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_init1_ground-2.i
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This is Ultimate 0.1.24-673a906-m
[2019-10-02 16:29:59,192 INFO L177 SettingsManager]: Resetting all preferences to default values...
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[2019-10-02 16:29:59,245 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2019-10-02 16:29:59,246 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
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[2019-10-02 16:29:59,252 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
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[2019-10-02 16:29:59,253 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
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[2019-10-02 16:29:59,255 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2019-10-02 16:29:59,255 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 16:29:59,280 INFO L113 SettingsManager]: Loading preferences was successful
[2019-10-02 16:29:59,280 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2019-10-02 16:29:59,280 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2019-10-02 16:29:59,280 INFO L138 SettingsManager]: * Log level for plugins=info
[2019-10-02 16:29:59,281 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2019-10-02 16:29:59,281 INFO L138 SettingsManager]: * User list type=DISABLED
[2019-10-02 16:29:59,281 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false
[2019-10-02 16:29:59,282 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false
[2019-10-02 16:29:59,282 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2019-10-02 16:29:59,282 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain
[2019-10-02 16:29:59,283 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-10-02 16:29:59,283 INFO L138 SettingsManager]: * sizeof long=4
[2019-10-02 16:29:59,283 INFO L138 SettingsManager]: * sizeof POINTER=4
[2019-10-02 16:29:59,283 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2019-10-02 16:29:59,283 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2019-10-02 16:29:59,284 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-10-02 16:29:59,284 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2019-10-02 16:29:59,284 INFO L138 SettingsManager]: * sizeof long double=12
[2019-10-02 16:29:59,284 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2019-10-02 16:29:59,284 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2019-10-02 16:29:59,285 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-10-02 16:29:59,285 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true
[2019-10-02 16:29:59,285 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2019-10-02 16:29:59,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-02 16:29:59,286 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-10-02 16:29:59,286 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2019-10-02 16:29:59,286 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN
[2019-10-02 16:29:59,286 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-10-02 16:29:59,286 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2019-10-02 16:29:59,287 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES
[2019-10-02 16:29:59,319 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp
[2019-10-02 16:29:59,335 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-10-02 16:29:59,339 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-10-02 16:29:59,340 INFO L271 PluginConnector]: Initializing CDTParser...
[2019-10-02 16:29:59,340 INFO L275 PluginConnector]: CDTParser initialized
[2019-10-02 16:29:59,341 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_init1_ground-2.i
[2019-10-02 16:29:59,418 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebfe8e339/9a04274307644c4490b241b6890dffbb/FLAG7ace5d06b
[2019-10-02 16:29:59,881 INFO L306 CDTParser]: Found 1 translation units.
[2019-10-02 16:29:59,883 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_init1_ground-2.i
[2019-10-02 16:29:59,887 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebfe8e339/9a04274307644c4490b241b6890dffbb/FLAG7ace5d06b
[2019-10-02 16:30:00,265 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebfe8e339/9a04274307644c4490b241b6890dffbb
[2019-10-02 16:30:00,273 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-10-02 16:30:00,275 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2019-10-02 16:30:00,275 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-10-02 16:30:00,276 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-10-02 16:30:00,279 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2019-10-02 16:30:00,280 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:30:00" (1/1) ...
[2019-10-02 16:30:00,283 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4197f41a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:00, skipping insertion in model container
[2019-10-02 16:30:00,284 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:30:00" (1/1) ...
[2019-10-02 16:30:00,291 INFO L142 MainTranslator]: Starting translation in SV-COMP mode
[2019-10-02 16:30:00,309 INFO L173 MainTranslator]: Built tables and reachable declarations
[2019-10-02 16:30:00,527 INFO L206 PostProcessor]: Analyzing one entry point: main
[2019-10-02 16:30:00,531 INFO L188 MainTranslator]: Completed pre-run
[2019-10-02 16:30:00,547 INFO L206 PostProcessor]: Analyzing one entry point: main
[2019-10-02 16:30:00,649 INFO L192 MainTranslator]: Completed translation
[2019-10-02 16:30:00,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:00 WrapperNode
[2019-10-02 16:30:00,650 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-10-02 16:30:00,650 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-10-02 16:30:00,650 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2019-10-02 16:30:00,651 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2019-10-02 16:30:00,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:00" (1/1) ...
