/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 -i ../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 21:22:14,132 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 21:22:14,134 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 21:22:14,151 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 21:22:14,151 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 21:22:14,153 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 21:22:14,155 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 21:22:14,164 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 21:22:14,166 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 21:22:14,166 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 21:22:14,169 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 21:22:14,171 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 21:22:14,171 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 21:22:14,174 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 21:22:14,174 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 21:22:14,175 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 21:22:14,178 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 21:22:14,179 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 21:22:14,182 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 21:22:14,186 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 21:22:14,187 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 21:22:14,188 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 21:22:14,192 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 21:22:14,193 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 21:22:14,195 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 21:22:14,211 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 21:22:14,213 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 21:22:14,213 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 21:22:14,214 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 21:22:14,237 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 21:22:14,237 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 21:22:14,238 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 21:22:14,239 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 21:22:14,239 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 21:22:14,239 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 21:22:14,239 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 21:22:14,239 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 21:22:14,239 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 21:22:14,239 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 21:22:14,240 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 21:22:14,240 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 21:22:14,240 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 21:22:14,240 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 21:22:14,240 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 21:22:14,240 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 21:22:14,241 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 21:22:14,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 21:22:14,241 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 21:22:14,241 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 21:22:14,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 21:22:14,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:22:14,242 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 21:22:14,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 21:22:14,242 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 21:22:14,242 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 21:22:14,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 21:22:14,243 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 21:22:14,243 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 21:22:14,526 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 21:22:14,537 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 21:22:14,540 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 21:22:14,542 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 21:22:14,542 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 21:22:14,543 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i [2019-11-06 21:22:14,603 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c475e24d/2b8866eeebaa4beeaa6aa366e4286f24/FLAG3a789f5ae [2019-11-06 21:22:15,056 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 21:22:15,057 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i [2019-11-06 21:22:15,065 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c475e24d/2b8866eeebaa4beeaa6aa366e4286f24/FLAG3a789f5ae [2019-11-06 21:22:15,429 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c475e24d/2b8866eeebaa4beeaa6aa366e4286f24 [2019-11-06 21:22:15,437 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 21:22:15,439 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 21:22:15,440 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 21:22:15,440 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 21:22:15,444 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 21:22:15,445 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:22:15" (1/1) ... [2019-11-06 21:22:15,447 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76874dbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:22:15, skipping insertion in model container [2019-11-06 21:22:15,447 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:22:15" (1/1) ... [2019-11-06 21:22:15,455 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 21:22:15,473 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 21:22:15,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:22:15,630 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 21:22:15,648 