./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops-crafted-1/sumt4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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/loops-crafted-1/sumt4.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 8015f40beddbd48a6a69d0e81aa81c24a23cce70998d728277f4562b5eb207d5 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 15:33:04,102 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 15:33:04,104 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 15:33:04,142 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 15:33:04,143 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 15:33:04,143 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 15:33:04,145 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 15:33:04,147 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 15:33:04,148 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 15:33:04,151 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 15:33:04,152 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 15:33:04,153 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 15:33:04,153 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 15:33:04,155 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 15:33:04,155 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 15:33:04,157 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 15:33:04,158 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 15:33:04,159 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 15:33:04,160 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 15:33:04,164 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 15:33:04,165 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 15:33:04,166 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 15:33:04,167 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 15:33:04,167 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 15:33:04,168 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 15:33:04,174 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 15:33:04,174 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 15:33:04,174 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 15:33:04,175 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 15:33:04,175 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 15:33:04,176 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 15:33:04,176 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 15:33:04,178 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 15:33:04,178 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 15:33:04,179 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 15:33:04,179 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 15:33:04,179 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 15:33:04,180 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 15:33:04,180 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 15:33:04,180 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 15:33:04,181 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 15:33:04,182 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 15:33:04,183 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 15:33:04,206 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 15:33:04,206 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 15:33:04,206 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 15:33:04,206 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 15:33:04,207 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 15:33:04,207 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 15:33:04,207 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 15:33:04,207 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 15:33:04,208 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 15:33:04,208 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 15:33:04,208 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 15:33:04,209 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 15:33:04,209 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 15:33:04,209 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 15:33:04,209 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 15:33:04,209 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 15:33:04,209 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 15:33:04,209 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 15:33:04,209 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 15:33:04,211 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 15:33:04,211 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 15:33:04,211 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 15:33:04,211 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 15:33:04,211 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 15:33:04,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 15:33:04,211 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 15:33:04,212 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 15:33:04,212 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 15:33:04,212 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 15:33:04,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 15:33:04,212 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 15:33:04,212 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 15:33:04,212 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 15:33:04,213 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8015f40beddbd48a6a69d0e81aa81c24a23cce70998d728277f4562b5eb207d5 [2022-07-22 15:33:04,424 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 15:33:04,444 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 15:33:04,445 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 15:33:04,446 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 15:33:04,446 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 15:33:04,447 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops-crafted-1/sumt4.c [2022-07-22 15:33:04,504 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2dbfa3f9d/f56d6d0f6f6d49cd9a42b778dad5d3ce/FLAG9644da535 [2022-07-22 15:33:04,846 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 15:33:04,847 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/sumt4.c [2022-07-22 15:33:04,851 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2dbfa3f9d/f56d6d0f6f6d49cd9a42b778dad5d3ce/FLAG9644da535 [2022-07-22 15:33:04,861 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2dbfa3f9d/f56d6d0f6f6d49cd9a42b778dad5d3ce [2022-07-22 15:33:04,862 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 15:33:04,863 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 15:33:04,864 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 15:33:04,864 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 15:33:04,866 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 15:33:04,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 03:33:04" (1/1) ... [2022-07-22 15:33:04,867 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23e6cf82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:33:04, skipping insertion in model container [2022-07-22 15:33:04,867 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 03:33:04" (1/1) ... [2022-07-22 15:33:04,871 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 15:33:04,878 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 15:33:04,952 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/sumt4.c[403,416] [2022-07-22 15:33:04,961 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 15:33:04,972 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 15:33:04,979 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/sumt4.c[403,416] [2022-07-22 15:33:04,982 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 15:33:04,990 INFO L208 MainTranslator]: Completed translation [2022-07-22 15:33:04,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:33:04 WrapperNode [2022-07-22 15:33:04,990 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 15:33:04,991 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 15:33:04,991 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 15:33:04,991 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 15:33:04,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:33:04" (1/1) ... [2022-07-22 15:33:04,999 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:33:04" (1/1) ... [2022-07-22 15:33:05,009 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 43 [2022-07-22 15:33:05,009 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 15:33:05,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 15:33:05,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 15:33:05,010 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 15:33:05,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:33:04" (1/1) ... [2022-07-22 15:33:05,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:33:04" (1/1) ... [2022-07-22 15:33:05,016 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:33:04" (1/1) ... [2022-07-22 15:33:05,016 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:33:04" (1/1) ... [2022-07-22 15:33:05,018 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:33:04" (1/1) ... [2022-07-22 15:33:05,019 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:33:04" (1/1) ... [2022-07-22 15:33:05,020 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:33:04" (1/1) ... [2022-07-22 15:33:05,021 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 15:33:05,021 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 15:33:05,022 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 