./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/test14.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-regression/test14.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0ece3b781ca9ff96a4c645cda94cebcb70795c1b ............................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-8bd4bc6 [2020-07-28 17:58:32,089 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 17:58:32,091 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 17:58:32,103 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 17:58:32,103 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 17:58:32,105 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 17:58:32,106 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 17:58:32,108 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 17:58:32,110 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 17:58:32,111 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 17:58:32,116 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 17:58:32,119 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 17:58:32,119 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 17:58:32,120 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 17:58:32,121 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 17:58:32,124 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 17:58:32,125 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 17:58:32,126 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 17:58:32,128 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 17:58:32,130 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 17:58:32,132 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 17:58:32,133 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 17:58:32,134 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 17:58:32,135 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 17:58:32,137 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 17:58:32,138 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 17:58:32,138 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 17:58:32,139 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 17:58:32,139 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 17:58:32,140 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 17:58:32,140 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 17:58:32,141 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 17:58:32,142 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 17:58:32,143 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 17:58:32,144 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 17:58:32,144 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 17:58:32,145 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 17:58:32,145 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 17:58:32,145 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 17:58:32,146 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 17:58:32,147 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 17:58:32,148 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-28 17:58:32,162 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 17:58:32,163 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 17:58:32,164 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 17:58:32,164 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 17:58:32,164 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 17:58:32,165 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 17:58:32,165 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 17:58:32,165 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-28 17:58:32,165 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 17:58:32,165 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 17:58:32,166 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 17:58:32,166 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 17:58:32,166 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 17:58:32,166 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 17:58:32,166 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 17:58:32,167 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 17:58:32,167 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 17:58:32,167 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 17:58:32,167 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 17:58:32,168 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 17:58:32,168 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 17:58:32,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 17:58:32,168 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 17:58:32,168 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 17:58:32,169 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 17:58:32,169 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-28 17:58:32,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-28 17:58:32,169 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 17:58:32,169 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 17:58:32,170 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0ece3b781ca9ff96a4c645cda94cebcb70795c1b [2020-07-28 17:58:32,476 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 17:58:32,493 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 17:58:32,497 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 17:58:32,498 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 17:58:32,499 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 17:58:32,500 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test14.c [2020-07-28 17:58:32,579 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/543469bbf/555a53c45b3e421b99958d507e9d5b86/FLAG6efaf21ed [2020-07-28 17:58:33,050 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 17:58:33,051 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test14.c [2020-07-28 17:58:33,058 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/543469bbf/555a53c45b3e421b99958d507e9d5b86/FLAG6efaf21ed [2020-07-28 17:58:33,442 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/543469bbf/555a53c45b3e421b99958d507e9d5b86 [2020-07-28 17:58:33,446 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 17:58:33,449 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 17:58:33,451 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 17:58:33,451 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 17:58:33,455 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 17:58:33,456 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:58:33" (1/1) ... [2020-07-28 17:58:33,460 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9bfa321 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:33, skipping insertion in model container [2020-07-28 17:58:33,460 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:58:33" (1/1) ... [2020-07-28 17:58:33,468 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 17:58:33,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 17:58:33,672 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:58:33,685 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 17:58:33,704 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:58:33,720 INFO L208 MainTranslator]: Completed translation [2020-07-28 17:58:33,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:33 WrapperNode [2020-07-28 17:58:33,721 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 17:58:33,721 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 17:58:33,721 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 17:58:33,722 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 17:58:33,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:33" (1/1) ... [2020-07-28 17:58:33,789 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:33" (1/1) ... [2020-07-28 17:58:33,812 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 17:58:33,812 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 17:58:33,813 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 17:58:33,813 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 17:58:33,820 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:33" (1/1) ... [2020-07-28 17:58:33,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:33" (1/1) ... [2020-07-28 17:58:33,822 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:33" (1/1) ... [2020-07-28 17:58:33,822 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:33" (1/1) ... [2020-07-28 17:58:33,828 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:33" (1/1) ... [2020-07-28 17:58:33,831 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:33" (1/1) ... [2020-07-28 17:58:33,832 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:33" (1/1) ... [2020-07-28 17:58:33,834 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 17:58:33,835 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 17:58:33,835 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 17:58:33,835 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 17:58:33,836 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:33" (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 [2020-07-28 17:58:33,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 17:58:33,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 17:58:33,901 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-28 17:58:33,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-28 17:58:33,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-28 17:58:33,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-28 17:58:34,204 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 17:58:34,205 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-07-28 17:58:34,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:58:34 BoogieIcfgContainer [2020-07-28 17:58:34,209 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 17:58:34,210 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 17:58:34,210 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 17:58:34,213 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 17:58:34,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 05:58:33" (1/3) ... [2020-07-28 17:58:34,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4211ea40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:58:34, skipping insertion in model container [2020-07-28 17:58:34,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:33" (2/3) ... [2020-07-28 17:58:34,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4211ea40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:58:34, skipping insertion in model container [2020-07-28 17:58:34,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:58:34" (3/3) ... [2020-07-28 17:58:34,217 INFO L109 eAbstractionObserver]: Analyzing ICFG test14.c [2020-07-28 17:58:34,228 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 17:58:34,236 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 17:58:34,257 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 17:58:34,289 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 17:58:34,290 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 17:58:34,290 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 17:58:34,290 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 17:58:34,290 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 17:58:34,290 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 17:58:34,291 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 17:58:34,291 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 17:58:34,311 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-07-28 17:58:34,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-07-28 17:58:34,318 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:58:34,319 