/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=LOWLEXORDER -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/sina4f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 18:48:34,670 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 18:48:34,673 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 18:48:34,696 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 18:48:34,696 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 18:48:34,697 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 18:48:34,699 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 18:48:34,701 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 18:48:34,702 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 18:48:34,703 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 18:48:34,704 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 18:48:34,705 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 18:48:34,706 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 18:48:34,707 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 18:48:34,708 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 18:48:34,709 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 18:48:34,710 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 18:48:34,710 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 18:48:34,712 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 18:48:34,714 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 18:48:34,716 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 18:48:34,717 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 18:48:34,718 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 18:48:34,719 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 18:48:34,721 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 18:48:34,729 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 18:48:34,729 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 18:48:34,730 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 18:48:34,731 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 18:48:34,778 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 18:48:34,778 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 18:48:34,781 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 18:48:34,781 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 18:48:34,781 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 18:48:34,782 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 18:48:34,782 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 18:48:34,782 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 18:48:34,783 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 18:48:34,783 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 18:48:34,784 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 18:48:34,784 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 18:48:34,784 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 18:48:34,785 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 18:48:34,785 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 18:48:34,786 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 18:48:34,786 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 18:48:34,786 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 18:48:34,786 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 18:48:34,786 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 18:48:34,787 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 18:48:34,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 18:48:34,787 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 18:48:34,787 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 18:48:34,788 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 18:48:34,788 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 18:48:34,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 18:48:34,788 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 18:48:34,788 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 18:48:34,788 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=LOWLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=LOWLEXORDER; [2020-08-18 18:48:35,117 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 18:48:35,135 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 18:48:35,141 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 18:48:35,142 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 18:48:35,143 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 18:48:35,144 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sina4f.c [2020-08-18 18:48:35,205 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a1abbaf45/6a9e616e6cf8440c894d9e152ff24e21/FLAGe4f6163ce [2020-08-18 18:48:35,656 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 18:48:35,657 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/sina4f.c [2020-08-18 18:48:35,664 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a1abbaf45/6a9e616e6cf8440c894d9e152ff24e21/FLAGe4f6163ce [2020-08-18 18:48:36,074 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a1abbaf45/6a9e616e6cf8440c894d9e152ff24e21 [2020-08-18 18:48:36,084 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 18:48:36,085 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 18:48:36,088 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 18:48:36,088 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 18:48:36,092 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 18:48:36,093 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:48:36" (1/1) ... [2020-08-18 18:48:36,095 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@681cf6ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:48:36, skipping insertion in model container [2020-08-18 18:48:36,096 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:48:36" (1/1) ... [2020-08-18 18:48:36,104 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 18:48:36,125 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 18:48:36,327 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:48:36,339 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 18:48:36,363 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:48:36,475 INFO L208 MainTranslator]: Completed translation [2020-08-18 18:48:36,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:48:36 WrapperNode [2020-08-18 18:48:36,476 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 18:48:36,478 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 18:48:36,478 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 18:48:36,478 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 18:48:36,490 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:48:36" (1/1) ... [2020-08-18 18:48:36,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:48:36" (1/1) ... [2020-08-18 18:48:36,502 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:48:36" (1/1) ... [2020-08-18 18:48:36,502 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:48:36" (1/1) ... [2020-08-18 18:48:36,512 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:48:36" (1/1) ... [2020-08-18 18:48:36,518 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:48:36" (1/1) ... [2020-08-18 18:48:36,523 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:48:36" (1/1) ... [2020-08-18 18:48:36,526 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 18:48:36,526 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 18:48:36,527 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 18:48:36,527 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 18:48:36,528 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:48:36" (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 18:48:36,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 18:48:36,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 18:48:36,590 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 18:48:36,590 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-18 18:48:36,590 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 18:48:36,590 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 18:48:36,590 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 18:48:36,591 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 18:48:36,591 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-18 18:48:36,591 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 18:48:36,591 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 18:48:36,591 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 18:48:36,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 18:48:36,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 18:48:36,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 18:48:36,592 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 18:48:36,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 18:48:36,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 18:48:36,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 18:48:36,890 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 18:48:36,890 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 18:48:36,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:48:36 BoogieIcfgContainer [2020-08-18 18:48:36,895 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 18:48:36,896 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 18:48:36,896 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 18:48:36,900 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 18:48:36,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 06:48:36" (1/3) ... [2020-08-18 18:48:36,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ae330cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:48:36, skipping insertion in model container [2020-08-18 18:48:36,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:48:36" (2/3) ... [2020-08-18 18:48:36,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ae330cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:48:36, skipping insertion in model container [2020-08-18 18:48:36,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:48:36" (3/3) ... [2020-08-18 18:48:36,904 INFO L109 eAbstractionObserver]: Analyzing ICFG sina4f.c [2020-08-18 18:48:36,917 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 18:48:36,926 