/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --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/res2of.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 02:20:47,599 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 02:20:47,602 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 02:20:47,640 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 02:20:47,642 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 02:20:47,650 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 02:20:47,652 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 02:20:47,656 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 02:20:47,658 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 02:20:47,661 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 02:20:47,662 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 02:20:47,663 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 02:20:47,663 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 02:20:47,666 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 02:20:47,669 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 02:20:47,670 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 02:20:47,672 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 02:20:47,673 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 02:20:47,675 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 02:20:47,683 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 02:20:47,686 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 02:20:47,687 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 02:20:47,688 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 02:20:47,689 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 02:20:47,706 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 02:20:47,706 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 02:20:47,706 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 02:20:47,707 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 02:20:47,708 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 02:20:47,709 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 02:20:47,712 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 02:20:47,713 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 02:20:47,716 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 02:20:47,717 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 02:20:47,718 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 02:20:47,718 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 02:20:47,719 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 02:20:47,720 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 02:20:47,720 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 02:20:47,721 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 02:20:47,721 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 02:20:47,722 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 02:20:47,762 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 02:20:47,763 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 02:20:47,765 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 02:20:47,765 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 02:20:47,765 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 02:20:47,765 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 02:20:47,766 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 02:20:47,766 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 02:20:47,766 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 02:20:47,766 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 02:20:47,767 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 02:20:47,767 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 02:20:47,768 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 02:20:47,768 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 02:20:47,768 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 02:20:47,768 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 02:20:47,769 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 02:20:47,769 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 02:20:47,769 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 02:20:47,769 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 02:20:47,770 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 02:20:47,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 02:20:47,770 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 02:20:47,770 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 02:20:47,770 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 02:20:47,771 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 02:20:47,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 02:20:47,771 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 02:20:47,771 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 02:20:47,771 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=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-08-22 02:20:48,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 02:20:48,076 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 02:20:48,079 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 02:20:48,081 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 02:20:48,081 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 02:20:48,082 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/res2of.c [2020-08-22 02:20:48,142 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9181bb817/22955d8eaa984bbc9e6af1a4178249f3/FLAGf35280c1e [2020-08-22 02:20:48,605 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 02:20:48,606 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/res2of.c [2020-08-22 02:20:48,615 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9181bb817/22955d8eaa984bbc9e6af1a4178249f3/FLAGf35280c1e [2020-08-22 02:20:48,977 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9181bb817/22955d8eaa984bbc9e6af1a4178249f3 [2020-08-22 02:20:48,986 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 02:20:48,988 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 02:20:48,989 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 02:20:48,989 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 02:20:48,993 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 02:20:48,995 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:20:48" (1/1) ... [2020-08-22 02:20:48,998 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@176fd554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:20:48, skipping insertion in model container [2020-08-22 02:20:48,998 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:20:48" (1/1) ... [2020-08-22 02:20:49,007 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 02:20:49,028 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 02:20:49,234 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:20:49,244 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 02:20:49,270 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:20:49,368 INFO L208 MainTranslator]: Completed translation [2020-08-22 02:20:49,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:20:49 WrapperNode [2020-08-22 02:20:49,368 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 02:20:49,369 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 02:20:49,369 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 02:20:49,369 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 02:20:49,382 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:20:49" (1/1) ... [2020-08-22 02:20:49,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:20:49" (1/1) ... [2020-08-22 02:20:49,390 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:20:49" (1/1) ... [2020-08-22 02:20:49,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:20:49" (1/1) ... [2020-08-22 02:20:49,401 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:20:49" (1/1) ... [2020-08-22 02:20:49,408 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:20:49" (1/1) ... [2020-08-22 02:20:49,410 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:20:49" (1/1) ... [2020-08-22 02:20:49,413 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 02:20:49,413 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 02:20:49,414 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 02:20:49,414 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 02:20:49,415 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:20:49" (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 02:20:49,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 02:20:49,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 02:20:49,472 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 02:20:49,472 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 02:20:49,473 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 02:20:49,473 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 02:20:49,473 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 02:20:49,473 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 02:20:49,473 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 02:20:49,473 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 02:20:49,473 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 02:20:49,474 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 02:20:49,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 02:20:49,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 02:20:49,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 02:20:49,474 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 02:20:49,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 02:20:49,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 02:20:49,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 02:20:49,856 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 02:20:49,856 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-22 02:20:49,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:20:49 BoogieIcfgContainer [2020-08-22 02:20:49,860 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 02:20:49,861 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 02:20:49,862 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 02:20:49,865 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 02:20:49,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 02:20:48" (1/3) ... [2020-08-22 02:20:49,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32ed55e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:20:49, skipping insertion in model container [2020-08-22 02:20:49,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:20:49" (2/3) ... [2020-08-22 