/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/s3liff.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 16:39:01,772 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 16:39:01,774 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 16:39:01,799 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 16:39:01,799 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 16:39:01,800 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 16:39:01,801 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 16:39:01,803 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 16:39:01,805 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 16:39:01,806 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 16:39:01,807 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 16:39:01,808 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 16:39:01,808 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 16:39:01,809 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 16:39:01,810 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 16:39:01,811 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 16:39:01,812 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 16:39:01,815 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 16:39:01,817 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 16:39:01,822 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 16:39:01,823 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 16:39:01,824 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 16:39:01,825 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 16:39:01,826 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 16:39:01,828 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 16:39:01,828 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 16:39:01,828 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 16:39:01,829 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 16:39:01,830 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 16:39:01,831 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 16:39:01,831 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 16:39:01,831 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 16:39:01,832 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 16:39:01,833 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 16:39:01,834 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 16:39:01,834 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 16:39:01,834 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 16:39:01,835 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 16:39:01,835 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 16:39:01,836 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 16:39:01,836 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 16:39:01,837 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 16:39:01,859 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 16:39:01,860 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 16:39:01,861 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 16:39:01,861 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 16:39:01,861 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 16:39:01,861 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 16:39:01,862 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 16:39:01,862 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 16:39:01,862 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 16:39:01,862 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 16:39:01,862 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 16:39:01,863 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 16:39:01,863 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 16:39:01,863 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 16:39:01,863 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 16:39:01,863 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 16:39:01,864 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 16:39:01,864 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 16:39:01,864 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 16:39:01,864 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 16:39:01,864 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 16:39:01,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 16:39:01,865 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 16:39:01,865 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 16:39:01,865 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 16:39:01,865 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 16:39:01,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 16:39:01,866 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 16:39:01,866 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 16:39:01,866 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 16:39:02,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 16:39:02,187 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 16:39:02,191 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 16:39:02,192 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 16:39:02,193 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 16:39:02,193 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s3liff.c [2020-08-21 16:39:02,264 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c2b071094/d87764e771314ceca5f28dcff4e5fd94/FLAG081749c5d [2020-08-21 16:39:02,728 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 16:39:02,729 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s3liff.c [2020-08-21 16:39:02,736 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c2b071094/d87764e771314ceca5f28dcff4e5fd94/FLAG081749c5d [2020-08-21 16:39:03,154 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c2b071094/d87764e771314ceca5f28dcff4e5fd94 [2020-08-21 16:39:03,164 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 16:39:03,166 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 16:39:03,167 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 16:39:03,167 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 16:39:03,171 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 16:39:03,172 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:39:03" (1/1) ... [2020-08-21 16:39:03,175 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@425c36b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:39:03, skipping insertion in model container [2020-08-21 16:39:03,175 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:39:03" (1/1) ... [2020-08-21 16:39:03,183 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 16:39:03,202 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 16:39:03,389 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:39:03,398 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 16:39:03,422 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:39:03,438 INFO L208 MainTranslator]: Completed translation [2020-08-21 16:39:03,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:39:03 WrapperNode [2020-08-21 16:39:03,439 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 16:39:03,439 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 16:39:03,440 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 16:39:03,440 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 16:39:03,530 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:39:03" (1/1) ... [2020-08-21 16:39:03,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:39:03" (1/1) ... [2020-08-21 16:39:03,539 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:39:03" (1/1) ... [2020-08-21 16:39:03,540 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:39:03" (1/1) ... [2020-08-21 16:39:03,549 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:39:03" (1/1) ... [2020-08-21 16:39:03,555 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:39:03" (1/1) ... [2020-08-21 16:39:03,556 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:39:03" (1/1) ... [2020-08-21 16:39:03,559 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 16:39:03,560 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 16:39:03,560 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 16:39:03,560 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 16:39:03,561 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:39:03" (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 16:39:03,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 16:39:03,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 16:39:03,624 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 16:39:03,624 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-21 16:39:03,625 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 16:39:03,625 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 16:39:03,626 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 16:39:03,626 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 16:39:03,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 16:39:03,628 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 16:39:03,628 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 16:39:03,628 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 16:39:03,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 16:39:03,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 16:39:03,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 16:39:03,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 16:39:03,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 16:39:03,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 16:39:03,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 16:39:03,894 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 16:39:03,895 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-08-21 16:39:03,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:39:03 BoogieIcfgContainer [2020-08-21 16:39:03,899 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 16:39:03,901 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 16:39:03,901 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 16:39:03,904 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 16:39:03,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 04:39:03" (1/3) ... [2020-08-21 16:39:03,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62e5e59d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:39:03, skipping