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 17:58:34,320 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:58:34,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:58:34,327 INFO L82 PathProgramCache]: Analyzing trace with hash 119352366, now seen corresponding path program 1 times [2020-07-28 17:58:34,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 17:58:34,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094542673] [2020-07-28 17:58:34,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 17:58:34,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:58:34,566 INFO L280 TraceCheckUtils]: 0: Hoare triple {17#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call ~#a~0.base, ~#a~0.offset := #Ultimate.allocOnStack(4);call write~init~int(0, ~#a~0.base, ~#a~0.offset, 4);call ~#b~0.base, ~#b~0.offset := #Ultimate.allocOnStack(4);call write~init~int(0, ~#b~0.base, ~#b~0.offset, 4); {17#true} is VALID [2020-07-28 17:58:34,568 INFO L280 TraceCheckUtils]: 1: Hoare triple {17#true} havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4.base, main_#t~ret4.offset, main_#t~mem5, main_#t~mem6, main_#t~short7, main_#t~short8, main_~a~1, main_~b~1, main_~#c~0.base, main_~#c~0.offset, main_~pa~0.base, main_~pa~0.offset, main_~pb~0.base, main_~pb~0.offset, main_~pc~0.base, main_~pc~0.offset;havoc main_~a~1;havoc main_~b~1;call main_~#c~0.base, main_~#c~0.offset := #Ultimate.allocOnStack(4);call write~init~int(5, main_~#c~0.base, main_~#c~0.offset, 4);assume -2147483648 <= main_#t~nondet2 && main_#t~nondet2 <= 2147483647;main_~a~1 := main_#t~nondet2;havoc main_#t~nondet2;assume -2147483648 <= main_#t~nondet3 && main_#t~nondet3 <= 2147483647;main_~b~1 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~pa~0.base, main_~pa~0.offset;havoc main_~pb~0.base, main_~pb~0.offset;main_~pc~0.base, main_~pc~0.offset := main_~#c~0.base, main_~#c~0.offset;havoc get_dummy_#res.base, get_dummy_#res.offset;havoc get_dummy_#t~nondet0, get_dummy_#t~ite1.base, get_dummy_#t~ite1.offset; {19#(not (= 0 ULTIMATE.start_main_~pc~0.base))} is VALID [2020-07-28 17:58:34,569 INFO L280 TraceCheckUtils]: 2: Hoare triple {19#(not (= 0 ULTIMATE.start_main_~pc~0.base))} assume 0 != get_dummy_#t~nondet0 % 256;get_dummy_#t~ite1.base, get_dummy_#t~ite1.offset := ~#a~0.base, ~#a~0.offset; {19#(not (= 0 ULTIMATE.start_main_~pc~0.base))} is VALID [2020-07-28 17:58:34,570 INFO L280 TraceCheckUtils]: 3: Hoare triple {19#(not (= 0 ULTIMATE.start_main_~pc~0.base))} get_dummy_#res.base, get_dummy_#res.offset := get_dummy_#t~ite1.base, get_dummy_#t~ite1.offset;havoc get_dummy_#t~ite1.base, get_dummy_#t~ite1.offset;havoc get_dummy_#t~nondet0; {19#(not (= 0 ULTIMATE.start_main_~pc~0.base))} is VALID [2020-07-28 17:58:34,571 INFO L280 TraceCheckUtils]: 4: Hoare triple {19#(not (= 0 ULTIMATE.start_main_~pc~0.base))} main_#t~ret4.base, main_#t~ret4.offset := get_dummy_#res.base, get_dummy_#res.offset;main_~pb~0.base, main_~pb~0.offset := main_#t~ret4.base, main_#t~ret4.offset;main_~pa~0.base, main_~pa~0.offset := main_~pb~0.base, main_~pb~0.offset;havoc main_#t~ret4.base, main_#t~ret4.offset;main_#t~short8 := main_~pc~0.base == 0 && main_~pc~0.offset == 0; {20#(not |ULTIMATE.start_main_#t~short8|)} is VALID [2020-07-28 17:58:34,574 INFO L280 TraceCheckUtils]: 5: Hoare triple {20#(not |ULTIMATE.start_main_#t~short8|)} assume main_#t~short8; {18#false} is VALID [2020-07-28 17:58:34,575 INFO L280 TraceCheckUtils]: 6: Hoare triple {18#false} assume main_#t~short8;havoc main_#t~mem5;havoc main_#t~short7;havoc main_#t~short8;havoc main_#t~mem6; {18#false} is VALID [2020-07-28 17:58:34,575 INFO L280 TraceCheckUtils]: 7: Hoare triple {18#false} assume !false; {18#false} is VALID [2020-07-28 17:58:34,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 17:58:34,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094542673] [2020-07-28 17:58:34,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 17:58:34,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-28 17:58:34,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240518135] [2020-07-28 17:58:34,587 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-07-28 17:58:34,589 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:58:34,592 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-28 17:58:34,614 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 8 edges. 8 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:58:34,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-28 17:58:34,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 17:58:34,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-28 17:58:34,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-28 17:58:34,625 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 4 states. [2020-07-28 17:58:34,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:58:34,719 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2020-07-28 17:58:34,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-28 17:58:34,719 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-07-28 17:58:34,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:58:34,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-28 17:58:34,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 23 transitions. [2020-07-28 17:58:34,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-28 17:58:34,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 23 transitions. [2020-07-28 17:58:34,731 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 23 transitions. [2020-07-28 17:58:34,771 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 23 edges. 