/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/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/test17.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 13:29:25,808 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 13:29:25,810 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 13:29:25,827 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 13:29:25,828 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 13:29:25,829 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 13:29:25,831 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 13:29:25,844 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 13:29:25,846 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 13:29:25,847 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 13:29:25,849 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 13:29:25,851 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 13:29:25,851 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 13:29:25,854 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 13:29:25,855 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 13:29:25,857 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 13:29:25,859 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 13:29:25,860 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 13:29:25,864 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 13:29:25,867 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 13:29:25,869 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 13:29:25,870 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 13:29:25,872 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 13:29:25,872 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 13:29:25,875 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 13:29:25,891 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 13:29:25,891 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 13:29:25,892 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 13:29:25,893 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-17 13:29:25,907 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 13:29:25,908 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 13:29:25,909 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 13:29:25,910 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 13:29:25,910 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 13:29:25,910 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 13:29:25,910 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 13:29:25,910 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 13:29:25,910 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 13:29:25,911 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 13:29:25,912 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 13:29:25,912 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 13:29:25,912 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 13:29:25,912 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 13:29:25,913 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 13:29:25,913 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 13:29:25,913 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 13:29:25,913 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 13:29:25,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 13:29:25,914 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 13:29:25,914 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 13:29:25,914 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 13:29:25,914 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-17 13:29:26,168 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 13:29:26,181 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 13:29:26,186 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 13:29:26,187 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 13:29:26,188 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 13:29:26,188 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test17.c [2020-07-17 13:29:26,249 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c619b3308/69de7188c2f84978aa8593cf26ab0828/FLAGd4ca2101b [2020-07-17 13:29:26,608 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 13:29:26,609 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test17.c [2020-07-17 13:29:26,615 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c619b3308/69de7188c2f84978aa8593cf26ab0828/FLAGd4ca2101b [2020-07-17 13:29:26,994 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c619b3308/69de7188c2f84978aa8593cf26ab0828 [2020-07-17 13:29:27,002 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 13:29:27,005 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 13:29:27,006 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 13:29:27,006 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 13:29:27,009 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 13:29:27,010 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 01:29:26" (1/1) ... [2020-07-17 13:29:27,013 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73562313 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:29:27, skipping insertion in model container [2020-07-17 13:29:27,013 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 01:29:26" (1/1) ... [2020-07-17 13:29:27,020 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 13:29:27,040 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 13:29:27,179 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 13:29:27,184 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 13:29:27,197 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 13:29:27,216 INFO L208 MainTranslator]: Completed translation [2020-07-17 13:29:27,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:29:27 WrapperNode [2020-07-17 13:29:27,216 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 13:29:27,217 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 13:29:27,217 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 13:29:27,217 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 13:29:27,226 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:29:27" (1/1) ... [2020-07-17 13:29:27,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:29:27" (1/1) ... [2020-07-17 13:29:27,232 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:29:27" (1/1) ... [2020-07-17 13:29:27,233 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:29:27" (1/1) ... [2020-07-17 13:29:27,329 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:29:27" (1/1) ... [2020-07-17 13:29:27,334 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:29:27" (1/1) ... [2020-07-17 13:29:27,335 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:29:27" (1/1) ... [2020-07-17 13:29:27,336 