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/pr5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 16:30:34,068 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 16:30:34,070 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 16:30:34,081 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 16:30:34,082 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 16:30:34,083 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 16:30:34,084 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 16:30:34,086 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 16:30:34,087 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 16:30:34,088 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 16:30:34,089 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 16:30:34,090 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 16:30:34,090 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 16:30:34,091 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 16:30:34,092 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 16:30:34,093 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 16:30:34,094 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 16:30:34,095 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 16:30:34,096 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 16:30:34,098 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 16:30:34,100 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 16:30:34,100 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 16:30:34,102 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 16:30:34,102 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 16:30:34,104 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-02 16:30:34,105 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-02 16:30:34,105 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-02 16:30:34,106 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-02 16:30:34,106 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-02 16:30:34,107 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-02 16:30:34,107 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 16:30:34,108 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 16:30:34,109 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 16:30:34,109 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 16:30:34,110 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 16:30:34,111 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 16:30:34,111 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 16:30:34,112 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 16:30:34,112 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 16:30:34,113 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 16:30:34,113 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 16:30:34,114 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 16:30:34,128 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 16:30:34,129 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 16:30:34,129 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 16:30:34,129 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 16:30:34,130 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 16:30:34,130 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 16:30:34,130 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 16:30:34,130 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 16:30:34,131 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 16:30:34,131 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 16:30:34,131 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 16:30:34,132 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 16:30:34,132 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 16:30:34,132 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 16:30:34,132 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 16:30:34,132 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 16:30:34,132 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 16:30:34,133 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 16:30:34,133 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 16:30:34,133 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 16:30:34,133 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 16:30:34,133 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 16:30:34,134 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 16:30:34,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 16:30:34,134 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 16:30:34,134 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 16:30:34,134 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 16:30:34,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 16:30:34,135 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 16:30:34,135 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 16:30:34,178 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 16:30:34,194 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 16:30:34,198 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 16:30:34,199 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 16:30:34,199 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 16:30:34,200 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/pr5.c [2019-10-02 16:30:34,271 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a0d66c3d/edcf5e494e3140d58dcadeeb734093d4/FLAGb820b0a4b [2019-10-02 16:30:34,705 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 16:30:34,705 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/pr5.c [2019-10-02 16:30:34,713 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a0d66c3d/edcf5e494e3140d58dcadeeb734093d4/FLAGb820b0a4b [2019-10-02 16:30:35,083 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a0d66c3d/edcf5e494e3140d58dcadeeb734093d4 [2019-10-02 16:30:35,093 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 16:30:35,095 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 16:30:35,096 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 16:30:35,097 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 16:30:35,105 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 16:30:35,106 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:30:35" (1/1) ... [2019-10-02 16:30:35,109 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65081f9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:35, skipping insertion in model container [2019-10-02 16:30:35,109 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:30:35" (1/1) ... [2019-10-02 16:30:35,117 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 16:30:35,135 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 16:30:35,337 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:30:35,341 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 16:30:35,371 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:30:35,485 INFO L192 MainTranslator]: Completed translation [2019-10-02 16:30:35,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:35 WrapperNode [2019-10-02 16:30:35,486 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 16:30:35,487 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 16:30:35,487 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 16:30:35,487 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 16:30:35,500 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:35" (1/1) ... [2019-10-02 16:30:35,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:35" (1/1) ... [2019-10-02 16:30:35,509 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:35" (1/1) ... [2019-10-02 16:30:35,510 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:35" (1/1) ... [2019-10-02 16:30:35,519 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:35" (1/1) ... [2019-10-02 16:30:35,524 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:35" (1/1) ... [2019-10-02 16:30:35,526 