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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/loops/sum_array-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c6af20d [2019-09-03 20:36:52,759 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-03 20:36:52,761 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-03 20:36:52,780 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-03 20:36:52,781 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-03 20:36:52,782 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-03 20:36:52,784 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-03 20:36:52,786 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-03 20:36:52,795 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-03 20:36:52,796 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-03 20:36:52,799 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-03 20:36:52,802 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-03 20:36:52,802 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-03 20:36:52,805 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-03 20:36:52,808 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-03 20:36:52,810 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-03 20:36:52,812 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-03 20:36:52,814 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-03 20:36:52,816 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-03 20:36:52,822 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-03 20:36:52,826 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-03 20:36:52,829 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-03 20:36:52,832 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-03 20:36:52,833 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-03 20:36:52,836 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-03 20:36:52,842 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-03 20:36:52,844 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-03 20:36:52,844 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-03 20:36:52,845 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-03 20:36:52,847 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-03 20:36:52,848 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-03 20:36:52,848 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-03 20:36:52,848 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-03 20:36:52,849 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-03 20:36:52,849 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-03 20:36:52,850 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-03 20:36:52,851 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-03 20:36:52,869 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-03 20:36:52,869 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-03 20:36:52,870 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-03 20:36:52,870 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-03 20:36:52,871 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-03 20:36:52,871 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-03 20:36:52,871 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-03 20:36:52,871 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-03 20:36:52,871 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-03 20:36:52,872 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-03 20:36:52,872 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-03 20:36:52,873 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-03 20:36:52,873 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-03 20:36:52,873 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-03 20:36:52,873 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-03 20:36:52,873 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-03 20:36:52,874 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-03 20:36:52,874 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-03 20:36:52,874 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-03 20:36:52,874 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-03 20:36:52,874 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-03 20:36:52,875 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-03 20:36:52,875 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-03 20:36:52,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-03 20:36:52,875 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-03 20:36:52,875 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-03 20:36:52,876 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-03 20:36:52,876 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-03 20:36:52,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-03 20:36:52,876 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-03 20:36:52,931 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-03 20:36:52,950 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-03 20:36:52,953 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-03 20:36:52,955 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-03 20:36:52,956 INFO L275 PluginConnector]: CDTParser initialized [2019-09-03 20:36:52,957 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum_array-1.c [2019-09-03 20:36:53,027 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/482f78d89/8446739b5cb448adbabccc203d01afba/FLAGa440e124d [2019-09-03 20:36:53,503 INFO L306 CDTParser]: Found 1 translation units. [2019-09-03 20:36:53,504 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum_array-1.c [2019-09-03 20:36:53,511 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/482f78d89/8446739b5cb448adbabccc203d01afba/FLAGa440e124d [2019-09-03 20:36:53,837 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/482f78d89/8446739b5cb448adbabccc203d01afba [2019-09-03 20:36:53,847 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-03 20:36:53,848 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-03 20:36:53,849 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-03 20:36:53,849 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-03 20:36:53,856 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-03 20:36:53,858 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 08:36:53" (1/1) ... [2019-09-03 20:36:53,861 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c54f8b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:36:53, skipping insertion in model container [2019-09-03 20:36:53,861 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 08:36:53" (1/1) ... [2019-09-03 20:36:53,870 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-03 20:36:53,895 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-03 20:36:54,175 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 20:36:54,182 INFO L188 MainTranslator]: Completed pre-run [2019-09-03 20:36:54,210 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 