[2019-10-02 16:30:00,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:00" (1/1) ...
[2019-10-02 16:30:00,670 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:00" (1/1) ...
[2019-10-02 16:30:00,671 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:00" (1/1) ...
[2019-10-02 16:30:00,676 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:00" (1/1) ...
[2019-10-02 16:30:00,680 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:00" (1/1) ...
[2019-10-02 16:30:00,682 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:00" (1/1) ...
[2019-10-02 16:30:00,683 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-10-02 16:30:00,684 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-10-02 16:30:00,684 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2019-10-02 16:30:00,684 INFO L275 PluginConnector]: RCFGBuilder initialized
[2019-10-02 16:30:00,685 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:00" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-02 16:30:00,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-10-02 16:30:00,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-10-02 16:30:00,740 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2019-10-02 16:30:00,740 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2019-10-02 16:30:00,740 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-10-02 16:30:00,740 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2019-10-02 16:30:00,741 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2019-10-02 16:30:00,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2019-10-02 16:30:00,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2019-10-02 16:30:00,741 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2019-10-02 16:30:00,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2019-10-02 16:30:00,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-10-02 16:30:00,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-10-02 16:30:00,943 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-10-02 16:30:00,943 INFO L283 CfgBuilder]: Removed 2 assume(true) statements.
[2019-10-02 16:30:00,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:30:00 BoogieIcfgContainer
[2019-10-02 16:30:00,945 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-10-02 16:30:00,945 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-10-02 16:30:00,946 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2019-10-02 16:30:00,948 INFO L275 PluginConnector]: TraceAbstraction initialized
[2019-10-02 16:30:00,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 04:30:00" (1/3) ...
[2019-10-02 16:30:00,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cd0c75d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:30:00, skipping insertion in model container
[2019-10-02 16:30:00,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:00" (2/3) ...
[2019-10-02 16:30:00,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cd0c75d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:30:00, skipping insertion in model container
[2019-10-02 16:30:00,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:30:00" (3/3) ...
[2019-10-02 16:30:00,952 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_init1_ground-2.i
[2019-10-02 16:30:00,961 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-10-02 16:30:00,968 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-10-02 16:30:00,983 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-10-02 16:30:01,003 INFO L377 AbstractCegarLoop]: Interprodecural is true
[2019-10-02 16:30:01,003 INFO L378 AbstractCegarLoop]: Hoare is false
[2019-10-02 16:30:01,003 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-10-02 16:30:01,003 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-10-02 16:30:01,004 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-10-02 16:30:01,004 INFO L382 AbstractCegarLoop]: Difference is false
[2019-10-02 16:30:01,004 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-10-02 16:30:01,004 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-10-02 16:30:01,017 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states.
[2019-10-02 16:30:01,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2019-10-02 16:30:01,025 INFO L403 BasicCegarLoop]: Found error trace
[2019-10-02 16:30:01,026 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-02 16:30:01,028 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-02 16:30:01,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2019-10-02 16:30:01,034 INFO L82 PathProgramCache]: Analyzing trace with hash -441053002, now seen corresponding path program 1 times
[2019-10-02 16:30:01,036 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy
[2019-10-02 16:30:01,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-02 16:30:01,086 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-02 16:30:01,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-02 16:30:01,086 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2019-10-02 16:30:01,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-02 16:30:01,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-02 16:30:01,166 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-02 16:30:01,166 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2019-10-02 16:30:01,167 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence
[2019-10-02 16:30:01,170 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states
[2019-10-02 16:30:01,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2019-10-02 16:30:01,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2019-10-02 16:30:01,183 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states.
[2019-10-02 16:30:01,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-02 16:30:01,197 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions.
[2019-10-02 16:30:01,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2019-10-02 16:30:01,199 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13
[2019-10-02 16:30:01,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-02 16:30:01,208 INFO L225 Difference]: With dead ends: 23
[2019-10-02 16:30:01,208 INFO L226 Difference]: Without dead ends: 18
[2019-10-02 16:30:01,210 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2019-10-02 16:30:01,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states.