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 13:29:27,337 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 13:29:27,337 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 13:29:27,337 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 13:29:27,338 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:29:27" (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 [2020-07-17 13:29:27,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 13:29:27,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 13:29:27,410 INFO L138 BoogieDeclarations]: Found implementation of procedure equal [2020-07-17 13:29:27,410 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 13:29:27,410 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 13:29:27,410 INFO L130 BoogieDeclarations]: Found specification of procedure equal [2020-07-17 13:29:27,410 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 13:29:27,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 13:29:27,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-17 13:29:27,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-17 13:29:27,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 13:29:27,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 13:29:27,412 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 13:29:27,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 13:29:27,692 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 13:29:27,692 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-17 13:29:27,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 01:29:27 BoogieIcfgContainer [2020-07-17 13:29:27,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 13:29:27,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 13:29:27,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 13:29:27,700 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 13:29:27,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 01:29:26" (1/3) ... [2020-07-17 13:29:27,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@154e5b93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 01:29:27, skipping insertion in model container [2020-07-17 13:29:27,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:29:27" (2/3) ... [2020-07-17 13:29:27,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@154e5b93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 01:29:27, skipping insertion in model container [2020-07-17 13:29:27,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 01:29:27" (3/3) ... [2020-07-17 13:29:27,703 INFO L109 eAbstractionObserver]: Analyzing ICFG test17.c [2020-07-17 13:29:27,714 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 13:29:27,721 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 13:29:27,736 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 13:29:27,758 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 13:29:27,758 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 13:29:27,758 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-17 13:29:27,758 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 13:29:27,758 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 13:29:27,759 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 13:29:27,759 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 13:29:27,759 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 13:29:27,773 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-07-17 13:29:27,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-17 13:29:27,783 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:29:27,784 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:29:27,785 INFO L427 AbstractCegarLoop]: === Iteration 1 === [equalErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:29:27,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:29:27,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1638328089, now seen corresponding path program 1 times [2020-07-17 13:29:27,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:29:27,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [959347410] [2020-07-17 13:29:27,801 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:29:27,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:29:28,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:29:28,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:29:28,118 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:29:28,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [959347410] [2020-07-17 13:29:28,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:29:28,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-17 13:29:28,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456743063] [2020-07-17 13:29:28,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-17 13:29:28,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:29:28,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-17 13:29:28,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-17 13:29:28,147 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 6 states. [2020-07-17 13:29:28,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:29:28,356 INFO L93 Difference]: Finished difference Result 30 states and 29 transitions. [2020-07-17 13:29:28,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-17 13:29:28,359 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-07-17 13:29:28,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:29:28,368 INFO L225 Difference]: With dead ends: 30 [2020-07-17 13:29:28,368 INFO L226 Difference]: Without dead ends: 0 [2020-07-17 13:29:28,373 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-07-17 13:29:28,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-17 13:29:28,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-17 13:29:28,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-17 13:29:28,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-17 13:29:28,429 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-07-17 13:29:28,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:29:28,430 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-17 13:29:28,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-17 13:29:28,430 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 13:29:28,431 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 13:29:28,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 13:29:28,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-17 13:29:28,890 INFO L264 CegarLoopResult]: At program point equalEXIT(lines 4 12) the Hoare annotation is: (or (not (= |equal_#in~a.base| |equal_#in~b.base|)) (and (= equal_~b.offset equal_~a.offset) (= equal_~a.offset |equal_#in~b.offset|) (= equal_~a.base equal_~b.base) (= equal_~a.base |equal_#in~b.base|)) (not (= |equal_#in~a.offset| |equal_#in~b.offset|))) [2020-07-17 