/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=NARROWEST --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/sina3f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 21:29:16,653 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 21:29:16,655 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 21:29:16,679 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 21:29:16,679 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 21:29:16,680 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 21:29:16,682 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 21:29:16,683 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 21:29:16,688 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 21:29:16,689 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 21:29:16,693 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 21:29:16,694 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 21:29:16,695 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 21:29:16,695 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 21:29:16,696 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 21:29:16,699 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 21:29:16,700 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 21:29:16,701 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 21:29:16,705 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 21:29:16,709 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 21:29:16,711 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 21:29:16,715 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 21:29:16,716 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 21:29:16,718 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 21:29:16,720 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 21:29:16,721 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 21:29:16,721 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 21:29:16,724 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 21:29:16,725 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 21:29:16,726 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-21 21:29:16,741 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 21:29:16,742 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 21:29:16,742 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 21:29:16,744 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 21:29:16,783 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 21:29:16,783 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 21:29:16,785 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 21:29:16,786 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 21:29:16,786 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 21:29:16,786 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 21:29:16,786 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 21:29:16,786 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 21:29:16,787 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 21:29:16,787 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 21:29:16,788 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 21:29:16,788 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 21:29:16,788 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 21:29:16,789 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 21:29:16,789 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 21:29:16,789 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 21:29:16,789 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 21:29:16,790 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 21:29:16,790 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 21:29:16,790 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 21:29:16,790 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 21:29:16,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 21:29:16,791 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 21:29:16,791 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 21:29:16,791 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 21:29:16,792 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 21:29:16,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 21:29:16,792 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 21:29:16,792 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 21:29:16,792 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=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; [2020-08-21 21:29:17,130 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 21:29:17,142 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 21:29:17,145 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 21:29:17,147 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 21:29:17,147 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 21:29:17,148 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sina3f.c [2020-08-21 21:29:17,220 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8497c4dd1/4bc76caf8b3d45a18d9cf0d3f4506eee/FLAGabcf52c26 [2020-08-21 21:29:17,719 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 21:29:17,719 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/sina3f.c [2020-08-21 21:29:17,730 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8497c4dd1/4bc76caf8b3d45a18d9cf0d3f4506eee/FLAGabcf52c26 [2020-08-21 21:29:18,076 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8497c4dd1/4bc76caf8b3d45a18d9cf0d3f4506eee [2020-08-21 21:29:18,086 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 21:29:18,087 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 21:29:18,088 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 21:29:18,088 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 21:29:18,092 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 21:29:18,093 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:29:18" (1/1) ... [2020-08-21 21:29:18,096 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@478ac3cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:29:18, skipping insertion in model container [2020-08-21 21:29:18,097 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:29:18" (1/1) ... [2020-08-21 21:29:18,105 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 21:29:18,125 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 21:29:18,322 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:29:18,329 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 21:29:18,350 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:29:18,445 INFO L208 MainTranslator]: Completed translation [2020-08-21 21:29:18,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:29:18 WrapperNode [2020-08-21 21:29:18,447 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 21:29:18,451 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 21:29:18,452 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 21:29:18,452 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 21:29:18,464 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:29:18" (1/1) ... [2020-08-21 21:29:18,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:29:18" (1/1) ... [2020-08-21 21:29:18,472 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:29:18" (1/1) ... [2020-08-21 21:29:18,473 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:29:18" (1/1) ... [2020-08-21 21:29:18,482 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:29:18" (1/1) ... [2020-08-21 21:29:18,488 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:29:18" (1/1) ... [2020-08-21 21:29:18,490 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:29:18" (1/1) ... [2020-08-21 21:29:18,492 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 21:29:18,493 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 21:29:18,493 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 21:29:18,493 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 21:29:18,494 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:29:18" (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 21:29:18,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 21:29:18,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 21:29:18,559 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 21:29:18,559 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-21 21:29:18,559 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 21:29:18,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 21:29:18,559 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 21:29:18,559 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 21:29:18,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 21:29:18,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 21:29:18,560 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 21:29:18,560 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 21:29:18,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 21:29:18,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 21:29:18,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 21:29:18,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 21:29:18,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 21:29:18,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 21:29:18,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 21:29:18,867 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 21:29:18,868 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 21:29:18,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:29:18 BoogieIcfgContainer [2020-08-21 21:29:18,873 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 21:29:18,885 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 21:29:18,885 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 21:29:18,894 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 21:29:18,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 09:29:18" (1/3) ... [2020-08-21 21:29:18,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71db6ec0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:29:18, skipping insertion in model container [2020-08-21 21:29:18,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:29:18" (2/3) ... [2020-08-21 21:29:18,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71db6ec0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:29:18, skipping