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/pnr3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 05:33:57,109 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 05:33:57,111 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 05:33:57,124 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-09 05:33:57,125 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-09 05:33:57,126 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-09 05:33:57,127 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-09 05:33:57,129 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-09 05:33:57,131 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-09 05:33:57,132 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-09 05:33:57,133 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-09 05:33:57,134 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-09 05:33:57,134 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-09 05:33:57,135 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-09 05:33:57,136 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-09 05:33:57,137 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-09 05:33:57,138 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-09 05:33:57,139 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-09 05:33:57,141 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-09 05:33:57,143 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-09 05:33:57,145 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-09 05:33:57,146 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-09 05:33:57,147 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-09 05:33:57,148 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-09 05:33:57,151 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-09 05:33:57,154 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-09 05:33:57,155 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-09 05:33:57,156 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-09 05:33:57,156 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-09 05:33:57,157 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-09 05:33:57,158 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-09 05:33:57,158 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-09 05:33:57,159 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-09 05:33:57,159 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 05:33:57,160 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 05:33:57,160 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 05:33:57,165 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 [2019-09-09 05:33:57,182 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 05:33:57,182 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 05:33:57,182 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 05:33:57,183 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 05:33:57,183 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 05:33:57,184 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 05:33:57,184 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 05:33:57,184 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 05:33:57,184 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 05:33:57,184 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 05:33:57,185 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 05:33:57,185 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 05:33:57,186 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 05:33:57,186 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 05:33:57,186 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 05:33:57,186 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 05:33:57,186 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 05:33:57,187 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 05:33:57,187 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 05:33:57,187 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 05:33:57,187 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 05:33:57,188 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 05:33:57,188 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 05:33:57,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 05:33:57,188 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 05:33:57,188 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 05:33:57,189 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 05:33:57,189 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 05:33:57,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 05:33:57,189 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 05:33:57,221 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 05:33:57,234 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 05:33:57,239 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 05:33:57,240 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 05:33:57,241 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 05:33:57,242 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/pnr3.c [2019-09-09 05:33:57,321 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24983f036/3387f416edc94ded9b9b21120c7c4cc0/FLAG87dcdf44d [2019-09-09 05:33:57,856 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 05:33:57,857 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/pnr3.c [2019-09-09 05:33:57,866 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24983f036/3387f416edc94ded9b9b21120c7c4cc0/FLAG87dcdf44d [2019-09-09 05:33:58,255 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24983f036/3387f416edc94ded9b9b21120c7c4cc0 [2019-09-09 05:33:58,267 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 05:33:58,269 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 05:33:58,270 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 05:33:58,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 05:33:58,274 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 05:33:58,276 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 05:33:58" (1/1) ... [2019-09-09 05:33:58,279 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14cf7c01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:33:58, skipping insertion in model container [2019-09-09 05:33:58,279 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 05:33:58" (1/1) ... [2019-09-09 05:33:58,289 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 05:33:58,314 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 05:33:58,510 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 05:33:58,522 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 05:33:58,545 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 05:33:58,662 INFO L192 MainTranslator]: Completed translation [2019-09-09 05:33:58,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:33:58 WrapperNode [2019-09-09 05:33:58,663 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 05:33:58,664 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 05:33:58,664 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 05:33:58,664 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 05:33:58,678 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:33:58" (1/1) ... [2019-09-09 05:33:58,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:33:58" (1/1) ... [2019-09-09 05:33:58,689 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:33:58" (1/1) ... [2019-09-09 05:33:58,690 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:33:58" (1/1) ... [2019-09-09 05:33:58,699 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:33:58" (1/1) ... [2019-09-09 05:33:58,705 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:33:58" (1/1) ... [2019-09-09 05:33:58,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:33:58" (1/1) ... [2019-09-09 05:33:58,710 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 05:33:58,711 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 05:33:58,711 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 05:33:58,711 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 