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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/nec11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:17:39,873 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:17:39,875 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:17:39,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:17:39,894 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:17:39,895 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:17:39,896 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:17:39,898 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:17:39,899 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:17:39,900 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:17:39,901 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:17:39,902 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:17:39,902 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:17:39,903 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:17:39,904 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:17:39,905 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:17:39,909 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:17:39,910 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:17:39,912 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:17:39,916 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:17:39,918 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:17:39,922 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:17:39,923 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:17:39,924 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:17:39,928 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 19:17:39,932 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:17:39,935 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:17:39,937 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:17:39,937 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:17:39,939 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:17:39,939 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:17:39,939 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:17:39,940 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:17:39,940 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:17:39,944 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:17:39,945 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:17:39,946 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 19:17:39,968 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:17:39,968 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:17:39,970 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:17:39,970 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:17:39,970 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:17:39,971 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:17:39,971 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:17:39,971 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:17:39,971 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:17:39,972 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:17:39,973 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:17:39,973 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:17:39,973 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:17:39,973 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:17:39,974 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:17:39,974 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:17:39,974 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:17:39,974 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:17:39,974 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:17:39,975 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:17:39,975 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:17:39,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:17:39,976 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:17:39,976 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:17:39,976 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:17:39,976 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:17:39,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:17:39,977 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:17:39,977 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:17:40,224 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:17:40,237 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:17:40,241 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:17:40,243 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:17:40,243 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:17:40,244 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/nec11.c [2019-10-13 19:17:40,322 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22cbd7715/19ab6441c6294146b92057d1253a2d94/FLAGba41d3621 [2019-10-13 19:17:40,802 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:17:40,804 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/nec11.c [2019-10-13 19:17:40,811 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22cbd7715/19ab6441c6294146b92057d1253a2d94/FLAGba41d3621 [2019-10-13 19:17:41,225 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22cbd7715/19ab6441c6294146b92057d1253a2d94 [2019-10-13 19:17:41,241 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:17:41,243 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:17:41,244 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:17:41,244 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:17:41,247 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:17:41,249 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:17:41" (1/1) ... [2019-10-13 19:17:41,254 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43a89818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:41, skipping insertion in model container [2019-10-13 19:17:41,255 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:17:41" (1/1) ... [2019-10-13 19:17:41,261 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:17:41,277 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:17:41,460 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:17:41,466 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:17:41,480 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:17:41,491 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:17:41,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:41 WrapperNode [2019-10-13 19:17:41,492 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:17:41,493 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:17:41,493 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:17:41,493 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:17:41,591 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:41" (1/1) ... [2019-10-13 19:17:41,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:41" (1/1) ... [2019-10-13 19:17:41,596 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:41" (1/1) ... [2019-10-13 19:17:41,596 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:41" (1/1) ... [2019-10-13 19:17:41,600 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:41" (1/1) ... [2019-10-13 19:17:41,606 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:41" (1/1) ... [2019-10-13 19:17:41,607 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:41" (1/1) ... [2019-10-13 19:17:41,608 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:17:41,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:17:41,608 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:17:41,608 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:17:41,609 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2019-10-13 19:17:41,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:17:41,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:17:41,659 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 19:17:41,659 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:17:41,659 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:17:41,659 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 19:17:41,660 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-10-13 19:17:41,660 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:17:41,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:17:41,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:17:41,838 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:17:41,838 