/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/loop-invgen/id_build.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 06:55:59,003 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 06:55:59,008 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 06:55:59,051 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 06:55:59,052 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 06:55:59,054 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 06:55:59,056 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 06:55:59,058 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 06:55:59,061 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 06:55:59,062 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 06:55:59,064 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 06:55:59,065 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 06:55:59,066 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 06:55:59,067 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 06:55:59,069 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 06:55:59,070 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 06:55:59,071 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 06:55:59,073 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 06:55:59,075 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 06:55:59,078 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 06:55:59,080 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 06:55:59,082 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 06:55:59,083 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 06:55:59,085 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 06:55:59,100 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 06:55:59,107 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 06:55:59,111 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 06:55:59,112 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 06:55:59,116 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 06:55:59,117 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 06:55:59,117 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 06:55:59,119 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 06:55:59,119 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 06:55:59,120 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 06:55:59,125 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 06:55:59,126 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 06:55:59,128 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 06:55:59,181 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 06:55:59,181 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 06:55:59,183 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 06:55:59,184 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 06:55:59,184 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 06:55:59,184 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 06:55:59,184 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 06:55:59,184 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 06:55:59,185 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 06:55:59,185 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 06:55:59,186 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 06:55:59,186 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 06:55:59,186 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 06:55:59,187 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 06:55:59,187 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 06:55:59,187 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 06:55:59,187 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 06:55:59,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 06:55:59,188 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 06:55:59,188 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 06:55:59,188 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 06:55:59,188 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 06:55:59,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 06:55:59,189 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 06:55:59,189 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 06:55:59,189 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 06:55:59,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 06:55:59,649 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 06:55:59,652 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 06:55:59,653 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 06:55:59,654 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 06:55:59,655 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/id_build.i.v+lhb-reducer.c [2020-12-23 06:55:59,753 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/c69e5c9b9/1d6a5bff32df42c4a4dbfc6ca27cb7f2/FLAG0bd3bd473 [2020-12-23 06:56:00,440 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 06:56:00,441 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/loop-invgen/id_build.i.v+lhb-reducer.c [2020-12-23 06:56:00,450 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/c69e5c9b9/1d6a5bff32df42c4a4dbfc6ca27cb7f2/FLAG0bd3bd473 [2020-12-23 06:56:00,809 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/c69e5c9b9/1d6a5bff32df42c4a4dbfc6ca27cb7f2 [2020-12-23 06:56:00,813 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 06:56:00,816 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 06:56:00,818 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 06:56:00,818 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 06:56:00,822 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 06:56:00,823 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:56:00" (1/1) ... [2020-12-23 06:56:00,825 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@570e446e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:56:00, skipping insertion in model container [2020-12-23 06:56:00,825 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:56:00" (1/1) ... [2020-12-23 06:56:00,839 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 06:56:00,866 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~main__nlen~0,] left hand side expression in assignment: lhs: VariableLHS[~main__i~0,] left hand side expression in assignment: lhs: VariableLHS[~main__j~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_1~0,] left hand side expression in assignment: lhs: VariableLHS[~__VERIFIER_assert__cond~0,] [2020-12-23 06:56:01,143 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/loop-invgen/id_build.i.v+lhb-reducer.c[854,867] left hand side expression in assignment: lhs: VariableLHS[~__tmp_2~0,] left hand side expression in assignment: lhs: VariableLHS[~__VERIFIER_assert__cond~1,] [2020-12-23 06:56:01,156 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/loop-invgen/id_build.i.v+lhb-reducer.c[1096,1109] left hand side expression in assignment: lhs: VariableLHS[~main__j~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_3~0,] left hand side expression in assignment: lhs: VariableLHS[~__VERIFIER_assert__cond~2,] [2020-12-23 06:56:01,165 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/loop-invgen/id_build.i.v+lhb-reducer.c[1375,1388] left hand side expression