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_allDiff2_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 16:29:48,673 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 16:29:48,675 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 16:29:48,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-02 16:29:48,697 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 16:29:48,698 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 16:29:48,699 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 16:29:48,700 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 16:29:48,701 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 16:29:48,702 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 16:29:48,704 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 16:29:48,706 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 16:29:48,707 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 16:29:48,708 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 16:29:48,709 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 16:29:48,710 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 16:29:48,713 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-02 16:29:48,716 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 16:29:48,718 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 16:29:48,718 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 16:29:48,719 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 16:29:48,720 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 16:29:48,721 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 16:29:48,724 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 16:29:48,724 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 16:29:48,724 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 16:29:48,725 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 16:29:48,726 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 16:29:48,729 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 16:29:48,755 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 16:29:48,756 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 16:29:48,756 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 16:29:48,760 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 16:29:48,761 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 16:29:48,761 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 16:29:48,761 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 16:29:48,762 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 16:29:48,762 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 16:29:48,762 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 16:29:48,766 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 16:29:48,766 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 16:29:48,766 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 16:29:48,766 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 16:29:48,766 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 16:29:48,767 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 16:29:48,767 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 16:29:48,768 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 16:29:48,768 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 16:29:48,768 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 16:29:48,769 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 16:29:48,769 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 16:29:48,769 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 16:29:48,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 16:29:48,770 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 16:29:48,770 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 16:29:48,770 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 16:29:48,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 16:29:48,771 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 16:29:48,771 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 16:29:48,802 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 16:29:48,820 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 16:29:48,827 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 16:29:48,829 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 16:29:48,829 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 16:29:48,830 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_allDiff2_ground.i [2019-10-02 16:29:48,898 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de5efcb6b/32ed933a241d4e1f833d7bc27ea8252a/FLAG5eaacc633 [2019-10-02 16:29:49,311 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 16:29:49,312 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_allDiff2_ground.i [2019-10-02 16:29:49,319 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de5efcb6b/32ed933a241d4e1f833d7bc27ea8252a/FLAG5eaacc633 [2019-10-02 16:29:49,734 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de5efcb6b/32ed933a241d4e1f833d7bc27ea8252a [2019-10-02 16:29:49,743 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 16:29:49,744 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 16:29:49,745 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 16:29:49,745 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 16:29:49,749 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 16:29:49,750 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:29:49" (1/1) ... [2019-10-02 16:29:49,752 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5370fc2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:49, skipping insertion in model container [2019-10-02 16:29:49,753 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:29:49" (1/1) ... [2019-10-02 16:29:49,760 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 16:29:49,782 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 16:29:49,999 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:29:50,004 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 16:29:50,044 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:29:50,196 INFO L192 MainTranslator]: Completed translation [2019-10-02 16:29:50,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:50 WrapperNode [2019-10-02 16:29:50,197 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 16:29:50,198 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 16:29:50,198 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 16:29:50,199 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 16:29:50,213 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:50" (1/1) ... [2019-10-02 16:29:50,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:50" (1/1) ... [2019-10-02 16:29:50,225 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:50" (1/1) ... [2019-10-02 16:29:50,225 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:50" (1/1) ... [2019-10-02 16:29:50,245 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:50" (1/1) ... [2019-10-02 16:29:50,255 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:50" (1/1) ... [2019-10-02 16:29:50,261 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:50" (1/1) ... [2019-10-02 16:29:50,263 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 16:29:50,265 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 16:29:50,265 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 16:29:50,265 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 16:29:50,266 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:50" (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 16:29:50,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 16:29:50,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 16:29:50,319 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-02 16:29:50,319 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 16:29:50,320 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 16:29:50,320 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-02 16:29:50,320 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 16:29:50,320 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 16:29:50,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-02 16:29:50,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-02 16:29:50,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-02 16:29:50,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-02 16:29:50,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 16:29:50,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 16:29:50,616 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 16:29:50,617 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-02 16:29:50,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:29:50 BoogieIcfgContainer [2019-10-02 16:29:50,618 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 16:29:50,619 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 16:29:50,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 16:29:50,622 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 16:29:50,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 04:29:49" (1/3) ... [2019-10-02 16:29:50,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36095c60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:29:50, skipping