/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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --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/sina1f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 16:39:03,844 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 16:39:03,847 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 16:39:03,889 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 16:39:03,889 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 16:39:03,898 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 16:39:03,901 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 16:39:03,904 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 16:39:03,907 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 16:39:03,910 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 16:39:03,911 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 16:39:03,912 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 16:39:03,912 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 16:39:03,915 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 16:39:03,917 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 16:39:03,919 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 16:39:03,920 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 16:39:03,921 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 16:39:03,923 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 16:39:03,931 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 16:39:03,933 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 16:39:03,936 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 16:39:03,937 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 16:39:03,938 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 16:39:03,950 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 16:39:03,950 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 16:39:03,950 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 16:39:03,953 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 16:39:03,953 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 16:39:03,956 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 16:39:03,956 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 16:39:03,957 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 16:39:03,958 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 16:39:03,958 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 16:39:03,959 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 16:39:03,959 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 16:39:03,960 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 16:39:03,960 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 16:39:03,960 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 16:39:03,962 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 16:39:03,963 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 16:39:03,964 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 [2020-08-21 16:39:04,005 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 16:39:04,005 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 16:39:04,007 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 16:39:04,008 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 16:39:04,008 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 16:39:04,008 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 16:39:04,008 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 16:39:04,009 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 16:39:04,009 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 16:39:04,009 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 16:39:04,010 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 16:39:04,010 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 16:39:04,010 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 16:39:04,011 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 16:39:04,011 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 16:39:04,011 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 16:39:04,011 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 16:39:04,012 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 16:39:04,012 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 16:39:04,012 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 16:39:04,012 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 16:39:04,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 16:39:04,013 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 16:39:04,013 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 16:39:04,013 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 16:39:04,013 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 16:39:04,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 16:39:04,014 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 16:39:04,014 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 16:39:04,014 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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 16:39:04,341 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 16:39:04,353 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 16:39:04,358 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 16:39:04,360 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 16:39:04,361 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 16:39:04,361 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sina1f.c [2020-08-21 16:39:04,438 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3041eab37/1452250c056c4270ad8fbb38d9d8ee9b/FLAG3cf0940f6 [2020-08-21 16:39:04,919 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 16:39:04,920 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/sina1f.c [2020-08-21 16:39:04,925 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3041eab37/1452250c056c4270ad8fbb38d9d8ee9b/FLAG3cf0940f6 [2020-08-21 16:39:05,326 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3041eab37/1452250c056c4270ad8fbb38d9d8ee9b [2020-08-21 16:39:05,334 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 16:39:05,336 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 16:39:05,337 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 16:39:05,337 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 16:39:05,340 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 16:39:05,341 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:39:05" (1/1) ... [2020-08-21 16:39:05,344 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad15a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:39:05, skipping insertion in model container [2020-08-21 16:39:05,344 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:39:05" (1/1) ... [2020-08-21 16:39:05,353 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 16:39:05,375 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 16:39:05,562 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:39:05,571 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 16:39:05,593 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:39:05,697 INFO L208 MainTranslator]: Completed translation [2020-08-21 16:39:05,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:39:05 WrapperNode [2020-08-21 16:39:05,698 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 16:39:05,699 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 16:39:05,699 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 16:39:05,699 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 16:39:05,711 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:39:05" (1/1) ... [2020-08-21 16:39:05,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:39:05" (1/1) ... [2020-08-21 16:39:05,721 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:39:05" (1/1) ... [2020-08-21 16:39:05,721 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:39:05" (1/1) ... [2020-08-21 16:39:05,728 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:39:05" (1/1) ... [2020-08-21 16:39:05,734 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:39:05" (1/1) ... [2020-08-21 16:39:05,736 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:39:05" (1/1) ... [2020-08-21 16:39:05,738 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 16:39:05,739 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 16:39:05,739 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 16:39:05,739 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 16:39:05,740 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:39:05" (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 [2020-08-21 16:39:05,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 16:39:05,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 16:39:05,813 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 16:39:05,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-21 16:39:05,814 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 16:39:05,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 16:39:05,814 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 16:39:05,814 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 16:39:05,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 16:39:05,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 16:39:05,814 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 16:39:05,814 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 16:39:05,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 16:39:05,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 16:39:05,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 16:39:05,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 16:39:05,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 16:39:05,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 16:39:05,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 16:39:06,079 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 16:39:06,079 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-08-21 16:39:06,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:39:06 BoogieIcfgContainer [2020-08-21 16:39:06,085 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 16:39:06,086 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 16:39:06,086 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 16:39:06,089 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 16:39:06,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 04:39:05" (1/3) ... [2020-08-21 16:39:06,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58a6743a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:39:06, skipping insertion in model container [2020-08-21 16:39:06,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:39:05" (2/3) ... [2020-08-21 