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/loop-invariants/const.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-03 02:32:18,664 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-03 02:32:18,666 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-03 02:32:18,682 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-03 02:32:18,683 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-03 02:32:18,684 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-03 02:32:18,685 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-03 02:32:18,687 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-03 02:32:18,688 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-03 02:32:18,689 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-03 02:32:18,690 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-03 02:32:18,691 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2019-10-03 02:32:18,715 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-03 02:32:18,716 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-03 02:32:18,717 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-03 02:32:18,718 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 [2019-10-03 02:32:18,733 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-03 02:32:18,733 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-03 02:32:18,734 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-03 02:32:18,734 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-03 02:32:18,735 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-03 02:32:18,735 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-03 02:32:18,736 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-03 02:32:18,737 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-03 02:32:18,737 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-03 02:32:18,737 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-03 02:32:18,738 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-03 02:32:18,738 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-03 02:32:18,738 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-03 02:32:18,738 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-03 02:32:18,738 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-03 02:32:18,739 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-03 02:32:18,739 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-03 02:32:18,739 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-03 02:32:18,739 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-03 02:32:18,739 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-03 02:32:18,740 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-03 02:32:18,740 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-03 02:32:18,740 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-03 02:32:18,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-03 02:32:18,742 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-03 02:32:18,742 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-03 02:32:18,742 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-03 02:32:18,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-03 02:32:18,743 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-03 02:32:18,743 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-03 02:32:18,791 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-03 02:32:18,804 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-03 02:32:18,807 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-03 02:32:18,809 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-03 02:32:18,809 INFO L275 PluginConnector]: CDTParser initialized [2019-10-03 02:32:18,810 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/const.c [2019-10-03 02:32:18,872 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/932502f71/1613db2d7b8547f4b2673f075ea52e2d/FLAG90316e7a6 [2019-10-03 02:32:19,311 INFO L306 CDTParser]: Found 1 translation units. [2019-10-03 02:32:19,311 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/const.c [2019-10-03 02:32:19,317 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/932502f71/1613db2d7b8547f4b2673f075ea52e2d/FLAG90316e7a6 [2019-10-03 02:32:19,752 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/932502f71/1613db2d7b8547f4b2673f075ea52e2d [2019-10-03 02:32:19,761 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-03 02:32:19,763 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-03 02:32:19,764 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-03 02:32:19,764 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-03 02:32:19,767 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-03 02:32:19,768 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 02:32:19" (1/1) ... [2019-10-03 02:32:19,771 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@599a6431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:32:19, skipping insertion in model container [2019-10-03 02:32:19,771 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 02:32:19" (1/1) ... [2019-10-03 02:32:19,781 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-03 02:32:19,796 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-03 02:32:19,939 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 02:32:19,943 INFO L188 MainTranslator]: Completed pre-run [2019-10-03 02:32:19,959 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 02:32:19,973 INFO L192 MainTranslator]: Completed translation [2019-10-03 02:32:19,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:32:19 WrapperNode [2019-10-03 02:32:19,974 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-03 02:32:19,975 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-03 02:32:19,975 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-03 02:32:19,975 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-03 02:32:20,074 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:32:19" (1/1) ... [2019-10-03 02:32:20,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:32:19" (1/1) ... [2019-10-03 02:32:20,080 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:32:19" (1/1) ... [2019-10-03 02:32:20,080 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:32:19" (1/1) ... [2019-10-03 02:32:20,084 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:32:19" (1/1) ... [2019-10-03 02:32:20,090 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:32:19" (1/1) ... [2019-10-03 02:32:20,091 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:32:19" (1/1) ... [2019-10-03 02:32:20,092 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-03 02:32:20,093 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-03 02:32:20,093 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-03 02:32:20,093 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-03 02:32:20,094 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:32:19" (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 [2019-10-03 02:32:20,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-03 02:32:20,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-03 02:32:20,141 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-03 02:32:20,142 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-03 02:32:20,142 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-03 02:32:20,142 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-10-03 02:32:20,142 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-03 02:32:20,142 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-03 02:32:20,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-03 02:32:20,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-03 02:32:20,302 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-03 02:32:20,303 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-03 02:32:20,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:32:20 BoogieIcfgContainer [2019-10-03 02:32:20,304 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-03 02:32:20,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-03 02:32:20,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-03 02:32:20,308 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-03 02:32:20,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.10 02:32:19" (1/3) ... [2019-10-03 02:32:20,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65729032 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:32:20, skipping insertion in model container [2019-10-03 02:32:20,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:32:19" (2/3) ... [2019-10-03 02:32:20,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65729032 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:32:20, skipping insertion in model container [2019-10-03 02:32:20,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:32:20" (3/3) ... [2019-10-03 02:32:20,312 INFO L109 eAbstractionObserver]: Analyzing ICFG const.c [2019-10-03 02:32:20,321 