15:33:05,022 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 15:33:05,022 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:33:04" (1/1) ... [2022-07-22 15:33:05,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 15:33:05,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 15:33:05,050 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) [2022-07-22 15:33:05,056 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 [2022-07-22 15:33:05,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 15:33:05,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 15:33:05,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 15:33:05,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 15:33:05,109 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 15:33:05,110 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 15:33:07,361 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 15:33:07,367 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 15:33:07,367 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 15:33:07,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 03:33:07 BoogieIcfgContainer [2022-07-22 15:33:07,368 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 15:33:07,369 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 15:33:07,369 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 15:33:07,371 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 15:33:07,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 03:33:04" (1/3) ... [2022-07-22 15:33:07,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eaefeb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 03:33:07, skipping insertion in model container [2022-07-22 15:33:07,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:33:04" (2/3) ... [2022-07-22 15:33:07,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eaefeb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 03:33:07, skipping insertion in model container [2022-07-22 15:33:07,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 03:33:07" (3/3) ... [2022-07-22 15:33:07,373 INFO L111 eAbstractionObserver]: Analyzing ICFG sumt4.c [2022-07-22 15:33:07,382 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 15:33:07,382 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 15:33:07,409 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 15:33:07,414 INFO L357 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, mAutomataTypeConcurrency=PETRI_NET, 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7445ac13, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5bfc2072 [2022-07-22 15:33:07,414 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 15:33:07,416 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 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) [2022-07-22 15:33:07,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-22 15:33:07,420 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 15:33:07,421 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-22 15:33:07,421 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 15:33:07,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 15:33:07,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1807612808, now seen corresponding path program 1 times [2022-07-22 15:33:07,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 15:33:07,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405920156] [2022-07-22 15:33:07,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:33:07,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 15:33:07,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 15:33:07,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:33:07,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 15:33:07,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405920156] [2022-07-22 15:33:07,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405920156] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 15:33:07,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 15:33:07,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 15:33:07,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654717136] [2022-07-22 15:33:07,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 15:33:07,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 15:33:07,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 15:33:07,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 15:33:07,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 15:33:07,560 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 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 3.5) internal successors, (7), 2 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) [2022-07-22 15:33:07,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 15:33:07,568 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2022-07-22 15:33:07,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 15:33:07,569 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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 [2022-07-22 15:33:07,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 15:33:07,574 INFO L225 Difference]: With dead ends: 24 [2022-07-22 15:33:07,574 INFO L226 Difference]: Without dead ends: 12 [2022-07-22 15:33:07,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 15:33:07,578 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 15:33:07,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 15:33:07,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-07-22 15:33:07,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-07-22 15:33:07,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 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) [2022-07-22 15:33:07,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2022-07-22 15:33:07,596 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 15 transitions. Word has length 7 [2022-07-22 15:33:07,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 15:33:07,597 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 15 transitions. [2022-07-22 15:33:07,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2022-07-22 15:33:07,597 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 15 transitions. [2022-07-22 15:33:07,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-22 15:33:07,597 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 15:33:07,597 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-22 15:33:07,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 15:33:07,598 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 15:33:07,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 15:33:07,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1806987197, now seen corresponding path program 1 times [2022-07-22 15:33:07,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 15:33:07,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821145190] [2022-07-22 15:33:07,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:33:07,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 15:33:07,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 15:33:07,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:33:07,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 15:33:07,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821145190] [2022-07-22 15:33:07,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821145190] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 15:33:07,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 15:33:07,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 15:33:07,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777933579] [2022-07-22 15:33:07,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 15:33:07,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 15:33:07,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 15:33:07,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 15:33:07,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 15:33:07,791 INFO L87 Difference]: Start difference. First operand 12 states and 15 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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) [2022-07-22 15:33:09,844 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 15:33:10,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 15:33:10,041 INFO L93 Difference]: Finished difference Result 25 states and 33 transitions. [2022-07-22 15:33:10,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 15:33:10,042 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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 [2022-07-22 15:33:10,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 15:33:10,042 INFO L225 Difference]: With dead ends: 25 [2022-07-22 15:33:10,042 INFO L226 Difference]: Without dead ends: 14 [2022-07-22 15:33:10,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 15:33:10,043 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-22 15:33:10,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 24 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-22 15:33:10,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-07-22 15:33:10,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-07-22 15:33:10,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 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) [2022-07-22 15:33:10,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2022-07-22 15:33:10,046 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 7 [2022-07-22 15:33:10,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 15:33:10,046 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2022-07-22 