20:36:54,329 INFO L192 MainTranslator]: Completed translation [2019-09-03 20:36:54,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:36:54 WrapperNode [2019-09-03 20:36:54,330 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-03 20:36:54,331 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-03 20:36:54,331 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-03 20:36:54,332 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-03 20:36:54,347 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:36:54" (1/1) ... [2019-09-03 20:36:54,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:36:54" (1/1) ... [2019-09-03 20:36:54,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:36:54" (1/1) ... [2019-09-03 20:36:54,360 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:36:54" (1/1) ... [2019-09-03 20:36:54,368 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:36:54" (1/1) ... [2019-09-03 20:36:54,378 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:36:54" (1/1) ... [2019-09-03 20:36:54,379 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:36:54" (1/1) ... [2019-09-03 20:36:54,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-03 20:36:54,382 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-03 20:36:54,383 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-03 20:36:54,383 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-03 20:36:54,384 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:36:54" (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 [2019-09-03 20:36:54,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-03 20:36:54,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-03 20:36:54,438 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-03 20:36:54,438 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-03 20:36:54,438 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-03 20:36:54,439 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-03 20:36:54,439 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-03 20:36:54,439 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-09-03 20:36:54,439 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-03 20:36:54,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-03 20:36:54,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-03 20:36:54,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-03 20:36:54,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-03 20:36:54,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-03 20:36:54,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-03 20:36:54,738 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-03 20:36:54,738 INFO L283 CfgBuilder]: Removed 4 assume(true) statements. [2019-09-03 20:36:54,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 08:36:54 BoogieIcfgContainer [2019-09-03 20:36:54,740 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-03 20:36:54,741 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-03 20:36:54,741 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-03 20:36:54,745 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-03 20:36:54,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.09 08:36:53" (1/3) ... [2019-09-03 20:36:54,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70269011 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 08:36:54, skipping insertion in model container [2019-09-03 20:36:54,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:36:54" (2/3) ... [2019-09-03 20:36:54,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70269011 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 08:36:54, skipping insertion in model container [2019-09-03 20:36:54,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 08:36:54" (3/3) ... [2019-09-03 20:36:54,750 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_array-1.c [2019-09-03 20:36:54,761 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-03 20:36:54,775 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-03 20:36:54,792 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-03 20:36:54,820 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-03 20:36:54,820 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-03 20:36:54,821 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-03 20:36:54,821 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-03 20:36:54,821 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-03 20:36:54,821 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-03 20:36:54,821 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-03 20:36:54,821 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-03 20:36:54,836 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-09-03 20:36:54,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-03 20:36:54,846 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:36:54,847 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:36:54,849 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:36:54,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:36:54,855 INFO L82 PathProgramCache]: Analyzing trace with hash 415311520, now seen corresponding path program 1 times [2019-09-03 20:36:54,857 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 20:36:54,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:36:54,902 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:36:54,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:36:54,902 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 20:36:54,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:36:55,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 20:36:55,021 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 20:36:55,021 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-03 20:36:55,022 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-03 20:36:55,026 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-03 20:36:55,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-03 20:36:55,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-03 20:36:55,042 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2019-09-03 20:36:55,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:36:55,063 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2019-09-03 20:36:55,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-03 20:36:55,065 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2019-09-03 20:36:55,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:36:55,076 INFO L225 Difference]: With dead ends: 30 [2019-09-03 20:36:55,076 INFO L226 Difference]: Without dead ends: 25 [2019-09-03 20:36:55,078 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-03 20:36:55,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-09-03 20:36:55,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-09-03 20:36:55,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-09-03 