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:22:15,662 INFO L192 MainTranslator]: Completed translation [2019-11-06 21:22:15,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:22:15 WrapperNode [2019-11-06 21:22:15,663 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 21:22:15,665 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 21:22:15,665 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 21:22:15,665 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 21:22:15,753 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:22:15" (1/1) ... [2019-11-06 21:22:15,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:22:15" (1/1) ... [2019-11-06 21:22:15,759 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:22:15" (1/1) ... [2019-11-06 21:22:15,759 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:22:15" (1/1) ... [2019-11-06 21:22:15,764 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:22:15" (1/1) ... [2019-11-06 21:22:15,770 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:22:15" (1/1) ... [2019-11-06 21:22:15,771 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:22:15" (1/1) ... [2019-11-06 21:22:15,773 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 21:22:15,773 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 21:22:15,774 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 21:22:15,774 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 21:22:15,775 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:22:15" (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 21:22:15,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 21:22:15,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 21:22:15,832 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-06 21:22:15,832 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 21:22:15,833 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 21:22:15,833 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-06 21:22:15,833 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-06 21:22:15,833 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 21:22:15,833 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 21:22:15,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 21:22:15,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 21:22:16,092 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 21:22:16,093 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-11-06 21:22:16,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:22:16 BoogieIcfgContainer [2019-11-06 21:22:16,095 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 21:22:16,096 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 21:22:16,096 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 21:22:16,099 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 21:22:16,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:22:15" (1/3) ... [2019-11-06 21:22:16,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35ca26f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:22:16, skipping insertion in model container [2019-11-06 21:22:16,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:22:15" (2/3) ... [2019-11-06 21:22:16,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35ca26f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:22:16, skipping insertion in model container [2019-11-06 21:22:16,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:22:16" (3/3) ... [2019-11-06 21:22:16,104 INFO L109 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i [2019-11-06 21:22:16,116 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 21:22:16,124 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 21:22:16,137 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 21:22:16,164 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 21:22:16,164 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 21:22:16,164 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 21:22:16,164 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 21:22:16,165 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 21:22:16,165 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 21:22:16,165 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 21:22:16,165 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 21:22:16,202 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2019-11-06 21:22:16,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-06 21:22:16,209 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:22:16,210 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:22:16,212 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:22:16,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:22:16,218 INFO L82 PathProgramCache]: Analyzing trace with hash 2074932940, now seen corresponding path program 1 times [2019-11-06 21:22:16,228 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:22:16,228 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432066599] [2019-11-06 21:22:16,229 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:22:16,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:16,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:16,334 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 21:22:16,335 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432066599] [2019-11-06 21:22:16,336 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:22:16,336 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-06 21:22:16,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155966389] [2019-11-06 21:22:16,342 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 21:22:16,343 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:22:16,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-06 21:22:16,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-06 21:22:16,356 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 2 states. [2019-11-06 