insertion in model container [2020-08-21 21:29:18,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:29:18" (3/3) ... [2020-08-21 21:29:18,900 INFO L109 eAbstractionObserver]: Analyzing ICFG sina3f.c [2020-08-21 21:29:18,927 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 21:29:18,940 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 21:29:18,955 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 21:29:18,980 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 21:29:18,981 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 21:29:18,981 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 21:29:18,981 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 21:29:18,981 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 21:29:18,981 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 21:29:18,981 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 21:29:18,981 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 21:29:19,001 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-08-21 21:29:19,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-21 21:29:19,008 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:29:19,010 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] [2020-08-21 21:29:19,010 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:29:19,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:29:19,017 INFO L82 PathProgramCache]: Analyzing trace with hash -173101897, now seen corresponding path program 1 times [2020-08-21 21:29:19,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:29:19,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [738865021] [2020-08-21 21:29:19,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:29:19,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:29:19,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:29:19,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:29:19,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 21:29:19,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:29:19,220 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 21:29:19,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [738865021] [2020-08-21 21:29:19,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:29:19,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 21:29:19,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626437882] [2020-08-21 21:29:19,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 21:29:19,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:29:19,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 21:29:19,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 21:29:19,248 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2020-08-21 21:29:19,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:29:19,379 INFO L93 Difference]: Finished difference Result 70 states and 93 transitions. [2020-08-21 21:29:19,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 21:29:19,381 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-08-21 21:29:19,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:29:19,392 INFO L225 Difference]: With dead ends: 70 [2020-08-21 21:29:19,392 INFO L226 Difference]: Without dead ends: 35 [2020-08-21 21:29:19,397 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 21:29:19,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-08-21 21:29:19,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-08-21 21:29:19,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-08-21 21:29:19,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-08-21 21:29:19,446 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 26 [2020-08-21 21:29:19,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:29:19,447 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-08-21 21:29:19,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 21:29:19,448 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-08-21 21:29:19,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-21 21:29:19,449 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:29:19,449 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] [2020-08-21 21:29:19,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 21:29:19,450 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:29:19,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:29:19,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1503462707, now seen corresponding path program 1 times [2020-08-21 21:29:19,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:29:19,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [335400767] [2020-08-21 21:29:19,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:29:19,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:29:19,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:29:19,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:29:19,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 21:29:19,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:29:19,568 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 21:29:19,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [335400767] [2020-08-21 21:29:19,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:29:19,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 21:29:19,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418282114] [2020-08-21 21:29:19,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 21:29:19,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:29:19,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 21:29:19,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 21:29:19,573 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 5 states. [2020-08-21 21:29:19,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:29:19,737 INFO L93 Difference]: Finished difference Result 67 states and 79 transitions. [2020-08-21 21:29:19,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 21:29:19,738 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-08-21 21:29:19,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:29:19,741 INFO L225 Difference]: With dead ends: 67 [2020-08-21 21:29:19,741 INFO L226 Difference]: Without dead ends: 47 [2020-08-21 21:29:19,743 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 21:29:19,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-08-21 21:29:19,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 39. [2020-08-21 21:29:19,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-08-21 21:29:19,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-08-21 21:29:19,759 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 26 [2020-08-21 21:29:19,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:29:19,759 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-08-21 21:29:19,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 21:29:19,760 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-08-21 21:29:19,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-21 21:29:19,761 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:29:19,761 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] [2020-08-21 21:29:19,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 21:29:19,762 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:29:19,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:29:19,763 INFO L82 PathProgramCache]: Analyzing trace with hash -260192085, now seen corresponding path program 1 times [2020-08-21 21:29:19,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:29:19,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146681843] [2020-08-21 21:29:19,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:29:19,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 21:29:19,850 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 21:29:19,850 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 21:29:19,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 21:29:19,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 09:29:19 BoogieIcfgContainer [2020-08-21 21:29:19,882 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 21:29:19,895 INFO L168 Benchmark]: Toolchain (without parser) took 1805.09 ms. Allocated memory was 140.5 MB in the beginning and 201.3 MB in the end (delta: 60.8 MB). Free memory was 101.9 MB in the beginning and 95.5 MB in the end (delta: 6.4 MB). Peak memory consumption was 67.2 MB. Max. memory is 7.1 GB. [2020-08-21 21:29:19,897 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 21:29:19,899 INFO L168 Benchmark]: CACSL2BoogieTranslator took 362.82 ms. Allocated memory was 140.5 MB in the beginning and 201.3 MB in the end (delta: 60.8 MB). Free memory was 101.7 MB in the beginning and 180.2 MB in the end (delta: -78.5 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-08-21 21:29:19,899 INFO L168 Benchmark]: Boogie Preprocessor took 41.04 ms. Allocated memory is still 201.3 MB. Free memory was 180.2 MB in the beginning and 178.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-08-21 21:29:19,901 INFO L168 Benchmark]: RCFGBuilder took 380.47 ms. Allocated memory is still 201.3 MB. Free memory was 178.0 MB in the beginning and 158.8 MB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 7.1 GB. [2020-08-21 21:29:19,903 INFO L168 Benchmark]: TraceAbstraction took 1005.24 ms. Allocated memory is still 201.3 MB. Free memory was 158.2 MB in the beginning and 95.5 MB in the end (delta: 62.7 MB). Peak memory consumption was 62.7 MB. Max. memory is 7.1 GB. [2020-08-21 21:29:19,912 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 362.82 ms. Allocated memory was 140.5 MB in the beginning and 201.3 MB in the end (delta: 60.8 MB). Free memory was 101.7 MB in the beginning and 180.2 MB in the end (delta: -78.5 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 41.04 ms. Allocated memory is still 201.3 MB. Free memory was 180.2 MB in the beginning and 178.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 380.47 ms. Allocated memory is still 201.3 MB. Free memory was 178.0 MB in the beginning and 158.8 MB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1005.24 ms. Allocated memory is still 201.3 MB. Free memory was 158.2 MB in the beginning and 95.5 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] int *b = malloc(sizeof(int)*N); [L30] sum[0] = 1 [L31] i=0 [L31] COND TRUE i