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 --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/array-tiling/rewnifrev2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:53:59,824 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:53:59,827 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:53:59,842 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:53:59,843 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:53:59,845 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:53:59,847 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:53:59,856 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:53:59,858 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:53:59,859 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:53:59,860 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:53:59,861 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:53:59,861 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:53:59,862 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:53:59,863 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:53:59,864 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:53:59,865 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:53:59,866 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:53:59,867 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:53:59,869 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:53:59,870 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:53:59,871 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:53:59,872 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:53:59,873 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:53:59,875 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:53:59,875 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:53:59,876 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:53:59,877 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:53:59,877 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:53:59,878 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:53:59,878 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:53:59,879 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:53:59,880 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:53:59,881 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:53:59,882 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:53:59,882 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:53:59,885 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:53:59,885 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:53:59,885 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:53:59,886 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:53:59,889 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:53:59,889 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 19:53:59,921 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:53:59,922 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:53:59,923 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:53:59,923 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:53:59,923 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:53:59,924 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:53:59,924 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:53:59,924 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:53:59,924 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:53:59,925 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:53:59,925 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:53:59,925 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:53:59,925 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:53:59,925 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:53:59,925 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:53:59,926 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:53:59,926 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:53:59,926 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:53:59,926 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:53:59,927 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:53:59,927 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:53:59,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:53:59,927 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:53:59,927 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:53:59,928 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:53:59,928 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:53:59,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:53:59,928 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:53:59,928 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 19:54:00,200 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:54:00,217 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:54:00,221 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:54:00,222 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:54:00,223 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:54:00,224 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/rewnifrev2.c [2019-10-13 19:54:00,306 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26d28d113/25a61d49f4804cbc8db77e0a0c8fc0e0/FLAGd00e617af [2019-10-13 19:54:00,761 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:54:00,761 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/rewnifrev2.c [2019-10-13 19:54:00,766 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26d28d113/25a61d49f4804cbc8db77e0a0c8fc0e0/FLAGd00e617af [2019-10-13 19:54:01,123 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26d28d113/25a61d49f4804cbc8db77e0a0c8fc0e0 [2019-10-13 19:54:01,133 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:54:01,135 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:54:01,136 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:54:01,136 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:54:01,140 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:54:01,141 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:54:01" (1/1) ... [2019-10-13 19:54:01,143 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fb0478c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:01, skipping insertion in model container [2019-10-13 19:54:01,144 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:54:01" (1/1) ... [2019-10-13 19:54:01,151 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:54:01,168 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:54:01,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:54:01,393 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:54:01,408 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:54:01,424 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:54:01,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:01 WrapperNode [2019-10-13 19:54:01,424 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:54:01,425 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:54:01,425 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:54:01,426 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:54:01,515 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:01" (1/1) ... [2019-10-13 19:54:01,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:01" (1/1) ... [2019-10-13 19:54:01,524 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:01" (1/1) ... [2019-10-13 19:54:01,525 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:01" (1/1) ... [2019-10-13 19:54:01,538 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:01" (1/1) ... [2019-10-13 19:54:01,544 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:01" (1/1) ... [2019-10-13 19:54:01,546 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:01" (1/1) ... [2019-10-13 19:54:01,547 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:54:01,548 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:54:01,548 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:54:01,548 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:54:01,549 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:54:01,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:54:01,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:54:01,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 