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-industry-pattern/aiob_4.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c6af20d [2019-09-03 20:02:45,860 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-03 20:02:45,862 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-03 20:02:45,874 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-03 20:02:45,875 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-03 20:02:45,876 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-03 20:02:45,877 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-03 20:02:45,879 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-03 20:02:45,881 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-03 20:02:45,882 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-03 20:02:45,883 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-03 20:02:45,884 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-03 20:02:45,884 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-03 20:02:45,885 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-03 20:02:45,886 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-03 20:02:45,887 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-03 20:02:45,888 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-03 20:02:45,889 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-03 20:02:45,890 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-03 20:02:45,892 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-03 20:02:45,893 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-03 20:02:45,894 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-03 20:02:45,895 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-03 20:02:45,896 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-03 20:02:45,898 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-03 20:02:45,905 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-03 20:02:45,906 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-03 20:02:45,907 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-03 20:02:45,908 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 20:02:45,922 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-03 20:02:45,922 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-03 20:02:45,923 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-03 20:02:45,923 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-03 20:02:45,924 INFO L138 SettingsManager]: * Use SBE=true [2019-09-03 20:02:45,924 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-03 20:02:45,924 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-03 20:02:45,924 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-03 20:02:45,924 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-03 20:02:45,924 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-03 20:02:45,925 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-03 20:02:45,925 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-03 20:02:45,925 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-03 20:02:45,925 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-03 20:02:45,925 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-03 20:02:45,926 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-03 20:02:45,926 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-03 20:02:45,926 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-03 20:02:45,926 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-03 20:02:45,926 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-03 20:02:45,927 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-03 20:02:45,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-03 20:02:45,927 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-03 20:02:45,927 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-03 20:02:45,927 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-03 20:02:45,928 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-03 20:02:45,928 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-03 20:02:45,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-03 20:02:45,928 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-03 20:02:45,958 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-03 20:02:45,971 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-03 20:02:45,974 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-03 20:02:45,976 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-03 20:02:45,976 INFO L275 PluginConnector]: CDTParser initialized [2019-09-03 20:02:45,977 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c [2019-09-03 20:02:46,052 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb4d298d4/533c06478ead4e34bd15136c16563c01/FLAG06172d07f [2019-09-03 20:02:46,545 INFO L306 CDTParser]: Found 1 translation units. [2019-09-03 20:02:46,545 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c [2019-09-03 20:02:46,563 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb4d298d4/533c06478ead4e34bd15136c16563c01/FLAG06172d07f [2019-09-03 20:02:46,858 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb4d298d4/533c06478ead4e34bd15136c16563c01 [2019-09-03 20:02:46,868 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-03 20:02:46,869 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-03 20:02:46,870 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-03 20:02:46,871 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-03 20:02:46,874 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-03 20:02:46,875 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 08:02:46" (1/1) ... [2019-09-03 20:02:46,878 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23f8746d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:02:46, skipping insertion in model container [2019-09-03 20:02:46,878 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 08:02:46" (1/1) ... [2019-09-03 20:02:46,886 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-03 20:02:46,917 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-03 20:02:47,234 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 20:02:47,349 INFO L188 MainTranslator]: Completed pre-run [2019-09-03 20:02:47,430 