insertion in model container [2019-10-02 16:29:50,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:50" (2/3) ... [2019-10-02 16:29:50,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36095c60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:29:50, skipping insertion in model container [2019-10-02 16:29:50,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:29:50" (3/3) ... [2019-10-02 16:29:50,626 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_allDiff2_ground.i [2019-10-02 16:29:50,637 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 16:29:50,645 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 16:29:50,663 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 16:29:50,696 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 16:29:50,696 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 16:29:50,696 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 16:29:50,696 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 16:29:50,697 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 16:29:50,697 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 16:29:50,697 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 16:29:50,697 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 16:29:50,711 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-10-02 16:29:50,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-02 16:29:50,720 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:50,721 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:29:50,723 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:50,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:50,729 INFO L82 PathProgramCache]: Analyzing trace with hash -526773211, now seen corresponding path program 1 times [2019-10-02 16:29:50,731 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:50,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:50,780 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:50,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:50,780 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:50,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:50,857 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 16:29:50,859 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:29:50,859 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-02 16:29:50,859 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:50,864 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 16:29:50,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 16:29:50,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:29:50,879 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-10-02 16:29:50,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:50,898 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2019-10-02 16:29:50,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 16:29:50,899 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-10-02 16:29:50,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:50,909 INFO L225 Difference]: With dead ends: 32 [2019-10-02 16:29:50,909 INFO L226 Difference]: Without dead ends: 27 [2019-10-02 16:29:50,911 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 16:29:50,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-10-02 16:29:50,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-10-02 16:29:50,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-10-02 16:29:50,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2019-10-02 16:29:50,948 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 16 [2019-10-02 16:29:50,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:50,949 INFO L475 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2019-10-02 16:29:50,949 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 16:29:50,949 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2019-10-02 16:29:50,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-02 16:29:50,950 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:50,951 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:29:50,951 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:50,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:50,952 INFO L82 PathProgramCache]: Analyzing trace with hash -777624222, now seen corresponding path program 1 times [2019-10-02 16:29:50,952 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:50,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:50,954 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:50,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:50,955 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:50,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:51,035 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 16:29:51,036 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:29:51,036 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 16:29:51,036 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:51,037 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 16:29:51,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 16:29:51,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:29:51,038 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand 3 states. [2019-10-02 16:29:51,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:51,071 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2019-10-02 16:29:51,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:29:51,072 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-10-02 16:29:51,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:51,073 INFO L225 Difference]: With dead ends: 29 [2019-10-02 16:29:51,073 INFO L226 Difference]: Without dead ends: 29 [2019-10-02 16:29:51,075 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 16:29:51,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-10-02 16:29:51,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2019-10-02 16:29:51,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-10-02 16:29:51,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2019-10-02 16:29:51,080 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 16 [2019-10-02 16:29:51,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:51,081 INFO L475 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2019-10-02 16:29:51,081 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 16:29:51,081 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2019-10-02 16:29:51,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-02 16:29:51,082 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:51,082 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:29:51,082 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:51,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:51,083 INFO L82 PathProgramCache]: Analyzing trace with hash 2101592964, now seen corresponding path program 1 times [2019-10-02 16:29:51,083 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:51,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:51,085 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:51,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:51,086 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:51,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:51,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-02 16:29:51,159 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:29:51,159 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 16:29:51,161 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:51,162 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 16:29:51,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 16:29:51,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-02 16:29:51,163 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 4 states. [2019-10-02 16:29:51,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:51,230 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2019-10-02 16:29:51,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 16:29:51,232 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2019-10-02 16:29:51,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:51,236 INFO L225 Difference]: With dead ends: 34 [2019-10-02 16:29:51,236 INFO L226 Difference]: Without dead ends: 33 [2019-10-02 16:29:51,237 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-02 16:29:51,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-10-02 16:29:51,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2019-10-02 16:29:51,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-02 16:29:51,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2019-10-02 16:29:51,244 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 18 [2019-10-02 16:29:51,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:51,245 INFO L475 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2019-10-02 16:29:51,245 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 16:29:51,245 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2019-10-02 16:29:51,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-02 16:29:51,246 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:51,246 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] [2019-10-02 16:29:51,247 