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/loop-lit/gsv2008.c.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c6af20d [2019-09-03 19:54:17,910 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-03 19:54:17,912 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-03 19:54:17,929 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-03 19:54:17,930 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-03 19:54:17,931 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-03 19:54:17,933 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-03 19:54:17,946 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-03 19:54:17,947 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-03 19:54:17,949 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-03 19:54:17,952 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-03 19:54:17,954 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-03 19:54:17,954 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-03 19:54:17,957 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-03 19:54:17,959 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-03 19:54:17,962 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-03 19:54:17,962 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-03 19:54:17,966 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-03 19:54:17,968 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-03 19:54:17,972 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-03 19:54:17,976 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-03 19:54:17,977 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-03 19:54:17,978 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-03 19:54:17,981 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-03 19:54:17,983 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-03 19:54:17,996 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-03 19:54:17,998 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-03 19:54:17,999 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-03 19:54:18,000 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 [2019-09-03 19:54:18,028 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-03 19:54:18,029 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-03 19:54:18,031 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-03 19:54:18,031 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-03 19:54:18,032 INFO L138 SettingsManager]: * Use SBE=true [2019-09-03 19:54:18,032 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-03 19:54:18,032 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-03 19:54:18,032 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-03 19:54:18,032 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-03 19:54:18,033 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-03 19:54:18,034 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-03 19:54:18,034 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-03 19:54:18,034 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-03 19:54:18,035 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-03 19:54:18,035 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-03 19:54:18,035 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-03 19:54:18,035 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-03 19:54:18,035 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-03 19:54:18,036 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-03 19:54:18,036 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-03 19:54:18,036 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-03 19:54:18,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-03 19:54:18,036 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-03 19:54:18,037 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-03 19:54:18,037 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-03 19:54:18,037 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-03 19:54:18,037 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-03 19:54:18,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-03 19:54:18,038 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-03 19:54:18,090 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-03 19:54:18,102 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-03 19:54:18,105 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-03 19:54:18,107 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-03 19:54:18,107 INFO L275 PluginConnector]: CDTParser initialized [2019-09-03 19:54:18,108 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2019-09-03 19:54:18,166 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd1e7b61a/8fc8fd661f594a55b7ee85b51043f8f4/FLAG6a8423c85 [2019-09-03 19:54:18,572 INFO L306 CDTParser]: Found 1 translation units. [2019-09-03 19:54:18,572 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2019-09-03 19:54:18,582 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd1e7b61a/8fc8fd661f594a55b7ee85b51043f8f4/FLAG6a8423c85 [2019-09-03 19:54:18,994 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd1e7b61a/8fc8fd661f594a55b7ee85b51043f8f4 [2019-09-03 19:54:19,004 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-03 19:54:19,005 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-03 19:54:19,006 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-03 19:54:19,006 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-03 19:54:19,009 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-03 19:54:19,010 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 07:54:18" (1/1) ... [2019-09-03 19:54:19,013 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63481646 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:54:19, skipping insertion in model container [2019-09-03 19:54:19,013 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 07:54:18" (1/1) ... [2019-09-03 19:54:19,021 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-03 19:54:19,038 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-03 19:54:19,287 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 19:54:19,294 INFO L188 MainTranslator]: Completed pre-run [2019-09-03 19:54:19,324 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 19:54:19,342 INFO L192 MainTranslator]: Completed translation [2019-09-03 19:54:19,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:54:19 WrapperNode [2019-09-03 19:54:19,344 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-03 19:54:19,345 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-03 19:54:19,345 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-03 19:54:19,345 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-03 19:54:19,475 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:54:19" (1/1) ... [2019-09-03 19:54:19,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:54:19" (1/1) ... [2019-09-03 19:54:19,486 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:54:19" (1/1) ... [2019-09-03 19:54:19,488 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:54:19" (1/1) ... [2019-09-03 19:54:19,493 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:54:19" (1/1) ... [2019-09-03 19:54:19,496 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:54:19" (1/1) ... [2019-09-03 19:54:19,501 