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/loops/insertion_sort-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c6af20d [2019-09-03 20:36:38,490 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-03 20:36:38,492 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-03 20:36:38,503 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-03 20:36:38,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-03 20:36:38,513 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-03 20:36:38,514 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-03 20:36:38,515 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-03 20:36:38,516 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-03 20:36:38,517 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-03 20:36:38,518 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-03 20:36:38,520 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-03 20:36:38,521 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-03 20:36:38,522 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-03 20:36:38,523 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-03 20:36:38,524 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-03 20:36:38,526 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-03 20:36:38,529 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-03 20:36:38,530 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-03 20:36:38,531 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-03 20:36:38,532 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-03 20:36:38,533 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-03 20:36:38,533 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-03 20:36:38,533 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-03 20:36:38,534 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-03 20:36:38,534 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-03 20:36:38,535 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-03 20:36:38,535 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-03 20:36:38,536 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 [2019-09-03 20:36:38,550 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-03 20:36:38,550 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-03 20:36:38,551 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-03 20:36:38,551 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-03 20:36:38,551 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-03 20:36:38,552 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-03 20:36:38,552 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-03 20:36:38,552 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-03 20:36:38,552 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-03 20:36:38,553 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-03 20:36:38,553 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-03 20:36:38,553 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-03 20:36:38,554 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-03 20:36:38,554 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-03 20:36:38,554 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-03 20:36:38,554 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-03 20:36:38,555 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-03 20:36:38,555 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-03 20:36:38,555 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-03 20:36:38,555 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-03 20:36:38,555 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-03 20:36:38,556 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-03 20:36:38,556 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-03 20:36:38,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-03 20:36:38,556 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-03 20:36:38,556 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-03 20:36:38,557 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-03 20:36:38,557 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-03 20:36:38,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-03 20:36:38,557 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-03 20:36:38,585 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-03 20:36:38,600 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-03 20:36:38,605 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-03 20:36:38,607 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-03 20:36:38,608 INFO L275 PluginConnector]: CDTParser initialized [2019-09-03 20:36:38,608 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/insertion_sort-1.c [2019-09-03 20:36:38,681 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5bcd41cd/a35862c9b9f24417938726c7acb392fe/FLAG701fa1ea4 [2019-09-03 20:36:39,104 INFO L306 CDTParser]: Found 1 translation units. [2019-09-03 20:36:39,104 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/insertion_sort-1.c [2019-09-03 20:36:39,110 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5bcd41cd/a35862c9b9f24417938726c7acb392fe/FLAG701fa1ea4 [2019-09-03 20:36:39,499 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5bcd41cd/a35862c9b9f24417938726c7acb392fe [2019-09-03 20:36:39,507 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-03 20:36:39,509 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-03 20:36:39,510 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-03 20:36:39,510 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-03 20:36:39,513 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-03 20:36:39,514 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 08:36:39" (1/1) ... [2019-09-03 20:36:39,517 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2921fa5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:36:39, skipping insertion in model container [2019-09-03 20:36:39,518 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 08:36:39" (1/1) ... [2019-09-03 20:36:39,525 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-03 20:36:39,541 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-03 20:36:39,710 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 20:36:39,714 INFO L188 MainTranslator]: Completed pre-run [2019-09-03 20:36:39,738 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 20:36:39,756 INFO L192 MainTranslator]: Completed translation [2019-09-03 20:36:39,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:36:39 WrapperNode [2019-09-03 20:36:39,757 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-03 20:36:39,758 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-03 20:36:39,758 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-03 20:36:39,758 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-03 20:36:39,852 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:36:39" (1/1) ... [2019-09-03 