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 19:17:41,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:17:41 BoogieIcfgContainer [2019-10-13 19:17:41,840 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:17:41,848 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:17:41,848 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:17:41,852 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:17:41,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:17:41" (1/3) ... [2019-10-13 19:17:41,856 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ff5ec8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:17:41, skipping insertion in model container [2019-10-13 19:17:41,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:41" (2/3) ... [2019-10-13 19:17:41,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ff5ec8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:17:41, skipping insertion in model container [2019-10-13 19:17:41,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:17:41" (3/3) ... [2019-10-13 19:17:41,859 INFO L109 eAbstractionObserver]: Analyzing ICFG nec11.c [2019-10-13 19:17:41,895 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:17:41,904 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:17:41,918 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:17:41,948 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:17:41,948 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:17:41,948 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:17:41,948 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:17:41,949 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:17:41,949 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:17:41,949 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:17:41,949 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:17:41,980 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-10-13 19:17:41,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-13 19:17:41,986 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:17:41,987 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:17:41,990 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:17:41,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:17:41,997 INFO L82 PathProgramCache]: Analyzing trace with hash -147882559, now seen corresponding path program 1 times [2019-10-13 19:17:42,006 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:17:42,006 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273640506] [2019-10-13 19:17:42,007 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:17:42,007 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:17:42,007 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:17:42,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:17:42,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:17:42,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:17:42,107 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273640506] [2019-10-13 19:17:42,108 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:17:42,109 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 19:17:42,109 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224565973] [2019-10-13 19:17:42,113 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 19:17:42,114 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:17:42,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 19:17:42,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 19:17:42,132 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2019-10-13 19:17:42,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:17:42,155 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2019-10-13 19:17:42,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 19:17:42,157 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-10-13 19:17:42,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:17:42,165 INFO L225 Difference]: With dead ends: 32 [2019-10-13 19:17:42,165 INFO L226 Difference]: Without dead ends: 13 [2019-10-13 19:17:42,169 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 19:17:42,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-10-13 19:17:42,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-10-13 19:17:42,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-10-13 19:17:42,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2019-10-13 19:17:42,207 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2019-10-13 19:17:42,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:17:42,208 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2019-10-13 19:17:42,208 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 19:17:42,208 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2019-10-13 19:17:42,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-13 19:17:42,209 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:17:42,209 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:17:42,210 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:17:42,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:17:42,210 INFO L82 PathProgramCache]: Analyzing trace with hash -158041290, now seen corresponding path program 1 times [2019-10-13 19:17:42,210 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:17:42,211 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547715027] [2019-10-13 19:17:42,211 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:17:42,211 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:17:42,211 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:17:42,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-13 19:17:42,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-13 19:17:42,261 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-13 19:17:42,261 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-13 19:17:42,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:17:42 BoogieIcfgContainer [2019-10-13 19:17:42,281 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 19:17:42,284 INFO L168 Benchmark]: Toolchain (without parser) took 1040.24 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 102.5 MB in the beginning and 148.3 MB in the end (delta: -45.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 7.1 GB. [2019-10-13 19:17:42,285 INFO L168 Benchmark]: CDTParser took 0.49 ms. Allocated memory is still 138.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-13 19:17:42,286 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.52 ms. Allocated memory is still 138.9 MB. Free memory was 102.3 MB in the beginning and 92.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-10-13 19:17:42,287 INFO L168 Benchmark]: Boogie Preprocessor took 115.34 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 92.9 MB in the beginning and 180.6 MB in the end (delta: -87.7 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2019-10-13 19:17:42,288 INFO L168 Benchmark]: RCFGBuilder took 231.90 ms. Allocated memory is still 202.4 MB. Free memory was 180.6 MB in the beginning and 169.7 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2019-10-13 19:17:42,289 INFO L168 Benchmark]: TraceAbstraction took 433.12 ms. Allocated memory is still 202.4 MB. Free memory was 169.0 MB in the beginning and 148.3 MB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2019-10-13 19:17:42,298 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49 ms. Allocated memory is still 138.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 248.52 ms. Allocated memory is still 138.9 MB. Free memory was 102.3 MB in the beginning and 92.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.34 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 92.9 MB in the beginning and 180.6 MB in the end (delta: -87.7 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 231.90 ms. Allocated memory is still 202.4 MB. Free memory was 180.6 MB in the beginning and 169.7 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 433.12 ms. Allocated memory is still 202.4 MB. Free memory was 169.0 MB in the beginning and 148.3 MB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L13] int a[5]; [L14] int len=0; [L15] _Bool c=__VERIFIER_nondet_bool(); [L16] int i; VAL [c=0, len=0] [L19] COND FALSE !(\read(c)) VAL [c=0, len=0] [L28] CALL __VERIFIER_assert(len==5) VAL [\old(cond)=0] [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L5] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 21 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...