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 20:02:47,445 INFO L192 MainTranslator]: Completed translation [2019-09-03 20:02:47,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:02:47 WrapperNode [2019-09-03 20:02:47,445 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-03 20:02:47,446 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-03 20:02:47,446 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-03 20:02:47,446 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-03 20:02:47,456 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:02:47" (1/1) ... [2019-09-03 20:02:47,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:02:47" (1/1) ... [2019-09-03 20:02:47,474 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:02:47" (1/1) ... [2019-09-03 20:02:47,475 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:02:47" (1/1) ... [2019-09-03 20:02:47,506 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:02:47" (1/1) ... [2019-09-03 20:02:47,515 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:02:47" (1/1) ... [2019-09-03 20:02:47,521 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:02:47" (1/1) ... [2019-09-03 20:02:47,528 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-03 20:02:47,533 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-03 20:02:47,533 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-03 20:02:47,534 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-03 20:02:47,535 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:02:47" (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 20:02:47,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-03 20:02:47,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-03 20:02:47,584 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-03 20:02:47,584 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-03 20:02:47,584 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2019-09-03 20:02:47,584 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2019-09-03 20:02:47,585 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-03 20:02:47,585 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-03 20:02:47,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-03 20:02:47,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-03 20:02:47,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-03 20:02:47,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-03 20:02:47,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-03 20:02:47,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-03 20:02:47,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-03 20:02:47,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-03 20:02:47,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-03 20:02:48,327 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-03 20:02:48,328 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-03 20:02:48,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 08:02:48 BoogieIcfgContainer [2019-09-03 20:02:48,329 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-03 20:02:48,330 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-03 20:02:48,330 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-03 20:02:48,333 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-03 20:02:48,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.09 08:02:46" (1/3) ... [2019-09-03 20:02:48,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ae778b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 08:02:48, skipping insertion in model container [2019-09-03 20:02:48,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:02:47" (2/3) ... [2019-09-03 20:02:48,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ae778b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 08:02:48, skipping insertion in model container [2019-09-03 20:02:48,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 08:02:48" (3/3) ... [2019-09-03 20:02:48,337 INFO L109 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+cfa-reducer.c [2019-09-03 20:02:48,348 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-03 20:02:48,355 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-03 20:02:48,372 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-03 20:02:48,401 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-03 20:02:48,402 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-03 20:02:48,402 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-03 20:02:48,402 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-03 20:02:48,403 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-03 20:02:48,403 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-03 20:02:48,403 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-03 20:02:48,403 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-03 20:02:48,403 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-03 20:02:48,423 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-09-03 20:02:48,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-03 20:02:48,429 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:02:48,430 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:02:48,433 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:02:48,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:02:48,439 INFO L82 PathProgramCache]: Analyzing trace with hash 316900320, now seen corresponding path program 1 times [2019-09-03 20:02:48,441 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 20:02:48,441 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 20:02:48,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:02:48,490 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:02:48,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:02:48,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:02:48,768 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 20:02:48,770 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 20:02:48,771 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-03 20:02:48,774 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-03 20:02:48,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-03 20:02:48,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-03 20:02:48,791 