./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-industry-pattern/mod3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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/loop-industry-pattern/mod3.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(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fb436d6177ee4ab6be6acbe7c4a410005aee8ab3 .............................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 11:07:40,981 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 11:07:40,982 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 11:07:41,017 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 11:07:41,018 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 11:07:41,019 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 11:07:41,020 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 11:07:41,021 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 11:07:41,022 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 11:07:41,049 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 11:07:41,049 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 11:07:41,055 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 11:07:41,055 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 11:07:41,060 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 11:07:41,062 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 11:07:41,064 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 11:07:41,066 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 11:07:41,068 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 11:07:41,069 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 11:07:41,072 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 11:07:41,075 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 11:07:41,076 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 11:07:41,077 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 11:07:41,078 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 11:07:41,081 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 11:07:41,083 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 11:07:41,083 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 11:07:41,083 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 11:07:41,084 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 11:07:41,085 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 11:07:41,085 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 11:07:41,086 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 11:07:41,086 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 11:07:41,087 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 11:07:41,088 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 11:07:41,088 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 11:07:41,089 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 11:07:41,089 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 11:07:41,089 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 11:07:41,091 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 11:07:41,091 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 11:07:41,092 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 11:07:41,156 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 11:07:41,157 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 11:07:41,157 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 11:07:41,158 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 11:07:41,159 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 11:07:41,159 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 11:07:41,159 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 11:07:41,159 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 11:07:41,159 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 11:07:41,160 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 11:07:41,160 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 11:07:41,160 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 11:07:41,160 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 11:07:41,161 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 11:07:41,161 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 11:07:41,161 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 11:07:41,161 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 11:07:41,161 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 11:07:41,161 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 11:07:41,162 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 11:07:41,162 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 11:07:41,162 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 11:07:41,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 11:07:41,162 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 11:07:41,162 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 11:07:41,163 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 11:07:41,163 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 11:07:41,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 11:07:41,163 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 11:07:41,163 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 11:07:41,163 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fb436d6177ee4ab6be6acbe7c4a410005aee8ab3 [2021-08-29 11:07:41,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 11:07:41,439 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 11:07:41,442 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 11:07:41,443 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 11:07:41,443 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 11:07:41,445 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-industry-pattern/mod3.c [2021-08-29 11:07:41,499 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/832fed3da/4c215dcfaa9e45d991b37f841c04fff7/FLAG8749067b6 [2021-08-29 11:07:41,886 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 11:07:41,887 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-industry-pattern/mod3.c [2021-08-29 11:07:41,891 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/832fed3da/4c215dcfaa9e45d991b37f841c04fff7/FLAG8749067b6 [2021-08-29 11:07:41,907 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/832fed3da/4c215dcfaa9e45d991b37f841c04fff7 [2021-08-29 11:07:41,909 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 11:07:41,911 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 11:07:41,912 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 11:07:41,912 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 11:07:41,914 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 11:07:41,915 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 11:07:41" (1/1) ... [2021-08-29 11:07:41,915 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18587c68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:07:41, skipping insertion in model container [2021-08-29 11:07:41,916 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 