/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=0.6 --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/sina2f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 00:43:07,920 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 00:43:07,923 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 00:43:07,947 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 00:43:07,947 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 00:43:07,948 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 00:43:07,950 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 00:43:07,951 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 00:43:07,953 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 00:43:07,954 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 00:43:07,955 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 00:43:07,956 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 00:43:07,957 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 00:43:07,957 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 00:43:07,959 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 00:43:07,960 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 00:43:07,961 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 00:43:07,961 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 00:43:07,963 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 00:43:07,965 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 00:43:07,967 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 00:43:07,968 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 00:43:07,969 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 00:43:07,970 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 00:43:07,975 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 00:43:07,975 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 00:43:07,975 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 00:43:07,979 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 00:43:07,979 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 00:43:07,983 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 00:43:07,983 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 00:43:07,984 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 00:43:07,985 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 00:43:07,985 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 00:43:07,986 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 00:43:07,987 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 00:43:07,987 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 00:43:07,987 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 00:43:07,988 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 00:43:07,988 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 00:43:07,989 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 00:43:07,990 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 00:43:08,012 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 00:43:08,012 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 00:43:08,014 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 00:43:08,014 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 00:43:08,014 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 00:43:08,015 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 00:43:08,015 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 00:43:08,015 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 00:43:08,015 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 00:43:08,015 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 00:43:08,016 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 00:43:08,016 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 00:43:08,016 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 00:43:08,016 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 00:43:08,016 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 00:43:08,016 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 00:43:08,017 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 00:43:08,017 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 00:43:08,017 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 00:43:08,017 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 00:43:08,017 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 00:43:08,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 00:43:08,018 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 00:43:08,018 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 00:43:08,018 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 00:43:08,018 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 00:43:08,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 00:43:08,019 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 00:43:08,019 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 00:43:08,019 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=0.6;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=0.6;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=0.6;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=0.6;log-additional-information=true; [2020-08-22 00:43:08,357 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 00:43:08,371 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 00:43:08,375 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 00:43:08,378 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 00:43:08,380 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 00:43:08,381 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sina2f.c [2020-08-22 00:43:08,445 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ecbb6160a/ba18dfa706a94baaa5f08d33103a43bc/FLAG45ac4a4f5 [2020-08-22 00:43:08,922 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 00:43:08,923 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/sina2f.c [2020-08-22 00:43:08,930 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ecbb6160a/ba18dfa706a94baaa5f08d33103a43bc/FLAG45ac4a4f5 [2020-08-22 00:43:09,300 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ecbb6160a/ba18dfa706a94baaa5f08d33103a43bc [2020-08-22 00:43:09,308 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 00:43:09,310 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 00:43:09,311 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 00:43:09,311 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 00:43:09,315 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 00:43:09,316 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:43:09" (1/1) ... [2020-08-22 00:43:09,319 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f0c700e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:43:09, skipping insertion in model container [2020-08-22 00:43:09,319 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:43:09" (1/1) ... [2020-08-22 00:43:09,327 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 00:43:09,348 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 00:43:09,521 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:43:09,530 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 00:43:09,549 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:43:09,640 INFO L208 MainTranslator]: Completed translation [2020-08-22 00:43:09,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:43:09 WrapperNode [2020-08-22 00:43:09,642 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 00:43:09,643 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 00:43:09,643 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 00:43:09,643 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 00:43:09,653 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:43:09" (1/1) ... [2020-08-22 00:43:09,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:43:09" (1/1) ... [2020-08-22 00:43:09,662 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:43:09" (1/1) ... [2020-08-22 00:43:09,663 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:43:09" (1/1) ... [2020-08-22 00:43:09,672 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:43:09" (1/1) ... [2020-08-22 00:43:09,680 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:43:09" (1/1) ... [2020-08-22 00:43:09,684 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:43:09" (1/1) ... [2020-08-22 00:43:09,686 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 00:43:09,687 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 00:43:09,687 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 00:43:09,687 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 00:43:09,688 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:43:09" (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 00:43:09,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 00:43:09,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 00:43:09,752 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 00:43:09,752 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 00:43:09,752 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 00:43:09,753 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 00:43:09,753 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 00:43:09,753 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 00:43:09,753 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 00:43:09,753 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 00:43:09,753 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 00:43:09,754 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 00:43:09,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 00:43:09,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 00:43:09,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 00:43:09,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 00:43:09,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 00:43:09,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 00:43:09,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 00:43:10,036 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 00:43:10,036 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-22 00:43:10,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:43:10 BoogieIcfgContainer [2020-08-22 00:43:10,043 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 00:43:10,045 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 00:43:10,045 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 00:43:10,048 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 00:43:10,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 12:43:09" (1/3) ... [2020-08-22 00:43:10,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f5cdc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:43:10, skipping