/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/ms3f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 23:38:36,905 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 23:38:36,907 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 23:38:36,931 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 23:38:36,931 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 23:38:36,932 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 23:38:36,934 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 23:38:36,936 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 23:38:36,937 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 23:38:36,938 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 23:38:36,939 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 23:38:36,940 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 23:38:36,941 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 23:38:36,942 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 23:38:36,943 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 23:38:36,944 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 23:38:36,945 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 23:38:36,945 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 23:38:36,947 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 23:38:36,949 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 23:38:36,950 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 23:38:36,951 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 23:38:36,952 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 23:38:36,953 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 23:38:36,956 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 23:38:36,956 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 23:38:36,956 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 23:38:36,957 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 23:38:36,958 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 23:38:36,959 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 23:38:36,959 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 23:38:36,960 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 23:38:36,960 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 23:38:36,961 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 23:38:36,962 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 23:38:36,962 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 23:38:36,963 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 23:38:36,963 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 23:38:36,963 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 23:38:36,964 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 23:38:36,965 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 23:38:36,966 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 [2020-08-18 23:38:36,988 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 23:38:36,988 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 23:38:36,989 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 23:38:36,989 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 23:38:36,990 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 23:38:36,990 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 23:38:36,990 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 23:38:36,990 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 23:38:36,990 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 23:38:36,991 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 23:38:36,991 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 23:38:36,991 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 23:38:36,991 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 23:38:36,991 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 23:38:36,992 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 23:38:36,992 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 23:38:36,992 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 23:38:36,992 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 23:38:36,992 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 23:38:36,993 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 23:38:36,993 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 23:38:36,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 23:38:36,993 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 23:38:36,993 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 23:38:36,994 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 23:38:36,994 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 23:38:36,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 23:38:36,994 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 23:38:36,994 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 23:38:36,995 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=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; [2020-08-18 23:38:37,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 23:38:37,316 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 23:38:37,320 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 23:38:37,321 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 23:38:37,321 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 23:38:37,322 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ms3f.c [2020-08-18 23:38:37,381 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/514972aff/981b983fb05a45c09b7be1c99d0c6991/FLAGc631d8052 [2020-08-18 23:38:37,804 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 23:38:37,804 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ms3f.c [2020-08-18 23:38:37,812 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/514972aff/981b983fb05a45c09b7be1c99d0c6991/FLAGc631d8052 [2020-08-18 23:38:38,230 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/514972aff/981b983fb05a45c09b7be1c99d0c6991 [2020-08-18 23:38:38,240 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 23:38:38,242 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 23:38:38,243 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 23:38:38,243 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 23:38:38,247 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 23:38:38,248 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:38:38" (1/1) ... [2020-08-18 23:38:38,251 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 18.08 11:38:38, skipping insertion in model container [2020-08-18 23:38:38,251 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:38:38" (1/1) ... [2020-08-18 23:38:38,259 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 23:38:38,277 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 23:38:38,462 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:38:38,471 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 23:38:38,493 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:38:38,510 INFO L208 MainTranslator]: Completed translation [2020-08-18 23:38:38,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:38:38 WrapperNode [2020-08-18 23:38:38,511 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 23:38:38,512 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 23:38:38,512 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 23:38:38,512 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 23:38:38,659 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:38:38" (1/1) ... [2020-08-18 23:38:38,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:38:38" (1/1) ... [2020-08-18 23:38:38,671 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:38:38" (1/1) ... [2020-08-18 23:38:38,671 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:38:38" (1/1) ... [2020-08-18 23:38:38,690 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:38:38" (1/1) ... [2020-08-18 23:38:38,696 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:38:38" (1/1) ... [2020-08-18 23:38:38,703 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:38:38" (1/1) ... [2020-08-18 23:38:38,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 23:38:38,707 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 23:38:38,707 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 23:38:38,707 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 23:38:38,708 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:38:38" (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 [2020-08-18 23:38:38,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 23:38:38,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 23:38:38,773 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 23:38:38,773 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-18 23:38:38,773 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 23:38:38,773 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 23:38:38,774 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 23:38:38,774 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 23:38:38,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-18 23:38:38,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 23:38:38,774 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 23:38:38,774 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 23:38:38,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 23:38:38,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 23:38:38,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 23:38:38,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 23:38:38,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 23:38:38,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 23:38:38,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 23:38:39,147 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 23:38:39,147 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-08-18 23:38:39,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:38:39 BoogieIcfgContainer [2020-08-18 23:38:39,151 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 23:38:39,152 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 23:38:39,153 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 23:38:39,156 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 23:38:39,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:38:38" (1/3) ... [2020-08-18 23:38:39,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ffe0a83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:38:39, skipping insertion in model container [2020-08-18 23:38:39,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:38:38" (2/3) ... [2020-08-18 