/usr/bin/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/array-examples/sanfoundry_10_ground.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:26:19,289 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:26:19,292 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:26:19,310 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:26:19,310 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:26:19,312 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:26:19,314 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:26:19,317 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:26:19,320 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:26:19,321 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:26:19,325 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:26:19,327 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:26:19,328 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:26:19,329 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:26:19,330 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:26:19,333 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:26:19,334 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:26:19,335 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:26:19,339 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:26:19,341 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:26:19,347 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:26:19,349 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:26:19,351 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:26:19,351 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:26:19,358 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:26:19,371 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:26:19,371 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:26:19,372 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:26:19,373 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-06 22:26:19,386 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:26:19,387 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:26:19,388 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:26:19,388 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:26:19,388 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:26:19,389 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:26:19,389 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:26:19,389 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:26:19,389 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:26:19,389 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:26:19,390 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:26:19,390 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:26:19,390 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:26:19,390 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:26:19,391 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:26:19,391 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:26:19,391 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:26:19,391 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:26:19,391 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:26:19,392 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:26:19,392 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:26:19,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:26:19,392 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:26:19,392 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:26:19,393 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:26:19,393 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:26:19,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:26:19,393 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:26:19,393 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-06 22:26:19,702 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:26:19,723 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:26:19,728 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:26:19,729 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:26:19,729 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:26:19,730 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/sanfoundry_10_ground.c [2019-11-06 22:26:19,799 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f0bdff7d/3aa4cbbbc5c94fc386bb6d4cca7709d7/FLAG245132957 [2019-11-06 22:26:20,278 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:26:20,279 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/sanfoundry_10_ground.c [2019-11-06 22:26:20,286 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f0bdff7d/3aa4cbbbc5c94fc386bb6d4cca7709d7/FLAG245132957 [2019-11-06 22:26:20,625 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f0bdff7d/3aa4cbbbc5c94fc386bb6d4cca7709d7 [2019-11-06 22:26:20,634 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:26:20,635 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:26:20,636 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:26:20,637 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:26:20,640 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:26:20,641 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:26:20" (1/1) ... [2019-11-06 22:26:20,644 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bc4d66f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:20, skipping insertion in model container [2019-11-06 22:26:20,644 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:26:20" (1/1) ... [2019-11-06 22:26:20,652 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:26:20,672 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:26:20,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:26:20,847 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:26:20,887 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:26:20,905 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:26:20,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:20 WrapperNode [2019-11-06 22:26:20,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:26:20,907 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:26:20,907 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:26:20,907 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:26:21,002 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:20" (1/1) ... [2019-11-06 22:26:21,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:20" (1/1) ... [2019-11-06 22:26:21,011 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:20" (1/1) ... [2019-11-06 22:26:21,012 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:20" (1/1) ... [2019-11-06 22:26:21,025 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:20" (1/1) ... [2019-11-06 22:26:21,031 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:20" (1/1) ... [2019-11-06 22:26:21,032 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:20" (1/1) ... [2019-11-06 22:26:21,034 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:26:21,035 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:26:21,035 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:26:21,035 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:26:21,036 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:20" (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 [2019-11-06 22:26:21,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:26:21,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:26:21,106 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-06 22:26:21,106 