[2019-10-02 16:30:01,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18.
[2019-10-02 16:30:01,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states.
[2019-10-02 16:30:01,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions.
[2019-10-02 16:30:01,243 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13
[2019-10-02 16:30:01,243 INFO L84 Accepts]: Finished accepts. word is rejected.
[2019-10-02 16:30:01,244 INFO L475 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions.
[2019-10-02 16:30:01,244 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states.
[2019-10-02 16:30:01,244 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions.
[2019-10-02 16:30:01,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2019-10-02 16:30:01,245 INFO L403 BasicCegarLoop]: Found error trace
[2019-10-02 16:30:01,245 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-02 16:30:01,245 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-02 16:30:01,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2019-10-02 16:30:01,246 INFO L82 PathProgramCache]: Analyzing trace with hash 303899570, now seen corresponding path program 1 times
[2019-10-02 16:30:01,246 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy
[2019-10-02 16:30:01,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-02 16:30:01,248 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-02 16:30:01,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-02 16:30:01,248 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2019-10-02 16:30:01,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-02 16:30:01,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-02 16:30:01,310 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-02 16:30:01,310 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-10-02 16:30:01,310 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence
[2019-10-02 16:30:01,314 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-10-02 16:30:01,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-10-02 16:30:01,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-10-02 16:30:01,315 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 3 states.
[2019-10-02 16:30:01,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-02 16:30:01,344 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions.
[2019-10-02 16:30:01,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2019-10-02 16:30:01,345 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13
[2019-10-02 16:30:01,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-02 16:30:01,345 INFO L225 Difference]: With dead ends: 19
[2019-10-02 16:30:01,346 INFO L226 Difference]: Without dead ends: 19
[2019-10-02 16:30:01,347 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-10-02 16:30:01,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states.
[2019-10-02 16:30:01,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19.
[2019-10-02 16:30:01,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states.
[2019-10-02 16:30:01,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions.
[2019-10-02 16:30:01,351 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 13
[2019-10-02 16:30:01,351 INFO L84 Accepts]: Finished accepts. word is rejected.
[2019-10-02 16:30:01,351 INFO L475 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions.
[2019-10-02 16:30:01,351 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-10-02 16:30:01,352 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions.
[2019-10-02 16:30:01,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2019-10-02 16:30:01,353 INFO L403 BasicCegarLoop]: Found error trace
[2019-10-02 16:30:01,354 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-02 16:30:01,354 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-02 16:30:01,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2019-10-02 16:30:01,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1260126610, now seen corresponding path program 1 times
[2019-10-02 16:30:01,355 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy
[2019-10-02 16:30:01,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-02 16:30:01,361 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-02 16:30:01,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-02 16:30:01,361 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2019-10-02 16:30:01,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-02 16:30:01,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-02 16:30:01,457 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2019-10-02 16:30:01,458 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION
[2019-10-02 16:30:01,459 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 15 with the following transitions:
[2019-10-02 16:30:01,461 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [12], [14], [18], [26], [36], [39], [41], [47], [48], [49], [51]
[2019-10-02 16:30:01,498 INFO L148 AbstractInterpreter]: Using domain IntervalDomain
[2019-10-02 16:30:01,499 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)
[2019-10-02 16:30:01,565 INFO L266 AbstractInterpreter]: Error location(s) were unreachable
[2019-10-02 16:30:01,567 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 15 root evaluator evaluations with a maximum evaluation depth of 0. Performed 15 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 17 variables.
[2019-10-02 16:30:01,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2019-10-02 16:30:01,570 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates
[2019-10-02 16:30:01,602 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes.