19:54:01,605 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:54:01,605 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:54:01,606 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 19:54:01,606 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 19:54:01,606 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:54:01,606 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:54:01,606 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:54:01,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:54:01,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:54:01,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:54:01,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:54:01,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:54:01,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:54:01,861 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:54:01,862 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-13 19:54:01,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:54:01 BoogieIcfgContainer [2019-10-13 19:54:01,864 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:54:01,868 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:54:01,868 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:54:01,878 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:54:01,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:54:01" (1/3) ... [2019-10-13 19:54:01,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a00b1f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:54:01, skipping insertion in model container [2019-10-13 19:54:01,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:01" (2/3) ... [2019-10-13 19:54:01,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a00b1f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:54:01, skipping insertion in model container [2019-10-13 19:54:01,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:54:01" (3/3) ... [2019-10-13 19:54:01,882 INFO L109 eAbstractionObserver]: Analyzing ICFG rewnifrev2.c [2019-10-13 19:54:01,893 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:54:01,904 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:54:01,915 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:54:01,943 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:54:01,944 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:54:01,944 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:54:01,944 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:54:01,944 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:54:01,944 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:54:01,944 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:54:01,944 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:54:01,959 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2019-10-13 19:54:01,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-13 19:54:01,964 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:54:01,965 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:54:01,967 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:54:01,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:54:01,972 INFO L82 PathProgramCache]: Analyzing trace with hash -516860939, now seen corresponding path program 1 times [2019-10-13 19:54:01,981 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:54:01,981 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887062651] [2019-10-13 19:54:01,982 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:54:01,982 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:54:01,982 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:54:02,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:54:02,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:54:02,117 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887062651] [2019-10-13 19:54:02,118 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:54:02,118 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 19:54:02,119 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113442742] [2019-10-13 19:54:02,122 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 19:54:02,124 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:54:02,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 19:54:02,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 19:54:02,138 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2019-10-13 19:54:02,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:54:02,158 INFO L93 Difference]: Finished difference Result 41 states and 49 transitions. [2019-10-13 19:54:02,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 19:54:02,159 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2019-10-13 19:54:02,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:54:02,165 INFO L225 Difference]: With dead ends: 41 [2019-10-13 19:54:02,166 INFO L226 Difference]: Without dead ends: 20 [2019-10-13 19:54:02,169 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 19:54:02,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-10-13 19:54:02,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-10-13 19:54:02,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-10-13 19:54:02,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2019-10-13 19:54:02,201 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 14 [2019-10-13 19:54:02,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:54:02,201 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2019-10-13 19:54:02,202 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 19:54:02,202 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2019-10-13 19:54:02,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-13 19:54:02,203 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:54:02,203 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:54:02,203 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:54:02,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:54:02,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1546915729, now seen corresponding path program 1 times [2019-10-13 19:54:02,204 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:54:02,205 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302372858] [2019-10-13 19:54:02,205 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:54:02,205 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:54:02,205 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:54:02,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:54:02,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:54:02,277 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302372858] [2019-10-13 19:54:02,278 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:54:02,278 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 19:54:02,278 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889948004] [2019-10-13 19:54:02,280 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:54:02,280 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:54:02,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:54:02,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:54:02,281 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 3 states. [2019-10-13 19:54:02,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:54:02,333 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2019-10-13 19:54:02,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:54:02,334 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2019-10-13 19:54:02,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:54:02,335 INFO L225 Difference]: With dead ends: 32 [2019-10-13 19:54:02,335 INFO L226 Difference]: Without dead ends: 21 [2019-10-13 19:54:02,336 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:54:02,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-10-13 19:54:02,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-10-13 19:54:02,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-10-13 19:54:02,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2019-10-13 19:54:02,343 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 14 [2019-10-13 