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:26:21,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:26:21,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-06 22:26:21,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:26:21,107 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:26:21,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 22:26:21,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 22:26:21,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 22:26:21,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 22:26:21,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:26:21,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:26:21,400 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:26:21,400 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-06 22:26:21,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:26:21 BoogieIcfgContainer [2019-11-06 22:26:21,402 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:26:21,403 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:26:21,403 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:26:21,406 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:26:21,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:26:20" (1/3) ... [2019-11-06 22:26:21,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@315af5c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:26:21, skipping insertion in model container [2019-11-06 22:26:21,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:20" (2/3) ... [2019-11-06 22:26:21,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@315af5c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:26:21, skipping insertion in model container [2019-11-06 22:26:21,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:26:21" (3/3) ... [2019-11-06 22:26:21,410 INFO L109 eAbstractionObserver]: Analyzing ICFG sanfoundry_10_ground.c [2019-11-06 22:26:21,420 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:26:21,428 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:26:21,441 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:26:21,477 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:26:21,478 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:26:21,478 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:26:21,478 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:26:21,478 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:26:21,478 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:26:21,478 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:26:21,479 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:26:21,495 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2019-11-06 22:26:21,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-06 22:26:21,501 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:26:21,502 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:26:21,503 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:26:21,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:21,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1746448729, now seen corresponding path program 1 times [2019-11-06 22:26:21,515 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:26:21,516 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061082428] [2019-11-06 22:26:21,516 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:26:21,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:21,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:26:21,640 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061082428] [2019-11-06 22:26:21,641 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:26:21,641 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-06 22:26:21,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617812887] [2019-11-06 22:26:21,646 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 22:26:21,647 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:26:21,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-06 22:26:21,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-06 22:26:21,659 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2019-11-06 22:26:21,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:26:21,680 INFO L93 Difference]: Finished difference Result 54 states and 75 transitions. [2019-11-06 22:26:21,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 22:26:21,681 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-11-06 22:26:21,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:26:21,689 INFO L225 Difference]: With dead ends: 54 [2019-11-06 22:26:21,689 INFO L226 Difference]: Without dead ends: 26 [2019-11-06 22:26:21,692 INFO L630 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 [2019-11-06 22:26:21,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-06 22:26:21,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-11-06 22:26:21,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-06 22:26:21,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2019-11-06 22:26:21,730 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 16 [2019-11-06 22:26:21,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:26:21,731 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2019-11-06 22:26:21,731 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 22:26:21,731 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2019-11-06 22:26:21,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-06 22:26:21,732 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:26:21,732 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:26:21,733 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:26:21,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:21,734 INFO L82 PathProgramCache]: Analyzing trace with hash 934485258, now seen corresponding path program 1 times [2019-11-06 22:26:21,734 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:26:21,735 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203697360] [2019-11-06 22:26:21,735 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:26:21,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:21,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:26:21,800 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203697360] [2019-11-06 22:26:21,800 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:26:21,800 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:26:21,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750529133] [2019-11-06 22:26:21,802 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:26:21,802 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:26:21,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:26:21,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:26:21,803 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand 3 states. [2019-11-06 22:26:21,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:26:21,847 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2019-11-06 22:26:21,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:26:21,849 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-11-06 22:26:21,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:26:21,851 INFO L225 Difference]: With dead ends: 43 [2019-11-06 22:26:21,851 INFO L226 Difference]: Without dead ends: 28 [2019-11-06 22:26:21,852 INFO L630 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 [2019-11-06 22:26:21,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-06 22:26:21,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-11-06 22:26:21,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-06 