java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/array-tiling/pnr5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 16:30:31,823 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 16:30:31,825 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 16:30:31,836 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 16:30:31,837 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 16:30:31,838 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 16:30:31,839 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 16:30:31,841 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 16:30:31,843 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 16:30:31,844 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 16:30:31,845 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 16:30:31,846 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 16:30:31,846 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 16:30:31,847 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 16:30:31,848 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 16:30:31,849 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 16:30:31,850 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 16:30:31,851 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 16:30:31,852 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 16:30:31,854 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 16:30:31,856 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 16:30:31,857 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 16:30:31,858 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 16:30:31,859 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 16:30:31,861 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-02 16:30:31,864 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 16:30:31,865 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 16:30:31,866 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 16:30:31,867 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 16:30:31,868 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 16:30:31,868 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 16:30:31,869 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 16:30:31,869 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 16:30:31,869 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 16:30:31,870 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 16:30:31,871 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 16:30:31,872 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-10-02 16:30:31,887 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 16:30:31,887 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 16:30:31,887 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 16:30:31,888 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 16:30:31,888 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 16:30:31,889 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 16:30:31,889 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 16:30:31,889 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 16:30:31,889 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 16:30:31,889 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 16:30:31,890 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 16:30:31,890 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 16:30:31,891 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 16:30:31,891 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 16:30:31,891 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 16:30:31,891 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 16:30:31,892 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 16:30:31,892 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 16:30:31,892 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 16:30:31,892 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 16:30:31,892 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 16:30:31,893 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 16:30:31,893 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 16:30:31,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 16:30:31,893 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 16:30:31,893 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 16:30:31,894 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 16:30:31,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 16:30:31,894 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 16:30:31,894 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 16:30:31,924 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 16:30:31,938 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 16:30:31,942 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 16:30:31,943 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 16:30:31,944 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 16:30:31,944 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/pnr5.c [2019-10-02 16:30:32,013 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/373426dad/f9f22615d7984c69bab8263743cc5547/FLAGf00e74dfe [2019-10-02 16:30:32,484 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 16:30:32,484 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/pnr5.c [2019-10-02 16:30:32,492 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/373426dad/f9f22615d7984c69bab8263743cc5547/FLAGf00e74dfe [2019-10-02 16:30:32,854 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/373426dad/f9f22615d7984c69bab8263743cc5547 [2019-10-02 16:30:32,874 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 16:30:32,876 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 16:30:32,877 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 16:30:32,877 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 16:30:32,881 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 16:30:32,882 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:30:32" (1/1) ... [2019-10-02 16:30:32,886 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2347579a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:32, skipping insertion in model container [2019-10-02 16:30:32,886 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:30:32" (1/1) ... [2019-10-02 16:30:32,894 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 16:30:32,920 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 16:30:33,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:30:33,243 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 16:30:33,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:30:33,407 INFO L192 MainTranslator]: Completed translation [2019-10-02 16:30:33,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:33 WrapperNode [2019-10-02 16:30:33,408 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 16:30:33,409 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 16:30:33,409 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 16:30:33,409 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 16:30:33,423 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:33" (1/1) ... [2019-10-02 16:30:33,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:33" (1/1) ... [2019-10-02 16:30:33,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:33" (1/1) ... [2019-10-02 16:30:33,434 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:33" (1/1) ... [2019-10-02 16:30:33,444 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:33" (1/1) ... [2019-10-02 16:30:33,449 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:33" (1/1) ... [2019-10-02 16:30:33,451 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:33" (1/1) ... [2019-10-02 16:30:33,454 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 16:30:33,454 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 16:30:33,455 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 16:30:33,455 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 16:30:33,456 