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/pr4.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 16:30:34,180 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 16:30:34,182 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 16:30:34,194 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 16:30:34,194 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 16:30:34,195 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 16:30:34,197 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 16:30:34,199 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 16:30:34,200 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 16:30:34,201 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 16:30:34,202 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 16:30:34,204 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 16:30:34,204 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 16:30:34,205 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 16:30:34,206 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 16:30:34,207 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 16:30:34,208 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 16:30:34,209 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 16:30:34,211 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 16:30:34,213 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 16:30:34,215 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 16:30:34,216 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 16:30:34,217 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 16:30:34,218 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 16:30:34,220 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-02 16:30:34,224 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 16:30:34,224 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 16:30:34,225 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 16:30:34,226 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 16:30:34,227 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 16:30:34,227 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 16:30:34,228 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 16:30:34,228 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 16:30:34,229 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 16:30:34,230 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 16:30:34,230 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 16:30:34,231 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 16:30:34,247 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 16:30:34,247 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 16:30:34,247 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 16:30:34,247 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 16:30:34,248 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 16:30:34,248 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 16:30:34,249 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 16:30:34,249 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 16:30:34,249 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 16:30:34,249 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 16:30:34,250 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 16:30:34,250 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 16:30:34,251 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 16:30:34,251 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 16:30:34,251 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 16:30:34,251 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 16:30:34,251 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 16:30:34,252 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 16:30:34,252 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 16:30:34,252 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 16:30:34,252 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 16:30:34,253 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 16:30:34,253 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 16:30:34,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 16:30:34,253 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 16:30:34,253 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 16:30:34,254 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 16:30:34,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 16:30:34,254 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 16:30:34,254 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 16:30:34,283 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 16:30:34,300 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 16:30:34,304 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 16:30:34,305 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 16:30:34,306 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 16:30:34,307 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/pr4.c [2019-10-02 16:30:34,379 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/403c4da53/283c623d084b444ba3664ff92417e1cb/FLAG71a2f97ab [2019-10-02 16:30:34,886 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 16:30:34,887 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/pr4.c [2019-10-02 16:30:34,901 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/403c4da53/283c623d084b444ba3664ff92417e1cb/FLAG71a2f97ab [2019-10-02 16:30:35,209 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/403c4da53/283c623d084b444ba3664ff92417e1cb [2019-10-02 16:30:35,218 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 16:30:35,219 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 16:30:35,223 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 16:30:35,224 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 16:30:35,228 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 16:30:35,229 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:30:35" (1/1) ... [2019-10-02 16:30:35,233 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@549d6b6f 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 16:30:35,233 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:30:35" (1/1) ... [2019-10-02 16:30:35,240 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 16:30:35,261 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 16:30:35,457 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:30:35,462 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 16:30:35,492 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:30:35,614 INFO L192 MainTranslator]: Completed translation [2019-10-02 16:30:35,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:35 WrapperNode [2019-10-02 16:30:35,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 16:30:35,616 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 16:30:35,617 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 16:30:35,617 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 16:30:35,630 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 16:30:35,630 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 16:30:35,637 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 16:30:35,638 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 16:30:35,646 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 16:30:35,652 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 16:30:35,653 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 16:30:35,655 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 16:30:35,656 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 16:30:35,656 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 