/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/afterrec_2calls-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-89f541c [2020-08-27 21:48:10,236 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-08-27 21:48:10,285 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-27 21:48:10,296 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-27 21:48:10,298 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-27 21:48:10,303 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-27 21:48:10,306 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-27 21:48:10,310 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-27 21:48:10,311 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-27 21:48:10,312 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-27 21:48:10,313 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-27 21:48:10,316 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-27 21:48:10,319 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-27 21:48:10,321 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-27 21:48:10,322 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-27 21:48:10,324 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-27 21:48:10,326 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-27 21:48:10,335 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-27 21:48:10,336 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-27 21:48:10,338 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-27 21:48:10,340 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-27 21:48:10,341 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-27 21:48:10,344 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-27 21:48:10,356 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-27 21:48:10,357 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-27 21:48:10,359 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-27 21:48:10,359 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-27 21:48:10,407 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-27 21:48:10,407 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-27 21:48:10,410 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-27 21:48:10,410 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-27 21:48:10,410 INFO L138 SettingsManager]: * Use SBE=true [2020-08-27 21:48:10,410 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-27 21:48:10,411 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-27 21:48:10,411 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-27 21:48:10,411 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-27 21:48:10,411 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-27 21:48:10,413 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-27 21:48:10,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-27 21:48:10,413 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-27 21:48:10,414 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-27 21:48:10,414 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-27 21:48:10,414 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-27 21:48:10,414 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-27 21:48:10,414 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-27 21:48:10,415 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-27 21:48:10,415 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-27 21:48:10,415 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-27 21:48:10,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-27 21:48:10,415 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-27 21:48:10,416 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-27 21:48:10,416 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-27 21:48:10,416 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-27 21:48:10,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-27 21:48:10,416 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-27 21:48:10,417 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-27 21:48:10,417 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-08-27 21:48:10,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-27 21:48:10,887 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-27 21:48:10,891 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-27 21:48:10,892 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-27 21:48:10,893 INFO L275 PluginConnector]: CDTParser initialized [2020-08-27 21:48:10,894 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/afterrec_2calls-2.c [2020-08-27 21:48:10,972 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/86896cd87/8881ce2052b3408f85fa79537b0eebb6/FLAGafcd0e7a6 [2020-08-27 21:48:11,552 INFO L306 CDTParser]: Found 1 translation units. [2020-08-27 21:48:11,553 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/afterrec_2calls-2.c [2020-08-27 21:48:11,562 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/86896cd87/8881ce2052b3408f85fa79537b0eebb6/FLAGafcd0e7a6 [2020-08-27 21:48:11,886 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/86896cd87/8881ce2052b3408f85fa79537b0eebb6 [2020-08-27 21:48:11,898 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-27 21:48:11,901 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-27 21:48:11,902 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-27 21:48:11,902 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-27 21:48:11,906 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-27 21:48:11,908 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:48:11" (1/1) ... [2020-08-27 21:48:11,912 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f80c2a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:48:11, skipping insertion in model container [2020-08-27 21:48:11,912 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:48:11" (1/1) ... [2020-08-27 21:48:11,920 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-27 21:48:11,942 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-27 21:48:12,143 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:48:12,147 INFO L203 MainTranslator]: Completed pre-run [2020-08-27 21:48:12,162 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:48:12,177 INFO L208 MainTranslator]: Completed translation [2020-08-27 21:48:12,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:48:12 WrapperNode [2020-08-27 21:48:12,178 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-27 21:48:12,179 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-27 21:48:12,179 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-27 21:48:12,179 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-27 21:48:12,193 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:48:12" (1/1) ... [2020-08-27 21:48:12,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:48:12" (1/1) ... [2020-08-27 21:48:12,282 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:48:12" (1/1) ... [2020-08-27 21:48:12,283 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:48:12" (1/1) ... [2020-08-27 21:48:12,289 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:48:12" (1/1) ... [2020-08-27 21:48:12,294 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:48:12" (1/1) ... [2020-08-27 21:48:12,295 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:48:12" (1/1) ... [2020-08-27 21:48:12,297 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-27 21:48:12,297 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-27 21:48:12,297 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-27 21:48:12,297 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-27 21:48:12,304 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:48:12" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-27 21:48:12,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-27 21:48:12,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-27 21:48:12,379 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-08-27 21:48:12,379 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2020-08-27 21:48:12,380 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-27 21:48:12,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-27 21:48:12,380 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-08-27 21:48:12,380 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2020-08-27 21:48:12,380 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-27 21:48:12,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-27 21:48:12,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-27 21:48:12,581 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-27 21:48:12,581 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-27 21:48:12,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:48:12 BoogieIcfgContainer [2020-08-27 21:48:12,586 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-27 21:48:12,587 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-27 21:48:12,587 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-27 21:48:12,591 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-27 21:48:12,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 09:48:11" (1/3) ... [2020-08-27 21:48:12,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d223774 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:48:12, skipping insertion in model container [2020-08-27 