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-examples/standard_init7_ground-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 16:30:03,425 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 16:30:03,429 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 16:30:03,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 16:30:03,443 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 16:30:03,444 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 16:30:03,445 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 16:30:03,447 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 16:30:03,448 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 16:30:03,449 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 16:30:03,450 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 16:30:03,451 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 16:30:03,452 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 16:30:03,453 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 16:30:03,454 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 16:30:03,455 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 16:30:03,455 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 16:30:03,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 16:30:03,458 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 16:30:03,460 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 16:30:03,462 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 16:30:03,463 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 16:30:03,464 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 16:30:03,465 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 16:30:03,467 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-02 16:30:03,471 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 16:30:03,471 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 16:30:03,472 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 16:30:03,473 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 16:30:03,474 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 16:30:03,476 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 16:30:03,477 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 16:30:03,477 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 16:30:03,477 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 16:30:03,478 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 16:30:03,479 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 16:30:03,479 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 16:30:03,501 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 16:30:03,501 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 16:30:03,502 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 16:30:03,502 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 16:30:03,503 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 16:30:03,503 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 16:30:03,504 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 16:30:03,504 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 16:30:03,504 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 16:30:03,504 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 16:30:03,505 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 16:30:03,505 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 16:30:03,506 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 16:30:03,506 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 16:30:03,506 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 16:30:03,506 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 16:30:03,506 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 16:30:03,507 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 16:30:03,509 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 16:30:03,509 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 16:30:03,510 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 16:30:03,510 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 16:30:03,510 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 16:30:03,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 16:30:03,510 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 16:30:03,511 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 16:30:03,511 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 16:30:03,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 16:30:03,511 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 16:30:03,511 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 16:30:03,539 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 16:30:03,555 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 16:30:03,558 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 16:30:03,560 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 16:30:03,560 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 16:30:03,561 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_init7_ground-2.i [2019-10-02 16:30:03,630 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45d3f24d8/ea81aced4f1345f2b5c2b325c8036bfd/FLAGaff5cdcc3 [2019-10-02 16:30:04,025 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 16:30:04,025 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_init7_ground-2.i [2019-10-02 16:30:04,031 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45d3f24d8/ea81aced4f1345f2b5c2b325c8036bfd/FLAGaff5cdcc3 [2019-10-02 16:30:04,455 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45d3f24d8/ea81aced4f1345f2b5c2b325c8036bfd [2019-10-02 16:30:04,465 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 16:30:04,467 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 16:30:04,467 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 16:30:04,468 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 16:30:04,471 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 16:30:04,472 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:30:04" (1/1) ... [2019-10-02 16:30:04,475 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@354e775 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:04, skipping insertion in model container [2019-10-02 16:30:04,475 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:30:04" (1/1) ... [2019-10-02 16:30:04,482 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 16:30:04,501 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 16:30:04,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:30:04,712 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 16:30:04,760 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:30:04,879 INFO L192 MainTranslator]: Completed translation [2019-10-02 16:30:04,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:04 WrapperNode [2019-10-02 16:30:04,879 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 16:30:04,880 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 16:30:04,880 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 16:30:04,880 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 16:30:04,894 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:04" (1/1) ... [2019-10-02 16:30:04,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:04" (1/1) ... [2019-10-02 16:30:04,903 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:04" (1/1) ... [2019-10-02 16:30:04,904 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:04" (1/1) ... [2019-10-02 16:30:04,911 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:04" (1/1) ... [2019-10-02 16:30:04,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:04" (1/1) ... [2019-10-02 16:30:04,924 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:04" (1/1) ... [2019-10-02 16:30:04,930 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 16:30:04,930 