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 4 states. [2019-09-03 20:02:48,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:02:48,870 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2019-09-03 20:02:48,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-03 20:02:48,873 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-09-03 20:02:48,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:02:48,883 INFO L225 Difference]: With dead ends: 46 [2019-09-03 20:02:48,883 INFO L226 Difference]: Without dead ends: 24 [2019-09-03 20:02:48,886 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 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 20:02:48,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-09-03 20:02:48,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 18. [2019-09-03 20:02:48,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-09-03 20:02:48,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2019-09-03 20:02:48,925 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2019-09-03 20:02:48,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:02:48,926 INFO L475 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2019-09-03 20:02:48,926 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-03 20:02:48,926 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2019-09-03 20:02:48,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-03 20:02:48,927 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:02:48,927 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:02:48,927 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:02:48,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:02:48,928 INFO L82 PathProgramCache]: Analyzing trace with hash 316483246, now seen corresponding path program 1 times [2019-09-03 20:02:48,928 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 20:02:48,928 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 20:02:48,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:02:48,929 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:02:48,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:02:48,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:02:49,056 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 20:02:49,056 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 20:02:49,056 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-03 20:02:49,060 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-03 20:02:49,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-03 20:02:49,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-03 20:02:49,061 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 4 states. [2019-09-03 20:02:49,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:02:49,097 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2019-09-03 20:02:49,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-03 20:02:49,098 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-09-03 20:02:49,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:02:49,100 INFO L225 Difference]: With dead ends: 28 [2019-09-03 20:02:49,100 INFO L226 Difference]: Without dead ends: 26 [2019-09-03 20:02:49,101 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 20:02:49,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-09-03 20:02:49,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 20. [2019-09-03 20:02:49,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-09-03 20:02:49,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2019-09-03 20:02:49,110 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 13 [2019-09-03 20:02:49,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:02:49,111 INFO L475 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2019-09-03 20:02:49,111 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-03 20:02:49,111 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2019-09-03 20:02:49,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-09-03 20:02:49,112 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:02:49,113 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:02:49,113 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:02:49,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:02:49,114 INFO L82 PathProgramCache]: Analyzing trace with hash 625969832, now seen corresponding path program 1 times [2019-09-03 20:02:49,114 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 20:02:49,114 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 20:02:49,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:02:49,117 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:02:49,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:02:49,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:02:49,271 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 20:02:49,272 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-03 20:02:49,272 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) [2019-09-03 20:02:49,289 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-03 20:02:49,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:02:49,414 INFO L256 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 7 conjunts are in the unsatisfiable core [2019-09-03 20:02:49,423 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 20:02:49,468 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 20:02:49,473 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-03 20:02:49,474 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-09-03 20:02:49,474 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-03 20:02:49,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-03 20:02:49,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-09-03 20:02:49,475 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 6 states. [2019-09-03 20:02:49,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:02:49,597 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2019-09-03 20:02:49,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-03 20:02:49,597 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2019-09-03 20:02:49,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:02:49,598 INFO L225 Difference]: With dead ends: 40 [2019-09-03 