16:30:35,656 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 16:30:35,658 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 16:30:35,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 16:30:35,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 16:30:35,716 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-02 16:30:35,716 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 16:30:35,716 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 16:30:35,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-02 16:30:35,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-02 16:30:35,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 16:30:35,717 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 16:30:35,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-02 16:30:35,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-02 16:30:35,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-02 16:30:35,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-02 16:30:35,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 16:30:35,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 16:30:36,046 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 16:30:36,047 INFO L283 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-02 16:30:36,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:30:36 BoogieIcfgContainer [2019-10-02 16:30:36,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 16:30:36,049 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 16:30:36,049 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 16:30:36,052 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 16:30:36,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 04:30:35" (1/3) ... [2019-10-02 16:30:36,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a54057c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:30:36, skipping insertion in model container [2019-10-02 16:30:36,053 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 16:30:36,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a54057c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:30:36, skipping insertion in model container [2019-10-02 16:30:36,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:30:36" (3/3) ... [2019-10-02 16:30:36,055 INFO L109 eAbstractionObserver]: Analyzing ICFG pr4.c [2019-10-02 16:30:36,066 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 16:30:36,074 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 16:30:36,091 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 16:30:36,116 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 16:30:36,116 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 16:30:36,116 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 16:30:36,116 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 16:30:36,116 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 16:30:36,117 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 16:30:36,117 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 16:30:36,117 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 16:30:36,130 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-10-02 16:30:36,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-02 16:30:36,140 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:36,141 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:30:36,143 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:36,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:36,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1387739323, now seen corresponding path program 1 times [2019-10-02 16:30:36,152 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:36,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:36,205 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:36,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:36,205 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:36,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:36,369 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 16:30:36,371 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:30:36,371 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 16:30:36,372 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:36,376 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 16:30:36,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 16:30:36,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-02 16:30:36,390 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 5 states. [2019-10-02 16:30:36,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:36,473 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2019-10-02 16:30:36,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-02 16:30:36,474 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-10-02 16:30:36,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:36,484 INFO L225 Difference]: With dead ends: 38 [2019-10-02 16:30:36,484 INFO L226 Difference]: Without dead ends: 32 [2019-10-02 16:30:36,487 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 16:30:36,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-10-02 16:30:36,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2019-10-02 16:30:36,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-10-02 16:30:36,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2019-10-02 16:30:36,528 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 16 [2019-10-02 16:30:36,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:36,529 INFO L475 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2019-10-02 16:30:36,529 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 16:30:36,529 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2019-10-02 16:30:36,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-02 16:30:36,530 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:36,531 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:30:36,531 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:36,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:36,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1385892281, now seen corresponding path program 1 times [2019-10-02 16:30:36,532 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:36,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:36,535 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:36,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:36,537 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:36,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:36,780 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 16:30:36,781 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:30:36,781 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 16:30:36,781 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:36,783 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 16:30:36,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 16:30:36,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 16:30:36,784 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand 4 states. [2019-10-02 16:30:36,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:36,865 INFO L93 Difference]: Finished difference Result 37 states and 47 transitions. [2019-10-02 16:30:36,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 16:30:36,865 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2019-10-02 16:30:36,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:36,869 INFO L225 Difference]: With dead ends: 37 [2019-10-02 16:30:36,869 INFO L226 Difference]: Without dead ends: 37 [2019-10-02 16:30:36,870 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 