11:07:41" (1/1) ... [2021-08-29 11:07:41,920 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 11:07:41,928 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 11:07:42,036 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-industry-pattern/mod3.c[394,407] [2021-08-29 11:07:42,048 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 11:07:42,053 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 11:07:42,062 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-industry-pattern/mod3.c[394,407] [2021-08-29 11:07:42,071 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 11:07:42,102 INFO L208 MainTranslator]: Completed translation [2021-08-29 11:07:42,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:07:42 WrapperNode [2021-08-29 11:07:42,102 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 11:07:42,103 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 11:07:42,103 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 11:07:42,103 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 11:07:42,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:07:42" (1/1) ... [2021-08-29 11:07:42,118 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:07:42" (1/1) ... [2021-08-29 11:07:42,134 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 11:07:42,135 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 11:07:42,135 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 11:07:42,136 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 11:07:42,141 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:07:42" (1/1) ... [2021-08-29 11:07:42,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:07:42" (1/1) ... [2021-08-29 11:07:42,143 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:07:42" (1/1) ... [2021-08-29 11:07:42,143 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:07:42" (1/1) ... [2021-08-29 11:07:42,152 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:07:42" (1/1) ... [2021-08-29 11:07:42,155 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:07:42" (1/1) ... [2021-08-29 11:07:42,161 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:07:42" (1/1) ... [2021-08-29 11:07:42,163 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 11:07:42,164 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 11:07:42,164 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 11:07:42,164 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 11:07:42,165 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:07:42" (1/1) ... [2021-08-29 11:07:42,170 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 11:07:42,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 11:07:42,205 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-29 11:07:42,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-29 11:07:42,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 11:07:42,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 11:07:42,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 11:07:42,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 11:07:42,377 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 11:07:42,378 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-08-29 11:07:42,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 11:07:42 BoogieIcfgContainer [2021-08-29 11:07:42,379 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 11:07:42,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 11:07:42,380 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 11:07:42,382 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 11:07:42,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 11:07:41" (1/3) ... [2021-08-29 11:07:42,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bae7c70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 11:07:42, skipping insertion in model container [2021-08-29 11:07:42,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:07:42" (2/3) ... [2021-08-29 11:07:42,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bae7c70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 11:07:42, skipping insertion in model container [2021-08-29 11:07:42,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 11:07:42" (3/3) ... [2021-08-29 11:07:42,385 INFO L111 eAbstractionObserver]: Analyzing ICFG mod3.c [2021-08-29 11:07:42,388 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 11:07:42,389 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 11:07:42,425 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 11:07:42,431 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-29 11:07:42,432 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-29 11:07:42,441 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:07:42,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-29 11:07:42,450 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 11:07:42,451 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-29 11:07:42,452 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 11:07:42,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 11:07:42,456 INFO L82 PathProgramCache]: Analyzing trace with hash 890278313, now seen corresponding path program 1 times [2021-08-29 11:07:42,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 11:07:42,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547074580] [2021-08-29 11:07:42,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:07:42,463 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 11:07:42,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 11:07:42,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 11:07:42,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 11:07:42,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547074580] [2021-08-29 11:07:42,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547074580] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 11:07:42,573 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 11:07:42,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 11:07:42,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79591115] [2021-08-29 11:07:42,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 11:07:42,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 11:07:42,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 11:07:42,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 11:07:42,594 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:07:44,622 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 11:07:46,802 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 11:07:48,971 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 11:07:49,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 11:07:49,140 INFO L93 Difference]: Finished difference Result 23 states and 30 transitions. [2021-08-29 11:07:49,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 11:07:49,142 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-08-29 11:07:49,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 11:07:49,147 INFO L225 Difference]: With dead ends: 23 [2021-08-29 11:07:49,147 INFO L226 Difference]: Without dead ends: 11 [2021-08-29 11:07:49,148 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 11:07:49,151 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6040.