23:38:39,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ffe0a83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:38:39, skipping insertion in model container [2020-08-18 23:38:39,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:38:39" (3/3) ... [2020-08-18 23:38:39,160 INFO L109 eAbstractionObserver]: Analyzing ICFG ms3f.c [2020-08-18 23:38:39,171 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 23:38:39,179 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 23:38:39,196 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 23:38:39,216 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 23:38:39,216 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 23:38:39,216 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 23:38:39,216 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 23:38:39,216 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 23:38:39,217 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 23:38:39,217 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 23:38:39,217 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 23:38:39,237 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-08-18 23:38:39,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-18 23:38:39,243 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:38:39,244 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:38:39,245 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:38:39,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:38:39,251 INFO L82 PathProgramCache]: Analyzing trace with hash -432131487, now seen corresponding path program 1 times [2020-08-18 23:38:39,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:38:39,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [388381311] [2020-08-18 23:38:39,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:38:39,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:38:39,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:38:39,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:38:39,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 23:38:39,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:38:39,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:38:39,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [388381311] [2020-08-18 23:38:39,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:38:39,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 23:38:39,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168962418] [2020-08-18 23:38:39,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 23:38:39,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:38:39,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 23:38:39,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 23:38:39,470 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-08-18 23:38:39,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:38:39,574 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2020-08-18 23:38:39,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 23:38:39,576 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-08-18 23:38:39,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:38:39,583 INFO L225 Difference]: With dead ends: 54 [2020-08-18 23:38:39,583 INFO L226 Difference]: Without dead ends: 25 [2020-08-18 23:38:39,587 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 [2020-08-18 23:38:39,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-08-18 23:38:39,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-08-18 23:38:39,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-08-18 23:38:39,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-08-18 23:38:39,621 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 21 [2020-08-18 23:38:39,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:38:39,621 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-08-18 23:38:39,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 23:38:39,622 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-08-18 23:38:39,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-18 23:38:39,623 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:38:39,623 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:38:39,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 23:38:39,623 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:38:39,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:38:39,624 INFO L82 PathProgramCache]: Analyzing trace with hash -173966049, now seen corresponding path program 1 times [2020-08-18 23:38:39,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:38:39,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [846313333] [2020-08-18 23:38:39,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:38:39,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:38:39,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:38:39,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:38:39,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 23:38:39,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:38:39,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:38:39,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [846313333] [2020-08-18 23:38:39,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:38:39,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 23:38:39,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934189373] [2020-08-18 23:38:39,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 23:38:39,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:38:39,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 23:38:39,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 23:38:39,759 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 5 states. [2020-08-18 23:38:39,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:38:39,886 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2020-08-18 23:38:39,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 23:38:39,886 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-08-18 23:38:39,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:38:39,888 INFO L225 Difference]: With dead ends: 40 [2020-08-18 23:38:39,888 INFO L226 Difference]: Without dead ends: 30 [2020-08-18 23:38:39,889 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 [2020-08-18 23:38:39,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-08-18 23:38:39,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-08-18 23:38:39,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-08-18 23:38:39,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-08-18 23:38:39,897 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 21 [2020-08-18 23:38:39,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:38:39,898 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-08-18 23:38:39,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 23:38:39,898 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-08-18 23:38:39,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-18 23:38:39,899 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:38:39,899 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:38:39,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 23:38:39,900 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:38:39,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:38:39,900 INFO L82 PathProgramCache]: Analyzing trace with hash -445719797, now seen corresponding path program 1 times [2020-08-18 23:38:39,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:38:39,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702269999] [2020-08-18 23:38:39,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:38:39,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 23:38:39,941 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 23:38:39,941 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 23:38:39,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 23:38:39,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 11:38:39 BoogieIcfgContainer [2020-08-18 23:38:39,962 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 23:38:39,965 INFO L168 Benchmark]: Toolchain (without parser) took 1722.45 ms. Allocated memory was 147.3 MB in the beginning and 205.5 MB in the end (delta: 58.2 MB). Free memory was 103.1 MB in the beginning and 114.3 MB in the end (delta: -11.2 MB). Peak memory consumption was 47.0 MB. Max. memory is 7.1 GB. [2020-08-18 23:38:39,966 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 147.3 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-18 23:38:39,967 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.24 ms. Allocated memory is still 147.3 MB. Free memory was 102.9 MB in the beginning and 92.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-08-18 23:38:39,968 INFO L168 Benchmark]: Boogie Preprocessor took 194.54 ms. Allocated memory was 147.3 MB in the beginning and 205.5 MB in the end (delta: 58.2 MB). Free memory was 92.4 MB in the beginning and 182.5 MB in the end (delta: -90.1 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-08-18 23:38:39,969 INFO L168 Benchmark]: RCFGBuilder took 444.40 ms. Allocated memory is still 205.5 MB. Free memory was 182.5 MB in the beginning and 166.3 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. [2020-08-18 23:38:39,970 INFO L168 Benchmark]: TraceAbstraction took 809.87 ms. Allocated memory is still 205.5 MB. Free memory was 165.7 MB in the beginning and 114.3 MB in the end (delta: 51.3 MB). Peak memory consumption was 51.3 MB. Max. memory is 7.1 GB. [2020-08-18 23:38:39,979 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 147.3 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 268.24 ms. Allocated memory is still 147.3 MB. Free memory was 102.9 MB in the beginning and 92.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 194.54 ms. Allocated memory was 147.3 MB in the beginning and 205.5 MB in the end (delta: 58.2 MB). Free memory was 92.4 MB in the beginning and 182.5 MB in the end (delta: -90.1 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 444.40 ms. Allocated memory is still 205.5 MB. Free memory was 182.5 MB in the beginning and 166.3 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 809.87 ms. Allocated memory is still 205.5 MB. Free memory was 165.7 MB in the beginning and 114.3 MB in the end (delta: 51.3 MB). Peak memory consumption was 51.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] i=0 [L29] COND TRUE i 2*N) [L13] COND TRUE !(cond) [L13] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 51 SDtfs, 39 SDslu, 11 SDs, 0 SdLazy, 64 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 1480 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...