21:22:16,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:22:16,392 INFO L93 Difference]: Finished difference Result 87 states and 156 transitions. [2019-11-06 21:22:16,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 21:22:16,393 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2019-11-06 21:22:16,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:22:16,404 INFO L225 Difference]: With dead ends: 87 [2019-11-06 21:22:16,405 INFO L226 Difference]: Without dead ends: 42 [2019-11-06 21:22:16,410 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 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 21:22:16,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-11-06 21:22:16,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2019-11-06 21:22:16,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-11-06 21:22:16,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 60 transitions. [2019-11-06 21:22:16,458 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 60 transitions. Word has length 12 [2019-11-06 21:22:16,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:22:16,459 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 60 transitions. [2019-11-06 21:22:16,459 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 21:22:16,459 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 60 transitions. [2019-11-06 21:22:16,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-06 21:22:16,460 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:22:16,461 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:22:16,461 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:22:16,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:22:16,462 INFO L82 PathProgramCache]: Analyzing trace with hash -132543993, now seen corresponding path program 1 times [2019-11-06 21:22:16,462 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:22:16,462 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8506731] [2019-11-06 21:22:16,463 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:22:16,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:16,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:16,565 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 21:22:16,566 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8506731] [2019-11-06 21:22:16,566 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:22:16,566 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 21:22:16,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340020611] [2019-11-06 21:22:16,568 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 21:22:16,569 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:22:16,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 21:22:16,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 21:22:16,570 INFO L87 Difference]: Start difference. First operand 42 states and 60 transitions. Second operand 5 states. [2019-11-06 21:22:16,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:22:16,785 INFO L93 Difference]: Finished difference Result 48 states and 65 transitions. [2019-11-06 21:22:16,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-06 21:22:16,786 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-11-06 21:22:16,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:22:16,788 INFO L225 Difference]: With dead ends: 48 [2019-11-06 21:22:16,788 INFO L226 Difference]: Without dead ends: 46 [2019-11-06 21:22:16,790 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-06 21:22:16,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-11-06 21:22:16,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2019-11-06 21:22:16,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-11-06 21:22:16,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 63 transitions. [2019-11-06 21:22:16,811 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 63 transitions. Word has length 13 [2019-11-06 21:22:16,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:22:16,811 INFO L462 AbstractCegarLoop]: Abstraction has 46 states and 63 transitions. [2019-11-06 21:22:16,812 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 21:22:16,812 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 63 transitions. [2019-11-06 21:22:16,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-06 21:22:16,813 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:22:16,813 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:22:16,814 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:22:16,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:22:16,814 INFO L82 PathProgramCache]: Analyzing trace with hash -811261734, now seen corresponding path program 1 times [2019-11-06 21:22:16,815 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:22:16,815 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385406577] [2019-11-06 21:22:16,815 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:22:16,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:16,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:16,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:16,889 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:22:16,894 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385406577] [2019-11-06 21:22:16,895 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:22:16,895 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 21:22:16,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122763578] [2019-11-06 21:22:16,896 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 21:22:16,896 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:22:16,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 21:22:16,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 21:22:16,897 INFO L87 Difference]: Start difference. First operand 46 states and 63 transitions. Second operand 5 states. [2019-11-06 21:22:16,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:22:16,992 INFO L93 