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.22ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6533.65ms IncrementalHoareTripleChecker+Time [2021-08-29 11:07:49,151 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 19 Unknown, 0 Unchecked, 0.22ms Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 3 Unknown, 0 Unchecked, 6533.65ms Time] [2021-08-29 11:07:49,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-08-29 11:07:49,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-08-29 11:07:49,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:07:49,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2021-08-29 11:07:49,170 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 14 transitions. Word has length 6 [2021-08-29 11:07:49,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 11:07:49,170 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 14 transitions. [2021-08-29 11:07:49,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:07:49,170 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 14 transitions. [2021-08-29 11:07:49,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-29 11:07:49,171 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 11:07:49,171 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-29 11:07:49,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 11:07:49,171 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 11:07:49,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 11:07:49,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1806865054, now seen corresponding path program 1 times [2021-08-29 11:07:49,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 11:07:49,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259784309] [2021-08-29 11:07:49,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:07:49,173 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 11:07:49,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 11:07:49,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 11:07:49,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 11:07:49,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259784309] [2021-08-29 11:07:49,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259784309] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 11:07:49,214 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 11:07:49,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 11:07:49,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020319749] [2021-08-29 11:07:49,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 11:07:49,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 11:07:49,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 11:07:49,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 11:07:49,216 INFO L87 Difference]: Start difference. First operand 11 states and 14 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:07:51,237 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 11:07:53,410 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 11:07:55,583 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 11:07:55,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 11:07:55,768 INFO L93 Difference]: Finished difference Result 20 states and 26 transitions. [2021-08-29 11:07:55,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 11:07:55,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-08-29 11:07:55,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 11:07:55,777 INFO L225 Difference]: With dead ends: 20 [2021-08-29 11:07:55,777 INFO L226 Difference]: Without dead ends: 16 [2021-08-29 11:07:55,777 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.83ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 11:07:55,778 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 3 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6044.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.51ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6545.63ms IncrementalHoareTripleChecker+Time [2021-08-29 11:07:55,778 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 0 Invalid, 26 Unknown, 0 Unchecked, 0.51ms Time], IncrementalHoareTripleChecker [4 Valid, 19 Invalid, 3 Unknown, 0 Unchecked, 6545.63ms Time] [2021-08-29 11:07:55,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-08-29 11:07:55,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 13. [2021-08-29 11:07:55,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:07:55,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2021-08-29 11:07:55,782 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 7 [2021-08-29 11:07:55,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 11:07:55,783 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2021-08-29 11:07:55,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:07:55,783 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2021-08-29 11:07:55,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-29 11:07:55,785 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 11:07:55,785 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 11:07:55,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-29 11:07:55,785 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 11:07:55,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 11:07:55,786 INFO L82 PathProgramCache]: Analyzing trace with hash 694220730, now seen corresponding path program 1 times [2021-08-29 11:07:55,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 11:07:55,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33121008] [2021-08-29 11:07:55,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:07:55,787 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 11:07:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 11:07:55,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 11:07:55,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 11:07:55,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33121008] [2021-08-29 11:07:55,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33121008] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 11:07:55,929 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 11:07:55,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 11:07:55,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136930008] [2021-08-29 11:07:55,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 11:07:55,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 11:07:55,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 11:07:55,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 11:07:55,931 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:07:57,954 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 11:08:00,124 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 11:08:02,291 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 11:08:04,457 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 11:08:06,668 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 11:08:08,841 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 11:08:09,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 11:08:09,023 INFO L93 Difference]: Finished difference Result 21 states and 26 transitions. [2021-08-29 11:08:09,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 11:08:09,023 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-08-29 11:08:09,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 11:08:09,023 INFO L225 Difference]: With dead ends: 21 [2021-08-29 11:08:09,023 INFO L226 Difference]: Without dead ends: 17 [2021-08-29 11:08:09,024 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.05ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 11:08:09,024 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 3 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12064.