[2019-10-02 16:30:01,603 INFO L418 sIntCurrentIteration]: Unifying AI predicates
[2019-10-02 16:30:01,605 INFO L420 sIntCurrentIteration]: We unified 13 AI predicates to 13
[2019-10-02 16:30:01,605 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates
[2019-10-02 16:30:01,606 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-10-02 16:30:01,606 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4
[2019-10-02 16:30:01,606 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence
[2019-10-02 16:30:01,607 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states
[2019-10-02 16:30:01,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2019-10-02 16:30:01,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2019-10-02 16:30:01,608 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 2 states.
[2019-10-02 16:30:01,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-02 16:30:01,609 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions.
[2019-10-02 16:30:01,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2019-10-02 16:30:01,609 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14
[2019-10-02 16:30:01,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-02 16:30:01,610 INFO L225 Difference]: With dead ends: 6
[2019-10-02 16:30:01,610 INFO L226 Difference]: Without dead ends: 0
[2019-10-02 16:30:01,610 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2019-10-02 16:30:01,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2019-10-02 16:30:01,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2019-10-02 16:30:01,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2019-10-02 16:30:01,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2019-10-02 16:30:01,611 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14
[2019-10-02 16:30:01,612 INFO L84 Accepts]: Finished accepts. word is rejected.
[2019-10-02 16:30:01,612 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2019-10-02 16:30:01,612 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states.
[2019-10-02 16:30:01,612 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2019-10-02 16:30:01,612 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2019-10-02 16:30:01,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 04:30:01 BoogieIcfgContainer
[2019-10-02 16:30:01,617 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2019-10-02 16:30:01,620 INFO L168 Benchmark]: Toolchain (without parser) took 1343.54 ms. Allocated memory was 133.2 MB in the beginning and 199.8 MB in the end (delta: 66.6 MB). Free memory was 87.2 MB in the beginning and 125.2 MB in the end (delta: -38.0 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB.
[2019-10-02 16:30:01,620 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 133.2 MB. Free memory is still 105.6 MB. There was no memory consumed. Max. memory is 7.1 GB.
[2019-10-02 16:30:01,622 INFO L168 Benchmark]: CACSL2BoogieTranslator took 374.45 ms. Allocated memory was 133.2 MB in the beginning and 199.8 MB in the end (delta: 66.6 MB). Free memory was 87.2 MB in the beginning and 177.0 MB in the end (delta: -89.8 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB.
[2019-10-02 16:30:01,623 INFO L168 Benchmark]: Boogie Preprocessor took 33.39 ms. Allocated memory is still 199.8 MB. Free memory was 177.0 MB in the beginning and 174.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB.
[2019-10-02 16:30:01,624 INFO L168 Benchmark]: RCFGBuilder took 260.72 ms. Allocated memory is still 199.8 MB. Free memory was 174.9 MB in the beginning and 162.1 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB.
[2019-10-02 16:30:01,625 INFO L168 Benchmark]: TraceAbstraction took 671.38 ms. Allocated memory is still 199.8 MB. Free memory was 162.1 MB in the beginning and 125.2 MB in the end (delta: 36.9 MB). Peak memory consumption was 36.9 MB. Max. memory is 7.1 GB.
[2019-10-02 16:30:01,630 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.21 ms. Allocated memory is still 133.2 MB. Free memory is still 105.6 MB. There was no memory consumed. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 374.45 ms. Allocated memory was 133.2 MB in the beginning and 199.8 MB in the end (delta: 66.6 MB). Free memory was 87.2 MB in the beginning and 177.0 MB in the end (delta: -89.8 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 33.39 ms. Allocated memory is still 199.8 MB. Free memory was 177.0 MB in the beginning and 174.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 260.72 ms. Allocated memory is still 199.8 MB. Free memory was 174.9 MB in the beginning and 162.1 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 671.38 ms. Allocated memory is still 199.8 MB. Free memory was 162.1 MB in the beginning and 125.2 MB in the end (delta: 36.9 MB). Peak memory consumption was 36.9 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, 23 locations, 1 error locations. SAFE Result, 0.6s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 47 SDtfs, 0 SDslu, 16 SDs, 0 SdLazy, 3 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred 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, 0.9423076923076923 AbsIntWeakeningRatio, 0.6923076923076923 AbsIntAvgWeakeningVarsNumRemoved, 0.46153846153846156 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 533 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...