13:29:28,891 INFO L271 CegarLoopResult]: At program point equalENTRY(lines 4 12) the Hoare annotation is: true [2020-07-17 13:29:28,891 INFO L264 CegarLoopResult]: At program point equalFINAL(lines 4 12) the Hoare annotation is: (or (not (= |equal_#in~a.base| |equal_#in~b.base|)) (and (= equal_~b.offset equal_~a.offset) (= equal_~a.offset |equal_#in~b.offset|) (= equal_~a.base equal_~b.base) (= equal_~a.base |equal_#in~b.base|)) (not (= |equal_#in~a.offset| |equal_#in~b.offset|))) [2020-07-17 13:29:28,891 INFO L264 CegarLoopResult]: At program point L6(lines 4 12) the Hoare annotation is: (or (not (= |equal_#in~a.base| |equal_#in~b.base|)) (not (= |equal_#in~a.offset| |equal_#in~b.offset|))) [2020-07-17 13:29:28,892 INFO L264 CegarLoopResult]: At program point L5(lines 5 7) the Hoare annotation is: (or (not (= |equal_#in~a.base| |equal_#in~b.base|)) (and (= equal_~b.offset equal_~a.offset) (= equal_~a.offset |equal_#in~b.offset|) (= equal_~a.base equal_~b.base) (= equal_~a.base |equal_#in~b.base|)) (not (= |equal_#in~a.offset| |equal_#in~b.offset|))) [2020-07-17 13:29:28,892 INFO L264 CegarLoopResult]: At program point equalErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) the Hoare annotation is: (or (not (= |equal_#in~a.base| |equal_#in~b.base|)) (not (= |equal_#in~a.offset| |equal_#in~b.offset|))) [2020-07-17 13:29:28,892 INFO L264 CegarLoopResult]: At program point L4(lines 4 12) the Hoare annotation is: (or (not (= |equal_#in~a.base| |equal_#in~b.base|)) (and (= equal_~a.offset |equal_#in~b.offset|) (= equal_~a.base |equal_#in~b.base|)) (not (= |equal_#in~a.offset| |equal_#in~b.offset|))) [2020-07-17 13:29:28,892 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-17 13:29:28,892 INFO L271 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-07-17 13:29:28,893 INFO L271 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: true [2020-07-17 13:29:28,893 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-17 13:29:28,893 INFO L271 CegarLoopResult]: At program point L14-1(line 14) the Hoare annotation is: true [2020-07-17 13:29:28,893 INFO L271 CegarLoopResult]: At program point L14-2(line 14) the Hoare annotation is: true [2020-07-17 13:29:28,893 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |~#a~0.base| |old(~#a~0.base)|) (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= ~b~0 |old(~b~0)|) (= |old(#length)| |#length|)) [2020-07-17 13:29:28,894 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-07-17 13:29:28,894 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-07-17 13:29:28,894 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-17 13:29:28,894 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-17 13:29:28,894 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-07-17 13:29:28,894 INFO L271 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: true [2020-07-17 13:29:28,895 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 16 19) the Hoare annotation is: true [2020-07-17 13:29:28,895 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 16 19) the Hoare annotation is: true [2020-07-17 13:29:28,895 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 16 19) the Hoare annotation is: true [2020-07-17 13:29:28,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 01:29:28 BoogieIcfgContainer [2020-07-17 13:29:28,915 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 13:29:28,918 INFO L168 Benchmark]: Toolchain (without parser) took 1912.79 ms. Allocated memory was 146.8 MB in the beginning and 232.3 MB in the end (delta: 85.5 MB). Free memory was 104.1 MB in the beginning and 191.3 MB in the end (delta: -87.2 MB). Peak memory consumption was 73.6 MB. Max. memory is 7.1 GB. [2020-07-17 13:29:28,919 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 146.8 MB. Free memory was 122.2 MB in the beginning and 121.9 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-17 13:29:28,920 INFO L168 Benchmark]: CACSL2BoogieTranslator took 210.46 ms. Allocated memory is still 146.8 MB. Free memory was 103.7 MB in the beginning and 94.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-07-17 13:29:28,921 INFO L168 Benchmark]: Boogie Preprocessor took 119.64 ms. Allocated memory was 146.8 MB in the beginning and 205.0 MB in the end (delta: 58.2 MB). Free memory was 94.4 MB in the beginning and 184.1 MB in the end (delta: -89.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-07-17 13:29:28,922 INFO L168 Benchmark]: RCFGBuilder took 358.39 ms. Allocated memory is still 205.0 MB. Free memory was 184.1 MB in the beginning and 170.8 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2020-07-17 13:29:28,923 INFO L168 Benchmark]: TraceAbstraction took 1218.77 ms. Allocated memory was 205.0 MB in the beginning and 232.3 MB in the end (delta: 27.3 MB). Free memory was 170.8 MB in the beginning and 191.3 MB in the end (delta: -20.5 MB). Peak memory consumption was 82.2 MB. Max. memory is 7.1 GB. [2020-07-17 13:29:28,928 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 146.8 MB. Free memory was 122.2 MB in the beginning and 121.9 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 210.46 ms. Allocated memory is still 146.8 MB. Free memory was 103.7 MB in the beginning and 94.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.64 ms. Allocated memory was 146.8 MB in the beginning and 205.0 MB in the end (delta: 58.2 MB). Free memory was 94.4 MB in the beginning and 184.1 MB in the end (delta: -89.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 358.39 ms. Allocated memory is still 205.0 MB. Free memory was 184.1 MB in the beginning and 170.8 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1218.77 ms. Allocated memory was 205.0 MB in the beginning and 232.3 MB in the end (delta: 27.3 MB). Free memory was 170.8 MB in the beginning and 191.3 MB in the end (delta: -20.5 MB). Peak memory consumption was 82.2 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 4]: Loop Invariant Derived loop invariant: !(a == b) || !(a == b) - ProcedureContractResult [Line: 4]: Procedure Contract for equal Derived contract for procedure equal: (!(a == b) || (((b == a && a == b) && a == b) && a == b)) || !(a == b) - ProcedureContractResult [Line: 16]: Procedure Contract for main Derived contract for procedure main: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 16 SDtfs, 15 SDslu, 41 SDs, 0 SdLazy, 21 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 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, 23 LocationsWithAnnotation, 23 PreInvPairs, 30 NumberOfFragments, 138 HoareAnnotationTreeSize, 23 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 23 FomulaSimplificationsInter, 228 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...