19:54:02,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:54:02,343 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2019-10-13 19:54:02,343 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:54:02,343 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2019-10-13 19:54:02,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-13 19:54:02,344 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:54:02,345 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:54:02,345 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:54:02,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:54:02,345 INFO L82 PathProgramCache]: Analyzing trace with hash -586037587, now seen corresponding path program 1 times [2019-10-13 19:54:02,346 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:54:02,346 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003397573] [2019-10-13 19:54:02,346 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:54:02,347 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:54:02,347 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:54:02,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:54:02,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:54:02,786 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003397573] [2019-10-13 19:54:02,786 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:54:02,786 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 19:54:02,786 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292016866] [2019-10-13 19:54:02,787 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 19:54:02,789 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:54:02,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 19:54:02,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:54:02,792 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 10 states. [2019-10-13 19:54:02,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:54:02,971 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2019-10-13 19:54:02,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 19:54:02,972 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2019-10-13 19:54:02,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:54:02,974 INFO L225 Difference]: With dead ends: 31 [2019-10-13 19:54:02,974 INFO L226 Difference]: Without dead ends: 29 [2019-10-13 19:54:02,975 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:54:02,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-10-13 19:54:02,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2019-10-13 19:54:02,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-10-13 19:54:02,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2019-10-13 19:54:02,984 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 16 [2019-10-13 19:54:02,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:54:02,984 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2019-10-13 19:54:02,984 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 19:54:02,985 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2019-10-13 19:54:02,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-13 19:54:02,986 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:54:02,986 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:54:02,986 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:54:02,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:54:02,987 INFO L82 PathProgramCache]: Analyzing trace with hash -798788415, now seen corresponding path program 1 times [2019-10-13 19:54:02,987 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:54:02,987 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214815253] [2019-10-13 19:54:02,988 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:54:02,988 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:54:02,988 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:54:03,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:54:03,280 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:54:03,280 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214815253] [2019-10-13 19:54:03,280 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413241020] [2019-10-13 19:54:03,281 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:54:03,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:54:03,355 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 20 conjunts are in the unsatisfiable core [2019-10-13 19:54:03,366 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:54:03,437 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 19:54:03,461 INFO L341 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2019-10-13 19:54:03,462 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2019-10-13 19:54:03,462 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 19:54:03,475 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 19:54:03,475 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-13 19:54:03,476 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:29 [2019-10-13 19:54:03,868 INFO L341 Elim1Store]: treesize reduction 17, result has 66.7 percent of original size [2019-10-13 19:54:03,868 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 45 [2019-10-13 19:54:03,870 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 19:54:03,871 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 19:54:03,874 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-10-13 19:54:03,904 INFO L567 ElimStorePlain]: treesize reduction 50, result has 23.1 percent of original size [2019-10-13 19:54:03,905 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-13 19:54:03,905 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:46, output treesize:7 [2019-10-13 19:54:03,930 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 19:54:03,971 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:54:03,972 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 19:54:04,062 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 19:54:04,150 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:54:04,150 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [373964512] [2019-10-13 19:54:04,157 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 25 [2019-10-13 19:54:04,194 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-13 19:54:04,194 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-13 19:54:04,261 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-13 19:54:04,263 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Performed 24 root evaluator evaluations with a maximum evaluation depth of 3. Performed 24 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Never found a fixpoint. Largest state had 25 variables. [2019-10-13 19:54:04,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:54:04,268 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-13 19:54:04,308 INFO L227 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 77.5% of their original sizes. [2019-10-13 19:54:04,308 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-13 19:54:04,319 INFO L553 sIntCurrentIteration]: We unified 23 AI predicates to 23 [2019-10-13 19:54:04,320 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-13 19:54:04,320 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-13 19:54:04,321 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10, 13, 10] total 29 [2019-10-13 19:54:04,321 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646009554] [2019-10-13 19:54:04,322 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:54:04,322 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-13 19:54:04,323 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-13 19:54:04,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:54:04,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:54:04,324 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 4 states. [2019-10-13 19:54:04,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:54:04,327 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2019-10-13 19:54:04,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:54:04,328 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2019-10-13 19:54:04,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:54:04,328 