22:26:21,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2019-11-06 22:26:21,859 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2019-11-06 22:26:21,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:26:21,859 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2019-11-06 22:26:21,859 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:26:21,860 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2019-11-06 22:26:21,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-06 22:26:21,861 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:26:21,861 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:26:21,861 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:26:21,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:21,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1806235348, now seen corresponding path program 1 times [2019-11-06 22:26:21,862 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:26:21,862 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85544389] [2019-11-06 22:26:21,862 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:26:21,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:21,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:26:21,991 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85544389] [2019-11-06 22:26:21,991 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227164049] [2019-11-06 22:26:21,991 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:26:22,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:22,049 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 22:26:22,055 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:26:22,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 22:26:22,093 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 22:26:22,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 22:26:22,120 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-06 22:26:22,120 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2019-11-06 22:26:22,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430609499] [2019-11-06 22:26:22,121 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:26:22,121 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:26:22,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:26:22,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-06 22:26:22,122 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 4 states. [2019-11-06 22:26:22,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:26:22,195 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2019-11-06 22:26:22,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:26:22,196 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2019-11-06 22:26:22,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:26:22,197 INFO L225 Difference]: With dead ends: 51 [2019-11-06 22:26:22,197 INFO L226 Difference]: Without dead ends: 31 [2019-11-06 22:26:22,198 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-06 22:26:22,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-06 22:26:22,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-11-06 22:26:22,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-06 22:26:22,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2019-11-06 22:26:22,204 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 20 [2019-11-06 22:26:22,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:26:22,204 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2019-11-06 22:26:22,204 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:26:22,204 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2019-11-06 22:26:22,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-06 22:26:22,205 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:26:22,206 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:26:22,409 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:26:22,410 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:26:22,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:22,410 INFO L82 PathProgramCache]: Analyzing trace with hash 2051889264, now seen corresponding path program 1 times [2019-11-06 22:26:22,411 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:26:22,411 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629956682] [2019-11-06 22:26:22,412 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:26:22,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:22,499 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-06 22:26:22,500 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629956682] [2019-11-06 22:26:22,500 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294811987] [2019-11-06 22:26:22,500 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:26:22,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:22,556 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-06 22:26:22,561 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:26:22,635 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 22:26:22,635 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 22:26:22,685 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 22:26:22,685 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [954112933] [2019-11-06 22:26:22,692 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 25 [2019-11-06 22:26:22,732 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-06 22:26:22,732 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-11-06 22:26:22,804 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-11-06 22:26:22,806 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 19 root evaluator evaluations with a maximum evaluation depth of 2. Performed 19 inverse root evaluator evaluations with a maximum inverse evaluation depth of 2. Never found a fixpoint. Largest state had 26 variables. [2019-11-06 22:26:22,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:22,810 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-11-06 22:26:22,850 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-11-06 22:26:22,850 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-11-06 22:26:22,852 INFO L553 sIntCurrentIteration]: We unified 23 AI predicates to 23 [2019-11-06 22:26:22,852 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-11-06 22:26:22,853 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-11-06 22:26:22,853 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 5, 5] total 11 [2019-11-06 22:26:22,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627224607] [2019-11-06 22:26:22,854 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 22:26:22,854 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:26:22,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:26:22,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2019-11-06 22:26:22,855 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 2 states. [2019-11-06 22:26:22,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:26:22,857 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2019-11-06 22:26:22,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 22:26:22,858 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2019-11-06 22:26:22,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:26:22,858 INFO L225 Difference]: With dead ends: 31 [2019-11-06 22:26:22,858 INFO L226 Difference]: Without dead ends: 0 [2019-11-06 22:26:22,859 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2019-11-06 22:26:22,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-06 22:26:22,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-06 