20:36:55,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2019-09-03 20:36:55,123 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 17 [2019-09-03 20:36:55,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:36:55,124 INFO L475 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2019-09-03 20:36:55,124 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-03 20:36:55,124 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2019-09-03 20:36:55,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-03 20:36:55,125 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:36:55,125 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:36:55,126 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:36:55,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:36:55,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1687882214, now seen corresponding path program 1 times [2019-09-03 20:36:55,126 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 20:36:55,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:36:55,128 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:36:55,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:36:55,129 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 20:36:55,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:36:55,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 20:36:55,328 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 20:36:55,328 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-03 20:36:55,328 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-03 20:36:55,330 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-03 20:36:55,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-03 20:36:55,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-03 20:36:55,333 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 4 states. [2019-09-03 20:36:55,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:36:55,515 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2019-09-03 20:36:55,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-03 20:36:55,516 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2019-09-03 20:36:55,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:36:55,519 INFO L225 Difference]: With dead ends: 41 [2019-09-03 20:36:55,519 INFO L226 Difference]: Without dead ends: 35 [2019-09-03 20:36:55,520 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-03 20:36:55,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-09-03 20:36:55,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28. [2019-09-03 20:36:55,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-09-03 20:36:55,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2019-09-03 20:36:55,532 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 17 [2019-09-03 20:36:55,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:36:55,533 INFO L475 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2019-09-03 20:36:55,533 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-03 20:36:55,533 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2019-09-03 20:36:55,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-09-03 20:36:55,534 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:36:55,535 INFO L399 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] [2019-09-03 20:36:55,535 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:36:55,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:36:55,536 INFO L82 PathProgramCache]: Analyzing trace with hash -825329612, now seen corresponding path program 1 times [2019-09-03 20:36:55,536 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 20:36:55,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:36:55,537 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:36:55,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:36:55,538 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 20:36:55,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-03 20:36:55,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-03 20:36:55,808 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-03 20:36:55,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.09 08:36:55 BoogieIcfgContainer [2019-09-03 20:36:55,875 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-03 20:36:55,879 INFO L168 Benchmark]: Toolchain (without parser) took 2028.64 ms. Allocated memory was 138.9 MB in the beginning and 198.2 MB in the end (delta: 59.2 MB). Free memory was 86.9 MB in the beginning and 106.5 MB in the end (delta: -19.5 MB). Peak memory consumption was 39.7 MB. Max. memory is 7.1 GB. [2019-09-03 20:36:55,881 INFO L168 Benchmark]: CDTParser took 1.14 ms. Allocated memory is still 138.9 MB. Free memory was 104.9 MB in the beginning and 104.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-03 20:36:55,884 INFO L168 Benchmark]: CACSL2BoogieTranslator took 481.49 ms. Allocated memory was 138.9 MB in the beginning and 198.2 MB in the end (delta: 59.2 MB). Free memory was 86.7 MB in the beginning and 176.1 MB in the end (delta: -89.3 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2019-09-03 20:36:55,886 INFO L168 Benchmark]: Boogie Preprocessor took 51.20 ms. Allocated memory is still 198.2 MB. Free memory was 176.1 MB in the beginning and 173.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2019-09-03 20:36:55,888 INFO L168 Benchmark]: RCFGBuilder took 357.85 ms. Allocated memory is still 198.2 MB. Free memory was 173.8 MB in the beginning and 157.2 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB. [2019-09-03 20:36:55,890 INFO L168 Benchmark]: TraceAbstraction took 1133.86 ms. Allocated memory is still 198.2 MB. Free memory was 156.6 MB in the beginning and 106.5 MB in the end (delta: 50.2 MB). Peak memory consumption was 50.2 MB. Max. memory is 7.1 GB. [2019-09-03 20:36:55,902 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.14 ms. Allocated memory is still 138.9 MB. Free memory was 104.9 MB in the beginning and 104.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 481.49 ms. Allocated memory was 138.9 MB in the beginning and 198.2 MB in the end (delta: 59.2 MB). Free memory was 86.7 MB in the beginning and 176.1 MB in the end (delta: -89.3 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 51.20 ms. Allocated memory is still 198.2 MB. Free memory was 176.1 MB in the beginning and 173.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 357.85 ms. Allocated memory is still 198.2 MB. Free memory was 173.8 MB in the beginning and 157.2 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1133.86 ms. Allocated memory is still 198.2 MB. Free memory was 156.6 MB in the beginning and 106.5 MB in the end (delta: 50.2 MB). Peak memory consumption was 50.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] unsigned int M = __VERIFIER_nondet_uint(); [L15] int A[M], B[M], C[M]; [L16] unsigned int i; [L18] i=0 VAL [A={1:0}, B={-2:0}, C={-1:0}, i=0, M=1] [L18] COND TRUE i