Difference]: Finished difference Result 52 states and 68 transitions. [2019-11-06 21:22:16,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-06 21:22:16,993 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2019-11-06 21:22:16,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:22:16,994 INFO L225 Difference]: With dead ends: 52 [2019-11-06 21:22:16,994 INFO L226 Difference]: Without dead ends: 40 [2019-11-06 21:22:16,995 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-06 21:22:16,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-11-06 21:22:17,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-11-06 21:22:17,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-06 21:22:17,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2019-11-06 21:22:17,003 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 18 [2019-11-06 21:22:17,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:22:17,004 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions. [2019-11-06 21:22:17,004 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 21:22:17,004 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2019-11-06 21:22:17,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-06 21:22:17,005 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:22:17,005 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:22:17,005 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:22:17,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:22:17,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1679618026, now seen corresponding path program 1 times [2019-11-06 21:22:17,006 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:22:17,007 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520776641] [2019-11-06 21:22:17,007 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:22:17,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:17,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:17,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:17,106 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:22:17,107 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520776641] [2019-11-06 21:22:17,107 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:22:17,107 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 21:22:17,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442610335] [2019-11-06 21:22:17,108 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 21:22:17,108 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:22:17,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 21:22:17,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-06 21:22:17,109 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand 6 states. [2019-11-06 21:22:17,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:22:17,216 INFO L93 Difference]: Finished difference Result 55 states and 70 transitions. [2019-11-06 21:22:17,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 21:22:17,217 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2019-11-06 21:22:17,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:22:17,218 INFO L225 Difference]: With dead ends: 55 [2019-11-06 21:22:17,218 INFO L226 Difference]: Without dead ends: 53 [2019-11-06 21:22:17,219 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-06 21:22:17,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-11-06 21:22:17,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2019-11-06 21:22:17,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-11-06 21:22:17,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 66 transitions. [2019-11-06 21:22:17,230 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 66 transitions. Word has length 19 [2019-11-06 21:22:17,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:22:17,230 INFO L462 AbstractCegarLoop]: Abstraction has 51 states and 66 transitions. [2019-11-06 21:22:17,230 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 21:22:17,231 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 66 transitions. [2019-11-06 21:22:17,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-06 21:22:17,232 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:22:17,233 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:22:17,233 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:22:17,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:22:17,234 INFO L82 PathProgramCache]: Analyzing trace with hash 2122625936, now seen corresponding path program 1 times [2019-11-06 21:22:17,234 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:22:17,234 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855162634] [2019-11-06 21:22:17,234 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:22:17,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:17,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:17,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:17,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:17,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:17,378 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-06 21:22:17,378 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855162634] [2019-11-06 21:22:17,379 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895079094] [2019-11-06 21:22:17,379 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 21:22:17,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:17,426 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-06 21:22:17,433 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:22:17,594 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:22:17,635 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-06 21:22:17,636 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 21:22:17,637 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10] total 14 [2019-11-06 21:22:17,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315876283] [2019-11-06 21:22:17,638 