INFO L225 Difference]: With dead ends: 27 [2019-10-13 19:54:04,329 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 19:54:04,329 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:54:04,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 19:54:04,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 19:54:04,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 19:54:04,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 19:54:04,330 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2019-10-13 19:54:04,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:54:04,331 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 19:54:04,331 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:54:04,331 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 19:54:04,331 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 19:54:04,535 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:54:04,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 19:54:04,655 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-13 19:54:04,656 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-13 19:54:04,656 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:54:04,656 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:54:04,656 INFO L439 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (and (<= 0 (+ ~SIZE~0 2147483648)) (<= ~SIZE~0 2147483647) (= ~MAX~0 100000)) [2019-10-13 19:54:04,656 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-13 19:54:04,656 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-13 19:54:04,657 INFO L439 ceAbstractionStarter]: At program point L27(line 27) the Hoare annotation is: (or (not (<= |old(~SIZE~0)| 2147483647)) (not (= 100000 ~MAX~0)) (not (<= 0 (+ |old(~SIZE~0)| 2147483648)))) [2019-10-13 19:54:04,657 INFO L443 ceAbstractionStarter]: For program point L27-1(line 27) no Hoare annotation was computed. [2019-10-13 19:54:04,657 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 11 31) no Hoare annotation was computed. [2019-10-13 19:54:04,657 INFO L443 ceAbstractionStarter]: For program point L25-2(lines 25 28) no Hoare annotation was computed. [2019-10-13 19:54:04,657 INFO L439 ceAbstractionStarter]: At program point L25-3(lines 25 28) the Hoare annotation is: (or (not (<= |old(~SIZE~0)| 2147483647)) (not (= 100000 ~MAX~0)) (not (<= 0 (+ |old(~SIZE~0)| 2147483648)))) [2019-10-13 19:54:04,657 INFO L443 ceAbstractionStarter]: For program point L19-2(lines 19 23) no Hoare annotation was computed. [2019-10-13 19:54:04,658 INFO L439 ceAbstractionStarter]: At program point L19-3(lines 19 23) the Hoare annotation is: (or (not (<= |old(~SIZE~0)| 2147483647)) (not (= 100000 ~MAX~0)) (not (<= 0 (+ |old(~SIZE~0)| 2147483648)))) [2019-10-13 19:54:04,658 INFO L443 ceAbstractionStarter]: For program point L15(lines 15 29) no Hoare annotation was computed. [2019-10-13 19:54:04,658 INFO L443 ceAbstractionStarter]: For program point L19-4(lines 19 23) no Hoare annotation was computed. [2019-10-13 19:54:04,658 INFO L443 ceAbstractionStarter]: For program point L15-1(lines 15 29) no Hoare annotation was computed. [2019-10-13 19:54:04,658 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 11 31) no Hoare annotation was computed. [2019-10-13 19:54:04,658 INFO L439 ceAbstractionStarter]: At program point mainENTRY(lines 11 31) the Hoare annotation is: (or (not (<= |old(~SIZE~0)| 2147483647)) (not (= 100000 ~MAX~0)) (not (<= 0 (+ |old(~SIZE~0)| 2147483648))) (and (<= 0 (+ ~SIZE~0 2147483648)) (<= ~SIZE~0 2147483647))) [2019-10-13 19:54:04,659 INFO L443 ceAbstractionStarter]: For program point L3-3(line 3) no Hoare annotation was computed. [2019-10-13 19:54:04,659 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 3) the Hoare annotation is: true [2019-10-13 19:54:04,659 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2019-10-13 19:54:04,659 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 3) no Hoare annotation was computed. [2019-10-13 19:54:04,659 INFO L443 ceAbstractionStarter]: For program point L3(line 3) no Hoare annotation was computed. [2019-10-13 19:54:04,659 INFO L443 ceAbstractionStarter]: For program point L3-1(line 3) no Hoare annotation was computed. [2019-10-13 19:54:04,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:54:04 BoogieIcfgContainer [2019-10-13 19:54:04,672 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 19:54:04,678 INFO L168 Benchmark]: Toolchain (without parser) took 3540.53 ms. Allocated memory was 143.7 MB in the beginning and 248.5 MB in the end (delta: 104.9 MB). Free memory was 101.4 MB in the beginning and 216.9 MB in the end (delta: -115.4 MB). Peak memory consumption was 111.4 MB. Max. memory is 7.1 GB. [2019-10-13 19:54:04,679 INFO L168 Benchmark]: CDTParser took 1.20 ms. Allocated memory is still 143.7 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-13 19:54:04,681 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.03 ms. Allocated memory is still 143.7 MB. Free memory was 101.0 MB in the beginning and 91.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2019-10-13 19:54:04,687 INFO L168 Benchmark]: Boogie Preprocessor took 122.29 ms. Allocated memory was 143.7 MB in the beginning and 200.3 MB in the end (delta: 56.6 MB). Free memory was 91.2 MB in the beginning and 178.4 MB in the end (delta: -87.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2019-10-13 19:54:04,688 INFO L168 Benchmark]: RCFGBuilder took 316.07 ms. Allocated memory is still 200.3 MB. Free memory was 178.4 MB in the beginning and 164.2 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2019-10-13 19:54:04,689 INFO L168 Benchmark]: TraceAbstraction took 2803.86 ms. Allocated memory was 200.3 MB in the beginning and 248.5 MB in the end (delta: 48.2 MB). Free memory was 163.5 MB in the beginning and 216.9 MB in the end (delta: -53.3 MB). Peak memory consumption was 116.9 MB. Max. memory is 7.1 GB. [2019-10-13 19:54:04,694 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.20 ms. Allocated memory is still 143.7 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 289.03 ms. Allocated memory is still 143.7 MB. Free memory was 101.0 MB in the beginning and 91.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.29 ms. Allocated memory was 143.7 MB in the beginning and 200.3 MB in the end (delta: 56.6 MB). Free memory was 91.2 MB in the beginning and 178.4 MB in the end (delta: -87.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 316.07 ms. Allocated memory is still 200.3 MB. Free memory was 178.4 MB in the beginning and 164.2 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2803.86 ms. Allocated memory was 200.3 MB in the beginning and 248.5 MB in the end (delta: 48.2 MB). Free memory was 163.5 MB in the beginning and 216.9 MB in the end (delta: -53.3 MB). Peak memory consumption was 116.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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: 25]: Loop Invariant Derived loop invariant: (!(\old(SIZE) <= 2147483647) || !(100000 == MAX)) || !(0 <= \old(SIZE) + 2147483648) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (!(\old(SIZE) <= 2147483647) || !(100000 == MAX)) || !(0 <= \old(SIZE) + 2147483648) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 1 error locations. Result: SAFE, OverallTime: 2.7s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 64 SDtfs, 24 SDslu, 67 SDs, 0 SdLazy, 58 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 11 PreInvPairs, 11 NumberOfFragments, 84 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 3 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 92 NumberOfCodeBlocks, 92 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 110 ConstructedInterpolants, 11 QuantifiedInterpolants, 18111 SizeOfPredicates, 13 NumberOfNonLiveVariables, 97 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 8/16 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 111, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.9619565217391305, AVG_VARS_REMOVED_DURING_WEAKENING: 0.9130434782608695, AVG_WEAKENED_CONJUNCTS: 0.9565217391304348, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...