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-crafted/simple_array_index_value_2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 02:03:44,845 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 02:03:44,847 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 02:03:44,858 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-10 02:03:44,892 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 [2019-09-10 02:03:44,906 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 02:03:44,906 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 02:03:44,907 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 02:03:44,907 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 02:03:44,908 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 02:03:44,908 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 02:03:44,908 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 02:03:44,908 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 02:03:44,908 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 02:03:44,909 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 02:03:44,909 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 02:03:44,909 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 02:03:44,910 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 02:03:44,910 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 02:03:44,910 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 02:03:44,910 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 02:03:44,910 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 02:03:44,911 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 02:03:44,911 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 02:03:44,911 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 02:03:44,911 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 02:03:44,911 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 02:03:44,911 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 02:03:44,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 02:03:44,912 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 02:03:44,912 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 02:03:44,912 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 02:03:44,912 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 02:03:44,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 02:03:44,913 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 02:03:44,940 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 02:03:44,951 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 02:03:44,955 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 02:03:44,956 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 02:03:44,956 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 02:03:44,957 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_2.i [2019-09-10 02:03:45,013 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2e7fa3bd/a77abcde282f4afa8c64355b9bae8209/FLAG85c16ac52 [2019-09-10 02:03:45,424 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 02:03:45,424 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_2.i [2019-09-10 02:03:45,429 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2e7fa3bd/a77abcde282f4afa8c64355b9bae8209/FLAG85c16ac52 [2019-09-10 02:03:45,840 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2e7fa3bd/a77abcde282f4afa8c64355b9bae8209 [2019-09-10 02:03:45,850 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 02:03:45,851 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 02:03:45,852 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 02:03:45,853 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 02:03:45,856 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 02:03:45,857 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 02:03:45" (1/1) ... [2019-09-10 02:03:45,860 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b33bf0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:03:45, skipping insertion in model container [2019-09-10 02:03:45,860 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 02:03:45" (1/1) ... [2019-09-10 02:03:45,867 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 02:03:45,886 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 02:03:46,082 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 02:03:46,086 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 02:03:46,117 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 02:03:46,138 INFO L192 MainTranslator]: Completed translation [2019-09-10 02:03:46,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:03:46 WrapperNode [2019-09-10 02:03:46,139 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 02:03:46,139 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 02:03:46,139 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 02:03:46,139 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 02:03:46,240 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:03:46" (1/1) ... [2019-09-10 02:03:46,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:03:46" (1/1) ... [2019-09-10 02:03:46,248 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:03:46" (1/1) ... [2019-09-10 02:03:46,249 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:03:46" (1/1) ... [2019-09-10 02:03:46,254 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:03:46" (1/1) ... [2019-09-10 02:03:46,258 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:03:46" (1/1) ... [2019-09-10 02:03:46,259 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:03:46" (1/1) ... [2019-09-10 02:03:46,261 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 02:03:46,261 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 02:03:46,262 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 02:03:46,262 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 02:03:46,262 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:03:46" (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 [2019-09-10 02:03:46,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 02:03:46,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 02:03:46,320 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-10 02:03:46,320 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 02:03:46,321 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 02:03:46,321 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-10 02:03:46,321 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-10 02:03:46,321 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-09-10 02:03:46,321 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 02:03:46,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-10 02:03:46,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-10 02:03:46,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-10 02:03:46,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-10 02:03:46,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 02:03:46,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 02:03:46,540 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 02:03:46,540 INFO L283 CfgBuilder]: Removed 2 assume(true) statements. [2019-09-10 02:03:46,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 02:03:46 BoogieIcfgContainer [2019-09-10 02:03:46,542 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 02:03:46,542 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 02:03:46,543 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 02:03:46,545 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 02:03:46,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 02:03:45" (1/3) ... [2019-09-10 02:03:46,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2275945d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 02:03:46, skipping insertion in model container [2019-09-10 02:03:46,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:03:46" (2/3) ... [2019-09-10 02:03:46,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2275945d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 02:03:46, skipping insertion in model container [2019-09-10 02:03:46,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 02:03:46" (3/3) ... [2019-09-10 02:03:46,548 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_2.i [2019-09-10 02:03:46,559 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 02:03:46,567 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 02:03:46,585 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 02:03:46,623 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 02:03:46,624 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 02:03:46,624 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 02:03:46,624 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 02:03:46,624 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 02:03:46,624 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 02:03:46,624 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 02:03:46,625 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 02:03:46,640 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-09-10 02:03:46,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-10 02:03:46,650 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:03:46,651 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:03:46,653 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:03:46,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:03:46,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1821336840, now seen corresponding path program 1 times [2019-09-10 02:03:46,662 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:03:46,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:03:46,707 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:03:46,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:03:46,708 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:03:46,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:03:46,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:03:46,788 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:03:46,788 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-10 02:03:46,788 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:03:46,791 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 02:03:46,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 02:03:46,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 02:03:46,804 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2019-09-10 02:03:46,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:03:46,817 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2019-09-10 02:03:46,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 