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 16:30:04,930 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 16:30:04,930 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 16:30:04,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:04" (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 16:30:04,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 16:30:04,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 16:30:04,988 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-02 16:30:04,988 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 16:30:04,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 16:30:04,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-02 16:30:04,988 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 16:30:04,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-02 16:30:04,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-02 16:30:04,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-02 16:30:04,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-02 16:30:04,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 16:30:04,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 16:30:05,245 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 16:30:05,246 INFO L283 CfgBuilder]: Removed 8 assume(true) statements. [2019-10-02 16:30:05,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:30:05 BoogieIcfgContainer [2019-10-02 16:30:05,247 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 16:30:05,248 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 16:30:05,249 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 16:30:05,252 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 16:30:05,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 04:30:04" (1/3) ... [2019-10-02 16:30:05,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72705c74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:30:05, skipping insertion in model container [2019-10-02 16:30:05,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:04" (2/3) ... [2019-10-02 16:30:05,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72705c74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:30:05, skipping insertion in model container [2019-10-02 16:30:05,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:30:05" (3/3) ... [2019-10-02 16:30:05,255 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_init7_ground-2.i [2019-10-02 16:30:05,265 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 16:30:05,279 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 16:30:05,307 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 16:30:05,343 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 16:30:05,343 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 16:30:05,343 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 16:30:05,343 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 16:30:05,344 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 16:30:05,344 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 16:30:05,344 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 16:30:05,344 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 16:30:05,361 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2019-10-02 16:30:05,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-02 16:30:05,372 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:05,373 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, 1, 1] [2019-10-02 16:30:05,375 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:05,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:05,382 INFO L82 PathProgramCache]: Analyzing trace with hash -190793262, now seen corresponding path program 1 times [2019-10-02 16:30:05,384 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:05,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:05,446 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:05,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:05,447 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:05,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:05,555 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 16:30:05,557 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:30:05,557 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-02 16:30:05,558 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:05,562 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 16:30:05,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 16:30:05,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:30:05,575 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states. [2019-10-02 16:30:05,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:05,590 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2019-10-02 16:30:05,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 16:30:05,591 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2019-10-02 16:30:05,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:05,599 INFO L225 Difference]: With dead ends: 35 [2019-10-02 16:30:05,599 INFO L226 Difference]: Without dead ends: 30 [2019-10-02 16:30:05,601 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:30:05,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-10-02 16:30:05,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-10-02 16:30:05,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-10-02 16:30:05,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2019-10-02 16:30:05,639 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 25 [2019-10-02 16:30:05,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:05,640 INFO L475 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2019-10-02 16:30:05,640 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 16:30:05,640 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2019-10-02 16:30:05,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-02 16:30:05,641 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:05,641 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, 1, 1] [2019-10-02 16:30:05,642 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:05,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:05,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1826977482, now seen corresponding path program 1 times [2019-10-02 16:30:05,642 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:05,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:05,644 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:05,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:05,645 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:05,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:05,697 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 16:30:05,698 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:30:05,698 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 16:30:05,698 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:05,702 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 16:30:05,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 16:30:05,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:30:05,703 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 3 states. [2019-10-02 16:30:05,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:05,813 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2019-10-02 16:30:05,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:30:05,814 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2019-10-02 16:30:05,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:05,815 INFO L225 Difference]: With dead ends: 37 [2019-10-02 16:30:05,815 INFO L226 Difference]: Without dead ends: 37 [2019-10-02 16:30:05,816 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:30:05,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-10-02 16:30:05,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-10-02 