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:54:19" (1/1) ... [2019-09-03 19:54:19,503 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-03 19:54:19,506 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-03 19:54:19,507 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-03 19:54:19,507 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-03 19:54:19,509 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:54:19" (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 19:54:19,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-03 19:54:19,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-03 19:54:19,567 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-03 19:54:19,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-03 19:54:19,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-03 19:54:19,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-03 19:54:19,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-03 19:54:19,568 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-03 19:54:19,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-03 19:54:19,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-03 19:54:19,751 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-03 19:54:19,751 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-03 19:54:19,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 07:54:19 BoogieIcfgContainer [2019-09-03 19:54:19,753 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-03 19:54:19,754 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-03 19:54:19,754 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-03 19:54:19,757 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-03 19:54:19,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.09 07:54:18" (1/3) ... [2019-09-03 19:54:19,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21352c33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 07:54:19, skipping insertion in model container [2019-09-03 19:54:19,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:54:19" (2/3) ... [2019-09-03 19:54:19,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21352c33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 07:54:19, skipping insertion in model container [2019-09-03 19:54:19,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 07:54:19" (3/3) ... [2019-09-03 19:54:19,760 INFO L109 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.v+lhb-reducer.c [2019-09-03 19:54:19,769 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-03 19:54:19,776 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-03 19:54:19,792 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-03 19:54:19,821 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-03 19:54:19,821 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-03 19:54:19,822 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-03 19:54:19,822 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-03 19:54:19,822 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-03 19:54:19,822 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-03 19:54:19,822 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-03 19:54:19,823 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-03 19:54:19,823 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-03 19:54:19,840 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-09-03 19:54:19,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-03 19:54:19,846 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:54:19,847 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 19:54:19,849 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:54:19,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:54:19,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1883805102, now seen corresponding path program 1 times [2019-09-03 19:54:19,856 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:54:19,857 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:54:19,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:54:19,903 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 19:54:19,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:54:19,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:54:20,055 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 19:54:20,058 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 19:54:20,059 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-03 19:54:20,064 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-03 19:54:20,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-03 19:54:20,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-03 19:54:20,089 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 5 states. [2019-09-03 19:54:20,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 19:54:20,246 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2019-09-03 19:54:20,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-03 19:54:20,254 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-09-03 19:54:20,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 19:54:20,266 INFO L225 Difference]: With dead ends: 33 [2019-09-03 19:54:20,266 INFO L226 Difference]: Without dead ends: 16 [2019-09-03 19:54:20,271 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-09-03 19:54:20,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-09-03 19:54:20,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-09-03 19:54:20,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-09-03 19:54:20,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2019-09-03 19:54:20,305 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2019-09-03 19:54:20,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 19:54:20,306 INFO L475 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2019-09-03 19:54:20,306 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-03 19:54:20,307 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2019-09-03 19:54:20,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-09-03 19:54:20,308 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:54:20,308 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 19:54:20,309 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:54:20,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:54:20,309 INFO L82 PathProgramCache]: Analyzing trace with hash -2141584271, now seen corresponding path program 1 times [2019-09-03 19:54:20,310 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:54:20,310 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:54:20,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:54:20,311 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 19:54:20,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:54:20,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:54:20,423 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 19:54:20,423 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-03 19:54:20,424 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-03 19:54:20,450 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 19:54:20,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:54:20,489 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-03 19:54:20,495 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 19:54:20,559 