23 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:58:34,782 INFO L225 Difference]: With dead ends: 20 [2020-07-28 17:58:34,782 INFO L226 Difference]: Without dead ends: 11 [2020-07-28 17:58:34,786 INFO L675 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 [2020-07-28 17:58:34,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-07-28 17:58:34,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-07-28 17:58:34,823 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:58:34,824 INFO L82 GeneralOperation]: Start isEquivalent. First operand 11 states. Second operand 11 states. [2020-07-28 17:58:34,825 INFO L74 IsIncluded]: Start isIncluded. First operand 11 states. Second operand 11 states. [2020-07-28 17:58:34,825 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 11 states. [2020-07-28 17:58:34,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:58:34,828 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2020-07-28 17:58:34,828 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2020-07-28 17:58:34,829 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:58:34,829 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:58:34,829 INFO L74 IsIncluded]: Start isIncluded. First operand 11 states. Second operand 11 states. [2020-07-28 17:58:34,829 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 11 states. [2020-07-28 17:58:34,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:58:34,831 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2020-07-28 17:58:34,832 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2020-07-28 17:58:34,832 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:58:34,832 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:58:34,832 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:58:34,833 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:58:34,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-07-28 17:58:34,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2020-07-28 17:58:34,836 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2020-07-28 17:58:34,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:58:34,837 INFO L479 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2020-07-28 17:58:34,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-28 17:58:34,837 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2020-07-28 17:58:34,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-28 17:58:34,838 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:58:34,838 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 17:58:34,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-28 17:58:34,839 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:58:34,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:58:34,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1264891372, now seen corresponding path program 1 times [2020-07-28 17:58:34,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 17:58:34,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824633552] [2020-07-28 17:58:34,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 17:58:34,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:58:34,957 INFO L280 TraceCheckUtils]: 0: Hoare triple {85#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call ~#a~0.base, ~#a~0.offset := #Ultimate.allocOnStack(4);call write~init~int(0, ~#a~0.base, ~#a~0.offset, 4);call ~#b~0.base, ~#b~0.offset := #Ultimate.allocOnStack(4);call write~init~int(0, ~#b~0.base, ~#b~0.offset, 4); {85#true} is VALID [2020-07-28 17:58:34,957 INFO L280 TraceCheckUtils]: 1: Hoare triple {85#true} havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4.base, main_#t~ret4.offset, main_#t~mem5, main_#t~mem6, main_#t~short7, main_#t~short8, main_~a~1, main_~b~1, main_~#c~0.base, main_~#c~0.offset, main_~pa~0.base, main_~pa~0.offset, main_~pb~0.base, main_~pb~0.offset, main_~pc~0.base, main_~pc~0.offset;havoc main_~a~1;havoc main_~b~1;call main_~#c~0.base, main_~#c~0.offset := #Ultimate.allocOnStack(4);call write~init~int(5, main_~#c~0.base, main_~#c~0.offset, 4);assume -2147483648 <= main_#t~nondet2 && main_#t~nondet2 <= 2147483647;main_~a~1 := main_#t~nondet2;havoc main_#t~nondet2;assume -2147483648 <= main_#t~nondet3 && main_#t~nondet3 <= 2147483647;main_~b~1 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~pa~0.base, main_~pa~0.offset;havoc main_~pb~0.base, main_~pb~0.offset;main_~pc~0.base, main_~pc~0.offset := main_~#c~0.base, main_~#c~0.offset;havoc get_dummy_#res.base, get_dummy_#res.offset;havoc get_dummy_#t~nondet0, get_dummy_#t~ite1.base, get_dummy_#t~ite1.offset; {85#true} is VALID [2020-07-28 17:58:34,958 INFO L280 TraceCheckUtils]: 2: Hoare triple {85#true} assume 0 != get_dummy_#t~nondet0 % 256;get_dummy_#t~ite1.base, get_dummy_#t~ite1.offset := ~#a~0.base, ~#a~0.offset; {85#true} is VALID [2020-07-28 17:58:34,958 INFO L280 TraceCheckUtils]: 3: Hoare triple {85#true} get_dummy_#res.base, get_dummy_#res.offset := get_dummy_#t~ite1.base, get_dummy_#t~ite1.offset;havoc get_dummy_#t~ite1.base, get_dummy_#t~ite1.offset;havoc get_dummy_#t~nondet0; {85#true} is VALID [2020-07-28 17:58:34,959 INFO L280 TraceCheckUtils]: 4: Hoare triple {85#true} main_#t~ret4.base, main_#t~ret4.offset := get_dummy_#res.base, get_dummy_#res.offset;main_~pb~0.base, main_~pb~0.offset := main_#t~ret4.base, main_#t~ret4.offset;main_~pa~0.base, main_~pa~0.offset := main_~pb~0.base, main_~pb~0.offset;havoc main_#t~ret4.base, main_#t~ret4.offset;main_#t~short8 := main_~pc~0.base == 0 && main_~pc~0.offset == 0; {87#(and (= ULTIMATE.start_main_~pb~0.base ULTIMATE.start_main_~pa~0.base) (= ULTIMATE.start_main_~pb~0.offset ULTIMATE.start_main_~pa~0.offset))} is VALID [2020-07-28 17:58:34,960 INFO L280 TraceCheckUtils]: 5: Hoare triple {87#(and (= ULTIMATE.start_main_~pb~0.base ULTIMATE.start_main_~pa~0.base) (= ULTIMATE.start_main_~pb~0.offset ULTIMATE.start_main_~pa~0.offset))} assume !main_#t~short8;main_#t~short7 := main_~pa~0.base == main_~pb~0.base && main_~pa~0.offset == main_~pb~0.offset; {87#(and (= ULTIMATE.start_main_~pb~0.base ULTIMATE.start_main_~pa~0.base) (= ULTIMATE.start_main_~pb~0.offset