16:30:05,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-10-02 16:30:05,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2019-10-02 16:30:05,823 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 25 [2019-10-02 16:30:05,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:05,823 INFO L475 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2019-10-02 16:30:05,823 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 16:30:05,824 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2019-10-02 16:30:05,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-02 16:30:05,825 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:05,825 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:30:05,825 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:05,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:05,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1635964633, now seen corresponding path program 1 times [2019-10-02 16:30:05,826 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:05,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:05,828 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:05,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:05,828 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:05,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:05,915 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-02 16:30:05,915 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 16:30:05,916 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 16:30:05,916 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 33 with the following transitions: [2019-10-02 16:30:05,918 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [12], [14], [18], [25], [27], [31], [38], [40], [44], [51], [53], [57], [64], [66], [70], [77], [79], [83], [90], [92], [96], [104], [114], [117], [119], [125], [126], [127], [129] [2019-10-02 16:30:05,955 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 16:30:05,955 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-02 16:30:06,026 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-02 16:30:06,028 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 15 root evaluator evaluations with a maximum evaluation depth of 0. Performed 15 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 17 variables. [2019-10-02 16:30:06,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:06,031 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-02 16:30:06,067 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-02 16:30:06,067 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-02 16:30:06,070 INFO L420 sIntCurrentIteration]: We unified 31 AI predicates to 31 [2019-10-02 16:30:06,070 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-02 16:30:06,070 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 16:30:06,071 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2019-10-02 16:30:06,071 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:06,071 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 16:30:06,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 16:30:06,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:30:06,072 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand 2 states. [2019-10-02 16:30:06,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:06,073 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-10-02 16:30:06,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 16:30:06,073 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 32 [2019-10-02 16:30:06,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:06,074 INFO L225 Difference]: With dead ends: 6 [2019-10-02 16:30:06,074 INFO L226 Difference]: Without dead ends: 0 [2019-10-02 16:30:06,074 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:30:06,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-02 16:30:06,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-02 16:30:06,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-02 16:30:06,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-02 16:30:06,075 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2019-10-02 16:30:06,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:06,076 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-02 16:30:06,076 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 16:30:06,076 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-02 16:30:06,076 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-02 16:30:06,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 04:30:06 BoogieIcfgContainer [2019-10-02 16:30:06,081 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 16:30:06,084 INFO L168 Benchmark]: Toolchain (without parser) took 1616.47 ms. Allocated memory was 137.4 MB in the beginning and 197.7 MB in the end (delta: 60.3 MB). Free memory was 85.0 MB in the beginning and 110.4 MB in the end (delta: -25.4 MB). Peak memory consumption was 34.9 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:06,085 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 137.4 MB. Free memory was 103.3 MB in the beginning and 103.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-02 16:30:06,086 INFO L168 Benchmark]: CACSL2BoogieTranslator took 412.29 ms. Allocated memory was 137.4 MB in the beginning and 197.7 MB in the end (delta: 60.3 MB). Free memory was 84.6 MB in the beginning and 176.0 MB in the end (delta: -91.4 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:06,087 INFO L168 Benchmark]: Boogie Preprocessor took 49.73 ms. Allocated memory is still 197.7 MB. Free memory was 176.0 MB in the beginning and 173.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:06,088 INFO L168 Benchmark]: RCFGBuilder took 317.48 ms. Allocated memory is still 197.7 MB. Free memory was 173.6 MB in the beginning and 156.9 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:06,089 INFO L168 Benchmark]: TraceAbstraction took 833.03 ms. Allocated memory is still 197.7 MB. Free memory was 156.2 MB in the beginning and 110.4 MB in the end (delta: 45.8 MB). Peak memory consumption was 45.8 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:06,093 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 137.4 MB. Free memory was 103.3 MB in the beginning and 103.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 412.29 ms. Allocated memory was 137.4 MB in the beginning and 197.7 MB in the end (delta: 60.3 MB). Free memory was 84.6 MB in the beginning and 176.0 MB in the end (delta: -91.4 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 49.73 ms. Allocated memory is still 197.7 MB. Free memory was 176.0 MB in the beginning and 173.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 317.48 ms. Allocated memory is still 197.7 MB. Free memory was 173.6 MB in the beginning and 156.9 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 833.03 ms. Allocated memory is still 197.7 MB. Free memory was 156.2 MB in the beginning and 110.4 MB in the end (delta: 45.8 MB). Peak memory consumption was 45.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2]: 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, 35 locations, 1 error locations. SAFE Result, 0.7s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 77 SDtfs, 0 SDslu, 16 SDs, 0 SdLazy, 21 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=2, 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, 0.9758064516129032 AbsIntWeakeningRatio, 0.4838709677419355 AbsIntAvgWeakeningVarsNumRemoved, 0.1935483870967742 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 82 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 79 ConstructedInterpolants, 0 QuantifiedInterpolants, 2285 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 6/7 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...