/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=LOWLEXORDER --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/s4liff.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 18:15:38,888 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 18:15:38,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 18:15:38,914 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 18:15:38,914 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 18:15:38,915 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 18:15:38,916 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 18:15:38,918 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 18:15:38,920 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 18:15:38,921 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 18:15:38,921 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 18:15:38,923 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 18:15:38,923 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 18:15:38,924 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 18:15:38,925 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 18:15:38,926 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 18:15:38,927 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 18:15:38,928 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 18:15:38,929 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 18:15:38,931 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 18:15:38,933 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 18:15:38,934 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 18:15:38,935 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 18:15:38,936 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 18:15:38,938 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 18:15:38,938 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 18:15:38,938 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 18:15:38,939 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 18:15:38,940 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 18:15:38,941 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 18:15:38,941 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 18:15:38,942 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 18:15:38,942 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 18:15:38,943 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 18:15:38,944 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 18:15:38,944 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 18:15:38,945 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 18:15:38,945 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 18:15:38,945 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 18:15:38,946 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 18:15:38,947 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 18:15:38,948 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 18:15:38,979 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 18:15:38,979 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 18:15:38,983 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 18:15:38,983 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 18:15:38,983 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 18:15:38,983 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 18:15:38,984 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 18:15:38,984 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 18:15:38,984 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 18:15:38,984 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 18:15:38,984 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 18:15:38,985 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 18:15:38,985 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 18:15:38,985 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 18:15:38,985 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 18:15:38,985 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 18:15:38,985 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 18:15:38,989 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 18:15:38,989 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 18:15:38,989 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 18:15:38,990 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 18:15:38,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 18:15:38,990 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 18:15:38,990 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 18:15:38,990 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 18:15:38,991 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 18:15:38,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 18:15:38,993 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 18:15:38,993 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 18:15:38,993 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=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-08-21 18:15:39,303 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 18:15:39,320 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 18:15:39,329 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 18:15:39,331 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 18:15:39,331 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 18:15:39,332 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s4liff.c [2020-08-21 18:15:39,407 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dbcc09bb3/b2a1e61b02f1420f92915fb5d238d322/FLAGe293b6550 [2020-08-21 18:15:39,790 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 18:15:39,791 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s4liff.c [2020-08-21 18:15:39,798 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dbcc09bb3/b2a1e61b02f1420f92915fb5d238d322/FLAGe293b6550 [2020-08-21 18:15:40,205 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dbcc09bb3/b2a1e61b02f1420f92915fb5d238d322 [2020-08-21 18:15:40,215 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 18:15:40,217 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 18:15:40,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 18:15:40,218 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 18:15:40,222 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 18:15:40,223 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:15:40" (1/1) ... [2020-08-21 18:15:40,226 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15c19b13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:15:40, skipping insertion in model container [2020-08-21 18:15:40,226 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:15:40" (1/1) ... [2020-08-21 18:15:40,234 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 18:15:40,252 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 18:15:40,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:15:40,488 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 18:15:40,511 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:15:40,527 INFO L208 MainTranslator]: Completed translation [2020-08-21 18:15:40,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:15:40 WrapperNode [2020-08-21 18:15:40,528 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 18:15:40,529 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 18:15:40,529 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 18:15:40,529 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 18:15:40,626 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:15:40" (1/1) ... [2020-08-21 18:15:40,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:15:40" (1/1) ... [2020-08-21 18:15:40,647 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:15:40" (1/1) ... [2020-08-21 18:15:40,647 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:15:40" (1/1) ... [2020-08-21 18:15:40,655 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:15:40" (1/1) ... [2020-08-21 18:15:40,661 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:15:40" (1/1) ... [2020-08-21 18:15:40,662 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:15:40" (1/1) ... [2020-08-21 18:15:40,665 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 18:15:40,665 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 18:15:40,665 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 18:15:40,666 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 18:15:40,666 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:15:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 18:15:40,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 18:15:40,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 18:15:40,725 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 18:15:40,726 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-21 18:15:40,726 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 18:15:40,726 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 18:15:40,726 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 18:15:40,726 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 18:15:40,726 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 18:15:40,727 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 18:15:40,728 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 18:15:40,728 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 18:15:40,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 18:15:40,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 18:15:40,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 18:15:40,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 18:15:40,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 18:15:40,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 18:15:40,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 18:15:41,015 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 18:15:41,016 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-08-21 18:15:41,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:15:41 BoogieIcfgContainer [2020-08-21 18:15:41,021 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 18:15:41,022 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 18:15:41,022 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 18:15:41,025 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 18:15:41,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 06:15:40" (1/3) ... [2020-08-21 