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 19:54:20,589 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 19:54:20,597 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-03 19:54:20,597 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-03 19:54:20,598 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-03 19:54:20,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-03 19:54:20,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-09-03 19:54:20,599 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 9 states. [2019-09-03 19:54:20,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 19:54:20,720 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2019-09-03 19:54:20,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-03 19:54:20,720 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2019-09-03 19:54:20,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 19:54:20,721 INFO L225 Difference]: With dead ends: 19 [2019-09-03 19:54:20,721 INFO L226 Difference]: Without dead ends: 0 [2019-09-03 19:54:20,723 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2019-09-03 19:54:20,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-03 19:54:20,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-03 19:54:20,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-03 19:54:20,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-03 19:54:20,726 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2019-09-03 19:54:20,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 19:54:20,726 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-03 19:54:20,726 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-03 19:54:20,727 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-03 19:54:20,727 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-03 19:54:20,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-03 19:54:20,795 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-09-03 19:54:20,795 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-09-03 19:54:20,795 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-09-03 19:54:20,795 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-09-03 19:54:20,796 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-09-03 19:54:20,796 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-09-03 19:54:20,796 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-09-03 19:54:20,796 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 9 69) the Hoare annotation is: true [2019-09-03 19:54:20,796 INFO L443 ceAbstractionStarter]: For program point L27(lines 27 66) no Hoare annotation was computed. [2019-09-03 19:54:20,796 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 9 69) no Hoare annotation was computed. [2019-09-03 19:54:20,797 INFO L443 ceAbstractionStarter]: For program point L21(lines 21 67) no Hoare annotation was computed. [2019-09-03 19:54:20,797 INFO L443 ceAbstractionStarter]: For program point L52(line 52) no Hoare annotation was computed. [2019-09-03 19:54:20,797 INFO L443 ceAbstractionStarter]: For program point L50(lines 50 59) no Hoare annotation was computed. [2019-09-03 19:54:20,797 INFO L443 ceAbstractionStarter]: For program point L15(lines 15 68) no Hoare annotation was computed. [2019-09-03 19:54:20,797 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 9 69) no Hoare annotation was computed. [2019-09-03 19:54:20,798 INFO L439 ceAbstractionStarter]: At program point L41(lines 28 62) the Hoare annotation is: (or (and (<= (+ (div (+ (- main_~main__x~0) (- 2)) (- 2)) 1) main_~main__y~0) (<= (+ main_~main__x~0 2) main_~main__y~0)) (<= (+ main_~main__x~0 51) main_~main__y~0)) [2019-09-03 19:54:20,798 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 52) no Hoare annotation was computed. [2019-09-03 19:54:20,798 INFO L443 ceAbstractionStarter]: For program point L35(lines 35 61) no Hoare annotation was computed. [2019-09-03 19:54:20,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.09 07:54:20 BoogieIcfgContainer [2019-09-03 19:54:20,821 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-03 19:54:20,825 INFO L168 Benchmark]: Toolchain (without parser) took 1817.99 ms. Allocated memory was 132.1 MB in the beginning and 201.3 MB in the end (delta: 69.2 MB). Free memory was 88.3 MB in the beginning and 106.7 MB in the end (delta: -18.5 MB). Peak memory consumption was 50.8 MB. Max. memory is 7.1 GB. [2019-09-03 19:54:20,827 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 132.1 MB. Free memory was 106.4 MB in the beginning and 106.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-03 19:54:20,829 INFO L168 Benchmark]: CACSL2BoogieTranslator took 338.97 ms. Allocated memory is still 132.1 MB. Free memory was 88.1 MB in the beginning and 78.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2019-09-03 19:54:20,831 INFO L168 Benchmark]: Boogie Preprocessor took 158.03 ms. Allocated memory was 132.1 MB in the beginning and 201.3 MB in the end (delta: 69.2 MB). Free memory was 78.5 MB in the beginning and 177.7 MB in the end (delta: -99.2 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2019-09-03 19:54:20,832 INFO L168 Benchmark]: RCFGBuilder took 246.67 ms. Allocated memory is still 201.3 MB. Free memory was 177.7 MB in the beginning and 165.7 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. [2019-09-03 19:54:20,834 INFO L168 Benchmark]: TraceAbstraction took 1067.63 ms. Allocated memory is still 201.3 MB. Free memory was 165.7 MB in the beginning and 106.7 MB in the end (delta: 59.0 MB). Peak memory consumption was 59.0 MB. Max. memory is 7.1 GB. [2019-09-03 19:54:20,849 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 132.1 MB. Free memory was 106.4 MB in the beginning and 106.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 338.97 ms. Allocated memory is still 132.1 MB. Free memory was 88.1 MB in the beginning and 78.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 158.03 ms. Allocated memory was 132.1 MB in the beginning and 201.3 MB in the end (delta: 69.2 MB). Free memory was 78.5 MB in the beginning and 177.7 MB in the end (delta: -99.2 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 246.67 ms. Allocated memory is still 201.3 MB. Free memory was 177.7 MB in the beginning and 165.7 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1067.63 ms. Allocated memory is still 201.3 MB. Free memory was 165.7 MB in the beginning and 106.7 MB in the end (delta: 59.0 MB). Peak memory consumption was 59.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 52]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: ((-main__x + -2) / -2 + 1 <= main__y && main__x + 2 <= main__y) || main__x + 51 <= main__y - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 18 locations, 1 error locations. SAFE Result, 0.9s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 30 SDtfs, 15 SDslu, 76 SDs, 0 SdLazy, 41 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 7 NumberOfFragments, 26 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 13 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 1694 SizeOfPredicates, 4 NumberOfNonLiveVariables, 70 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/4 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...