in assignment: lhs: VariableLHS[~main__i~0,] left hand side expression in assignment: lhs: VariableLHS[~main__j~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_100~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i~0,] [2020-12-23 06:56:01,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 06:56:01,193 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~main__nlen~0,] left hand side expression in assignment: lhs: VariableLHS[~main__i~0,] left hand side expression in assignment: lhs: VariableLHS[~main__j~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_1~0,] left hand side expression in assignment: lhs: VariableLHS[~__VERIFIER_assert__cond~0,] [2020-12-23 06:56:01,226 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/loop-invgen/id_build.i.v+lhb-reducer.c[854,867] left hand side expression in assignment: lhs: VariableLHS[~__tmp_2~0,] left hand side expression in assignment: lhs: VariableLHS[~__VERIFIER_assert__cond~1,] [2020-12-23 06:56:01,231 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/loop-invgen/id_build.i.v+lhb-reducer.c[1096,1109] left hand side expression in assignment: lhs: VariableLHS[~main__j~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_3~0,] left hand side expression in assignment: lhs: VariableLHS[~__VERIFIER_assert__cond~2,] [2020-12-23 06:56:01,236 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/loop-invgen/id_build.i.v+lhb-reducer.c[1375,1388] left hand side expression in assignment: lhs: VariableLHS[~main__i~0,] left hand side expression in assignment: lhs: VariableLHS[~main__j~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_100~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i~0,] [2020-12-23 06:56:01,251 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 06:56:01,271 INFO L208 MainTranslator]: Completed translation [2020-12-23 06:56:01,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:56:01 WrapperNode [2020-12-23 06:56:01,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 06:56:01,275 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 06:56:01,276 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 06:56:01,276 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 06:56:01,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:56:01" (1/1) ... [2020-12-23 06:56:01,299 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:56:01" (1/1) ... [2020-12-23 06:56:01,329 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 06:56:01,331 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 06:56:01,331 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 06:56:01,331 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 06:56:01,340 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:56:01" (1/1) ... [2020-12-23 06:56:01,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:56:01" (1/1) ... [2020-12-23 06:56:01,353 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:56:01" (1/1) ... [2020-12-23 06:56:01,353 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:56:01" (1/1) ... [2020-12-23 06:56:01,364 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:56:01" (1/1) ... [2020-12-23 06:56:01,370 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:56:01" (1/1) ... [2020-12-23 06:56:01,371 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:56:01" (1/1) ... [2020-12-23 06:56:01,377 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 06:56:01,378 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 06:56:01,379 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 06:56:01,379 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 06:56:01,380 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:56:01" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 06:56:01,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 06:56:01,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 06:56:01,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 06:56:01,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 06:56:01,859 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 06:56:01,859 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-23 06:56:01,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:56:01 BoogieIcfgContainer [2020-12-23 06:56:01,861 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 06:56:01,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 06:56:01,863 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 06:56:01,866 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 06:56:01,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 06:56:00" (1/3) ... [2020-12-23 06:56:01,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@679c65bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:56:01, skipping insertion in model container [2020-12-23 06:56:01,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:56:01" (2/3) ... [2020-12-23 06:56:01,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@679c65bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:56:01, skipping insertion in model container [2020-12-23 06:56:01,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:56:01" (3/3) ... [2020-12-23 06:56:01,870 INFO L111 eAbstractionObserver]: Analyzing ICFG id_build.i.v+lhb-reducer.c [2020-12-23 06:56:01,877 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 06:56:01,882 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-12-23 06:56:01,902 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-23 06:56:01,955 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 06:56:01,960 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 06:56:01,960 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 06:56:01,961 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 06:56:01,961 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 06:56:01,961 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 06:56:01,962 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 06:56:01,962 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 06:56:02,008 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-12-23 06:56:02,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-23 06:56:02,024 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:56:02,025 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-23 06:56:02,025 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:56:02,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:56:02,042 INFO L82 PathProgramCache]: Analyzing trace with hash 889538503, now seen corresponding path program 1 times [2020-12-23 06:56:02,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:56:02,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474910971] [2020-12-23 06:56:02,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:56:02,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:56:02,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:56:02,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474910971] [2020-12-23 06:56:02,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:56:02,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 06:56:02,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431282157] [2020-12-23 06:56:02,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 