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-03 02:32:20,329 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-03 02:32:20,346 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-03 02:32:20,392 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-03 02:32:20,392 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-03 02:32:20,392 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-03 02:32:20,392 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-03 02:32:20,393 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-03 02:32:20,393 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-03 02:32:20,393 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-03 02:32:20,393 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-03 02:32:20,412 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-10-03 02:32:20,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-03 02:32:20,424 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:32:20,425 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:32:20,427 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:32:20,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:32:20,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1311776583, now seen corresponding path program 1 times [2019-10-03 02:32:20,437 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:32:20,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:32:20,504 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:32:20,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:32:20,504 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:32:20,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:32:20,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:32:20,707 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:32:20,707 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-03 02:32:20,707 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:32:20,711 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-03 02:32:20,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-03 02:32:20,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-03 02:32:20,724 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. [2019-10-03 02:32:20,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:32:20,746 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2019-10-03 02:32:20,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-03 02:32:20,748 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2019-10-03 02:32:20,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:32:20,757 INFO L225 Difference]: With dead ends: 20 [2019-10-03 02:32:20,757 INFO L226 Difference]: Without dead ends: 15 [2019-10-03 02:32:20,759 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 [2019-10-03 02:32:20,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-10-03 02:32:20,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-10-03 02:32:20,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-10-03 02:32:20,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2019-10-03 02:32:20,792 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2019-10-03 02:32:20,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:32:20,793 INFO L475 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2019-10-03 02:32:20,793 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-03 02:32:20,793 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2019-10-03 02:32:20,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-03 02:32:20,794 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:32:20,794 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:32:20,794 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:32:20,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:32:20,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1254518281, now seen corresponding path program 1 times [2019-10-03 02:32:20,797 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:32:20,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:32:20,800 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:32:20,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:32:20,801 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:32:20,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:32:20,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:32:20,884 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:32:20,884 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-03 02:32:20,884 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:32:20,886 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-03 02:32:20,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-03 02:32:20,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-03 02:32:20,887 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 5 states. [2019-10-03 02:32:20,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:32:20,923 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2019-10-03 02:32:20,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-03 02:32:20,924 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2019-10-03 02:32:20,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:32:20,924 INFO L225 Difference]: With dead ends: 13 [2019-10-03 02:32:20,925 INFO L226 Difference]: Without dead ends: 0 [2019-10-03 02:32:20,926 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-03 02:32:20,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-03 02:32:20,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-03 02:32:20,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-03 02:32:20,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-03 02:32:20,927 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2019-10-03 02:32:20,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:32:20,928 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-03 02:32:20,928 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-03 02:32:20,929 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-03 02:32:20,929 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-03 02:32:20,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.10 02:32:20 BoogieIcfgContainer [2019-10-03 02:32:20,935 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-03 02:32:20,938 INFO L168 Benchmark]: Toolchain (without parser) took 1173.73 ms. Allocated memory was 132.1 MB in the beginning and 199.2 MB in the end (delta: 67.1 MB). Free memory was 87.6 MB in the beginning and 133.3 MB in the end (delta: -45.6 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. [2019-10-03 02:32:20,939 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 132.1 MB. Free memory was 106.3 MB in the beginning and 106.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-03 02:32:20,940 INFO L168 Benchmark]: CACSL2BoogieTranslator took 210.70 ms. Allocated memory is still 132.1 MB. Free memory was 87.4 MB in the beginning and 78.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2019-10-03 02:32:20,941 INFO L168 Benchmark]: Boogie Preprocessor took 117.48 ms. Allocated memory was 132.1 MB in the beginning and 199.2 MB in the end (delta: 67.1 MB). Free memory was 78.3 MB in the beginning and 176.1 MB in the end (delta: -97.8 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2019-10-03 02:32:20,942 INFO L168 Benchmark]: RCFGBuilder took 211.50 ms. Allocated memory is still 199.2 MB. Free memory was 176.1 MB in the beginning and 164.6 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. [2019-10-03 02:32:20,943 INFO L168 Benchmark]: TraceAbstraction took 629.88 ms. Allocated memory is still 199.2 MB. Free memory was 164.0 MB in the beginning and 133.3 MB in the end (delta: 30.7 MB). Peak memory consumption was 30.7 MB. Max. memory is 7.1 GB. [2019-10-03 02:32:20,947 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 132.1 MB. Free memory was 106.3 MB in the beginning and 106.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 210.70 ms. Allocated memory is still 132.1 MB. Free memory was 87.4 MB in the beginning and 78.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.48 ms. Allocated memory was 132.1 MB in the beginning and 199.2 MB in the end (delta: 67.1 MB). Free memory was 78.3 MB in the beginning and 176.1 MB in the end (delta: -97.8 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 211.50 ms. Allocated memory is still 199.2 MB. Free memory was 176.1 MB in the beginning and 164.6 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 629.88 ms. Allocated memory is still 199.2 MB. Free memory was 164.0 MB in the beginning and 133.3 MB in the end (delta: 30.7 MB). Peak memory consumption was 30.7 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, 20 locations, 1 error locations. SAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 30 SDtfs, 13 SDslu, 35 SDs, 0 SdLazy, 11 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 748 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...