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:35" (1/1) ... [2019-10-02 16:30:35,533 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 16:30:35,534 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 16:30:35,534 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 16:30:35,534 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 16:30:35,536 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:35" (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 16:30:35,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 16:30:35,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 16:30:35,589 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-02 16:30:35,589 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 16:30:35,589 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 16:30:35,589 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-02 16:30:35,589 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-02 16:30:35,590 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 16:30:35,590 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 16:30:35,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-02 16:30:35,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-02 16:30:35,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-02 16:30:35,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-02 16:30:35,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 16:30:35,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 16:30:35,921 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 16:30:35,921 INFO L283 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-02 16:30:35,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:30:35 BoogieIcfgContainer [2019-10-02 16:30:35,922 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 16:30:35,923 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 16:30:35,923 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 16:30:35,927 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 16:30:35,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 04:30:35" (1/3) ... [2019-10-02 16:30:35,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b12ce4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:30:35, skipping insertion in model container [2019-10-02 16:30:35,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:35" (2/3) ... [2019-10-02 16:30:35,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b12ce4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:30:35, skipping insertion in model container [2019-10-02 16:30:35,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:30:35" (3/3) ... [2019-10-02 16:30:35,930 INFO L109 eAbstractionObserver]: Analyzing ICFG pr5.c [2019-10-02 16:30:35,939 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 16:30:35,945 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 16:30:35,961 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 16:30:35,984 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 16:30:35,984 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 16:30:35,984 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 16:30:35,984 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 16:30:35,985 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 16:30:35,985 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 16:30:35,985 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 16:30:35,985 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 16:30:36,003 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2019-10-02 16:30:36,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-02 16:30:36,016 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:36,017 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:30:36,023 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:36,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:36,029 INFO L82 PathProgramCache]: Analyzing trace with hash 65656709, now seen corresponding path program 1 times [2019-10-02 16:30:36,031 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:36,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:36,097 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:36,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:36,097 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:36,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:36,312 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 16:30:36,314 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:30:36,314 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 16:30:36,314 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:36,319 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 16:30:36,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 16:30:36,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-02 16:30:36,332 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2019-10-02 16:30:36,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:36,410 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2019-10-02 16:30:36,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-02 16:30:36,412 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-10-02 16:30:36,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:36,423 INFO L225 Difference]: With dead ends: 39 [2019-10-02 16:30:36,423 INFO L226 Difference]: Without dead ends: 33 [2019-10-02 16:30:36,425 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-02 16:30:36,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-10-02 16:30:36,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2019-10-02 16:30:36,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-10-02 16:30:36,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2019-10-02 16:30:36,472 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 16 [2019-10-02 16:30:36,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:36,474 INFO L475 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2019-10-02 16:30:36,474 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 16:30:36,474 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2019-10-02 16:30:36,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-02 16:30:36,476 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:36,476 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:30:36,477 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:36,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:36,478 INFO L82 PathProgramCache]: Analyzing trace with hash 67503751, now seen corresponding path program 1 times [2019-10-02 16:30:36,478 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:36,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:36,481 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:36,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:36,481 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:36,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:36,703 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 16:30:36,704 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:30:36,704 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 16:30:36,705 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:36,706 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 16:30:36,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 16:30:36,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 16:30:36,707 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand 4 states. [2019-10-02 16:30:36,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:36,805 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2019-10-02 16:30:36,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 16:30:36,805 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2019-10-02 16:30:36,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:36,809 INFO L225 Difference]: With dead ends: 39 [2019-10-02 16:30:36,809 INFO L226 Difference]: Without dead ends: 39 [2019-10-02 16:30:36,810 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 