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-06 21:22:17,639 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:22:17,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-06 21:22:17,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2019-11-06 21:22:17,641 INFO L87 Difference]: Start difference. First operand 51 states and 66 transitions. Second operand 14 states. [2019-11-06 21:22:17,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:22:17,857 INFO L93 Difference]: Finished difference Result 51 states and 66 transitions. [2019-11-06 21:22:17,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-06 21:22:17,857 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 33 [2019-11-06 21:22:17,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:22:17,858 INFO L225 Difference]: With dead ends: 51 [2019-11-06 21:22:17,858 INFO L226 Difference]: Without dead ends: 0 [2019-11-06 21:22:17,861 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2019-11-06 21:22:17,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-06 21:22:17,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-06 21:22:17,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-06 21:22:17,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-06 21:22:17,862 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2019-11-06 21:22:17,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:22:17,863 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-06 21:22:17,863 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-06 21:22:17,863 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-06 21:22:17,863 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-06 21:22:18,069 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:22:18,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-06 21:22:18,274 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-11-06 21:22:18,275 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-06 21:22:18,275 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-06 21:22:18,275 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-06 21:22:18,275 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-06 21:22:18,275 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-06 21:22:18,276 INFO L439 ceAbstractionStarter]: At program point L31(line 31) the Hoare annotation is: (and (<= main_~t~0 main_~tagbuf_len~0) (<= 0 main_~t~0) (not (= main_~tagbuf_len~0 main_~t~0))) [2019-11-06 21:22:18,276 INFO L446 ceAbstractionStarter]: At program point L60(lines 11 63) the Hoare annotation is: true [2019-11-06 21:22:18,277 INFO L439 ceAbstractionStarter]: At program point L27(line 27) the Hoare annotation is: (and (<= main_~t~0 main_~tagbuf_len~0) (<= 0 main_~t~0) (not (= main_~tagbuf_len~0 main_~t~0))) [2019-11-06 21:22:18,277 INFO L439 ceAbstractionStarter]: At program point L27-1(line 27) the Hoare annotation is: (and (<= main_~t~0 main_~tagbuf_len~0) (<= 0 main_~t~0) (not (= main_~tagbuf_len~0 main_~t~0))) [2019-11-06 21:22:18,277 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 63) no Hoare annotation was computed. [2019-11-06 21:22:18,278 INFO L443 ceAbstractionStarter]: For program point L56(line 56) no Hoare annotation was computed. [2019-11-06 21:22:18,278 INFO L443 ceAbstractionStarter]: For program point L52(lines 52 54) no Hoare annotation was computed. [2019-11-06 21:22:18,279 INFO L443 ceAbstractionStarter]: For program point L19(lines 19 23) no Hoare annotation was computed. [2019-11-06 21:22:18,279 INFO L443 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2019-11-06 21:22:18,279 INFO L443 ceAbstractionStarter]: For program point L15-1(line 15) no Hoare annotation was computed. [2019-11-06 21:22:18,279 INFO L443 ceAbstractionStarter]: For program point L40(lines 40 54) no Hoare annotation was computed. [2019-11-06 21:22:18,279 INFO L439 ceAbstractionStarter]: At program point L40-1(lines 40 54) the Hoare annotation is: (and (<= main_~t~0 main_~tagbuf_len~0) (<= 0 main_~t~0) (not (= main_~tagbuf_len~0 main_~t~0))) [2019-11-06 21:22:18,280 INFO L439 ceAbstractionStarter]: At program point L36(line 36) the Hoare annotation is: (and (<= main_~t~0 main_~tagbuf_len~0) (<= 0 main_~t~0)) [2019-11-06 21:22:18,281 INFO L439 ceAbstractionStarter]: At program point L36-1(line 36) the Hoare annotation is: (and (<= main_~t~0 main_~tagbuf_len~0) (<= 0 main_~t~0)) [2019-11-06 21:22:18,281 INFO L443 ceAbstractionStarter]: For program point L32(line 32) no Hoare annotation was computed. [2019-11-06 21:22:18,282 INFO L443 ceAbstractionStarter]: For program point L28(line 28) no Hoare annotation was computed. [2019-11-06 21:22:18,282 INFO L443 ceAbstractionStarter]: For program point L24(lines 24 26) no Hoare annotation was computed. [2019-11-06 21:22:18,283 INFO L439 ceAbstractionStarter]: At program point L20(line 20) the Hoare annotation is: (and (<= main_~t~0 main_~tagbuf_len~0) (<= 0 main_~t~0)) [2019-11-06 21:22:18,285 INFO L439 ceAbstractionStarter]: At program point L20-1(line 20) the Hoare annotation is: (and (<= main_~t~0 main_~tagbuf_len~0) (<= 0 main_~t~0)) [2019-11-06 21:22:18,285 INFO L443 ceAbstractionStarter]: For program point L45(lines 45 49) no Hoare annotation was computed. [2019-11-06 21:22:18,285 INFO L443 ceAbstractionStarter]: For program point L41(lines 41 50) no Hoare annotation was computed. [2019-11-06 21:22:18,285 INFO L439 ceAbstractionStarter]: At program point L46(line 46) the Hoare annotation is: (and (<= main_~t~0 main_~tagbuf_len~0) (<= 0 main_~t~0)) [2019-11-06 21:22:18,285 INFO L439 ceAbstractionStarter]: At program point L46-1(line 46) the Hoare annotation is: (and (<= main_~t~0 main_~tagbuf_len~0) (<= 0 main_~t~0)) [2019-11-06 21:22:18,285 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 10 63) no Hoare annotation was computed. [2019-11-06 21:22:18,286 INFO L439 ceAbstractionStarter]: At program point L42(line 42) the Hoare