insertion in model container [2020-08-22 00:43:10,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:43:09" (2/3) ... [2020-08-22 00:43:10,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f5cdc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:43:10, skipping insertion in model container [2020-08-22 00:43:10,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:43:10" (3/3) ... [2020-08-22 00:43:10,053 INFO L109 eAbstractionObserver]: Analyzing ICFG sina2f.c [2020-08-22 00:43:10,087 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 00:43:10,105 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 00:43:10,123 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 00:43:10,151 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 00:43:10,152 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 00:43:10,152 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 00:43:10,152 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 00:43:10,152 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 00:43:10,160 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 00:43:10,160 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 00:43:10,160 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 00:43:10,179 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-08-22 00:43:10,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-22 00:43:10,186 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:43:10,187 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] [2020-08-22 00:43:10,188 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:43:10,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:43:10,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1155719453, now seen corresponding path program 1 times [2020-08-22 00:43:10,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:43:10,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [840038401] [2020-08-22 00:43:10,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:43:10,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:10,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:43:10,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:10,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 00:43:10,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:10,416 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 00:43:10,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [840038401] [2020-08-22 00:43:10,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:43:10,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 00:43:10,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718253364] [2020-08-22 00:43:10,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 00:43:10,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:43:10,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 00:43:10,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 00:43:10,446 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-08-22 00:43:10,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:43:10,585 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2020-08-22 00:43:10,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 00:43:10,588 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-08-22 00:43:10,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:43:10,596 INFO L225 Difference]: With dead ends: 64 [2020-08-22 00:43:10,597 INFO L226 Difference]: Without dead ends: 32 [2020-08-22 00:43:10,601 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 00:43:10,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-08-22 00:43:10,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-08-22 00:43:10,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-08-22 00:43:10,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-08-22 00:43:10,642 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 24 [2020-08-22 00:43:10,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:43:10,643 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-08-22 00:43:10,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 00:43:10,644 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-08-22 00:43:10,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-22 00:43:10,645 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:43:10,645 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] [2020-08-22 00:43:10,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 00:43:10,646 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:43:10,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:43:10,647 INFO L82 PathProgramCache]: Analyzing trace with hash -124144225, now seen corresponding path program 1 times [2020-08-22 00:43:10,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:43:10,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [418384779] [2020-08-22 00:43:10,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:43:10,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:10,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:43:10,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:10,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 00:43:10,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:10,789 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 00:43:10,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [418384779] [2020-08-22 00:43:10,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:43:10,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 00:43:10,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564028507] [2020-08-22 00:43:10,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 00:43:10,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:43:10,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 00:43:10,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 00:43:10,794 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 5 states. [2020-08-22 00:43:10,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:43:10,954 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2020-08-22 00:43:10,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 00:43:10,955 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-08-22 00:43:10,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:43:10,959 INFO L225 Difference]: With dead ends: 59 [2020-08-22 00:43:10,959 INFO L226 Difference]: Without dead ends: 42 [2020-08-22 00:43:10,960 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 00:43:10,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-08-22 00:43:10,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 35. [2020-08-22 00:43:10,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-08-22 00:43:10,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2020-08-22 00:43:10,975 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 24 [2020-08-22 00:43:10,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:43:10,976 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2020-08-22 00:43:10,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 00:43:10,976 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2020-08-22 00:43:10,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-22 00:43:10,977 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:43:10,977 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] [2020-08-22 00:43:10,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 00:43:10,978 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:43:10,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:43:10,979 INFO L82 PathProgramCache]: Analyzing trace with hash -191015719, now seen corresponding path program 1 times [2020-08-22 00:43:10,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:43:10,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [215596649] [2020-08-22 00:43:10,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:43:11,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 00:43:11,028 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 00:43:11,028 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 00:43:11,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 00:43:11,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 12:43:11 BoogieIcfgContainer [2020-08-22 00:43:11,059 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 00:43:11,066 INFO L168 Benchmark]: Toolchain (without parser) took 1755.15 ms. Allocated memory was 140.5 MB in the beginning and 201.9 MB in the end (delta: 61.3 MB). Free memory was 103.7 MB in the beginning and 101.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 63.8 MB. Max. memory is 7.1 GB. [2020-08-22 00:43:11,072 INFO L168 Benchmark]: CDTParser took 0.72 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 00:43:11,073 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.68 ms. Allocated memory was 140.5 MB in the beginning and 201.9 MB in the end (delta: 61.3 MB). Free memory was 103.3 MB in the beginning and 180.8 MB in the end (delta: -77.6 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-08-22 00:43:11,075 INFO L168 Benchmark]: Boogie Preprocessor took 43.58 ms. Allocated memory is still 201.9 MB. Free memory was 180.8 MB in the beginning and 178.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-08-22 00:43:11,077 INFO L168 Benchmark]: RCFGBuilder took 356.47 ms. Allocated memory is still 201.9 MB. Free memory was 178.5 MB in the beginning and 160.7 MB in the end (delta: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 7.1 GB. [2020-08-22 00:43:11,078 INFO L168 Benchmark]: TraceAbstraction took 1018.30 ms. Allocated memory is still 201.9 MB. Free memory was 160.0 MB in the beginning and 101.2 MB in the end (delta: 58.8 MB). Peak memory consumption was 58.8 MB. Max. memory is 7.1 GB. [2020-08-22 00:43:11,085 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.72 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 331.68 ms. Allocated memory was 140.5 MB in the beginning and 201.9 MB in the end (delta: 61.3 MB). Free memory was 103.3 MB in the beginning and 180.8 MB in the end (delta: -77.6 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 43.58 ms. Allocated memory is still 201.9 MB. Free memory was 180.8 MB in the beginning and 178.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 356.47 ms. Allocated memory is still 201.9 MB. Free memory was 178.5 MB in the beginning and 160.7 MB in the end (delta: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1018.30 ms. Allocated memory is still 201.9 MB. Free memory was 160.0 MB in the beginning and 101.2 MB in the end (delta: 58.8 MB). Peak memory consumption was 58.8 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] long long *a = malloc(sizeof(long long)*N); [L29] sum[0] = 1 [L30] i=0 [L30] COND TRUE i