20:36:39,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:36:39" (1/1) ... [2019-09-03 20:36:39,859 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:36:39" (1/1) ... [2019-09-03 20:36:39,859 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:36:39" (1/1) ... [2019-09-03 20:36:39,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:36:39" (1/1) ... [2019-09-03 20:36:39,871 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:36:39" (1/1) ... [2019-09-03 20:36:39,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:36:39" (1/1) ... [2019-09-03 20:36:39,874 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-03 20:36:39,874 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-03 20:36:39,874 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-03 20:36:39,875 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-03 20:36:39,876 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:36:39" (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 [2019-09-03 20:36:39,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-03 20:36:39,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-03 20:36:39,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-03 20:36:39,941 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-03 20:36:39,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-03 20:36:39,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-03 20:36:39,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-09-03 20:36:39,942 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-03 20:36:39,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-03 20:36:39,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-03 20:36:39,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-03 20:36:39,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-03 20:36:39,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-03 20:36:39,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-03 20:36:40,158 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-03 20:36:40,158 INFO L283 CfgBuilder]: Removed 3 assume(true) statements. [2019-09-03 20:36:40,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 08:36:40 BoogieIcfgContainer [2019-09-03 20:36:40,160 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-03 20:36:40,161 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-03 20:36:40,161 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-03 20:36:40,164 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-03 20:36:40,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.09 08:36:39" (1/3) ... [2019-09-03 20:36:40,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d202d00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 08:36:40, skipping insertion in model container [2019-09-03 20:36:40,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:36:39" (2/3) ... [2019-09-03 20:36:40,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d202d00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 08:36:40, skipping insertion in model container [2019-09-03 20:36:40,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 08:36:40" (3/3) ... [2019-09-03 20:36:40,167 INFO L109 eAbstractionObserver]: Analyzing ICFG insertion_sort-1.c [2019-09-03 20:36:40,180 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-03 20:36:40,192 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-03 20:36:40,230 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-03 20:36:40,265 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-03 20:36:40,266 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-03 20:36:40,266 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-03 20:36:40,266 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-03 20:36:40,266 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-03 20:36:40,266 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-03 20:36:40,266 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-03 20:36:40,267 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-03 20:36:40,283 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-09-03 20:36:40,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-03 20:36:40,293 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:36:40,294 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:36:40,296 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:36:40,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:36:40,302 INFO L82 PathProgramCache]: Analyzing trace with hash 342854797, now seen corresponding path program 1 times [2019-09-03 20:36:40,304 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 20:36:40,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:36:40,349 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:36:40,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:36:40,349 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 20:36:40,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:36:40,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 20:36:40,633 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 20:36:40,633 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-03 20:36:40,633 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-03 20:36:40,638 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-03 20:36:40,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-03 20:36:40,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-09-03 20:36:40,651 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 5 states. [2019-09-03 20:36:40,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:36:40,741 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2019-09-03 20:36:40,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-03 20:36:40,743 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-09-03 20:36:40,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:36:40,753 INFO L225 Difference]: With dead ends: 43 [2019-09-03 20:36:40,753 INFO L226 Difference]: Without dead ends: 33 [2019-09-03 20:36:40,755 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-09-03 20:36:40,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-09-03 20:36:40,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 26. [2019-09-03 20:36:40,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-09-03 20:36:40,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2019-09-03 20:36:40,801 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 13 [2019-09-03 20:36:40,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:36:40,803 INFO L475 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2019-09-03 20:36:40,803 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-03 20:36:40,803 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2019-09-03 20:36:40,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-09-03 20:36:40,804 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:36:40,804 