annotation is: (and (<= main_~t~0 main_~tagbuf_len~0) (<= 0 main_~t~0) (not (= main_~tagbuf_len~0 main_~t~0))) [2019-11-06 21:22:18,286 INFO L439 ceAbstractionStarter]: At program point L42-1(line 42) the Hoare annotation is: (and (<= main_~t~0 main_~tagbuf_len~0) (<= 0 main_~t~0) (not (= main_~tagbuf_len~0 main_~t~0))) [2019-11-06 21:22:18,286 INFO L439 ceAbstractionStarter]: At program point L34-2(lines 34 58) the Hoare annotation is: (and (<= 1 main_~tagbuf_len~0) (<= main_~t~0 main_~tagbuf_len~0) (<= 0 main_~t~0)) [2019-11-06 21:22:18,286 INFO L439 ceAbstractionStarter]: At program point L34-3(lines 34 58) the Hoare annotation is: (and (<= main_~t~0 main_~tagbuf_len~0) (<= 0 main_~t~0) (not (= main_~tagbuf_len~0 main_~t~0))) [2019-11-06 21:22:18,286 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 10 63) the Hoare annotation is: true [2019-11-06 21:22:18,286 INFO L439 ceAbstractionStarter]: At program point L59(line 59) the Hoare annotation is: (and (<= main_~t~0 main_~tagbuf_len~0) (<= 0 main_~t~0) (not (= main_~tagbuf_len~0 main_~t~0))) [2019-11-06 21:22:18,290 INFO L439 ceAbstractionStarter]: At program point L55(line 55) the Hoare annotation is: (and (<= main_~t~0 main_~tagbuf_len~0) (<= 0 main_~t~0) (not (= main_~tagbuf_len~0 main_~t~0))) [2019-11-06 21:22:18,290 INFO L439 ceAbstractionStarter]: At program point L18-2(lines 18 30) the Hoare annotation is: (and (<= main_~t~0 main_~tagbuf_len~0) (<= 0 main_~t~0)) [2019-11-06 21:22:18,291 INFO L439 ceAbstractionStarter]: At program point L18-3(lines 18 30) the Hoare annotation is: (and (<= main_~t~0 main_~tagbuf_len~0) (<= 0 main_~t~0) (not (= main_~tagbuf_len~0 main_~t~0))) [2019-11-06 21:22:18,291 INFO L443 ceAbstractionStarter]: For program point L43(line 43) no Hoare annotation was computed. [2019-11-06 21:22:18,291 INFO L443 ceAbstractionStarter]: For program point L35(lines 35 39) no Hoare annotation was computed. [2019-11-06 21:22:18,291 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-11-06 21:22:18,291 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-06 21:22:18,292 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-11-06 21:22:18,292 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-06 21:22:18,292 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-06 21:22:18,292 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-11-06 21:22:18,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:22:18 BoogieIcfgContainer [2019-11-06 21:22:18,309 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-06 21:22:18,313 INFO L168 Benchmark]: Toolchain (without parser) took 2871.73 ms. Allocated memory was 138.4 MB in the beginning and 235.4 MB in the end (delta: 97.0 MB). Free memory was 102.0 MB in the beginning and 123.1 MB in the end (delta: -21.2 MB). Peak memory consumption was 75.8 MB. Max. memory is 7.1 GB. [2019-11-06 21:22:18,314 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-06 21:22:18,315 INFO L168 Benchmark]: CACSL2BoogieTranslator took 223.61 ms. Allocated memory is still 138.4 MB. Free memory was 101.8 MB in the beginning and 91.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2019-11-06 21:22:18,318 INFO L168 Benchmark]: Boogie Preprocessor took 108.45 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 91.9 MB in the beginning and 180.6 MB in the end (delta: -88.7 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2019-11-06 21:22:18,320 INFO L168 Benchmark]: RCFGBuilder took 321.48 ms. Allocated memory is still 201.9 MB. Free memory was 180.6 MB in the beginning and 164.2 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. [2019-11-06 21:22:18,321 INFO L168 Benchmark]: TraceAbstraction took 2212.60 ms. Allocated memory was 201.9 MB in the beginning and 235.4 MB in the end (delta: 33.6 MB). Free memory was 164.2 MB in the beginning and 123.1 MB in the end (delta: 41.0 MB). Peak memory consumption was 74.6 MB. Max. memory is 7.1 GB. [2019-11-06 21:22:18,324 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 138.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 223.61 ms. Allocated memory is still 138.4 MB. Free memory was 101.8 MB in the beginning and 91.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 108.45 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 91.9 MB in the beginning and 180.6 MB in the end (delta: -88.7 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 321.48 ms. Allocated memory is still 201.9 MB. Free memory was 180.6 MB in the beginning and 164.2 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2212.60 ms. Allocated memory was 201.9 MB in the beginning and 235.4 MB in the end (delta: 33.6 MB). Free memory was 164.2 MB in the beginning and 123.1 MB in the end (delta: 41.0 MB). Peak memory consumption was 74.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: t <= tagbuf_len && 0 <= t - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (1 <= tagbuf_len && t <= tagbuf_len) && 0 <= t - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 47 locations, 1 error locations. Result: SAFE, OverallTime: 2.1s, OverallIterations: 5, TraceHistogramMax: 4, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, HoareTripleCheckerStatistics: 245 SDtfs, 52 SDslu, 520 SDs, 0 SdLazy, 271 SolverSat, 59 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=4, 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, 5 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 24 LocationsWithAnnotation, 59 PreInvPairs, 79 NumberOfFragments, 175 HoareAnnotationTreeSize, 59 FomulaSimplifications, 11 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 24 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 122 ConstructedInterpolants, 0 QuantifiedInterpolants, 7884 SizeOfPredicates, 4 NumberOfNonLiveVariables, 69 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 34/50 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...