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:33" (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 [2019-10-02 16:30:33,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 16:30:33,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 16:30:33,521 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-02 16:30:33,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ReadFromPort [2019-10-02 16:30:33,522 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 16:30:33,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 16:30:33,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-02 16:30:33,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-02 16:30:33,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 16:30:33,522 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-02 16:30:33,523 INFO L130 BoogieDeclarations]: Found specification of procedure ReadFromPort [2019-10-02 16:30:33,523 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 16:30:33,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-02 16:30:33,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-02 16:30:33,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-02 16:30:33,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 16:30:33,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 16:30:33,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-02 16:30:33,913 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 16:30:33,913 INFO L283 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-02 16:30:33,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:30:33 BoogieIcfgContainer [2019-10-02 16:30:33,915 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 16:30:33,916 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 16:30:33,917 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 16:30:33,920 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 16:30:33,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 04:30:32" (1/3) ... [2019-10-02 16:30:33,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a4520ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:30:33, skipping insertion in model container [2019-10-02 16:30:33,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:33" (2/3) ... [2019-10-02 16:30:33,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a4520ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:30:33, skipping insertion in model container [2019-10-02 16:30:33,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:30:33" (3/3) ... [2019-10-02 16:30:33,924 INFO L109 eAbstractionObserver]: Analyzing ICFG pnr5.c [2019-10-02 16:30:33,934 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 16:30:33,943 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 16:30:33,960 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 16:30:33,988 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 16:30:33,988 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 16:30:33,989 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 16:30:33,989 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 16:30:33,989 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 16:30:33,989 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 16:30:33,989 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 16:30:33,990 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 16:30:34,004 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2019-10-02 16:30:34,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-02 16:30:34,013 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:34,013 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:30:34,015 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:34,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:34,021 INFO L82 PathProgramCache]: Analyzing trace with hash -973608197, now seen corresponding path program 1 times [2019-10-02 16:30:34,023 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:34,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:34,074 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:34,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:34,075 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:34,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:34,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:30:34,182 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:30:34,182 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-02 16:30:34,183 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:34,188 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 16:30:34,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 16:30:34,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:30:34,207 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2019-10-02 16:30:34,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:34,227 INFO L93 Difference]: Finished difference Result 44 states and 56 transitions. [2019-10-02 16:30:34,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 16:30:34,228 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2019-10-02 16:30:34,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:34,237 INFO L225 Difference]: With dead ends: 44 [2019-10-02 16:30:34,237 INFO L226 Difference]: Without dead ends: 39 [2019-10-02 16:30:34,239 INFO L640 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 [2019-10-02 16:30:34,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-10-02 16:30:34,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2019-10-02 16:30:34,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-10-02 16:30:34,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2019-10-02 16:30:34,283 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 15 [2019-10-02 16:30:34,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:34,284 INFO L475 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2019-10-02 16:30:34,284 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 16:30:34,284 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2019-10-02 16:30:34,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-02 16:30:34,286 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:34,286 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:30:34,287 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:34,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:34,287 INFO L82 PathProgramCache]: Analyzing trace with hash 2038399118, now seen corresponding path program 1 times [2019-10-02 16:30:34,288 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:34,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:34,290 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:34,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:34,290 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:34,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:34,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:30:34,547 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:30:34,547 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 16:30:34,548 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:34,549 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 16:30:34,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 16:30:34,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 16:30:34,550 INFO L87 Difference]: Start difference. First operand 39 states and 49 transitions. Second operand 4 states. [2019-10-02 16:30:34,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:34,760 INFO L93 Difference]: Finished difference Result 56 states and 76 transitions. [2019-10-02 16:30:34,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 16:30:34,762 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-10-02 16:30:34,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:34,765 INFO L225 Difference]: With dead ends: 56 [2019-10-02 16:30:34,765 INFO L226 Difference]: Without dead ends: 56 [2019-10-02 16:30:34,767 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 16:30:34,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-10-02 