16:39:06,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58a6743a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:39:06, skipping insertion in model container [2020-08-21 16:39:06,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:39:06" (3/3) ... [2020-08-21 16:39:06,093 INFO L109 eAbstractionObserver]: Analyzing ICFG sina1f.c [2020-08-21 16:39:06,106 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 16:39:06,113 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 16:39:06,127 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 16:39:06,153 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 16:39:06,153 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 16:39:06,154 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 16:39:06,154 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 16:39:06,154 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 16:39:06,154 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 16:39:06,154 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 16:39:06,154 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 16:39:06,177 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-08-21 16:39:06,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-21 16:39:06,190 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:39:06,191 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] [2020-08-21 16:39:06,191 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:39:06,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:39:06,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1314760119, now seen corresponding path program 1 times [2020-08-21 16:39:06,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:39:06,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [290397281] [2020-08-21 16:39:06,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:39:06,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:39:06,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:39:06,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:39:06,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 16:39:06,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:39:06,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:39:06,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [290397281] [2020-08-21 16:39:06,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:39:06,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 16:39:06,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281291471] [2020-08-21 16:39:06,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 16:39:06,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:39:06,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 16:39:06,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 16:39:06,440 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 3 states. [2020-08-21 16:39:06,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:39:06,562 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2020-08-21 16:39:06,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 16:39:06,564 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-08-21 16:39:06,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:39:06,574 INFO L225 Difference]: With dead ends: 58 [2020-08-21 16:39:06,575 INFO L226 Difference]: Without dead ends: 29 [2020-08-21 16:39:06,579 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 [2020-08-21 16:39:06,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-08-21 16:39:06,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-08-21 16:39:06,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-08-21 16:39:06,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-08-21 16:39:06,625 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 22 [2020-08-21 16:39:06,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:39:06,625 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-08-21 16:39:06,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 16:39:06,626 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-08-21 16:39:06,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-21 16:39:06,627 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:39:06,628 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] [2020-08-21 16:39:06,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 16:39:06,629 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:39:06,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:39:06,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1901566133, now seen corresponding path program 1 times [2020-08-21 16:39:06,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:39:06,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1797025739] [2020-08-21 16:39:06,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:39:06,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:39:06,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:39:06,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:39:06,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 16:39:06,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:39:06,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:39:06,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1797025739] [2020-08-21 16:39:06,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:39:06,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 16:39:06,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789865781] [2020-08-21 16:39:06,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 16:39:06,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:39:06,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 16:39:06,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:39:06,767 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 5 states. [2020-08-21 16:39:06,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:39:06,904 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2020-08-21 16:39:06,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 16:39:06,905 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-08-21 16:39:06,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:39:06,907 INFO L225 Difference]: With dead ends: 51 [2020-08-21 16:39:06,908 INFO L226 Difference]: Without dead ends: 37 [2020-08-21 16:39:06,909 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 [2020-08-21 16:39:06,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-08-21 16:39:06,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2020-08-21 16:39:06,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-08-21 16:39:06,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-08-21 16:39:06,923 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 22 [2020-08-21 16:39:06,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:39:06,923 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-08-21 16:39:06,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 16:39:06,924 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-08-21 16:39:06,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-21 16:39:06,925 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:39:06,925 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] [2020-08-21 16:39:06,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 16:39:06,925 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:39:06,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:39:06,926 INFO L82 PathProgramCache]: Analyzing trace with hash -69884793, now seen corresponding path program 1 times [2020-08-21 16:39:06,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:39:06,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [822230451] [2020-08-21 16:39:06,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:39:06,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 16:39:06,986 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 16:39:06,987 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 16:39:06,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 16:39:07,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 04:39:07 BoogieIcfgContainer [2020-08-21 16:39:07,011 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 16:39:07,015 INFO L168 Benchmark]: Toolchain (without parser) took 1677.60 ms. Allocated memory was 149.9 MB in the beginning and 206.0 MB in the end (delta: 56.1 MB). Free memory was 104.5 MB in the beginning and 110.1 MB in the end (delta: -5.7 MB). Peak memory consumption was 50.4 MB. Max. memory is 7.1 GB. [2020-08-21 16:39:07,016 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 149.9 MB. Free memory was 123.2 MB in the beginning and 123.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 16:39:07,017 INFO L168 Benchmark]: CACSL2BoogieTranslator took 361.68 ms. Allocated memory was 149.9 MB in the beginning and 206.0 MB in the end (delta: 56.1 MB). Free memory was 104.3 MB in the beginning and 185.0 MB in the end (delta: -80.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. [2020-08-21 16:39:07,018 INFO L168 Benchmark]: Boogie Preprocessor took 39.45 ms. Allocated memory is still 206.0 MB. Free memory was 185.0 MB in the beginning and 182.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-08-21 16:39:07,019 INFO L168 Benchmark]: RCFGBuilder took 346.12 ms. Allocated memory is still 206.0 MB. Free memory was 182.8 MB in the beginning and 165.7 MB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 7.1 GB. [2020-08-21 16:39:07,020 INFO L168 Benchmark]: TraceAbstraction took 925.70 ms. Allocated memory is still 206.0 MB. Free memory was 165.7 MB in the beginning and 110.1 MB in the end (delta: 55.6 MB). Peak memory consumption was 55.6 MB. Max. memory is 7.1 GB. [2020-08-21 16:39:07,024 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 149.9 MB. Free memory was 123.2 MB in the beginning and 123.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 361.68 ms. Allocated memory was 149.9 MB in the beginning and 206.0 MB in the end (delta: 56.1 MB). Free memory was 104.3 MB in the beginning and 185.0 MB in the end (delta: -80.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 39.45 ms. Allocated memory is still 206.0 MB. Free memory was 185.0 MB in the beginning and 182.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 346.12 ms. Allocated memory is still 206.0 MB. Free memory was 182.8 MB in the beginning and 165.7 MB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 925.70 ms. Allocated memory is still 206.0 MB. Free memory was 165.7 MB in the beginning and 110.1 MB in the end (delta: 55.6 MB). Peak memory consumption was 55.6 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] int sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] sum[0] = 1 [L30] i=0 [L30] COND TRUE i