20:02:49,599 INFO L226 Difference]: Without dead ends: 30 [2019-09-03 20:02:49,599 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-09-03 20:02:49,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-09-03 20:02:49,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 26. [2019-09-03 20:02:49,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-09-03 20:02:49,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2019-09-03 20:02:49,606 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 19 [2019-09-03 20:02:49,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:02:49,606 INFO L475 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2019-09-03 20:02:49,606 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-03 20:02:49,606 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2019-09-03 20:02:49,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-09-03 20:02:49,607 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:02:49,608 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:02:49,608 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:02:49,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:02:49,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1878874992, now seen corresponding path program 2 times [2019-09-03 20:02:49,608 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 20:02:49,609 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 20:02:49,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:02:49,610 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:02:49,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:02:49,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:02:49,745 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 20:02:49,745 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-03 20:02:49,745 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-03 20:02:49,760 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-03 20:02:49,872 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-03 20:02:49,872 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-03 20:02:49,874 INFO L256 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 9 conjunts are in the unsatisfiable core [2019-09-03 20:02:49,878 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 20:02:49,921 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 20:02:49,926 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-03 20:02:49,926 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2019-09-03 20:02:49,927 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-03 20:02:49,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-03 20:02:49,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-03 20:02:49,928 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 7 states. [2019-09-03 20:02:50,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:02:50,099 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2019-09-03 20:02:50,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-03 20:02:50,100 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2019-09-03 20:02:50,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:02:50,101 INFO L225 Difference]: With dead ends: 46 [2019-09-03 20:02:50,101 INFO L226 Difference]: Without dead ends: 36 [2019-09-03 20:02:50,102 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2019-09-03 20:02:50,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-09-03 20:02:50,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2019-09-03 20:02:50,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-09-03 20:02:50,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2019-09-03 20:02:50,108 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 25 [2019-09-03 20:02:50,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:02:50,109 INFO L475 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2019-09-03 20:02:50,109 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-03 20:02:50,109 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2019-09-03 20:02:50,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-09-03 20:02:50,110 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:02:50,110 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:02:50,110 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:02:50,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:02:50,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1460832712, now seen corresponding path program 3 times [2019-09-03 20:02:50,111 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 20:02:50,111 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 20:02:50,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:02:50,112 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-03 20:02:50,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:02:50,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:02:50,253 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 20:02:50,254 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-03 20:02:50,254 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-03 20:02:50,268 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-03 20:02:50,458 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-09-03 20:02:50,458 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-03 20:02:50,461 INFO L256 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 21 conjunts are in the unsatisfiable core [2019-09-03 20:02:50,464 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 20:02:50,535 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:02:50,577 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-09-03 20:02:50,578 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-03 20:02:50,602 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-03 20:02:50,602 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 29 [2019-09-03 20:02:50,603 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-09-03 20:02:50,623 INFO L567 ElimStorePlain]: treesize reduction 5, result has 78.3 percent of original size [2019-09-03 20:02:50,623 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-03 20:02:50,624 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:62, output treesize:18 [2019-09-03 20:02:50,649 