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:48:53,858 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:48:53,868 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:48:53,871 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:48:53,875 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:48:53,877 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:48:53,880 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:48:53,881 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:48:53,882 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:48:53,883 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:48:53,886 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:48:53,888 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:48:53,890 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:48:53,892 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:48:53,893 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:48:53,895 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:48:53,904 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:48:53,907 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:48:53,910 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:48:53,911 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:48:53,912 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:48:53,915 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:48:53,915 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:48:53,915 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:48:53,918 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:48:53,918 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:48:53,920 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:48:53,921 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:48:53,922 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:48:53,923 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:48:53,923 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:48:53,925 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:48:53,925 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:48:53,926 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:48:53,926 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:48:53,926 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:48:53,927 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:48:53,929 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:48:53,930 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 21:48:53,979 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:48:53,979 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:48:53,982 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:48:53,982 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:48:53,982 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:48:53,982 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:48:53,983 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:48:53,983 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:48:53,983 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:48:53,983 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:48:53,984 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:48:53,985 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:48:53,985 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:48:53,985 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:48:53,986 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:48:53,986 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:48:53,986 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:48:53,986 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:48:53,987 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:48:53,987 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:48:53,987 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:48:53,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:48:53,987 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:48:53,988 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:48:53,988 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:48:53,988 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:48:53,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:48:53,988 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:48:53,989 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:48:53,989 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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:48:54,479 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:48:54,504 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:48:54,508 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:48:54,511 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:48:54,511 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:48:54,512 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs4f.c [2020-09-24 21:48:54,604 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/905f5e009/181c3d9ba5ee4b03915a1c886be840fc/FLAG3d91390fe [2020-09-24 21:48:55,122 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:48:55,123 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/brs4f.c [2020-09-24 21:48:55,132 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/905f5e009/181c3d9ba5ee4b03915a1c886be840fc/FLAG3d91390fe [2020-09-24 21:48:55,468 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/905f5e009/181c3d9ba5ee4b03915a1c886be840fc [2020-09-24 21:48:55,480 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:48:55,487 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:48:55,488 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:48:55,488 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:48:55,494 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:48:55,495 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:48:55" (1/1) ... [2020-09-24 21:48:55,500 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1848833b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:48:55, skipping insertion in model container [2020-09-24 21:48:55,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:48:55" (1/1) ... [2020-09-24 21:48:55,510 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:48:55,537 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:48:55,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:48:55,813 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:48:55,855 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:48:55,879 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:48:55,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:48:55 WrapperNode [2020-09-24 21:48:55,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:48:55,882 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:48:55,882 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:48:55,882 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:48:55,970 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:48:55" (1/1) ... [2020-09-24 21:48:55,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:48:55" (1/1) ... [2020-09-24 21:48:55,986 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:48:55" (1/1) ... [2020-09-24 21:48:55,986 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:48:55" (1/1) ... [2020-09-24 21:48:56,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:48:55" (1/1) ... [2020-09-24 21:48:56,014 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:48:55" (1/1) ... [2020-09-24 21:48:56,020 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:48:55" (1/1) ... [2020-09-24 21:48:56,024 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:48:56,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:48:56,025 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:48:56,025 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:48:56,026 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:48:55" (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 21:48:56,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:48:56,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:48:56,103 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 21:48:56,103 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 21:48:56,103 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:48:56,104 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:48:56,104 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 21:48:56,104 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 21:48:56,104 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 21:48:56,104 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:48:56,105 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 21:48:56,105 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:48:56,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 21:48:56,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 21:48:56,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 21:48:56,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 21:48:56,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 21:48:56,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:48:56,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:48:56,452 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:48:56,452 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-24 21:48:56,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:48:56 BoogieIcfgContainer [2020-09-24 21:48:56,458 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:48:56,459 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:48:56,459 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:48:56,463 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:48:56,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:48:55" (1/3) ... [2020-09-24 