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.53ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13065.61ms IncrementalHoareTripleChecker+Time [2021-08-29 11:08:09,026 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 0 Invalid, 45 Unknown, 0 Unchecked, 0.53ms Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 6 Unknown, 0 Unchecked, 13065.61ms Time] [2021-08-29 11:08:09,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-08-29 11:08:09,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 13. [2021-08-29 11:08:09,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:08:09,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2021-08-29 11:08:09,030 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 10 [2021-08-29 11:08:09,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 11:08:09,030 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2021-08-29 11:08:09,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:08:09,030 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2021-08-29 11:08:09,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-29 11:08:09,031 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 11:08:09,031 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 11:08:09,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-29 11:08:09,031 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 11:08:09,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 11:08:09,032 INFO L82 PathProgramCache]: Analyzing trace with hash -2105263274, now seen corresponding path program 1 times [2021-08-29 11:08:09,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 11:08:09,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284992230] [2021-08-29 11:08:09,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:08:09,032 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 11:08:09,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 11:08:09,191 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 11:08:09,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 11:08:09,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284992230] [2021-08-29 11:08:09,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284992230] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 11:08:09,192 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 11:08:09,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 11:08:09,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512346427] [2021-08-29 11:08:09,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 11:08:09,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 11:08:09,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 11:08:09,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 11:08:09,196 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:08:11,218 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 11:08:13,378 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 11:08:15,546 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 11:08:17,718 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 11:08:19,895 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 11:08:22,087 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 11:08:22,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 11:08:22,274 INFO L93 Difference]: Finished difference Result 14 states and 18 transitions. [2021-08-29 11:08:22,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 11:08:22,275 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-08-29 11:08:22,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 11:08:22,275 INFO L225 Difference]: With dead ends: 14 [2021-08-29 11:08:22,275 INFO L226 Difference]: Without dead ends: 0 [2021-08-29 11:08:22,276 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.64ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 11:08:22,276 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12054.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.45ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13054.27ms IncrementalHoareTripleChecker+Time [2021-08-29 11:08:22,276 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 34 Unknown, 0 Unchecked, 0.45ms Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 6 Unknown, 0 Unchecked, 13054.27ms Time] [2021-08-29 11:08:22,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-29 11:08:22,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-29 11:08:22,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:08:22,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-29 11:08:22,277 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2021-08-29 11:08:22,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 11:08:22,277 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-29 11:08:22,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:08:22,277 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-29 11:08:22,277 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-29 11:08:22,279 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-08-29 11:08:22,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-29 11:08:22,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-29 11:08:22,284 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 11:08:22,285 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 11:08:22,286 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 11:08:22,296 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-29 11:08:22,297 INFO L858 garLoopResultBuilder]: For program point L25(lines 25 28) no Hoare annotation was computed. [2021-08-29 11:08:22,297 INFO L854 garLoopResultBuilder]: At program point L25-2(lines 18 31) the Hoare annotation is: (or (<= ULTIMATE.start_main_~x~0 (let ((.cse2 (div ULTIMATE.start_main_~x~0 4294967296))) (let ((.cse0 (* .cse2 (- 4294967296)))) (let ((.cse1 (div (+ ULTIMATE.start_main_~x~0 .cse0) 3))) (+ (* 4294967296 (div (+ ULTIMATE.start_main_~x~0 .cse0 (* .cse1 (- 3))) 4294967296)) (* 3 .cse1) (* 4294967296 .cse2)))))) (= ULTIMATE.start_main_~y~0 1)) [2021-08-29 11:08:22,297 INFO L858 garLoopResultBuilder]: For program point L19(lines 19 30) no Hoare annotation was computed. [2021-08-29 