05:33:58,713 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:33:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 05:33:58,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 05:33:58,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 05:33:58,785 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-09 05:33:58,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ReadFromPort [2019-09-09 05:33:58,785 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 05:33:58,785 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 05:33:58,785 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-09 05:33:58,786 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-09 05:33:58,786 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 05:33:58,786 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-09 05:33:58,786 INFO L130 BoogieDeclarations]: Found specification of procedure ReadFromPort [2019-09-09 05:33:58,786 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 05:33:58,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-09 05:33:58,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-09 05:33:58,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-09 05:33:58,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 05:33:58,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 05:33:58,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-09 05:33:59,173 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 05:33:59,174 INFO L283 CfgBuilder]: Removed 2 assume(true) statements. [2019-09-09 05:33:59,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 05:33:59 BoogieIcfgContainer [2019-09-09 05:33:59,176 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 05:33:59,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 05:33:59,177 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 05:33:59,181 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 05:33:59,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 05:33:58" (1/3) ... [2019-09-09 05:33:59,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b7bed3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 05:33:59, skipping insertion in model container [2019-09-09 05:33:59,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:33:58" (2/3) ... [2019-09-09 05:33:59,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b7bed3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 05:33:59, skipping insertion in model container [2019-09-09 05:33:59,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 05:33:59" (3/3) ... [2019-09-09 05:33:59,185 INFO L109 eAbstractionObserver]: Analyzing ICFG pnr3.c [2019-09-09 05:33:59,196 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 05:33:59,204 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 05:33:59,222 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 05:33:59,253 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 05:33:59,253 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 05:33:59,253 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 05:33:59,253 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 05:33:59,253 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 05:33:59,254 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 05:33:59,254 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 05:33:59,254 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 05:33:59,271 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2019-09-09 05:33:59,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-09-09 05:33:59,283 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:33:59,284 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 05:33:59,286 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:33:59,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:33:59,293 INFO L82 PathProgramCache]: Analyzing trace with hash 342601179, now seen corresponding path program 1 times [2019-09-09 05:33:59,296 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:33:59,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:33:59,343 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:33:59,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:33:59,344 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:33:59,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:33:59,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 05:33:59,452 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 05:33:59,452 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-09 05:33:59,453 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:33:59,457 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-09 05:33:59,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-09 05:33:59,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-09 05:33:59,473 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2019-09-09 05:33:59,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:33:59,498 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2019-09-09 05:33:59,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-09 05:33:59,500 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2019-09-09 05:33:59,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:33:59,510 INFO L225 Difference]: With dead ends: 38 [2019-09-09 05:33:59,510 INFO L226 Difference]: Without dead ends: 33 [2019-09-09 05:33:59,513 INFO L628 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 [2019-09-09 05:33:59,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-09-09 05:33:59,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2019-09-09 05:33:59,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-09-09 05:33:59,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2019-09-09 05:33:59,565 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 15 [2019-09-09 05:33:59,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:33:59,566 INFO L475 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2019-09-09 05:33:59,566 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-09 05:33:59,566 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2019-09-09 05:33:59,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-09-09 05:33:59,568 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:33:59,568 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 05:33:59,569 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:33:59,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:33:59,569 INFO L82 PathProgramCache]: Analyzing trace with hash 374798206, now seen corresponding path program 1 times [2019-09-09 05:33:59,569 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:33:59,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:33:59,571 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:33:59,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:33:59,571 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:33:59,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:33:59,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 05:33:59,892 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 05:33:59,892 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-09 05:33:59,893 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:33:59,894 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-09 05:33:59,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-09 05:33:59,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 05:33:59,897 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 4 states. [2019-09-09 05:34:00,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:34:00,036 INFO L93 Difference]: Finished difference Result 44 states and 56 transitions. [2019-09-09 05:34:00,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 05:34:00,039 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-09-09 05:34:00,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:34:00,041 INFO L225 Difference]: With dead ends: 44 [2019-09-09 05:34:00,041 INFO L226 Difference]: Without dead ends: 44 [2019-09-09 05:34:00,042 INFO L628 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 [2019-09-09 05:34:00,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-09-09 05:34:00,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 34. [2019-09-09 05:34:00,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-09-09 05:34:00,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2019-09-09 05:34:00,063 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 15 [2019-09-09 05:34:00,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:34:00,064 INFO L475 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2019-09-09 05:34:00,064 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-09 05:34:00,065 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2019-09-09 05:34:00,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-09-09 05:34:00,068 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:34:00,068 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-09-09 05:34:00,068 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:34:00,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:34:00,069 INFO L82 PathProgramCache]: Analyzing trace with hash 919940654, now seen corresponding path program 1 times [2019-09-09 05:34:00,069 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:34:00,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:34:00,073 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:34:00,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:34:00,073 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:34:00,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:34:00,537 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-09-09 05:34:00,538 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 05:34:00,539 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 05:34:00,540 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 36 with the following transitions: [2019-09-09 05:34:00,543 INFO L207 CegarAbsIntRunner]: [0], [3], [7], [13], [15], [17], [20], [25], [28], [33], [36], [40], [44], [52], [65], [66], [67], [68], [72], [75], [77], [83], [84], [85], [86], [87], [88], [89], [91], [92], [93] [2019-09-09 05:34:00,626 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 05:34:00,626 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 05:34:00,712 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 05:34:00,714 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 30 variables. [2019-09-09 05:34:00,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:34:00,737 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 05:34:00,799 INFO L227 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 77.5% of their original sizes. [2019-09-09 05:34:00,799 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 05:34:00,809 INFO L420 sIntCurrentIteration]: We unified 34 AI predicates to 34 [2019-09-09 05:34:00,810 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 05:34:00,811 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 05:34:00,811 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-09-09 05:34:00,811 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:34:00,812 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-09 05:34:00,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-09 05:34:00,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 05:34:00,813 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand 4 states. [2019-09-09 05:34:00,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:34:00,815 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2019-09-09 05:34:00,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 05:34:00,815 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2019-09-09 05:34:00,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:34:00,816 INFO L225 Difference]: With dead ends: 7 [2019-09-09 05:34:00,816 INFO L226 Difference]: Without dead ends: 0 [2019-09-09 05:34:00,816 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 05:34:00,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-09 05:34:00,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-09 05:34:00,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-09 05:34:00,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-09 05:34:00,817 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2019-09-09 05:34:00,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:34:00,818 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-09 05:34:00,818 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-09 05:34:00,818 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-09 05:34:00,818 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-09 05:34:00,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.09 05:34:00 BoogieIcfgContainer [2019-09-09 05:34:00,824 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-09 05:34:00,827 INFO L168 Benchmark]: Toolchain (without parser) took 2557.46 ms. Allocated memory was 134.2 MB in the beginning and 229.1 MB in the end (delta: 94.9 MB). Free memory was 89.9 MB in the beginning and 191.3 MB in the end (delta: -101.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-09 05:34:00,828 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 134.2 MB. Free memory was 108.6 MB in the beginning and 108.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-09 05:34:00,829 INFO L168 Benchmark]: CACSL2BoogieTranslator took 393.21 ms. Allocated memory was 134.2 MB in the beginning and 201.9 MB in the end (delta: 67.6 MB). Free memory was 89.7 MB in the beginning and 179.2 MB in the end (delta: -89.5 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. [2019-09-09 05:34:00,830 INFO L168 Benchmark]: Boogie Preprocessor took 46.45 ms. Allocated memory is still 201.9 MB. Free memory was 179.2 MB in the beginning and 177.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2019-09-09 05:34:00,831 INFO L168 Benchmark]: RCFGBuilder took 465.38 ms. Allocated memory is still 201.9 MB. Free memory was 177.0 MB in the beginning and 159.1 MB in the end (delta: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 7.1 GB. [2019-09-09 05:34:00,832 INFO L168 Benchmark]: TraceAbstraction took 1647.20 ms. Allocated memory was 201.9 MB in the beginning and 229.1 MB in the end (delta: 27.3 MB). Free memory was 159.1 MB in the beginning and 191.3 MB in the end (delta: -32.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-09 05:34:00,836 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 134.2 MB. Free memory was 108.6 MB in the beginning and 108.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 393.21 ms. Allocated memory was 134.2 MB in the beginning and 201.9 MB in the end (delta: 67.6 MB). Free memory was 89.7 MB in the beginning and 179.2 MB in the end (delta: -89.5 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 46.45 ms. Allocated memory is still 201.9 MB. Free memory was 179.2 MB in the beginning and 177.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 465.38 ms. Allocated memory is still 201.9 MB. Free memory was 177.0 MB in the beginning and 159.1 MB in the end (delta: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1647.20 ms. Allocated memory was 201.9 MB in the beginning and 229.1 MB in the end (delta: 27.3 MB). Free memory was 159.1 MB in the beginning and 191.3 MB in the end (delta: -32.2 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 5 procedures, 38 locations, 1 error locations. SAFE Result, 1.5s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 80 SDtfs, 59 SDslu, 16 SDs, 0 SdLazy, 37 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred 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, 0.9669117647058824 AbsIntWeakeningRatio, 0.9117647058823529 AbsIntAvgWeakeningVarsNumRemoved, 0.6470588235294118 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 10 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 65 NumberOfCodeBlocks, 65 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 62 ConstructedInterpolants, 0 QuantifiedInterpolants, 8830 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 9/10 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...