21:48:56,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58e0ab41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:48:56, skipping insertion in model container [2020-09-24 21:48:56,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:48:55" (2/3) ... [2020-09-24 21:48:56,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58e0ab41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:48:56, skipping insertion in model container [2020-09-24 21:48:56,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:48:56" (3/3) ... [2020-09-24 21:48:56,467 INFO L109 eAbstractionObserver]: Analyzing ICFG brs4f.c [2020-09-24 21:48:56,478 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:48:56,488 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:48:56,510 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:48:56,541 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:48:56,542 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:48:56,542 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:48:56,542 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:48:56,542 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:48:56,542 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:48:56,542 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:48:56,543 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:48:56,565 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2020-09-24 21:48:56,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-24 21:48:56,573 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:48:56,574 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 21:48:56,574 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:48:56,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:48:56,580 INFO L82 PathProgramCache]: Analyzing trace with hash 221259408, now seen corresponding path program 1 times [2020-09-24 21:48:56,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:48:56,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1167882532] [2020-09-24 21:48:56,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:48:56,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:48:56,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:48:56,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:48:57,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:48:57,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 21:48:57,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:48:57,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 411 [2020-09-24 21:48:57,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:48:57,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:48:57,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:48:57,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 21:48:57,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:48:57,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:48:57,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:48:57,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:48:57,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:48:57,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:48:57,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:48:57,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 21:48:57,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:48:57,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:48:57,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:48:57,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:48:57,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:48:57,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 21:48:57,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:48:57,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:48:57,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:48:57,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:48:57,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:48:57,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 21:48:57,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:48:57,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:48:57,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:48:57,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:48:57,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:48:57,305 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 21:48:57,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1167882532] [2020-09-24 21:48:57,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:48:57,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:48:57,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651219206] [2020-09-24 21:48:57,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:48:57,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:48:57,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:48:57,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:48:57,337 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 5 states. [2020-09-24 21:48:57,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:48:57,580 INFO L93 Difference]: Finished difference Result 107 states and 125 transitions. [2020-09-24 21:48:57,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 21:48:57,582 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-09-24 21:48:57,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:48:57,594 INFO L225 Difference]: With dead ends: 107 [2020-09-24 21:48:57,595 INFO L226 Difference]: Without dead ends: 49 [2020-09-24 21:48:57,599 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 21:48:57,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-24 21:48:57,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-09-24 21:48:57,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-09-24 21:48:57,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2020-09-24 21:48:57,655 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 30 [2020-09-24 21:48:57,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:48:57,656 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2020-09-24 21:48:57,656 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:48:57,656 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2020-09-24 21:48:57,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-24 21:48:57,658 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:48:57,658 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 21:48:57,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:48:57,659 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:48:57,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:48:57,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1707000309, now seen corresponding path program 1 times [2020-09-24 21:48:57,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:48:57,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [390159506] [2020-09-24 21:48:57,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:48:57,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 21:48:57,693 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 21:48:57,694 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 21:48:57,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:48:57,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 09:48:57 BoogieIcfgContainer [2020-09-24 21:48:57,723 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 21:48:57,727 INFO L168 Benchmark]: Toolchain (without parser) took 2243.13 ms. Allocated memory was 140.5 MB in the beginning and 201.9 MB in the end (delta: 61.3 MB). Free memory was 102.3 MB in the beginning and 92.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 71.7 MB. Max. memory is 7.1 GB. [2020-09-24 21:48:57,728 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.5 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-24 21:48:57,729 INFO L168 Benchmark]: CACSL2BoogieTranslator took 393.69 ms. Allocated memory is still 140.5 MB. Free memory was 101.7 MB in the beginning and 91.3 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-09-24 21:48:57,730 INFO L168 Benchmark]: Boogie Preprocessor took 142.07 ms. Allocated memory was 140.5 MB in the beginning and 201.9 MB in the end (delta: 61.3 MB). Free memory was 91.3 MB in the beginning and 179.2 MB in the end (delta: -87.9 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-09-24 21:48:57,731 INFO L168 Benchmark]: RCFGBuilder took 433.37 ms. Allocated memory is still 201.9 MB. Free memory was 179.2 MB in the beginning and 160.6 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. [2020-09-24 21:48:57,732 INFO L168 Benchmark]: TraceAbstraction took 1264.22 ms. Allocated memory is still 201.9 MB. Free memory was 160.6 MB in the beginning and 92.0 MB in the end (delta: 68.6 MB). Peak memory consumption was 68.6 MB. Max. memory is 7.1 GB. [2020-09-24 21:48:57,736 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.5 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 393.69 ms. Allocated memory is still 140.5 MB. Free memory was 101.7 MB in the beginning and 91.3 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 142.07 ms. Allocated memory was 140.5 MB in the beginning and 201.9 MB in the end (delta: 61.3 MB). Free memory was 91.3 MB in the beginning and 179.2 MB in the end (delta: -87.9 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 433.37 ms. Allocated memory is still 201.9 MB. Free memory was 179.2 MB in the beginning and 160.6 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1264.22 ms. Allocated memory is still 201.9 MB. Free memory was 160.6 MB in the beginning and 92.0 MB in the end (delta: 68.6 MB). Peak memory consumption was 68.6 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