/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 --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --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/brs5f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 06:23:26,865 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 06:23:26,869 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 06:23:26,907 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 06:23:26,908 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 06:23:26,911 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 06:23:26,912 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 06:23:26,916 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 06:23:26,919 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 06:23:26,920 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 06:23:26,921 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 06:23:26,922 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 06:23:26,922 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 06:23:26,923 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 06:23:26,924 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 06:23:26,925 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 06:23:26,925 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 06:23:26,926 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 06:23:26,928 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 06:23:26,929 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 06:23:26,931 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 06:23:26,931 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 06:23:26,932 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 06:23:26,933 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 06:23:26,936 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 06:23:26,936 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 06:23:26,936 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 06:23:26,937 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 06:23:26,937 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 06:23:26,938 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 06:23:26,938 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 06:23:26,939 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 06:23:26,940 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 06:23:26,940 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 06:23:26,941 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 06:23:26,941 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 06:23:26,942 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 06:23:26,942 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 06:23:26,942 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 06:23:26,943 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 06:23:26,944 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 06:23:26,945 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 [2020-08-22 06:23:26,967 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 06:23:26,967 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 06:23:26,968 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 06:23:26,968 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 06:23:26,968 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 06:23:26,969 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 06:23:26,969 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 06:23:26,969 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 06:23:26,969 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 06:23:26,969 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 06:23:26,970 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 06:23:26,970 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 06:23:26,970 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 06:23:26,970 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 06:23:26,970 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 06:23:26,971 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 06:23:26,971 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 06:23:26,971 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 06:23:26,971 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 06:23:26,971 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 06:23:26,972 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 06:23:26,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 06:23:26,972 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 06:23:26,972 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 06:23:26,972 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 06:23:26,973 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 06:23:26,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 06:23:26,973 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 06:23:26,973 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 06:23:26,973 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.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-08-22 06:23:27,291 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 06:23:27,312 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 06:23:27,317 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 06:23:27,318 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 06:23:27,320 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 06:23:27,321 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs5f.c [2020-08-22 06:23:27,397 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6cfcc9ab4/01e840806fd54417885fb4b99ced2218/FLAG2c15395a1 [2020-08-22 06:23:27,862 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 06:23:27,863 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/brs5f.c [2020-08-22 06:23:27,868 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6cfcc9ab4/01e840806fd54417885fb4b99ced2218/FLAG2c15395a1 [2020-08-22 06:23:28,216 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6cfcc9ab4/01e840806fd54417885fb4b99ced2218 [2020-08-22 06:23:28,227 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 06:23:28,229 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 06:23:28,230 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 06:23:28,231 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 06:23:28,234 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 06:23:28,235 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:23:28" (1/1) ... [2020-08-22 06:23:28,238 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@434f45a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:23:28, skipping insertion in model container [2020-08-22 06:23:28,239 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:23:28" (1/1) ... [2020-08-22 06:23:28,247 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 06:23:28,265 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 06:23:28,448 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:23:28,458 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 06:23:28,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:23:28,496 INFO L208 MainTranslator]: Completed translation [2020-08-22 06:23:28,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:23:28 WrapperNode [2020-08-22 06:23:28,497 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 06:23:28,498 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 06:23:28,498 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 06:23:28,498 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 06:23:28,596 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:23:28" (1/1) ... [2020-08-22 06:23:28,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:23:28" (1/1) ... [2020-08-22 06:23:28,604 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:23:28" (1/1) ... [2020-08-22 06:23:28,605 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:23:28" (1/1) ... [2020-08-22 06:23:28,613 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:23:28" (1/1) ... [2020-08-22 06:23:28,618 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:23:28" (1/1) ... [2020-08-22 06:23:28,620 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:23:28" (1/1) ... [2020-08-22 06:23:28,622 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 06:23:28,622 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 06:23:28,623 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 06:23:28,623 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 06:23:28,624 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:23:28" (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 [2020-08-22 06:23:28,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 06:23:28,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 06:23:28,701 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 06:23:28,701 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 06:23:28,701 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 06:23:28,701 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 06:23:28,701 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 06:23:28,701 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 06:23:28,702 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 06:23:28,702 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 06:23:28,702 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 06:23:28,702 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 06:23:28,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 06:23:28,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 06:23:28,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 06:23:28,703 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 06:23:28,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 06:23:28,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 06:23:28,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 06:23:29,024 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 06:23:29,025 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-08-22 06:23:29,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:23:29 BoogieIcfgContainer [2020-08-22 06:23:29,029 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 06:23:29,030 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 06:23:29,030 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 06:23:29,033 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 06:23:29,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:23:28" (1/3) ... [2020-08-22 06:23:29,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74602d4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:23:29, skipping