02:20:49,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32ed55e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:20:49, skipping insertion in model container [2020-08-22 02:20:49,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:20:49" (3/3) ... [2020-08-22 02:20:49,868 INFO L109 eAbstractionObserver]: Analyzing ICFG res2of.c [2020-08-22 02:20:49,883 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 02:20:49,891 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 02:20:49,906 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 02:20:49,937 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 02:20:49,938 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 02:20:49,938 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 02:20:49,938 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 02:20:49,938 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 02:20:49,938 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 02:20:49,938 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 02:20:49,939 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 02:20:49,968 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-08-22 02:20:49,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-08-22 02:20:49,975 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:20:49,976 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] [2020-08-22 02:20:49,977 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:20:49,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:20:49,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1797528887, now seen corresponding path program 1 times [2020-08-22 02:20:49,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:20:49,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2070475196] [2020-08-22 02:20:49,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:20:50,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:20:50,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:20:50,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:20:50,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 02:20:50,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:20:50,184 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 02:20:50,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2070475196] [2020-08-22 02:20:50,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:20:50,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 02:20:50,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197409818] [2020-08-22 02:20:50,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 02:20:50,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:20:50,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 02:20:50,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 02:20:50,206 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 3 states. [2020-08-22 02:20:50,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:20:50,376 INFO L93 Difference]: Finished difference Result 76 states and 103 transitions. [2020-08-22 02:20:50,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 02:20:50,378 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-08-22 02:20:50,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:20:50,386 INFO L225 Difference]: With dead ends: 76 [2020-08-22 02:20:50,387 INFO L226 Difference]: Without dead ends: 36 [2020-08-22 02:20:50,391 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 02:20:50,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-08-22 02:20:50,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-08-22 02:20:50,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-08-22 02:20:50,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2020-08-22 02:20:50,429 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 29 [2020-08-22 02:20:50,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:20:50,430 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2020-08-22 02:20:50,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 02:20:50,430 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2020-08-22 02:20:50,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-08-22 02:20:50,431 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:20:50,432 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] [2020-08-22 02:20:50,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 02:20:50,432 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:20:50,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:20:50,433 INFO L82 PathProgramCache]: Analyzing trace with hash 120259143, now seen corresponding path program 1 times [2020-08-22 02:20:50,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:20:50,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1956345048] [2020-08-22 02:20:50,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:20:50,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:20:50,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:20:50,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:20:50,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 02:20:50,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:20:50,563 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 02:20:50,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1956345048] [2020-08-22 02:20:50,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:20:50,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 02:20:50,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022106385] [2020-08-22 02:20:50,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 02:20:50,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:20:50,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 02:20:50,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 02:20:50,568 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 5 states. [2020-08-22 02:20:50,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:20:50,759 INFO L93 Difference]: Finished difference Result 69 states and 84 transitions. [2020-08-22 02:20:50,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 02:20:50,760 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-08-22 02:20:50,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:20:50,761 INFO L225 Difference]: With dead ends: 69 [2020-08-22 02:20:50,761 INFO L226 Difference]: Without dead ends: 48 [2020-08-22 02:20:50,763 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 02:20:50,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-22 02:20:50,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2020-08-22 02:20:50,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-08-22 02:20:50,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2020-08-22 02:20:50,774 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 29 [2020-08-22 02:20:50,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:20:50,775 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2020-08-22 02:20:50,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 02:20:50,775 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2020-08-22 02:20:50,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-08-22 02:20:50,777 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:20:50,777 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:20:50,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 02:20:50,778 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:20:50,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:20:50,779 INFO L82 PathProgramCache]: Analyzing trace with hash -774790125, now seen corresponding path program 1 times [2020-08-22 02:20:50,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:20:50,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [570929410] [2020-08-22 02:20:50,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:20:50,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 02:20:50,929 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 02:20:50,953 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 02:20:50,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 02:20:50,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 02:20:50 BoogieIcfgContainer [2020-08-22 02:20:50,977 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 02:20:50,981 INFO L168 Benchmark]: Toolchain (without parser) took 1992.19 ms. Allocated memory was 141.6 MB in the beginning and 234.9 MB in the end (delta: 93.3 MB). Free memory was 104.3 MB in the beginning and 204.2 MB in the end (delta: -99.9 MB). Peak memory consumption was 80.9 MB. Max. memory is 7.1 GB. [2020-08-22 02:20:50,982 INFO L168 Benchmark]: CDTParser took 0.19 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 02:20:50,983 INFO L168 Benchmark]: CACSL2BoogieTranslator took 380.05 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 104.1 MB in the beginning and 184.0 MB in the end (delta: -79.9 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-08-22 02:20:50,984 INFO L168 Benchmark]: Boogie Preprocessor took 44.14 ms. Allocated memory is still 205.0 MB. Free memory was 183.3 MB in the beginning and 181.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-08-22 02:20:50,985 INFO L168 Benchmark]: RCFGBuilder took 446.77 ms. Allocated memory is still 205.0 MB. Free memory was 181.0 MB in the beginning and 160.9 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2020-08-22 02:20:50,986 INFO L168 Benchmark]: TraceAbstraction took 1116.25 ms. Allocated memory was 205.0 MB in the beginning and 234.9 MB in the end (delta: 29.9 MB). Free memory was 160.3 MB in the beginning and 204.2 MB in the end (delta: -43.9 MB). Peak memory consumption was 73.4 MB. Max. memory is 7.1 GB. [2020-08-22 02:20:50,990 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 380.05 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 104.1 MB in the beginning and 184.0 MB in the end (delta: -79.9 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 44.14 ms. Allocated memory is still 205.0 MB. Free memory was 183.3 MB in the beginning and 181.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 446.77 ms. Allocated memory is still 205.0 MB. Free memory was 181.0 MB in the beginning and 160.9 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1116.25 ms. Allocated memory was 205.0 MB in the beginning and 234.9 MB in the end (delta: 29.9 MB). Free memory was 160.3 MB in the beginning and 204.2 MB in the end (delta: -43.9 MB). Peak memory consumption was 73.4 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); [L28] int *b = malloc(sizeof(int)*N); [L29] int *c = malloc(sizeof(int)*N); [L31] sum[0] = 0 [L32] i=0 [L32] COND TRUE i