22:26:22,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-06 22:26:22,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-06 22:26:22,860 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2019-11-06 22:26:22,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:26:22,860 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-06 22:26:22,861 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 22:26:22,861 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-06 22:26:22,861 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-06 22:26:23,065 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:26:23,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-06 22:26:23,094 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-11-06 22:26:23,094 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-11-06 22:26:23,095 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-06 22:26:23,095 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-06 22:26:23,095 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-06 22:26:23,095 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-06 22:26:23,096 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-06 22:26:23,096 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 47) no Hoare annotation was computed. [2019-11-06 22:26:23,096 INFO L443 ceAbstractionStarter]: For program point L19-2(lines 19 22) no Hoare annotation was computed. [2019-11-06 22:26:23,096 INFO L439 ceAbstractionStarter]: At program point L19-3(lines 19 22) the Hoare annotation is: false [2019-11-06 22:26:23,096 INFO L443 ceAbstractionStarter]: For program point L19-4(lines 19 22) no Hoare annotation was computed. [2019-11-06 22:26:23,096 INFO L443 ceAbstractionStarter]: For program point L40(lines 40 45) no Hoare annotation was computed. [2019-11-06 22:26:23,096 INFO L443 ceAbstractionStarter]: For program point L32(lines 11 47) no Hoare annotation was computed. [2019-11-06 22:26:23,097 INFO L443 ceAbstractionStarter]: For program point L24-2(lines 24 31) no Hoare annotation was computed. [2019-11-06 22:26:23,097 INFO L439 ceAbstractionStarter]: At program point L24-3(lines 24 31) the Hoare annotation is: false [2019-11-06 22:26:23,097 INFO L443 ceAbstractionStarter]: For program point L24-4(lines 11 47) no Hoare annotation was computed. [2019-11-06 22:26:23,097 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 10 47) no Hoare annotation was computed. [2019-11-06 22:26:23,097 INFO L443 ceAbstractionStarter]: For program point L42-2(lines 42 44) no Hoare annotation was computed. [2019-11-06 22:26:23,097 INFO L439 ceAbstractionStarter]: At program point L42-3(lines 42 44) the Hoare annotation is: false [2019-11-06 22:26:23,097 INFO L443 ceAbstractionStarter]: For program point L34-2(lines 34 37) no Hoare annotation was computed. [2019-11-06 22:26:23,097 INFO L439 ceAbstractionStarter]: At program point L34-3(lines 34 37) the Hoare annotation is: false [2019-11-06 22:26:23,098 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 10 47) the Hoare annotation is: true [2019-11-06 22:26:23,098 INFO L443 ceAbstractionStarter]: For program point L26(lines 26 30) no Hoare annotation was computed. [2019-11-06 22:26:23,098 INFO L439 ceAbstractionStarter]: At program point L43(line 43) the Hoare annotation is: false [2019-11-06 22:26:23,098 INFO L443 ceAbstractionStarter]: For program point L43-1(line 43) no Hoare annotation was computed. [2019-11-06 22:26:23,098 INFO L443 ceAbstractionStarter]: For program point L2-1(line 2) no Hoare annotation was computed. [2019-11-06 22:26:23,098 INFO L443 ceAbstractionStarter]: For program point L2-3(line 2) no Hoare annotation was computed. [2019-11-06 22:26:23,099 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2019-11-06 22:26:23,099 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2019-11-06 22:26:23,099 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2019-11-06 22:26:23,099 INFO L443 ceAbstractionStarter]: For program point L2(line 2) no Hoare annotation was computed. [2019-11-06 22:26:23,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:26:23 BoogieIcfgContainer [2019-11-06 22:26:23,107 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-06 22:26:23,110 INFO L168 Benchmark]: Toolchain (without parser) took 2473.51 ms. Allocated memory was 146.3 MB in the beginning and 234.9 MB in the end (delta: 88.6 MB). Free memory was 105.4 MB in the beginning and 182.6 MB in the end (delta: -77.2 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:23,111 INFO L168 Benchmark]: CDTParser took 1.21 ms. Allocated memory is still 146.3 MB. Free memory was 123.3 MB in the beginning and 123.1 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-11-06 22:26:23,111 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.10 ms. Allocated memory is still 146.3 MB. Free memory was 105.2 MB in the beginning and 94.9 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:23,113 INFO L168 Benchmark]: Boogie Preprocessor took 127.63 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 94.9 MB in the beginning and 180.8 MB in the end (delta: -85.9 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:23,113 INFO L168 Benchmark]: RCFGBuilder took 367.15 ms. Allocated memory is still 202.9 MB. Free memory was 180.8 MB in the beginning and 164.8 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:23,114 INFO L168 Benchmark]: TraceAbstraction took 1704.05 ms. Allocated memory was 202.9 MB in the beginning and 234.9 MB in the end (delta: 32.0 MB). Free memory was 164.2 MB in the beginning and 182.6 MB in the end (delta: -18.4 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:23,119 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.21 ms. Allocated memory is still 146.3 MB. Free memory was 123.3 MB in the beginning and 123.1 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 270.10 ms. Allocated memory is still 146.3 MB. Free memory was 105.2 MB in the beginning and 94.9 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.63 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 94.9 MB in the beginning and 180.8 MB in the end (delta: -85.9 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 367.15 ms. Allocated memory is still 202.9 MB. Free memory was 180.8 MB in the beginning and 164.8 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1704.05 ms. Allocated memory was 202.9 MB in the beginning and 234.9 MB in the end (delta: 32.0 MB). Free memory was 164.2 MB in the beginning and 182.6 MB in the end (delta: -18.4 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 31 locations, 1 error locations. Result: SAFE, OverallTime: 1.6s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 95 SDtfs, 9 SDslu, 52 SDs, 0 SdLazy, 32 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 103 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 13 PreInvPairs, 13 NumberOfFragments, 10 HoareAnnotationTreeSize, 13 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 120 NumberOfCodeBlocks, 120 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 156 ConstructedInterpolants, 0 QuantifiedInterpolants, 6390 SizeOfPredicates, 4 NumberOfNonLiveVariables, 174 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 8/18 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 119, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.9239130434782609, AVG_VARS_REMOVED_DURING_WEAKENING: 0.9130434782608695, AVG_WEAKENED_CONJUNCTS: 0.2608695652173913, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...