insertion in model container [2020-08-22 06:23:29,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:23:28" (2/3) ... [2020-08-22 06:23:29,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74602d4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:23:29, skipping insertion in model container [2020-08-22 06:23:29,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:23:29" (3/3) ... [2020-08-22 06:23:29,037 INFO L109 eAbstractionObserver]: Analyzing ICFG brs5f.c [2020-08-22 06:23:29,047 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 06:23:29,054 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 06:23:29,068 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 06:23:29,088 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 06:23:29,088 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 06:23:29,088 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 06:23:29,088 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 06:23:29,088 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 06:23:29,088 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 06:23:29,089 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 06:23:29,089 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 06:23:29,106 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-08-22 06:23:29,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-22 06:23:29,112 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:23:29,113 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] [2020-08-22 06:23:29,113 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:23:29,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:23:29,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1824292310, now seen corresponding path program 1 times [2020-08-22 06:23:29,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:23:29,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846890848] [2020-08-22 06:23:29,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:23:29,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:23:29,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:23:29,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:23:29,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 06:23:29,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:23:29,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:23:29,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846890848] [2020-08-22 06:23:29,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:23:29,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 06:23:29,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891983795] [2020-08-22 06:23:29,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 06:23:29,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:23:29,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 06:23:29,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 06:23:29,363 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2020-08-22 06:23:29,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:23:29,483 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2020-08-22 06:23:29,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 06:23:29,485 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-08-22 06:23:29,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:23:29,495 INFO L225 Difference]: With dead ends: 56 [2020-08-22 06:23:29,496 INFO L226 Difference]: Without dead ends: 26 [2020-08-22 06:23:29,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 06:23:29,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-08-22 06:23:29,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-08-22 06:23:29,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-08-22 06:23:29,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2020-08-22 06:23:29,544 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 21 [2020-08-22 06:23:29,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:23:29,544 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2020-08-22 06:23:29,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 06:23:29,545 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-08-22 06:23:29,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-22 06:23:29,546 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:23:29,546 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] [2020-08-22 06:23:29,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 06:23:29,547 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:23:29,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:23:29,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1767537087, now seen corresponding path program 1 times [2020-08-22 06:23:29,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:23:29,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1421430032] [2020-08-22 06:23:29,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:23:29,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:23:29,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:23:29,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:23:29,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 06:23:29,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:23:29,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:23:29,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1421430032] [2020-08-22 06:23:29,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:23:29,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 06:23:29,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530301761] [2020-08-22 06:23:29,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 06:23:29,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:23:29,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 06:23:29,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 06:23:29,735 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 5 states. [2020-08-22 06:23:29,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:23:29,874 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2020-08-22 06:23:29,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 06:23:29,875 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-08-22 06:23:29,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:23:29,876 INFO L225 Difference]: With dead ends: 45 [2020-08-22 06:23:29,877 INFO L226 Difference]: Without dead ends: 32 [2020-08-22 06:23:29,878 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-22 06:23:29,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-08-22 06:23:29,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-08-22 06:23:29,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-22 06:23:29,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-08-22 06:23:29,886 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 21 [2020-08-22 06:23:29,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:23:29,887 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-08-22 06:23:29,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 06:23:29,887 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-08-22 06:23:29,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-22 06:23:29,888 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:23:29,888 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] [2020-08-22 06:23:29,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 06:23:29,889 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:23:29,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:23:29,889 INFO L82 PathProgramCache]: Analyzing trace with hash -395878216, now seen corresponding path program 1 times [2020-08-22 06:23:29,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:23:29,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244394271] [2020-08-22 06:23:29,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:23:29,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 06:23:29,930 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 06:23:29,930 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 06:23:29,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 06:23:29,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:23:29 BoogieIcfgContainer [2020-08-22 06:23:29,951 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 06:23:29,954 INFO L168 Benchmark]: Toolchain (without parser) took 1724.38 ms. Allocated memory was 141.6 MB in the beginning and 203.9 MB in the end (delta: 62.4 MB). Free memory was 105.0 MB in the beginning and 110.8 MB in the end (delta: -5.8 MB). Peak memory consumption was 56.6 MB. Max. memory is 7.1 GB. [2020-08-22 06:23:29,955 INFO L168 Benchmark]: CDTParser took 0.78 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 06:23:29,956 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.37 ms. Allocated memory is still 141.6 MB. Free memory was 104.8 MB in the beginning and 93.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-08-22 06:23:29,957 INFO L168 Benchmark]: Boogie Preprocessor took 123.97 ms. Allocated memory was 141.6 MB in the beginning and 203.9 MB in the end (delta: 62.4 MB). Free memory was 93.8 MB in the beginning and 181.7 MB in the end (delta: -87.9 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-08-22 06:23:29,958 INFO L168 Benchmark]: RCFGBuilder took 406.40 ms. Allocated memory is still 203.9 MB. Free memory was 181.7 MB in the beginning and 164.5 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. [2020-08-22 06:23:29,959 INFO L168 Benchmark]: TraceAbstraction took 921.46 ms. Allocated memory is still 203.9 MB. Free memory was 163.9 MB in the beginning and 110.8 MB in the end (delta: 53.1 MB). Peak memory consumption was 53.1 MB. Max. memory is 7.1 GB. [2020-08-22 06:23:29,966 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.78 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 267.37 ms. Allocated memory is still 141.6 MB. Free memory was 104.8 MB in the beginning and 93.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.97 ms. Allocated memory was 141.6 MB in the beginning and 203.9 MB in the end (delta: 62.4 MB). Free memory was 93.8 MB in the beginning and 181.7 MB in the end (delta: -87.9 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 406.40 ms. Allocated memory is still 203.9 MB. Free memory was 181.7 MB in the beginning and 164.5 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 921.46 ms. Allocated memory is still 203.9 MB. Free memory was 163.9 MB in the beginning and 110.8 MB in the end (delta: 53.1 MB). Peak memory consumption was 53.1 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