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:36:40,805 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:36:40,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:36:40,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1336061280, now seen corresponding path program 1 times [2019-09-03 20:36:40,807 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 20:36:40,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:36:40,809 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:36:40,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:36:40,809 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 20:36:40,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:36:41,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 20:36:41,376 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-03 20:36:41,378 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-03 20:36:41,379 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 20 with the following transitions: [2019-09-03 20:36:41,381 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [11], [13], [18], [21], [27], [40], [42], [46], [54], [64], [67], [69], [75], [76], [77], [79] [2019-09-03 20:36:41,435 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-03 20:36:41,435 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-03 20:36:41,550 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-03 20:36:41,552 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 16 root evaluator evaluations with a maximum evaluation depth of 0. Performed 16 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 26 variables. [2019-09-03 20:36:41,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:36:41,555 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-03 20:36:41,590 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-09-03 20:36:41,590 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-03 20:36:41,592 INFO L420 sIntCurrentIteration]: We unified 18 AI predicates to 18 [2019-09-03 20:36:41,592 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-03 20:36:41,593 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-03 20:36:41,593 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 12 [2019-09-03 20:36:41,593 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-03 20:36:41,595 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-03 20:36:41,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-03 20:36:41,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-03 20:36:41,596 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 2 states. [2019-09-03 20:36:41,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:36:41,597 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-09-03 20:36:41,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-03 20:36:41,597 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2019-09-03 20:36:41,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:36:41,598 INFO L225 Difference]: With dead ends: 6 [2019-09-03 20:36:41,598 INFO L226 Difference]: Without dead ends: 0 [2019-09-03 20:36:41,599 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-03 20:36:41,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-03 20:36:41,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-03 20:36:41,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-03 20:36:41,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-03 20:36:41,600 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2019-09-03 20:36:41,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:36:41,600 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-03 20:36:41,600 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-03 20:36:41,600 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-03 20:36:41,601 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-03 20:36:41,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.09 08:36:41 BoogieIcfgContainer [2019-09-03 20:36:41,606 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-03 20:36:41,609 INFO L168 Benchmark]: Toolchain (without parser) took 2099.08 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 85.9 MB in the beginning and 79.8 MB in the end (delta: 6.2 MB). Peak memory consumption was 69.1 MB. Max. memory is 7.1 GB. [2019-09-03 20:36:41,610 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 137.4 MB. Free memory was 104.4 MB in the beginning and 104.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-03 20:36:41,611 INFO L168 Benchmark]: CACSL2BoogieTranslator took 247.47 ms. Allocated memory is still 137.4 MB. Free memory was 85.7 MB in the beginning and 75.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2019-09-03 20:36:41,612 INFO L168 Benchmark]: Boogie Preprocessor took 116.35 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 75.6 MB in the beginning and 177.4 MB in the end (delta: -101.7 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. [2019-09-03 20:36:41,613 INFO L168 Benchmark]: RCFGBuilder took 285.45 ms. Allocated memory is still 200.3 MB. Free memory was 177.4 MB in the beginning and 161.7 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 7.1 GB. [2019-09-03 20:36:41,614 INFO L168 Benchmark]: TraceAbstraction took 1445.31 ms. Allocated memory is still 200.3 MB. Free memory was 161.7 MB in the beginning and 79.8 MB in the end (delta: 82.0 MB). Peak memory consumption was 82.0 MB. Max. memory is 7.1 GB. [2019-09-03 20:36:41,618 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 137.4 MB. Free memory was 104.4 MB in the beginning and 104.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 247.47 ms. Allocated memory is still 137.4 MB. Free memory was 85.7 MB in the beginning and 75.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 116.35 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 75.6 MB in the beginning and 177.4 MB in the end (delta: -101.7 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 285.45 ms. Allocated memory is still 200.3 MB. Free memory was 177.4 MB in the beginning and 161.7 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1445.31 ms. Allocated memory is still 200.3 MB. Free memory was 161.7 MB in the beginning and 79.8 MB in the end (delta: 82.0 MB). Peak memory consumption was 82.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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, 30 locations, 1 error locations. SAFE Result, 1.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 35 SDtfs, 22 SDslu, 58 SDs, 0 SdLazy, 14 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred 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, 0.9027777777777778 AbsIntWeakeningRatio, 1.1666666666666667 AbsIntAvgWeakeningVarsNumRemoved, 0.3333333333333333 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 4410 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 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...