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:51,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:51,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1818591568, now seen corresponding path program 1 times [2019-10-02 16:29:51,248 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:51,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:51,249 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:51,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:51,250 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:51,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:51,345 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-02 16:29:51,345 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:29:51,346 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 16:29:51,346 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:51,346 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 16:29:51,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 16:29:51,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-02 16:29:51,348 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 5 states. [2019-10-02 16:29:51,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:51,513 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2019-10-02 16:29:51,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-02 16:29:51,515 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2019-10-02 16:29:51,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:51,516 INFO L225 Difference]: With dead ends: 42 [2019-10-02 16:29:51,516 INFO L226 Difference]: Without dead ends: 42 [2019-10-02 16:29:51,517 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-02 16:29:51,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-10-02 16:29:51,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 33. [2019-10-02 16:29:51,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-10-02 16:29:51,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2019-10-02 16:29:51,529 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 21 [2019-10-02 16:29:51,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:51,530 INFO L475 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2019-10-02 16:29:51,530 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 16:29:51,530 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2019-10-02 16:29:51,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-10-02 16:29:51,531 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:51,531 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 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 16:29:51,532 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:51,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:51,533 INFO L82 PathProgramCache]: Analyzing trace with hash 334453631, now seen corresponding path program 1 times [2019-10-02 16:29:51,533 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:51,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:51,537 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:51,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:51,537 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:51,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:51,675 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-02 16:29:51,675 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 16:29:51,676 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 16:29:51,676 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 27 with the following transitions: [2019-10-02 16:29:51,678 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [11], [13], [15], [19], [25], [27], [33], [35], [38], [42], [46], [52], [60], [68], [85], [88], [90], [96], [97], [98], [100] [2019-10-02 16:29:51,709 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 16:29:51,709 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-02 16:29:51,775 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-02 16:29:51,777 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 27 variables. [2019-10-02 16:29:51,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:51,781 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-02 16:29:51,818 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-02 16:29:51,818 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-02 16:29:51,820 INFO L420 sIntCurrentIteration]: We unified 25 AI predicates to 25 [2019-10-02 16:29:51,820 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-02 16:29:51,821 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 16:29:51,821 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 7 [2019-10-02 16:29:51,821 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:51,822 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 16:29:51,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 16:29:51,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:29:51,823 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 2 states. [2019-10-02 16:29:51,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:51,824 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-10-02 16:29:51,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 16:29:51,824 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2019-10-02 16:29:51,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:51,825 INFO L225 Difference]: With dead ends: 6 [2019-10-02 16:29:51,825 INFO L226 Difference]: Without dead ends: 0 [2019-10-02 16:29:51,825 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 25 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 16:29:51,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-02 16:29:51,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-02 16:29:51,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-02 16:29:51,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-02 16:29:51,826 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2019-10-02 16:29:51,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:51,827 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-02 16:29:51,827 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 16:29:51,827 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-02 16:29:51,827 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-02 16:29:51,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 04:29:51 BoogieIcfgContainer [2019-10-02 16:29:51,833 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 16:29:51,835 INFO L168 Benchmark]: Toolchain (without parser) took 2090.36 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 86.8 MB in the beginning and 88.0 MB in the end (delta: -1.2 MB). Peak memory consumption was 60.7 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:51,837 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 105.4 MB in the beginning and 105.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-02 16:29:51,838 INFO L168 Benchmark]: CACSL2BoogieTranslator took 453.04 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 86.6 MB in the beginning and 179.7 MB in the end (delta: -93.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:51,839 INFO L168 Benchmark]: Boogie Preprocessor took 64.57 ms. Allocated memory is still 201.3 MB. Free memory was 179.7 MB in the beginning and 177.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:51,839 INFO L168 Benchmark]: RCFGBuilder took 353.54 ms. Allocated memory is still 201.3 MB. Free memory was 177.4 MB in the beginning and 161.1 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:51,840 INFO L168 Benchmark]: TraceAbstraction took 1213.53 ms. Allocated memory is still 201.3 MB. Free memory was 160.5 MB in the beginning and 88.0 MB in the end (delta: 72.5 MB). Peak memory consumption was 72.5 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:51,844 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 105.4 MB in the beginning and 105.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 453.04 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 86.6 MB in the beginning and 179.7 MB in the end (delta: -93.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 64.57 ms. Allocated memory is still 201.3 MB. Free memory was 179.7 MB in the beginning and 177.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 353.54 ms. Allocated memory is still 201.3 MB. Free memory was 177.4 MB in the beginning and 161.1 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1213.53 ms. Allocated memory is still 201.3 MB. Free memory was 160.5 MB in the beginning and 88.0 MB in the end (delta: 72.5 MB). Peak memory consumption was 72.5 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, 32 locations, 1 error locations. SAFE Result, 1.1s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 129 SDtfs, 18 SDslu, 128 SDs, 0 SdLazy, 84 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=4, 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, 0.96 AbsIntWeakeningRatio, 0.88 AbsIntAvgWeakeningVarsNumRemoved, 0.24 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 14 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 3072 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 8/9 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...