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 18:48:36,945 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 18:48:36,973 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 18:48:36,973 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 18:48:36,973 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 18:48:36,973 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 18:48:36,974 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 18:48:36,974 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 18:48:36,974 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 18:48:36,974 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 18:48:36,999 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-08-18 18:48:37,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-18 18:48:37,006 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:48:37,007 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 18:48:37,011 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:48:37,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:48:37,028 INFO L82 PathProgramCache]: Analyzing trace with hash -173101897, now seen corresponding path program 1 times [2020-08-18 18:48:37,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:48:37,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051407870] [2020-08-18 18:48:37,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:48:37,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:48:37,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:48:37,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:48:37,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 18:48:37,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:48:37,271 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 18:48:37,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051407870] [2020-08-18 18:48:37,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:48:37,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 18:48:37,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121632806] [2020-08-18 18:48:37,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 18:48:37,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:48:37,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 18:48:37,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 18:48:37,301 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2020-08-18 18:48:37,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:48:37,438 INFO L93 Difference]: Finished difference Result 70 states and 93 transitions. [2020-08-18 18:48:37,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 18:48:37,440 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-08-18 18:48:37,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:48:37,450 INFO L225 Difference]: With dead ends: 70 [2020-08-18 18:48:37,451 INFO L226 Difference]: Without dead ends: 35 [2020-08-18 18:48:37,455 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 18:48:37,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-08-18 18:48:37,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-08-18 18:48:37,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-08-18 18:48:37,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-08-18 18:48:37,501 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 26 [2020-08-18 18:48:37,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:48:37,502 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-08-18 18:48:37,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 18:48:37,503 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-08-18 18:48:37,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-18 18:48:37,504 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:48:37,504 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 18:48:37,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 18:48:37,505 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:48:37,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:48:37,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1503462707, now seen corresponding path program 1 times [2020-08-18 18:48:37,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:48:37,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1375935103] [2020-08-18 18:48:37,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:48:37,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:48:37,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:48:37,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:48:37,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 18:48:37,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:48:37,665 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 18:48:37,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1375935103] [2020-08-18 18:48:37,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:48:37,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 18:48:37,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150732520] [2020-08-18 18:48:37,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 18:48:37,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:48:37,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 18:48:37,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 18:48:37,670 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 5 states. [2020-08-18 18:48:37,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:48:37,847 INFO L93 Difference]: Finished difference Result 67 states and 79 transitions. [2020-08-18 18:48:37,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 18:48:37,848 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-08-18 18:48:37,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:48:37,852 INFO L225 Difference]: With dead ends: 67 [2020-08-18 18:48:37,852 INFO L226 Difference]: Without dead ends: 47 [2020-08-18 18:48:37,853 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 18:48:37,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-08-18 18:48:37,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 39. [2020-08-18 18:48:37,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-08-18 18:48:37,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-08-18 18:48:37,871 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 26 [2020-08-18 18:48:37,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:48:37,871 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-08-18 18:48:37,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 18:48:37,872 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-08-18 18:48:37,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-18 18:48:37,873 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:48:37,876 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:48:37,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 18:48:37,876 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:48:37,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:48:37,877 INFO L82 PathProgramCache]: Analyzing trace with hash -260192085, now seen corresponding path program 1 times [2020-08-18 18:48:37,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:48:37,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [906376904] [2020-08-18 18:48:37,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:48:37,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 18:48:37,948 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 18:48:37,949 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 18:48:37,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 18:48:37,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 06:48:37 BoogieIcfgContainer [2020-08-18 18:48:37,979 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 18:48:37,982 INFO L168 Benchmark]: Toolchain (without parser) took 1896.09 ms. Allocated memory was 143.1 MB in the beginning and 201.9 MB in the end (delta: 58.7 MB). Free memory was 102.1 MB in the beginning and 95.3 MB in the end (delta: 6.8 MB). Peak memory consumption was 65.5 MB. Max. memory is 7.1 GB. [2020-08-18 18:48:37,983 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 143.1 MB. Free memory was 120.6 MB in the beginning and 120.1 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-08-18 18:48:37,985 INFO L168 Benchmark]: CACSL2BoogieTranslator took 388.53 ms. Allocated memory was 143.1 MB in the beginning and 201.9 MB in the end (delta: 58.7 MB). Free memory was 102.1 MB in the beginning and 179.7 MB in the end (delta: -77.6 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2020-08-18 18:48:37,986 INFO L168 Benchmark]: Boogie Preprocessor took 48.14 ms. Allocated memory is still 201.9 MB. Free memory was 179.7 MB in the beginning and 177.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-08-18 18:48:37,987 INFO L168 Benchmark]: RCFGBuilder took 368.87 ms. Allocated memory is still 201.9 MB. Free memory was 177.3 MB in the beginning and 158.0 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. [2020-08-18 18:48:37,988 INFO L168 Benchmark]: TraceAbstraction took 1083.14 ms. Allocated memory is still 201.9 MB. Free memory was 158.0 MB in the beginning and 95.3 MB in the end (delta: 62.7 MB). Peak memory consumption was 62.7 MB. Max. memory is 7.1 GB. [2020-08-18 18:48:37,992 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 143.1 MB. Free memory was 120.6 MB in the beginning and 120.1 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 388.53 ms. Allocated memory was 143.1 MB in the beginning and 201.9 MB in the end (delta: 58.7 MB). Free memory was 102.1 MB in the beginning and 179.7 MB in the end (delta: -77.6 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 48.14 ms. Allocated memory is still 201.9 MB. Free memory was 179.7 MB in the beginning and 177.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 368.87 ms. Allocated memory is still 201.9 MB. Free memory was 177.3 MB in the beginning and 158.0 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1083.14 ms. Allocated memory is still 201.9 MB. Free memory was 158.0 MB in the beginning and 95.3 MB in the end (delta: 62.7 MB). Peak memory consumption was 62.7 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); [L28] long long *b = malloc(sizeof(long long)*N); [L30] sum[0] = 0 [L31] i=0 [L31] COND TRUE i