16:30:36,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-10-02 16:30:36,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2019-10-02 16:30:36,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-10-02 16:30:36,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2019-10-02 16:30:36,876 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 16 [2019-10-02 16:30:36,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:36,877 INFO L475 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2019-10-02 16:30:36,877 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 16:30:36,877 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2019-10-02 16:30:36,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-02 16:30:36,878 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:36,878 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] [2019-10-02 16:30:36,879 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:36,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:36,879 INFO L82 PathProgramCache]: Analyzing trace with hash 830594452, now seen corresponding path program 1 times [2019-10-02 16:30:36,879 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:36,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:36,881 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:36,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:36,882 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:36,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:37,330 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 16:30:37,331 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 16:30:37,331 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 16:30:37,332 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 23 with the following transitions: [2019-10-02 16:30:37,334 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [8], [12], [18], [20], [23], [29], [35], [41], [45], [49], [57], [62], [77], [80], [82], [88], [89], [90], [92] [2019-10-02 16:30:37,387 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 16:30:37,387 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-02 16:30:37,508 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-02 16:30:37,511 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 27 variables. [2019-10-02 16:30:37,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:37,517 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-02 16:30:37,580 INFO L227 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 96.67% of their original sizes. [2019-10-02 16:30:37,581 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-02 16:30:37,594 INFO L420 sIntCurrentIteration]: We unified 21 AI predicates to 21 [2019-10-02 16:30:37,596 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-02 16:30:37,597 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 16:30:37,597 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2019-10-02 16:30:37,597 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:37,599 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 16:30:37,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 16:30:37,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:30:37,600 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 3 states. [2019-10-02 16:30:37,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:37,603 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2019-10-02 16:30:37,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:30:37,604 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2019-10-02 16:30:37,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:37,604 INFO L225 Difference]: With dead ends: 7 [2019-10-02 16:30:37,605 INFO L226 Difference]: Without dead ends: 0 [2019-10-02 16:30:37,605 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 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 16:30:37,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-02 16:30:37,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-02 16:30:37,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-02 16:30:37,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-02 16:30:37,606 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2019-10-02 16:30:37,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:37,607 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-02 16:30:37,607 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 16:30:37,607 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-02 16:30:37,607 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-02 16:30:37,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 04:30:37 BoogieIcfgContainer [2019-10-02 16:30:37,613 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 16:30:37,616 INFO L168 Benchmark]: Toolchain (without parser) took 2395.48 ms. Allocated memory was 133.2 MB in the beginning and 224.9 MB in the end (delta: 91.8 MB). Free memory was 89.0 MB in the beginning and 182.6 MB in the end (delta: -93.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-10-02 16:30:37,617 INFO L168 Benchmark]: CDTParser took 0.99 ms. Allocated memory is still 133.2 MB. Free memory is still 107.0 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-10-02 16:30:37,620 INFO L168 Benchmark]: CACSL2BoogieTranslator took 392.30 ms. Allocated memory was 133.2 MB in the beginning and 200.8 MB in the end (delta: 67.6 MB). Free memory was 89.0 MB in the beginning and 179.9 MB in the end (delta: -91.0 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:37,622 INFO L168 Benchmark]: Boogie Preprocessor took 39.48 ms. Allocated memory is still 200.8 MB. Free memory was 179.9 MB in the beginning and 175.7 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:37,623 INFO L168 Benchmark]: RCFGBuilder took 392.13 ms. Allocated memory is still 200.8 MB. Free memory was 175.7 MB in the beginning and 158.2 MB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:37,624 INFO L168 Benchmark]: TraceAbstraction took 1564.17 ms. Allocated memory was 200.8 MB in the beginning and 224.9 MB in the end (delta: 24.1 MB). Free memory was 157.3 MB in the beginning and 182.6 MB in the end (delta: -25.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-10-02 16:30:37,636 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.99 ms. Allocated memory is still 133.2 MB. Free memory is still 107.0 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 392.30 ms. Allocated memory was 133.2 MB in the beginning and 200.8 MB in the end (delta: 67.6 MB). Free memory was 89.0 MB in the beginning and 179.9 MB in the end (delta: -91.0 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 39.48 ms. Allocated memory is still 200.8 MB. Free memory was 179.9 MB in the beginning and 175.7 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 392.13 ms. Allocated memory is still 200.8 MB. Free memory was 175.7 MB in the beginning and 158.2 MB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1564.17 ms. Allocated memory was 200.8 MB in the beginning and 224.9 MB in the end (delta: 24.1 MB). Free memory was 157.3 MB in the beginning and 182.6 MB in the end (delta: -25.2 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 4 procedures, 32 locations, 1 error locations. SAFE Result, 1.5s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 63 SDtfs, 52 SDslu, 120 SDs, 0 SdLazy, 47 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 0.9285714285714286 AbsIntWeakeningRatio, 0.9523809523809523 AbsIntAvgWeakeningVarsNumRemoved, 0.7619047619047619 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 51 ConstructedInterpolants, 0 QuantifiedInterpolants, 5205 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...