ULTIMATE.start_main_~pa~0.offset))} is VALID [2020-07-28 17:58:34,962 INFO L280 TraceCheckUtils]: 6: Hoare triple {87#(and (= ULTIMATE.start_main_~pb~0.base ULTIMATE.start_main_~pa~0.base) (= ULTIMATE.start_main_~pb~0.offset ULTIMATE.start_main_~pa~0.offset))} assume main_#t~short7;call main_#t~mem5 := read~int(main_~pa~0.base, main_~pa~0.offset, 4);call main_#t~mem6 := read~int(main_~pb~0.base, main_~pb~0.offset, 4);main_#t~short7 := main_#t~mem5 != main_#t~mem6; {88#(not |ULTIMATE.start_main_#t~short7|)} is VALID [2020-07-28 17:58:34,963 INFO L280 TraceCheckUtils]: 7: Hoare triple {88#(not |ULTIMATE.start_main_#t~short7|)} main_#t~short8 := main_#t~short7; {89#(not |ULTIMATE.start_main_#t~short8|)} is VALID [2020-07-28 17:58:34,964 INFO L280 TraceCheckUtils]: 8: Hoare triple {89#(not |ULTIMATE.start_main_#t~short8|)} assume main_#t~short8;havoc main_#t~mem5;havoc main_#t~short7;havoc main_#t~short8;havoc main_#t~mem6; {86#false} is VALID [2020-07-28 17:58:34,964 INFO L280 TraceCheckUtils]: 9: Hoare triple {86#false} assume !false; {86#false} is VALID [2020-07-28 17:58:34,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 17:58:34,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824633552] [2020-07-28 17:58:34,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 17:58:34,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-28 17:58:34,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583234621] [2020-07-28 17:58:34,968 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-07-28 17:58:34,968 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:58:34,968 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-28 17:58:34,985 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 10 edges. 10 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:58:34,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-28 17:58:34,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 17:58:34,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-28 17:58:34,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-28 17:58:34,987 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 5 states. [2020-07-28 17:58:35,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:58:35,079 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2020-07-28 17:58:35,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-28 17:58:35,079 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-07-28 17:58:35,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:58:35,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-28 17:58:35,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 12 transitions. [2020-07-28 17:58:35,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-28 17:58:35,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 12 transitions. [2020-07-28 17:58:35,083 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states and 12 transitions. [2020-07-28 17:58:35,109 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:58:35,109 INFO L225 Difference]: With dead ends: 11 [2020-07-28 17:58:35,109 INFO L226 Difference]: Without dead ends: 0 [2020-07-28 17:58:35,111 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-28 17:58:35,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-28 17:58:35,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-28 17:58:35,112 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:58:35,112 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-28 17:58:35,112 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 17:58:35,112 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 17:58:35,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:58:35,113 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 17:58:35,113 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 17:58:35,114 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:58:35,114 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:58:35,114 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 17:58:35,114 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 17:58:35,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:58:35,115 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 17:58:35,115 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 17:58:35,115 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:58:35,115 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:58:35,115 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:58:35,116 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:58:35,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-28 17:58:35,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-28 17:58:35,117 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-07-28 17:58:35,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:58:35,117 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-28 17:58:35,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-28 17:58:35,118 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 17:58:35,118 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:58:35,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-28 17:58:35,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-28 17:58:35,146 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-28 17:58:35,146 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-07-28 17:58:35,146 INFO L268 CegarLoopResult]: For program point L19-2(line 19) no Hoare annotation was computed. [2020-07-28 17:58:35,147 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-07-28 17:58:35,147 INFO L268 CegarLoopResult]: For program point L9-2(line 9) no Hoare annotation was computed. [2020-07-28 17:58:35,147 INFO L264 CegarLoopResult]: At program point L9-3(lines 7 10) the Hoare annotation is: (not (= 0 ULTIMATE.start_main_~pc~0.base)) [2020-07-28 17:58:35,147 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-07-28 