/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/nec20.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 22:15:02,927 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 22:15:02,930 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 22:15:02,949 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 22:15:02,949 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 22:15:02,951 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 22:15:02,953 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 22:15:02,962 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 22:15:02,966 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 22:15:02,968 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 22:15:02,970 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 22:15:02,972 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 22:15:02,972 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 22:15:02,974 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 22:15:02,977 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 22:15:02,978 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 22:15:02,979 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 22:15:02,980 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 22:15:02,981 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 22:15:02,986 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 22:15:02,990 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 22:15:02,994 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 22:15:02,995 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 22:15:02,996 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 22:15:02,998 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-23 22:15:03,006 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-23 22:15:03,007 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-23 22:15:03,008 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-23 22:15:03,009 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 [2019-11-23 22:15:03,026 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 22:15:03,026 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 22:15:03,028 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-23 22:15:03,028 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-23 22:15:03,028 INFO L138 SettingsManager]: * Use SBE=true [2019-11-23 22:15:03,028 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 22:15:03,028 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 22:15:03,029 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 22:15:03,029 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 22:15:03,029 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 22:15:03,029 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 22:15:03,029 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 22:15:03,029 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 22:15:03,030 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-23 22:15:03,030 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 22:15:03,030 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 22:15:03,030 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-23 22:15:03,030 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 22:15:03,031 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 22:15:03,031 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-23 22:15:03,031 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 22:15:03,031 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 22:15:03,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 22:15:03,032 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 22:15:03,032 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 22:15:03,032 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 22:15:03,032 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-23 22:15:03,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 22:15:03,033 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 22:15:03,033 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 22:15:03,298 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 22:15:03,315 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 22:15:03,318 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 22:15:03,320 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 22:15:03,320 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 22:15:03,321 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/nec20.c [2019-11-23 22:15:03,386 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a428f8703/ec794d1c2d0d4ae086f0251c4570f365/FLAGb3d3504d5 [2019-11-23 22:15:03,794 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 22:15:03,794 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/nec20.c [2019-11-23 22:15:03,802 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a428f8703/ec794d1c2d0d4ae086f0251c4570f365/FLAGb3d3504d5 [2019-11-23 22:15:04,122 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a428f8703/ec794d1c2d0d4ae086f0251c4570f365 [2019-11-23 22:15:04,131 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 22:15:04,132 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 22:15:04,133 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 22:15:04,133 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 22:15:04,138 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 22:15:04,139 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:15:04" (1/1) ... [2019-11-23 22:15:04,142 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16fb8ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:04, skipping insertion in model container [2019-11-23 22:15:04,142 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:15:04" (1/1) ... [2019-11-23 22:15:04,150 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 22:15:04,166 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 22:15:04,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:15:04,375 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 22:15:04,391 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:15:04,403 INFO L208 MainTranslator]: Completed translation [2019-11-23 22:15:04,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:04 WrapperNode [2019-11-23 22:15:04,403 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 22:15:04,404 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 22:15:04,404 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 22:15:04,404 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 22:15:04,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:04" (1/1) ... [2019-11-23 22:15:04,415 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:04" (1/1) ... [2019-11-23 22:15:04,526 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 22:15:04,527 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 22:15:04,527 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 22:15:04,527 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 22:15:04,537 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:04" (1/1) ... [2019-11-23 22:15:04,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:04" (1/1) ... [2019-11-23 22:15:04,539 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:04" (1/1) ... [2019-11-23 22:15:04,539 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:04" (1/1) ... [2019-11-23 22:15:04,543 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:04" (1/1) ... [2019-11-23 22:15:04,547 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:04" (1/1) ... [2019-11-23 22:15:04,548 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:04" (1/1) ... [2019-11-23 22:15:04,550 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 22:15:04,550 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 22:15:04,551 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 22:15:04,551 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 22:15:04,551 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:04" (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 [2019-11-23 22:15:04,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 22:15:04,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 22:15:04,800 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 22:15:04,801 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-23 22:15:04,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:15:04 BoogieIcfgContainer [2019-11-23 22:15:04,808 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 22:15:04,809 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 22:15:04,809 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 22:15:04,816 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 22:15:04,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:15:04" (1/3) ... [2019-11-23 22:15:04,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e78224d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:15:04, skipping insertion in model container [2019-11-23 22:15:04,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:04" (2/3) ... [2019-11-23 22:15:04,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e78224d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:15:04, skipping insertion in model container [2019-11-23 22:15:04,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:15:04" (3/3) ... [2019-11-23 22:15:04,827 INFO L109 eAbstractionObserver]: Analyzing ICFG nec20.c [2019-11-23 22:15:04,851 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 22:15:04,860 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 22:15:04,885 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 22:15:04,916 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 22:15:04,916 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 22:15:04,916 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 22:15:04,916 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 22:15:04,916 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 22:15:04,917 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 22:15:04,917 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 