21:48:12,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:48:12" (2/3) ... [2020-08-27 21:48:12,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d223774 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:48:12, skipping insertion in model container [2020-08-27 21:48:12,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:48:12" (3/3) ... [2020-08-27 21:48:12,595 INFO L109 eAbstractionObserver]: Analyzing ICFG afterrec_2calls-2.c [2020-08-27 21:48:12,604 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-27 21:48:12,613 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-08-27 21:48:12,633 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-08-27 21:48:12,661 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-27 21:48:12,661 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-27 21:48:12,661 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-27 21:48:12,661 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-27 21:48:12,661 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-27 21:48:12,662 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-27 21:48:12,662 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-27 21:48:12,662 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-27 21:48:12,683 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-08-27 21:48:12,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-27 21:48:12,689 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:48:12,691 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:48:12,691 INFO L427 AbstractCegarLoop]: === Iteration 1 === [fErr0ASSERT_VIOLATIONERROR_FUNCTION, f2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:48:12,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:48:12,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1662209305, now seen corresponding path program 1 times [2020-08-27 21:48:12,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:48:12,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [639802316] [2020-08-27 21:48:12,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:48:12,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:48:12,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:48:12,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:48:12,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-27 21:48:12,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:48:13,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:48:13,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [639802316] [2020-08-27 21:48:13,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:48:13,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-27 21:48:13,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843242174] [2020-08-27 21:48:13,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-27 21:48:13,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:48:13,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-27 21:48:13,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-27 21:48:13,044 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 4 states. [2020-08-27 21:48:13,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:48:13,110 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2020-08-27 21:48:13,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-27 21:48:13,112 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-08-27 21:48:13,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:48:13,121 INFO L225 Difference]: With dead ends: 31 [2020-08-27 21:48:13,121 INFO L226 Difference]: Without dead ends: 0 [2020-08-27 21:48:13,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-27 21:48:13,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-27 21:48:13,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-27 21:48:13,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-27 21:48:13,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-27 21:48:13,159 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-08-27 21:48:13,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:48:13,160 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-27 21:48:13,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-27 21:48:13,160 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-27 21:48:13,160 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-27 21:48:13,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-27 21:48:13,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-27 21:48:13,214 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-27 21:48:13,215 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-27 21:48:13,215 INFO L268 CegarLoopResult]: For program point fErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2020-08-27 21:48:13,215 INFO L264 CegarLoopResult]: At program point L9(line 9) the Hoare annotation is: (not (<= |f_#in~n| 2)) [2020-08-27 21:48:13,216 INFO L268 CegarLoopResult]: For program point L9-1(lines 6 11) no Hoare annotation was computed. [2020-08-27 21:48:13,216 INFO L268 CegarLoopResult]: For program point fEXIT(lines 6 11) no Hoare annotation was computed. [2020-08-27 21:48:13,216 INFO L268 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-08-27 21:48:13,216 INFO L271 CegarLoopResult]: At program point fENTRY(lines 6 11) the Hoare annotation is: true [2020-08-27 21:48:13,216 INFO L268 CegarLoopResult]: For program point fFINAL(lines 6 11) no Hoare annotation was computed. [2020-08-27 21:48:13,217 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-27 21:48:13,217 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-27 21:48:13,217 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-27 21:48:13,217 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-27 21:48:13,217 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 20 22) the Hoare annotation is: true [2020-08-27 21:48:13,218 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 20 22) no Hoare annotation was computed. [2020-08-27 21:48:13,218 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 20 22) no Hoare annotation was computed. [2020-08-27 21:48:13,218 INFO L271 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: true [2020-08-27 21:48:13,218 INFO L268 CegarLoopResult]: For program point f2EXIT(lines 13 18) no Hoare annotation was computed. [2020-08-27 21:48:13,218 INFO L268 CegarLoopResult]: For program point L16-1(lines 13 18) no Hoare annotation was computed. [2020-08-27 21:48:13,219 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-08-27 21:48:13,219 INFO L271 CegarLoopResult]: At program point f2ENTRY(lines 13 18) the Hoare annotation is: true [2020-08-27 21:48:13,219 INFO L268 CegarLoopResult]: For program point f2FINAL(lines 13 18) no Hoare annotation was computed. [2020-08-27 21:48:13,219 INFO L268 CegarLoopResult]: For program point f2Err0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-08-27 21:48:13,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 09:48:13 BoogieIcfgContainer [2020-08-27 21:48:13,227 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-27 21:48:13,231 INFO L168 Benchmark]: Toolchain (without parser) took 1329.24 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 102.9 MB in the beginning and 146.3 MB in the end (delta: -43.4 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2020-08-27 21:48:13,232 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-27 21:48:13,233 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.64 ms. Allocated memory is still 141.0 MB. Free memory was 102.7 MB in the beginning and 93.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-08-27 21:48:13,234 INFO L168 Benchmark]: Boogie Preprocessor took 118.11 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 93.2 MB in the beginning and 184.2 MB in the end (delta: -91.0 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-08-27 21:48:13,235 INFO L168 Benchmark]: RCFGBuilder took 288.77 ms. Allocated memory is still 205.0 MB. Free memory was 184.2 MB in the beginning and 172.1 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. [2020-08-27 21:48:13,236 INFO L168 Benchmark]: TraceAbstraction took 640.01 ms. Allocated memory is still 205.0 MB. Free memory was 171.5 MB in the beginning and 146.3 MB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. [2020-08-27 21:48:13,241 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 276.64 ms. Allocated memory is still 141.0 MB. Free memory was 102.7 MB in the beginning and 93.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.11 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 93.2 MB in the beginning and 184.2 MB in the end (delta: -91.0 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 288.77 ms. Allocated memory is still 205.0 MB. Free memory was 184.2 MB in the beginning and 172.1 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 640.01 ms. Allocated memory is still 205.0 MB. Free memory was 171.5 MB in the beginning and 146.3 MB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 10]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 23 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 9 SDtfs, 5 SDslu, 15 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 10 PreInvPairs, 10 NumberOfFragments, 11 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 192 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...