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:02:50,704 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-09-03 20:02:50,708 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-03 20:02:50,709 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2019-09-03 20:02:50,709 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-03 20:02:50,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-03 20:02:50,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-09-03 20:02:50,710 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand 13 states. [2019-09-03 20:02:51,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:02:51,508 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2019-09-03 20:02:51,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-09-03 20:02:51,509 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 31 [2019-09-03 20:02:51,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:02:51,509 INFO L225 Difference]: With dead ends: 52 [2019-09-03 20:02:51,510 INFO L226 Difference]: Without dead ends: 0 [2019-09-03 20:02:51,510 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=151, Invalid=449, Unknown=0, NotChecked=0, Total=600 [2019-09-03 20:02:51,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-03 20:02:51,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-03 20:02:51,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-03 20:02:51,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-03 20:02:51,511 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2019-09-03 20:02:51,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:02:51,512 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-03 20:02:51,512 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-03 20:02:51,512 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-03 20:02:51,512 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-03 20:02:51,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-03 20:02:51,732 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 34 [2019-09-03 20:02:51,874 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 45 [2019-09-03 20:02:51,877 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-09-03 20:02:51,877 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-09-03 20:02:51,877 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-09-03 20:02:51,877 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-09-03 20:02:51,878 INFO L439 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (= ~Id_MCDC_93~0 0) [2019-09-03 20:02:51,878 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-09-03 20:02:51,878 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-09-03 20:02:51,878 INFO L443 ceAbstractionStarter]: For program point L159(lines 159 222) no Hoare annotation was computed. [2019-09-03 20:02:51,878 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 131 223) no Hoare annotation was computed. [2019-09-03 20:02:51,878 INFO L443 ceAbstractionStarter]: For program point L180(lines 180 215) no Hoare annotation was computed. [2019-09-03 20:02:51,878 INFO L443 ceAbstractionStarter]: For program point L178(lines 178 220) no Hoare annotation was computed. [2019-09-03 20:02:51,879 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 131 223) no Hoare annotation was computed. [2019-09-03 20:02:51,879 INFO L443 ceAbstractionStarter]: For program point L197(lines 197 207) no Hoare annotation was computed. [2019-09-03 20:02:51,879 INFO L443 ceAbstractionStarter]: For program point L191(line 191) no Hoare annotation was computed. [2019-09-03 20:02:51,879 INFO L439 ceAbstractionStarter]: At program point mainENTRY(lines 131 223) the Hoare annotation is: (or (not (= 0 |old(~Id_MCDC_93~0)|)) (= ~Id_MCDC_93~0 0)) [2019-09-03 20:02:51,880 INFO L443 ceAbstractionStarter]: For program point L189(lines 189 208) no Hoare annotation was computed. [2019-09-03 20:02:51,881 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 191) no Hoare annotation was computed. [2019-09-03 20:02:51,881 INFO L439 ceAbstractionStarter]: At program point L214(lines 180 215) the Hoare annotation is: (let ((.cse0 (= main_~Id_MCDC_89____CPAchecker_TMP_1~0 1)) (.cse1 (= |main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 0)) (.cse2 (= 0 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) (+ |main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 492)))) (.cse3 (= ~Id_MCDC_93~0 main_~Id_MCDC_89__Id_MCDC_96~0))) (or (not (= 0 |old(~Id_MCDC_93~0)|)) (and .cse0 .cse1 .cse2 (<= ~Id_MCDC_93~0 1) (< 0 (+ (div ~Id_MCDC_93~0 4294967296) 1)) .cse3) (and .cse0 .cse1 .cse2 (< (mod ~Id_MCDC_93~0 4294967296) 42) (< (mod (+ main_~Id_MCDC_89__Id_MCDC_96~0 4294967295) 4294967296) 42) .cse3))) [2019-09-03 20:02:51,881 INFO L439 ceAbstractionStarter]: At program point L202(lines 165 221) the Hoare annotation is: (let ((.cse0 (= |main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 0)) (.cse1 (= 0 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) (+ |main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 492))))) (or (not (= 0 |old(~Id_MCDC_93~0)|)) (and .cse0 (= ~Id_MCDC_93~0 0) .cse1 (= 0 main_~Id_MCDC_89__Id_MCDC_96~0)) (let ((.cse2 (mod (+ ~Id_MCDC_93~0 4294967295) 4294967296)) (.cse3 (mod (+ main_~Id_MCDC_89__Id_MCDC_96~0 4294967295) 4294967296))) (and (< .cse2 42) .cse0 (not (= (* 12 .cse3) 492)) (not (= 492 (* 12 .cse2))) .cse1 (< .cse3 42))) (and (<= main_~Id_MCDC_89__Id_MCDC_96~0 1) .cse0 (<= 1 main_~Id_MCDC_89__Id_MCDC_96~0) .cse1 (< 0 (+ (div ~Id_MCDC_93~0 4294967296) 1)) (<= ~Id_MCDC_93~0 3)))) [2019-09-03 20:02:51,891 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-09-03 20:02:51,892 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-09-03 20:02:51,903 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-09-03 20:02:51,903 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-09-03 20:02:51,910 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-09-03 20:02:51,910 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-09-03 20:02:51,911 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-09-03 20:02:51,912 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-09-03 20:02:51,912 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-09-03 20:02:51,912 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-09-03 20:02:51,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.09 08:02:51 BoogieIcfgContainer [2019-09-03 20:02:51,916 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-03 20:02:51,919 INFO L168 Benchmark]: Toolchain (without parser) took 5048.16 ms. Allocated memory was 140.0 MB in the beginning and 263.7 MB in the end (delta: 123.7 MB). Free memory was 87.6 MB in the beginning and 175.1 MB in the end (delta: -87.5 MB). Peak memory consumption was 36.2 MB. Max. memory is 7.1 GB. [2019-09-03 20:02:51,921 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory was 105.9 MB in the beginning and 105.