18:15:41,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@914813 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:15:41, skipping insertion in model container [2020-08-21 18:15:41,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:15:40" (2/3) ... [2020-08-21 18:15:41,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@914813 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:15:41, skipping insertion in model container [2020-08-21 18:15:41,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:15:41" (3/3) ... [2020-08-21 18:15:41,029 INFO L109 eAbstractionObserver]: Analyzing ICFG s4liff.c [2020-08-21 18:15:41,042 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 18:15:41,051 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 18:15:41,077 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 18:15:41,118 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 18:15:41,118 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 18:15:41,119 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 18:15:41,119 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 18:15:41,119 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 18:15:41,119 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 18:15:41,120 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 18:15:41,120 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 18:15:41,141 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-08-21 18:15:41,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-21 18:15:41,149 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:15:41,150 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:15:41,150 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:15:41,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:15:41,157 INFO L82 PathProgramCache]: Analyzing trace with hash -88121349, now seen corresponding path program 1 times [2020-08-21 18:15:41,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:15:41,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1198865997] [2020-08-21 18:15:41,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:15:41,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:15:41,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:15:41,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:15:41,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 18:15:41,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:15:41,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:15:41,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1198865997] [2020-08-21 18:15:41,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:15:41,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 18:15:41,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844862708] [2020-08-21 18:15:41,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 18:15:41,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:15:41,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 18:15:41,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 18:15:41,460 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-08-21 18:15:41,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:15:41,573 INFO L93 Difference]: Finished difference Result 60 states and 77 transitions. [2020-08-21 18:15:41,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 18:15:41,575 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-08-21 18:15:41,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:15:41,584 INFO L225 Difference]: With dead ends: 60 [2020-08-21 18:15:41,584 INFO L226 Difference]: Without dead ends: 28 [2020-08-21 18:15:41,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 18:15:41,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-08-21 18:15:41,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-08-21 18:15:41,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-08-21 18:15:41,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2020-08-21 18:15:41,632 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 23 [2020-08-21 18:15:41,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:15:41,632 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2020-08-21 18:15:41,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 18:15:41,633 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-08-21 18:15:41,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-21 18:15:41,634 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:15:41,634 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:15:41,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 18:15:41,635 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:15:41,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:15:41,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1099238599, now seen corresponding path program 1 times [2020-08-21 18:15:41,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:15:41,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [564027472] [2020-08-21 18:15:41,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:15:41,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:15:41,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:15:41,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:15:41,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 18:15:41,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:15:41,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:15:41,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [564027472] [2020-08-21 18:15:41,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:15:41,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 18:15:41,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603678446] [2020-08-21 18:15:41,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 18:15:41,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:15:41,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 18:15:41,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 18:15:41,773 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 5 states. [2020-08-21 18:15:41,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:15:41,898 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2020-08-21 18:15:41,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 18:15:41,898 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-08-21 18:15:41,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:15:41,900 INFO L225 Difference]: With dead ends: 48 [2020-08-21 18:15:41,900 INFO L226 Difference]: Without dead ends: 35 [2020-08-21 18:15:41,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-21 18:15:41,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-08-21 18:15:41,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2020-08-21 18:15:41,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-08-21 18:15:41,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-08-21 18:15:41,910 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 23 [2020-08-21 18:15:41,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:15:41,910 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-08-21 18:15:41,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 18:15:41,911 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-08-21 18:15:41,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-21 18:15:41,912 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:15:41,912 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:15:41,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 18:15:41,913 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:15:41,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:15:41,913 INFO L82 PathProgramCache]: Analyzing trace with hash 188437731, now seen corresponding path program 1 times [2020-08-21 18:15:41,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:15:41,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1015057471] [2020-08-21 18:15:41,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:15:41,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 18:15:41,973 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 18:15:41,974 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 18:15:41,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 18:15:42,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 06:15:42 BoogieIcfgContainer [2020-08-21 18:15:42,003 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 18:15:42,016 INFO L168 Benchmark]: Toolchain (without parser) took 1796.74 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 101.1 MB in the beginning and 104.0 MB in the end (delta: -3.0 MB). Peak memory consumption was 59.9 MB. Max. memory is 7.1 GB. [2020-08-21 18:15:42,017 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-21 18:15:42,018 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.38 ms. Allocated memory is still 137.9 MB. Free memory was 100.9 MB in the beginning and 90.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-08-21 18:15:42,019 INFO L168 Benchmark]: Boogie Preprocessor took 136.02 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 90.2 MB in the beginning and 178.0 MB in the end (delta: -87.8 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-08-21 18:15:42,020 INFO L168 Benchmark]: RCFGBuilder took 355.38 ms. Allocated memory is still 200.8 MB. Free memory was 178.0 MB in the beginning and 160.4 MB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 7.1 GB. [2020-08-21 18:15:42,021 INFO L168 Benchmark]: TraceAbstraction took 990.04 ms. Allocated memory is still 200.8 MB. Free memory was 159.7 MB in the beginning and 104.0 MB in the end (delta: 55.6 MB). Peak memory consumption was 55.6 MB. Max. memory is 7.1 GB. [2020-08-21 18:15:42,025 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 310.38 ms. Allocated memory is still 137.9 MB. Free memory was 100.9 MB in the beginning and 90.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 136.02 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 90.2 MB in the beginning and 178.0 MB in the end (delta: -87.8 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 355.38 ms. Allocated memory is still 200.8 MB. Free memory was 178.0 MB in the beginning and 160.4 MB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 990.04 ms. Allocated memory is still 200.8 MB. Free memory was 159.7 MB in the beginning and 104.0 MB in the end (delta: 55.6 MB). Peak memory consumption was 55.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] sum[0] = N [L30] i=0 [L30] COND TRUE i