22:15:04,917 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 22:15:04,934 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-11-23 22:15:04,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-23 22:15:04,941 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:15:04,941 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:15:04,942 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:15:04,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:15:04,947 INFO L82 PathProgramCache]: Analyzing trace with hash -592064849, now seen corresponding path program 1 times [2019-11-23 22:15:04,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:15:04,955 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944659351] [2019-11-23 22:15:04,955 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:15:05,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:15:05,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:15:05,242 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944659351] [2019-11-23 22:15:05,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:15:05,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-23 22:15:05,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962560274] [2019-11-23 22:15:05,248 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 22:15:05,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:15:05,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 22:15:05,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-23 22:15:05,261 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2019-11-23 22:15:05,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:15:05,348 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2019-11-23 22:15:05,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 22:15:05,350 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-11-23 22:15:05,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:15:05,361 INFO L225 Difference]: With dead ends: 43 [2019-11-23 22:15:05,361 INFO L226 Difference]: Without dead ends: 18 [2019-11-23 22:15:05,365 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-23 22:15:05,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-23 22:15:05,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 13. [2019-11-23 22:15:05,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-23 22:15:05,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2019-11-23 22:15:05,401 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2019-11-23 22:15:05,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:15:05,402 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2019-11-23 22:15:05,402 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 22:15:05,402 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2019-11-23 22:15:05,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-23 22:15:05,403 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:15:05,403 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:15:05,404 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:15:05,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:15:05,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1182942513, now seen corresponding path program 1 times [2019-11-23 22:15:05,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:15:05,405 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292552950] [2019-11-23 22:15:05,405 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:15:05,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:15:05,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:15:05,544 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292552950] [2019-11-23 22:15:05,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:15:05,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-23 22:15:05,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944705815] [2019-11-23 22:15:05,547 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 22:15:05,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:15:05,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 22:15:05,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-23 22:15:05,548 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 4 states. [2019-11-23 22:15:05,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:15:05,614 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2019-11-23 22:15:05,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 22:15:05,615 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-11-23 22:15:05,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:15:05,616 INFO L225 Difference]: With dead ends: 23 [2019-11-23 22:15:05,616 INFO L226 Difference]: Without dead ends: 19 [2019-11-23 22:15:05,617 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-23 22:15:05,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-11-23 22:15:05,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 11. [2019-11-23 22:15:05,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-23 22:15:05,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2019-11-23 22:15:05,622 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 9 [2019-11-23 22:15:05,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:15:05,622 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2019-11-23 22:15:05,622 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 22:15:05,623 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2019-11-23 22:15:05,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-23 22:15:05,623 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:15:05,623 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:15:05,624 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:15:05,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:15:05,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1172475752, now seen corresponding path program 1 times [2019-11-23 22:15:05,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:15:05,625 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560228829] [2019-11-23 22:15:05,625 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:15:05,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-23 22:15:05,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-23 22:15:05,686 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-23 22:15:05,686 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-23 22:15:05,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 10:15:05 BoogieIcfgContainer [2019-11-23 22:15:05,710 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-23 22:15:05,712 INFO L168 Benchmark]: Toolchain (without parser) took 1579.37 ms. Allocated memory was 145.8 MB in the beginning and 204.5 MB in the end (delta: 58.7 MB). Free memory was 104.2 MB in the beginning and 122.5 MB in the end (delta: -18.3 MB). Peak memory consumption was 40.4 MB. Max. memory is 7.1 GB. [2019-11-23 22:15:05,713 INFO L168 Benchmark]: CDTParser took 1.41 ms. Allocated memory is still 145.8 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-23 22:15:05,714 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.37 ms. Allocated memory is still 145.8 MB. Free memory was 103.7 MB in the beginning and 93.9 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2019-11-23 22:15:05,715 INFO L168 Benchmark]: Boogie Procedure Inliner took 122.71 ms. Allocated memory was 145.8 MB in the beginning and 204.5 MB in the end (delta: 58.7 MB). Free memory was 93.9 MB in the beginning and 183.6 MB in the end (delta: -89.7 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2019-11-23 22:15:05,716 INFO L168 Benchmark]: Boogie Preprocessor took 22.99 ms. Allocated memory is still 204.5 MB. Free memory was 183.6 MB in the beginning and 181.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2019-11-23 22:15:05,717 INFO L168 Benchmark]: RCFGBuilder took 257.32 ms. Allocated memory is still 204.5 MB. Free memory was 181.9 MB in the beginning and 170.0 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. [2019-11-23 22:15:05,718 INFO L168 Benchmark]: TraceAbstraction took 901.44 ms. Allocated memory is still 204.5 MB. Free memory was 169.3 MB in the beginning and 122.5 MB in the end (delta: 46.8 MB). Peak memory consumption was 46.8 MB. Max. memory is 7.1 GB. [2019-11-23 22:15:05,722 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.41 ms. Allocated memory is still 145.8 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 270.37 ms. Allocated memory is still 145.8 MB. Free memory was 103.7 MB in the beginning and 93.9 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 122.71 ms. Allocated memory was 145.8 MB in the beginning and 204.5 MB in the end (delta: 58.7 MB). Free memory was 93.9 MB in the beginning and 183.6 MB in the end (delta: -89.7 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 22.99 ms. Allocated memory is still 204.5 MB. Free memory was 183.6 MB in the beginning and 181.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 257.32 ms. Allocated memory is still 204.5 MB. Free memory was 181.9 MB in the beginning and 170.0 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 901.44 ms. Allocated memory is still 204.5 MB. Free memory was 169.3 MB in the beginning and 122.5 MB in the end (delta: 46.8 MB). Peak memory consumption was 46.8 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: [L10] int b; VAL [b=0] [L13] _Bool k=__VERIFIER_nondet_bool(); [L14] unsigned int i,n,j; [L15] int a[1025]; VAL [b=0] [L17] COND TRUE \read(k) [L18] n=0 VAL [b=0] [L23] i=0 [L24] j=__VERIFIER_nondet_uint() [L25] COND FALSE !(j > 10000) VAL [b=0] [L28] COND TRUE i <= n [L29] i++ [L30] j= j +2 VAL [b=0] [L28] COND FALSE !(i <= n) VAL [b=0] [L33] a[i]=0 [L5] COND TRUE !(cond) VAL [b=0] [L6] __VERIFIER_error() VAL [b=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 42 SDtfs, 27 SDslu, 47 SDs, 0 SdLazy, 31 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred 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, 2 MinimizatonAttempts, 13 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 736 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...