16:30:34,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 40. [2019-10-02 16:30:34,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-10-02 16:30:34,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2019-10-02 16:30:34,789 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 50 transitions. Word has length 15 [2019-10-02 16:30:34,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:34,790 INFO L475 AbstractCegarLoop]: Abstraction has 40 states and 50 transitions. [2019-10-02 16:30:34,790 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 16:30:34,791 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 50 transitions. [2019-10-02 16:30:34,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-02 16:30:34,794 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:34,795 INFO L411 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:30:34,795 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:34,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:34,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1405014836, now seen corresponding path program 1 times [2019-10-02 16:30:34,797 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:34,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:34,803 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:34,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:34,803 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:34,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:35,349 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-02 16:30:35,350 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 16:30:35,350 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 16:30:35,351 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 48 with the following transitions: [2019-10-02 16:30:35,354 INFO L207 CegarAbsIntRunner]: [0], [3], [7], [13], [15], [17], [20], [25], [28], [33], [36], [41], [44], [49], [52], [56], [60], [68], [81], [82], [83], [84], [88], [91], [93], [99], [100], [101], [102], [103], [104], [105], [106], [107], [108], [109], [111], [112], [113] [2019-10-02 16:30:35,394 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 16:30:35,395 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-02 16:30:35,472 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-02 16:30:35,474 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 32 variables. [2019-10-02 16:30:35,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:35,478 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-02 16:30:35,540 INFO L227 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 77.5% of their original sizes. [2019-10-02 16:30:35,541 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-02 16:30:35,562 INFO L420 sIntCurrentIteration]: We unified 46 AI predicates to 46 [2019-10-02 16:30:35,562 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-02 16:30:35,563 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 16:30:35,563 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-10-02 16:30:35,563 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:35,564 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 16:30:35,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 16:30:35,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 16:30:35,565 INFO L87 Difference]: Start difference. First operand 40 states and 50 transitions. Second operand 4 states. [2019-10-02 16:30:35,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:35,567 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2019-10-02 16:30:35,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:30:35,568 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2019-10-02 16:30:35,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:35,568 INFO L225 Difference]: With dead ends: 7 [2019-10-02 16:30:35,568 INFO L226 Difference]: Without dead ends: 0 [2019-10-02 16:30:35,569 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 16:30:35,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-02 16:30:35,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-02 16:30:35,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-02 16:30:35,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-02 16:30:35,570 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 47 [2019-10-02 16:30:35,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:35,570 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-02 16:30:35,570 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 16:30:35,570 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-02 16:30:35,570 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-02 16:30:35,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 04:30:35 BoogieIcfgContainer [2019-10-02 16:30:35,576 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 16:30:35,578 INFO L168 Benchmark]: Toolchain (without parser) took 2701.54 ms. Allocated memory was 132.6 MB in the beginning and 224.4 MB in the end (delta: 91.8 MB). Free memory was 89.0 MB in the beginning and 175.8 MB in the end (delta: -86.8 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:35,579 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 132.6 MB. Free memory was 106.9 MB in the beginning and 106.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-02 16:30:35,581 INFO L168 Benchmark]: CACSL2BoogieTranslator took 531.04 ms. Allocated memory was 132.6 MB in the beginning and 200.8 MB in the end (delta: 68.2 MB). Free memory was 88.8 MB in the beginning and 176.6 MB in the end (delta: -87.8 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:35,581 INFO L168 Benchmark]: Boogie Preprocessor took 45.43 ms. Allocated memory is still 200.8 MB. Free memory was 176.6 MB in the beginning and 174.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:35,582 INFO L168 Benchmark]: RCFGBuilder took 460.62 ms. Allocated memory is still 200.8 MB. Free memory was 174.7 MB in the beginning and 155.0 MB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:35,583 INFO L168 Benchmark]: TraceAbstraction took 1659.33 ms. Allocated memory was 200.8 MB in the beginning and 224.4 MB in the end (delta: 23.6 MB). Free memory was 155.0 MB in the beginning and 175.8 MB in the end (delta: -20.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:35,588 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 132.6 MB. Free memory was 106.9 MB in the beginning and 106.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 531.04 ms. Allocated memory was 132.6 MB in the beginning and 200.8 MB in the end (delta: 68.2 MB). Free memory was 88.8 MB in the beginning and 176.6 MB in the end (delta: -87.8 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 45.43 ms. Allocated memory is still 200.8 MB. Free memory was 176.6 MB in the beginning and 174.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 460.62 ms. Allocated memory is still 200.8 MB. Free memory was 174.7 MB in the beginning and 155.0 MB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1659.33 ms. Allocated memory was 200.8 MB in the beginning and 224.4 MB in the end (delta: 23.6 MB). Free memory was 155.0 MB in the beginning and 175.8 MB in the end (delta: -20.8 MB). Peak memory consumption was 2.8 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 44 locations, 1 error locations. SAFE Result, 1.5s OverallTime, 3 OverallIterations, 5 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 96 SDtfs, 83 SDslu, 18 SDs, 0 SdLazy, 51 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9755434782608695 AbsIntWeakeningRatio, 0.8478260869565217 AbsIntAvgWeakeningVarsNumRemoved, 0.4782608695652174 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 16 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 77 NumberOfCodeBlocks, 77 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 74 ConstructedInterpolants, 0 QuantifiedInterpolants, 17656 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 30/31 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...