insertion in model container [2020-08-21 16:39:03,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:39:03" (2/3) ... [2020-08-21 16:39:03,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62e5e59d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:39:03, skipping insertion in model container [2020-08-21 16:39:03,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:39:03" (3/3) ... [2020-08-21 16:39:03,908 INFO L109 eAbstractionObserver]: Analyzing ICFG s3liff.c [2020-08-21 16:39:03,924 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 16:39:03,934 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 16:39:03,954 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 16:39:03,986 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 16:39:03,986 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 16:39:03,986 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 16:39:03,986 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 16:39:03,986 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 16:39:03,987 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 16:39:03,987 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 16:39:03,987 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 16:39:04,025 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-08-21 16:39:04,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-21 16:39:04,042 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:39:04,043 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] [2020-08-21 16:39:04,043 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:39:04,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:39:04,059 INFO L82 PathProgramCache]: Analyzing trace with hash -88121349, now seen corresponding path program 1 times [2020-08-21 16:39:04,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:39:04,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1516013458] [2020-08-21 16:39:04,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:39:04,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:39:04,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:39:04,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:39:04,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 16:39:04,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:39:04,258 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 16:39:04,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1516013458] [2020-08-21 16:39:04,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:39:04,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 16:39:04,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364305944] [2020-08-21 16:39:04,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 16:39:04,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:39:04,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 16:39:04,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 16:39:04,281 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-08-21 16:39:04,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:39:04,423 INFO L93 Difference]: Finished difference Result 60 states and 77 transitions. [2020-08-21 16:39:04,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 16:39:04,426 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-08-21 16:39:04,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:39:04,440 INFO L225 Difference]: With dead ends: 60 [2020-08-21 16:39:04,440 INFO L226 Difference]: Without dead ends: 28 [2020-08-21 16:39:04,444 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 16:39:04,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-08-21 16:39:04,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-08-21 16:39:04,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-08-21 16:39:04,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2020-08-21 16:39:04,483 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 23 [2020-08-21 16:39:04,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:39:04,484 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2020-08-21 16:39:04,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 16:39:04,484 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-08-21 16:39:04,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-21 16:39:04,485 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:39:04,485 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] [2020-08-21 16:39:04,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 16:39:04,486 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:39:04,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:39:04,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1099238599, now seen corresponding path program 1 times [2020-08-21 16:39:04,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:39:04,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [487300926] [2020-08-21 16:39:04,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:39:04,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:39:04,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:39:04,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:39:04,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 16:39:04,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:39:04,629 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 16:39:04,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [487300926] [2020-08-21 16:39:04,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:39:04,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 16:39:04,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830986798] [2020-08-21 16:39:04,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 16:39:04,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:39:04,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 16:39:04,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:39:04,633 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 5 states. [2020-08-21 16:39:04,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:39:04,768 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2020-08-21 16:39:04,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 16:39:04,769 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-08-21 16:39:04,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:39:04,771 INFO L225 Difference]: With dead ends: 48 [2020-08-21 16:39:04,771 INFO L226 Difference]: Without dead ends: 35 [2020-08-21 16:39:04,772 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 16:39:04,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-08-21 16:39:04,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2020-08-21 16:39:04,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-08-21 16:39:04,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-08-21 16:39:04,781 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 23 [2020-08-21 16:39:04,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:39:04,781 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-08-21 16:39:04,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 16:39:04,782 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-08-21 16:39:04,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-21 16:39:04,783 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:39:04,783 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] [2020-08-21 16:39:04,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 16:39:04,783 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:39:04,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:39:04,784 INFO L82 PathProgramCache]: Analyzing trace with hash 188437731, now seen corresponding path program 1 times [2020-08-21 16:39:04,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:39:04,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1010136852] [2020-08-21 16:39:04,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:39:04,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 16:39:04,832 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 16:39:04,832 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 16:39:04,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 16:39:04,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 04:39:04 BoogieIcfgContainer [2020-08-21 16:39:04,854 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 16:39:04,857 INFO L168 Benchmark]: Toolchain (without parser) took 1690.25 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 100.8 MB in the beginning and 105.3 MB in the end (delta: -4.5 MB). Peak memory consumption was 57.9 MB. Max. memory is 7.1 GB. [2020-08-21 16:39:04,858 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 16:39:04,859 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.28 ms. Allocated memory is still 138.9 MB. Free memory was 100.6 MB in the beginning and 90.0 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-08-21 16:39:04,860 INFO L168 Benchmark]: Boogie Preprocessor took 119.81 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 90.0 MB in the beginning and 178.6 MB in the end (delta: -88.6 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-08-21 16:39:04,861 INFO L168 Benchmark]: RCFGBuilder took 339.77 ms. Allocated memory is still 201.3 MB. Free memory was 178.6 MB in the beginning and 160.9 MB in the end (delta: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 7.1 GB. [2020-08-21 16:39:04,862 INFO L168 Benchmark]: TraceAbstraction took 953.65 ms. Allocated memory is still 201.3 MB. Free memory was 160.2 MB in the beginning and 105.3 MB in the end (delta: 54.9 MB). Peak memory consumption was 54.9 MB. Max. memory is 7.1 GB. [2020-08-21 16:39:04,866 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 272.28 ms. Allocated memory is still 138.9 MB. Free memory was 100.6 MB in the beginning and 90.0 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.81 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 90.0 MB in the beginning and 178.6 MB in the end (delta: -88.6 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 339.77 ms. Allocated memory is still 201.3 MB. Free memory was 178.6 MB in the beginning and 160.9 MB in the end (delta: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 953.65 ms. Allocated memory is still 201.3 MB. Free memory was 160.2 MB in the beginning and 105.3 MB in the end (delta: 54.9 MB). Peak memory consumption was 54.9 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] sum[0] = N [L30] i=0 [L30] COND TRUE i