17:58:35,147 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-28 17:58:35,148 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-28 17:58:35,148 INFO L264 CegarLoopResult]: At program point L26(lines 12 27) the Hoare annotation is: (not (= 0 ULTIMATE.start_main_~pc~0.base)) [2020-07-28 17:58:35,148 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 25) no Hoare annotation was computed. [2020-07-28 17:58:35,149 INFO L264 CegarLoopResult]: At program point L20(lines 12 27) the Hoare annotation is: false [2020-07-28 17:58:35,149 INFO L268 CegarLoopResult]: For program point L18(lines 18 19) no Hoare annotation was computed. [2020-07-28 17:58:35,149 INFO L268 CegarLoopResult]: For program point L18-2(lines 18 21) no Hoare annotation was computed. [2020-07-28 17:58:35,154 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 17:58:35,155 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-28 17:58:35,155 WARN L170 areAnnotationChecker]: L9 has no Hoare annotation [2020-07-28 17:58:35,155 WARN L170 areAnnotationChecker]: L9 has no Hoare annotation [2020-07-28 17:58:35,155 WARN L170 areAnnotationChecker]: L9-2 has no Hoare annotation [2020-07-28 17:58:35,155 WARN L170 areAnnotationChecker]: L18 has no Hoare annotation [2020-07-28 17:58:35,156 WARN L170 areAnnotationChecker]: L18 has no Hoare annotation [2020-07-28 17:58:35,156 WARN L170 areAnnotationChecker]: L18 has no Hoare annotation [2020-07-28 17:58:35,156 WARN L170 areAnnotationChecker]: L18-2 has no Hoare annotation [2020-07-28 17:58:35,156 WARN L170 areAnnotationChecker]: L18-2 has no Hoare annotation [2020-07-28 17:58:35,157 WARN L170 areAnnotationChecker]: L19 has no Hoare annotation [2020-07-28 17:58:35,157 WARN L170 areAnnotationChecker]: L19 has no Hoare annotation [2020-07-28 17:58:35,157 WARN L170 areAnnotationChecker]: ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION has no Hoare annotation [2020-07-28 17:58:35,158 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:58:35,158 WARN L170 areAnnotationChecker]: L19-2 has no Hoare annotation [2020-07-28 17:58:35,158 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:58:35,158 INFO L163 areAnnotationChecker]: CFG has 1 edges. 1 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-28 17:58:35,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 05:58:35 BoogieIcfgContainer [2020-07-28 17:58:35,172 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 17:58:35,172 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 17:58:35,172 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 17:58:35,173 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 17:58:35,173 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:58:34" (3/4) ... [2020-07-28 17:58:35,177 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-07-28 17:58:35,190 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-07-28 17:58:35,191 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-07-28 17:58:35,191 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-07-28 17:58:35,255 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-28 17:58:35,256 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 17:58:35,259 INFO L168 Benchmark]: Toolchain (without parser) took 1810.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 956.2 MB in the beginning and 1.0 GB in the end (delta: -74.5 MB). Peak memory consumption was 69.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:58:35,260 INFO L168 Benchmark]: CDTParser took 0.56 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:58:35,261 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.44 ms. Allocated memory is still 1.0 GB. Free memory was 956.2 MB in the beginning and 945.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:58:35,261 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 945.5 MB in the beginning and 1.1 GB in the end (delta: -195.4 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:58:35,262 INFO L168 Benchmark]: Boogie Preprocessor took 21.87 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:58:35,263 INFO L168 Benchmark]: RCFGBuilder took 374.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 30.4 MB). Peak memory consumption was 30.4 MB. Max. memory is 11.5 GB. [2020-07-28 17:58:35,263 INFO L168 Benchmark]: TraceAbstraction took 961.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 73.3 MB). Peak memory consumption was 73.3 MB. Max. memory is 11.5 GB. [2020-07-28 17:58:35,264 INFO L168 Benchmark]: Witness Printer took 83.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2020-07-28 17:58:35,267 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 270.44 ms. Allocated memory is still 1.0 GB. Free memory was 956.2 MB in the beginning and 945.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 90.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 945.5 MB in the beginning and 1.1 GB in the end (delta: -195.4 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.87 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 374.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 30.4 MB). Peak memory consumption was 30.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 961.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 73.3 MB). Peak memory consumption was 73.3 MB. Max. memory is 11.5 GB. * Witness Printer took 83.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: 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: 12]: Loop Invariant Derived loop invariant: !(0 == pc) - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: !(0 == pc) - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 20 SDtfs, 18 SDslu, 21 SDs, 0 SdLazy, 14 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 4 NumberOfFragments, 9 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 326 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...