02:03:46,818 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-09-10 02:03:46,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:03:46,827 INFO L225 Difference]: With dead ends: 24 [2019-09-10 02:03:46,827 INFO L226 Difference]: Without dead ends: 19 [2019-09-10 02:03:46,829 INFO L628 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 [2019-09-10 02:03:46,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-09-10 02:03:46,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-09-10 02:03:46,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-09-10 02:03:46,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2019-09-10 02:03:46,863 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 13 [2019-09-10 02:03:46,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:03:46,864 INFO L475 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2019-09-10 02:03:46,864 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 02:03:46,864 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2019-09-10 02:03:46,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-10 02:03:46,865 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:03:46,865 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:03:46,865 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:03:46,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:03:46,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1443575666, now seen corresponding path program 1 times [2019-09-10 02:03:46,866 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:03:46,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:03:46,867 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:03:46,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:03:46,868 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:03:46,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:03:46,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:03:46,957 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:03:46,957 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 02:03:46,957 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:03:46,958 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 02:03:46,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 02:03:46,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 02:03:46,959 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 3 states. [2019-09-10 02:03:47,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:03:47,038 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2019-09-10 02:03:47,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 02:03:47,039 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-09-10 02:03:47,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:03:47,042 INFO L225 Difference]: With dead ends: 25 [2019-09-10 02:03:47,042 INFO L226 Difference]: Without dead ends: 25 [2019-09-10 02:03:47,043 INFO L628 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 [2019-09-10 02:03:47,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-09-10 02:03:47,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 20. [2019-09-10 02:03:47,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-09-10 02:03:47,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2019-09-10 02:03:47,061 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 13 [2019-09-10 02:03:47,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:03:47,062 INFO L475 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2019-09-10 02:03:47,062 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 02:03:47,062 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2019-09-10 02:03:47,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-09-10 02:03:47,064 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:03:47,065 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:03:47,066 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:03:47,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:03:47,067 INFO L82 PathProgramCache]: Analyzing trace with hash 31729808, now seen corresponding path program 1 times [2019-09-10 02:03:47,067 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:03:47,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:03:47,068 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:03:47,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:03:47,069 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:03:47,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:03:47,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:03:47,231 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 02:03:47,231 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 02:03:47,234 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 16 with the following transitions: [2019-09-10 02:03:47,236 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [11], [13], [15], [19], [27], [37], [40], [42], [48], [49], [50], [52] [2019-09-10 02:03:47,284 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 02:03:47,284 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 02:03:47,341 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-10 02:03:47,342 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 19 variables. [2019-09-10 02:03:47,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:03:47,345 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-10 02:03:47,378 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-09-10 02:03:47,378 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-10 02:03:47,380 INFO L420 sIntCurrentIteration]: We unified 14 AI predicates to 14 [2019-09-10 02:03:47,380 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-10 02:03:47,381 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-10 02:03:47,381 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2019-09-10 02:03:47,381 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:03:47,382 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 02:03:47,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 02:03:47,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 02:03:47,383 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 2 states. [2019-09-10 02:03:47,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:03:47,384 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-09-10 02:03:47,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 02:03:47,384 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2019-09-10 02:03:47,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:03:47,384 INFO L225 Difference]: With dead ends: 6 [2019-09-10 02:03:47,385 INFO L226 Difference]: Without dead ends: 0 [2019-09-10 02:03:47,385 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 02:03:47,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-10 02:03:47,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-10 02:03:47,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-10 02:03:47,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-10 02:03:47,386 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2019-09-10 02:03:47,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:03:47,386 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-10 02:03:47,387 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 02:03:47,387 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-10 02:03:47,387 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-10 02:03:47,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 02:03:47 BoogieIcfgContainer [2019-09-10 02:03:47,391 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 02:03:47,394 INFO L168 Benchmark]: Toolchain (without parser) took 1541.88 ms. Allocated memory was 135.3 MB in the beginning and 202.4 MB in the end (delta: 67.1 MB). Free memory was 90.3 MB in the beginning and 124.4 MB in the end (delta: -34.1 MB). Peak memory consumption was 33.0 MB. Max. memory is 7.1 GB. [2019-09-10 02:03:47,395 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 135.3 MB. Free memory was 108.5 MB in the beginning and 108.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-10 02:03:47,396 INFO L168 Benchmark]: CACSL2BoogieTranslator took 286.45 ms. Allocated memory is still 135.3 MB. Free memory was 90.1 MB in the beginning and 80.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2019-09-10 02:03:47,397 INFO L168 Benchmark]: Boogie Preprocessor took 122.01 ms. Allocated memory was 135.3 MB in the beginning and 202.4 MB in the end (delta: 67.1 MB). Free memory was 80.4 MB in the beginning and 178.3 MB in the end (delta: -97.9 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. [2019-09-10 02:03:47,398 INFO L168 Benchmark]: RCFGBuilder took 280.23 ms. Allocated memory is still 202.4 MB. Free memory was 178.3 MB in the beginning and 165.4 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2019-09-10 02:03:47,399 INFO L168 Benchmark]: TraceAbstraction took 849.07 ms. Allocated memory is still 202.4 MB. Free memory was 164.8 MB in the beginning and 124.4 MB in the end (delta: 40.4 MB). Peak memory consumption was 40.4 MB. Max. memory is 7.1 GB. [2019-09-10 02:03:47,403 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 135.3 MB. Free memory was 108.5 MB in the beginning and 108.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 286.45 ms. Allocated memory is still 135.3 MB. Free memory was 90.1 MB in the beginning and 80.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.01 ms. Allocated memory was 135.3 MB in the beginning and 202.4 MB in the end (delta: 67.1 MB). Free memory was 80.4 MB in the beginning and 178.3 MB in the end (delta: -97.9 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 280.23 ms. Allocated memory is still 202.4 MB. Free memory was 178.3 MB in the beginning and 165.4 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 849.07 ms. Allocated memory is still 202.4 MB. Free memory was 164.8 MB in the beginning and 124.4 MB in the end (delta: 40.4 MB). Peak memory consumption was 40.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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, 24 locations, 1 error locations. SAFE Result, 0.7s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 47 SDtfs, 3 SDslu, 13 SDs, 0 SdLazy, 9 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred 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, 0.9464285714285714 AbsIntWeakeningRatio, 0.7857142857142857 AbsIntAvgWeakeningVarsNumRemoved, 0.42857142857142855 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 704 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/1 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...