06:56:02,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:56:02,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 06:56:02,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 06:56:02,367 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 4 states. [2020-12-23 06:56:02,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:56:02,424 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2020-12-23 06:56:02,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 06:56:02,426 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-23 06:56:02,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:56:02,436 INFO L225 Difference]: With dead ends: 25 [2020-12-23 06:56:02,436 INFO L226 Difference]: Without dead ends: 14 [2020-12-23 06:56:02,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 06:56:02,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-12-23 06:56:02,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-12-23 06:56:02,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-12-23 06:56:02,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2020-12-23 06:56:02,479 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 6 [2020-12-23 06:56:02,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:56:02,480 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2020-12-23 06:56:02,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 06:56:02,480 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-12-23 06:56:02,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 06:56:02,481 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:56:02,481 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:56:02,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 06:56:02,481 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:56:02,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:56:02,483 INFO L82 PathProgramCache]: Analyzing trace with hash 148134121, now seen corresponding path program 1 times [2020-12-23 06:56:02,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:56:02,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662552754] [2020-12-23 06:56:02,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:56:02,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:56:02,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:56:02,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662552754] [2020-12-23 06:56:02,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:56:02,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 06:56:02,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645194276] [2020-12-23 06:56:02,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 06:56:02,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:56:02,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 06:56:02,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 06:56:02,553 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 4 states. [2020-12-23 06:56:02,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:56:02,589 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2020-12-23 06:56:02,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 06:56:02,590 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-23 06:56:02,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:56:02,591 INFO L225 Difference]: With dead ends: 15 [2020-12-23 06:56:02,591 INFO L226 Difference]: Without dead ends: 13 [2020-12-23 06:56:02,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 06:56:02,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-12-23 06:56:02,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2020-12-23 06:56:02,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-12-23 06:56:02,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2020-12-23 06:56:02,597 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 8 [2020-12-23 06:56:02,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:56:02,597 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2020-12-23 06:56:02,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 06:56:02,598 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2020-12-23 06:56:02,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 06:56:02,598 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:56:02,599 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:56:02,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 06:56:02,599 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:56:02,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:56:02,601 INFO L82 PathProgramCache]: Analyzing trace with hash 623096429, now seen corresponding path program 1 times [2020-12-23 06:56:02,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:56:02,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454905944] [2020-12-23 06:56:02,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:56:02,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:56:02,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:56:02,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454905944] [2020-12-23 06:56:02,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:56:02,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 06:56:02,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919720128] [2020-12-23 06:56:02,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 06:56:02,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:56:02,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 06:56:02,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 06:56:02,702 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 5 states. [2020-12-23 06:56:02,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:56:02,809 INFO L93 Difference]: Finished difference Result 21 states and 27 transitions. [2020-12-23 06:56:02,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 06:56:02,810 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-23 06:56:02,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:56:02,811 INFO L225 Difference]: With dead ends: 21 [2020-12-23 06:56:02,811 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 06:56:02,812 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 06:56:02,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 06:56:02,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 06:56:02,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 06:56:02,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 06:56:02,813 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-12-23 06:56:02,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:56:02,813 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 06:56:02,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 06:56:02,814 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 06:56:02,814 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 06:56:02,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 06:56:02,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-23 06:56:02,933 INFO L189 CegarLoopUtils]: For program point L33(lines 33 89) no Hoare annotation was computed. [2020-12-23 06:56:02,934 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-23 06:56:02,934 INFO L189 CegarLoopUtils]: For program point L64(line 64) no Hoare annotation was computed. [2020-12-23 06:56:02,934 INFO L185 CegarLoopUtils]: At program point L95(lines 14 102) the