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-03 20:02:51,922 INFO L168 Benchmark]: CACSL2BoogieTranslator took 575.06 ms. Allocated memory was 140.0 MB in the beginning and 199.8 MB in the end (delta: 59.8 MB). Free memory was 87.4 MB in the beginning and 172.0 MB in the end (delta: -84.6 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2019-09-03 20:02:51,923 INFO L168 Benchmark]: Boogie Preprocessor took 82.14 ms. Allocated memory is still 199.8 MB. Free memory was 172.0 MB in the beginning and 168.3 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 7.1 GB. [2019-09-03 20:02:51,924 INFO L168 Benchmark]: RCFGBuilder took 796.08 ms. Allocated memory is still 199.8 MB. Free memory was 168.3 MB in the beginning and 97.0 MB in the end (delta: 71.3 MB). Peak memory consumption was 71.3 MB. Max. memory is 7.1 GB. [2019-09-03 20:02:51,930 INFO L168 Benchmark]: TraceAbstraction took 3585.65 ms. Allocated memory was 199.8 MB in the beginning and 263.7 MB in the end (delta: 64.0 MB). Free memory was 96.4 MB in the beginning and 175.1 MB in the end (delta: -78.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-03 20:02:51,934 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 140.0 MB. Free memory was 105.9 MB in the beginning and 105.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 575.06 ms. Allocated memory was 140.0 MB in the beginning and 199.8 MB in the end (delta: 59.8 MB). Free memory was 87.4 MB in the beginning and 172.0 MB in the end (delta: -84.6 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 82.14 ms. Allocated memory is still 199.8 MB. Free memory was 172.0 MB in the beginning and 168.3 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 796.08 ms. Allocated memory is still 199.8 MB. Free memory was 168.3 MB in the beginning and 97.0 MB in the end (delta: 71.3 MB). Peak memory consumption was 71.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3585.65 ms. Allocated memory was 199.8 MB in the beginning and 263.7 MB in the end (delta: 64.0 MB). Free memory was 96.4 MB in the beginning and 175.1 MB in the end (delta: -78.7 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 191]: 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: 180]: Loop Invariant [2019-09-03 20:02:51,942 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-09-03 20:02:51,942 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-09-03 20:02:51,942 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-09-03 20:02:51,943 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (!(0 == \old(Id_MCDC_93)) || (((((Id_MCDC_89____CPAchecker_TMP_1 == 1 && Id_MCDC_89__Id_MCDC_95 == 0) && 0 == unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492]) && Id_MCDC_93 <= 1) && 0 < Id_MCDC_93 / 4294967296 + 1) && Id_MCDC_93 == Id_MCDC_89__Id_MCDC_96)) || (((((Id_MCDC_89____CPAchecker_TMP_1 == 1 && Id_MCDC_89__Id_MCDC_95 == 0) && 0 == unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492]) && Id_MCDC_93 % 4294967296 < 42) && (Id_MCDC_89__Id_MCDC_96 + 4294967295) % 4294967296 < 42) && Id_MCDC_93 == Id_MCDC_89__Id_MCDC_96) - InvariantResult [Line: 165]: Loop Invariant [2019-09-03 20:02:51,944 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-09-03 20:02:51,944 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-09-03 20:02:51,944 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-09-03 20:02:51,945 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-09-03 20:02:51,945 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-09-03 20:02:51,946 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((!(0 == \old(Id_MCDC_93)) || (((Id_MCDC_89__Id_MCDC_95 == 0 && Id_MCDC_93 == 0) && 0 == unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492]) && 0 == Id_MCDC_89__Id_MCDC_96)) || ((((((Id_MCDC_93 + 4294967295) % 4294967296 < 42 && Id_MCDC_89__Id_MCDC_95 == 0) && !(12 * ((Id_MCDC_89__Id_MCDC_96 + 4294967295) % 4294967296) == 492)) && !(492 == 12 * ((Id_MCDC_93 + 4294967295) % 4294967296))) && 0 == unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492]) && (Id_MCDC_89__Id_MCDC_96 + 4294967295) % 4294967296 < 42)) || (((((Id_MCDC_89__Id_MCDC_96 <= 1 && Id_MCDC_89__Id_MCDC_95 == 0) && 1 <= Id_MCDC_89__Id_MCDC_96) && 0 == unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492]) && 0 < Id_MCDC_93 / 4294967296 + 1) && Id_MCDC_93 <= 3) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 19 locations, 1 error locations. SAFE Result, 3.4s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 1.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.3s HoareAnnotationTime, HoareTripleCheckerStatistics: 74 SDtfs, 153 SDslu, 173 SDs, 0 SdLazy, 252 SolverSat, 51 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 123 GetRequests, 72 SyntacticMatches, 6 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=4, 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, 5 MinimizatonAttempts, 20 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 18 NumberOfFragments, 178 HoareAnnotationTreeSize, 6 FomulaSimplifications, 360 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 379 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 176 NumberOfCodeBlocks, 170 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 168 ConstructedInterpolants, 0 QuantifiedInterpolants, 20712 SizeOfPredicates, 14 NumberOfNonLiveVariables, 1316 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 40/108 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...