16:30:36,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-10-02 16:30:36,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2019-10-02 16:30:36,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-10-02 16:30:36,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2019-10-02 16:30:36,816 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 16 [2019-10-02 16:30:36,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:36,816 INFO L475 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2019-10-02 16:30:36,816 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 16:30:36,816 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2019-10-02 16:30:36,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-02 16:30:36,817 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:36,817 INFO L411 BasicCegarLoop]: trace histogram [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 16:30:36,818 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:36,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:36,818 INFO L82 PathProgramCache]: Analyzing trace with hash -335534155, now seen corresponding path program 1 times [2019-10-02 16:30:36,818 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:36,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:36,820 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:36,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:36,820 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:36,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:37,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:30:37,212 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 16:30:37,214 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 16:30:37,215 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 24 with the following transitions: [2019-10-02 16:30:37,216 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [8], [12], [18], [20], [23], [29], [35], [41], [49], [51], [55], [63], [68], [83], [86], [88], [94], [95], [96], [98] [2019-10-02 16:30:37,250 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 16:30:37,250 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-02 16:30:37,338 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-02 16:30:37,340 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Performed 21 root evaluator evaluations with a maximum evaluation depth of 2. Performed 21 inverse root evaluator evaluations with a maximum inverse evaluation depth of 2. Never found a fixpoint. Largest state had 28 variables. [2019-10-02 16:30:37,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:37,343 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-02 16:30:37,387 INFO L227 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 96.67% of their original sizes. [2019-10-02 16:30:37,387 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-02 16:30:37,399 INFO L420 sIntCurrentIteration]: We unified 22 AI predicates to 22 [2019-10-02 16:30:37,400 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-02 16:30:37,400 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 16:30:37,401 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2019-10-02 16:30:37,401 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:37,401 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 16:30:37,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 16:30:37,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:30:37,402 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand 3 states. [2019-10-02 16:30:37,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:37,404 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2019-10-02 16:30:37,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:30:37,404 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2019-10-02 16:30:37,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:37,404 INFO L225 Difference]: With dead ends: 7 [2019-10-02 16:30:37,405 INFO L226 Difference]: Without dead ends: 0 [2019-10-02 16:30:37,405 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:30:37,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-02 16:30:37,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-02 16:30:37,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-02 16:30:37,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-02 16:30:37,406 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2019-10-02 16:30:37,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:37,406 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-02 16:30:37,406 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 16:30:37,406 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-02 16:30:37,407 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-02 16:30:37,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 04:30:37 BoogieIcfgContainer [2019-10-02 16:30:37,413 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 16:30:37,415 INFO L168 Benchmark]: Toolchain (without parser) took 2319.73 ms. Allocated memory was 133.2 MB in the beginning and 224.9 MB in the end (delta: 91.8 MB). Free memory was 87.6 MB in the beginning and 186.0 MB in the end (delta: -98.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-10-02 16:30:37,416 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 133.2 MB. Free memory was 106.0 MB in the beginning and 105.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-02 16:30:37,419 INFO L168 Benchmark]: CACSL2BoogieTranslator took 389.76 ms. Allocated memory was 133.2 MB in the beginning and 200.3 MB in the end (delta: 67.1 MB). Free memory was 87.2 MB in the beginning and 177.7 MB in the end (delta: -90.4 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:37,421 INFO L168 Benchmark]: Boogie Preprocessor took 46.75 ms. Allocated memory is still 200.3 MB. Free memory was 177.7 MB in the beginning and 175.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:37,422 INFO L168 Benchmark]: RCFGBuilder took 388.63 ms. Allocated memory is still 200.3 MB. Free memory was 175.4 MB in the beginning and 157.1 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:37,424 INFO L168 Benchmark]: TraceAbstraction took 1489.70 ms. Allocated memory was 200.3 MB in the beginning and 224.9 MB in the end (delta: 24.6 MB). Free memory was 156.5 MB in the beginning and 186.0 MB in the end (delta: -29.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-10-02 16:30:37,431 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 133.2 MB. Free memory was 106.0 MB in the beginning and 105.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 389.76 ms. Allocated memory was 133.2 MB in the beginning and 200.3 MB in the end (delta: 67.1 MB). Free memory was 87.2 MB in the beginning and 177.7 MB in the end (delta: -90.4 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 46.75 ms. Allocated memory is still 200.3 MB. Free memory was 177.7 MB in the beginning and 175.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 388.63 ms. Allocated memory is still 200.3 MB. Free memory was 175.4 MB in the beginning and 157.1 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1489.70 ms. Allocated memory was 200.3 MB in the beginning and 224.9 MB in the end (delta: 24.6 MB). Free memory was 156.5 MB in the beginning and 186.0 MB in the end (delta: -29.5 MB). There was no memory consumed. 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 4 procedures, 33 locations, 1 error locations. SAFE Result, 1.4s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 65 SDtfs, 58 SDslu, 126 SDs, 0 SdLazy, 51 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred 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, 0.9242424242424242 AbsIntWeakeningRatio, 0.9545454545454546 AbsIntAvgWeakeningVarsNumRemoved, 0.7272727272727273 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 5520 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/1 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...