Hoare annotation is: (< 0 (+ ULTIMATE.start_main_~main__i~0 1)) [2020-12-23 06:56:02,934 INFO L189 CegarLoopUtils]: For program point L62(lines 62 70) no Hoare annotation was computed. [2020-12-23 06:56:02,935 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 48) no Hoare annotation was computed. [2020-12-23 06:56:02,935 INFO L189 CegarLoopUtils]: For program point L48(line 48) no Hoare annotation was computed. [2020-12-23 06:56:02,935 INFO L185 CegarLoopUtils]: At program point L79(lines 52 87) the Hoare annotation is: (and (< 0 (+ ULTIMATE.start_main_~main__i~0 1)) (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~0 0)) (< ULTIMATE.start_main_~main__i~0 ULTIMATE.start_main_~main__nlen~0) (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~1 0))) [2020-12-23 06:56:02,935 INFO L189 CegarLoopUtils]: For program point L46(lines 46 87) no Hoare annotation was computed. [2020-12-23 06:56:02,936 INFO L185 CegarLoopUtils]: At program point L69(lines 39 89) the Hoare annotation is: (let ((.cse0 (< 0 (+ ULTIMATE.start_main_~main__i~0 1))) (.cse1 (< ULTIMATE.start_main_~main__i~0 ULTIMATE.start_main_~main__nlen~0))) (or (and .cse0 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~0 0)) (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~2 0)) .cse1) (and .cse0 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~0 1) .cse1))) [2020-12-23 06:56:02,936 INFO L192 CegarLoopUtils]: At program point L100(lines 13 102) the Hoare annotation is: true [2020-12-23 06:56:02,936 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-23 06:56:02,936 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-23 06:56:02,937 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-23 06:56:02,937 INFO L189 CegarLoopUtils]: For program point L26(lines 26 96) no Hoare annotation was computed. [2020-12-23 06:56:02,937 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 35) no Hoare annotation was computed. [2020-12-23 06:56:02,937 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 64) no Hoare annotation was computed. [2020-12-23 06:56:02,937 INFO L189 CegarLoopUtils]: For program point L76(lines 76 85) no Hoare annotation was computed. [2020-12-23 06:56:02,938 INFO L189 CegarLoopUtils]: For program point L35(line 35) no Hoare annotation was computed. [2020-12-23 06:56:02,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 06:56:02 BoogieIcfgContainer [2020-12-23 06:56:02,959 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 06:56:02,960 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 06:56:02,960 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 06:56:02,961 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 06:56:02,961 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:56:01" (3/4) ... [2020-12-23 06:56:02,965 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 06:56:02,978 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-12-23 06:56:02,978 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-23 06:56:02,978 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 06:56:02,979 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 06:56:03,035 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/loop-invgen/id_build.i.v+lhb-reducer.c-witness.graphml [2020-12-23 06:56:03,036 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 06:56:03,038 INFO L168 Benchmark]: Toolchain (without parser) took 2221.66 ms. Allocated memory is still 159.4 MB. Free memory was 134.1 MB in the beginning and 79.1 MB in the end (delta: 55.0 MB). Peak memory consumption was 55.8 MB. Max. memory is 8.0 GB. [2020-12-23 06:56:03,039 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 159.4 MB. Free memory is still 132.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 06:56:03,039 INFO L168 Benchmark]: CACSL2BoogieTranslator took 456.61 ms. Allocated memory is still 159.4 MB. Free memory was 133.9 MB in the beginning and 123.6 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-23 06:56:03,040 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.65 ms. Allocated memory is still 159.4 MB. Free memory was 123.4 MB in the beginning and 122.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 06:56:03,041 INFO L168 Benchmark]: Boogie Preprocessor took 47.00 ms. Allocated memory is still 159.4 MB. Free memory was 122.0 MB in the beginning and 121.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 06:56:03,041 INFO L168 Benchmark]: RCFGBuilder took 482.85 ms. Allocated memory is still 159.4 MB. Free memory was 121.0 MB in the beginning and 107.9 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-12-23 06:56:03,042 INFO L168 Benchmark]: TraceAbstraction took 1096.73 ms. Allocated memory is still 159.4 MB. Free memory was 107.4 MB in the beginning and 81.7 MB in the end (delta: 25.6 MB). Peak memory consumption was 26.4 MB. Max. memory is 8.0 GB. [2020-12-23 06:56:03,043 INFO L168 Benchmark]: Witness Printer took 75.60 ms. Allocated memory is still 159.4 MB. Free memory was 81.7 MB in the beginning and 79.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 06:56:03,047 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 159.4 MB. Free memory is still 132.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 456.61 ms. Allocated memory is still 159.4 MB. Free memory was 133.9 MB in the beginning and 123.6 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 54.65 ms. Allocated memory is still 159.4 MB. Free memory was 123.4 MB in the beginning and 122.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 47.00 ms. Allocated memory is still 159.4 MB. Free memory was 122.0 MB in the beginning and 121.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 482.85 ms. Allocated memory is still 159.4 MB. Free memory was 121.0 MB in the beginning and 107.9 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1096.73 ms. Allocated memory is still 159.4 MB. Free memory was 107.4 MB in the beginning and 81.7 MB in the end (delta: 25.6 MB). Peak memory consumption was 26.4 MB. Max. memory is 8.0 GB. * Witness Printer took 75.60 ms. Allocated memory is still 159.4 MB. Free memory was 81.7 MB in the beginning and 79.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 48]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 35]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 64]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 0 < main__i + 1 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: ((0 < main__i + 1 && !(__VERIFIER_assert__cond == 0)) && main__i < main__nlen) && !(__VERIFIER_assert__cond == 0) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: (((0 < main__i + 1 && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && main__i < main__nlen) || ((0 < main__i + 1 && __VERIFIER_assert__cond == 1) && main__i < main__nlen) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.8s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 29 SDtfs, 53 SDslu, 20 SDs, 0 SdLazy, 57 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 11 NumberOfFragments, 53 HoareAnnotationTreeSize, 4 FomulaSimplifications, 138 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 44 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 610 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...