11:08:22,297 INFO L858 garLoopResultBuilder]: For program point L9(lines 9 10) no Hoare annotation was computed. [2021-08-29 11:08:22,297 INFO L861 garLoopResultBuilder]: At program point L34(lines 14 35) the Hoare annotation is: true [2021-08-29 11:08:22,298 INFO L861 garLoopResultBuilder]: At program point L32(lines 32 33) the Hoare annotation is: true [2021-08-29 11:08:22,298 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-29 11:08:22,298 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-29 11:08:22,298 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-29 11:08:22,298 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2021-08-29 11:08:22,298 INFO L858 garLoopResultBuilder]: For program point L22(lines 22 29) no Hoare annotation was computed. [2021-08-29 11:08:22,298 INFO L858 garLoopResultBuilder]: For program point L18-1(lines 18 31) no Hoare annotation was computed. [2021-08-29 11:08:22,298 INFO L858 garLoopResultBuilder]: For program point L18-3(lines 14 35) no Hoare annotation was computed. [2021-08-29 11:08:22,299 INFO L858 garLoopResultBuilder]: For program point L10(line 10) no Hoare annotation was computed. [2021-08-29 11:08:22,302 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 11:08:22,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 11:08:22 BoogieIcfgContainer [2021-08-29 11:08:22,314 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 11:08:22,315 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 11:08:22,315 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 11:08:22,315 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 11:08:22,316 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 11:07:42" (3/4) ... [2021-08-29 11:08:22,317 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-29 11:08:22,324 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-08-29 11:08:22,324 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-08-29 11:08:22,325 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-08-29 11:08:22,325 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 11:08:22,325 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 11:08:22,380 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 11:08:22,380 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 11:08:22,381 INFO L158 Benchmark]: Toolchain (without parser) took 40469.90ms. Allocated memory was 60.8MB in the beginning and 75.5MB in the end (delta: 14.7MB). Free memory was 39.9MB in the beginning and 51.4MB in the end (delta: -11.5MB). Peak memory consumption was 3.1MB. Max. memory is 16.1GB. [2021-08-29 11:08:22,381 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 60.8MB. Free memory was 43.1MB in the beginning and 43.1MB in the end (delta: 42.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 11:08:22,381 INFO L158 Benchmark]: CACSL2BoogieTranslator took 190.26ms. Allocated memory is still 60.8MB. Free memory was 39.8MB in the beginning and 45.3MB in the end (delta: -5.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-08-29 11:08:22,382 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.86ms. Allocated memory is still 60.8MB. Free memory was 45.2MB in the beginning and 43.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 11:08:22,382 INFO L158 Benchmark]: Boogie Preprocessor took 27.40ms. Allocated memory is still 60.8MB. Free memory was 43.7MB in the beginning and 42.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 11:08:22,382 INFO L158 Benchmark]: RCFGBuilder took 215.41ms. Allocated memory is still 60.8MB. Free memory was 42.5MB in the beginning and 33.8MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-29 11:08:22,382 INFO L158 Benchmark]: TraceAbstraction took 39933.27ms. Allocated memory was 60.8MB in the beginning and 75.5MB in the end (delta: 14.7MB). Free memory was 33.5MB in the beginning and 54.4MB in the end (delta: -20.9MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 11:08:22,383 INFO L158 Benchmark]: Witness Printer took 65.31ms. Allocated memory is still 75.5MB. Free memory was 54.4MB in the beginning and 51.4MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-29 11:08:22,384 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 60.8MB. Free memory was 43.1MB in the beginning and 43.1MB in the end (delta: 42.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 190.26ms. Allocated memory is still 60.8MB. Free memory was 39.8MB in the beginning and 45.3MB in the end (delta: -5.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.86ms. Allocated memory is still 60.8MB. Free memory was 45.2MB in the beginning and 43.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 27.40ms. Allocated memory is still 60.8MB. Free memory was 43.7MB in the beginning and 42.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 215.41ms. Allocated memory is still 60.8MB. Free memory was 42.5MB in the beginning and 33.8MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 39933.27ms. Allocated memory was 60.8MB in the beginning and 75.5MB in the end (delta: 14.7MB). Free memory was 33.5MB in the beginning and 54.4MB in the end (delta: -20.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 65.31ms. Allocated memory is still 75.5MB. Free memory was 54.4MB in the beginning and 51.4MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 10]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 39877.97ms, OverallIterations: 4, TraceHistogramMax: 2, EmptinessCheckTime: 13.63ms, AutomataDifference: 39318.06ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 16.52ms, InitialAbstractionConstructionTime: 7.04ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 18 mSolverCounterUnknown, 8 SdHoareTripleChecker+Valid, 39199.16ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 36203.78ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 40 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 102 IncrementalHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 0 mSDtfsCounter, 102 mSolverCounterSat, 1.71ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.56ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 15.64ms AutomataMinimizationTime, 4 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.00ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 6 NumberOfFragments, 47 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 3.84ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 8.33ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 6.23ms SsaConstructionTime, 104.62ms SatisfiabilityAnalysisTime, 299.30ms InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 282 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 4/4 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: x <= 4294967296 * ((x + x / 4294967296 * -4294967296 + (x + x / 4294967296 * -4294967296) / 3 * -3) / 4294967296) + 3 * ((x + x / 4294967296 * -4294967296) / 3) + 4294967296 * (x / 4294967296) || y == 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-08-29 11:08:22,430 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...