15:33:10,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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) [2022-07-22 15:33:10,047 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2022-07-22 15:33:10,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-22 15:33:10,047 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 15:33:10,047 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 15:33:10,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 15:33:10,047 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 15:33:10,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 15:33:10,048 INFO L85 PathProgramCache]: Analyzing trace with hash 87918451, now seen corresponding path program 1 times [2022-07-22 15:33:10,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 15:33:10,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120696783] [2022-07-22 15:33:10,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:33:10,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 15:33:10,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 15:33:10,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:33:10,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 15:33:10,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120696783] [2022-07-22 15:33:10,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120696783] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 15:33:10,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556685662] [2022-07-22 15:33:10,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:33:10,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 15:33:10,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 15:33:10,426 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 15:33:10,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 15:33:10,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 15:33:10,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-22 15:33:10,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 15:33:10,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:33:10,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 15:33:10,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 15:33:10,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556685662] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 15:33:10,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-22 15:33:10,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 6] total 13 [2022-07-22 15:33:10,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819144443] [2022-07-22 15:33:10,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 15:33:10,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 15:33:10,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 15:33:10,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 15:33:10,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-07-22 15:33:10,726 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2022-07-22 15:33:12,764 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 15:33:14,881 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 15:33:15,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 15:33:15,068 INFO L93 Difference]: Finished difference Result 22 states and 27 transitions. [2022-07-22 15:33:15,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 15:33:15,069 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 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 [2022-07-22 15:33:15,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 15:33:15,069 INFO L225 Difference]: With dead ends: 22 [2022-07-22 15:33:15,069 INFO L226 Difference]: Without dead ends: 18 [2022-07-22 15:33:15,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2022-07-22 15:33:15,070 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-07-22 15:33:15,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 20 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 2 Unknown, 0 Unchecked, 4.3s Time] [2022-07-22 15:33:15,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-07-22 15:33:15,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2022-07-22 15:33:15,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 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) [2022-07-22 15:33:15,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2022-07-22 15:33:15,073 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 10 [2022-07-22 15:33:15,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 15:33:15,073 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2022-07-22 15:33:15,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2022-07-22 15:33:15,074 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2022-07-22 15:33:15,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-22 15:33:15,074 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 15:33:15,074 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 15:33:15,108 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-22 15:33:15,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 15:33:15,283 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 15:33:15,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 15:33:15,284 INFO L85 PathProgramCache]: Analyzing trace with hash -116405439, now seen corresponding path program 1 times [2022-07-22 15:33:15,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 15:33:15,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466803968] [2022-07-22 15:33:15,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:33:15,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 15:33:15,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 15:33:15,483 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:33:15,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 15:33:15,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466803968] [2022-07-22 15:33:15,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466803968] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 15:33:15,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388382254] [2022-07-22 15:33:15,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:33:15,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 15:33:15,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 15:33:15,487 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 15:33:15,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 15:33:15,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 15:33:15,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-22 15:33:15,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 15:33:15,729 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:33:15,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 15:33:15,888 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 15:33:15,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388382254] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 15:33:15,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-22 15:33:15,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 8] total 15 [2022-07-22 15:33:15,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582993813] [2022-07-22 15:33:15,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 15:33:15,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 15:33:15,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 15:33:15,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 15:33:15,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-07-22 15:33:15,890 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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) [2022-07-22 15:33:17,911 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 15:33:18,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 15:33:18,110 INFO L93 Difference]: Finished difference Result 25 states and 31 transitions. [2022-07-22 15:33:18,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 15:33:18,111 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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 14 [2022-07-22 15:33:18,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 15:33:18,111 INFO L225 Difference]: With dead ends: 25 [2022-07-22 15:33:18,111 INFO L226 Difference]: Without dead ends: 21 [2022-07-22 15:33:18,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-07-22 15:33:18,112 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 1 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-22 15:33:18,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-22 15:33:18,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-07-22 15:33:18,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2022-07-22 15:33:18,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 17 states have internal predecessors, (23), 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) [2022-07-22 15:33:18,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2022-07-22 15:33:18,115 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 14 [2022-07-22 15:33:18,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 15:33:18,115 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 23 transitions. [2022-07-22 15:33:18,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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) [2022-07-22 15:33:18,115 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2022-07-22 15:33:18,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-22 15:33:18,116 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 15:33:18,116 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 15:33:18,135 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-22 15:33:18,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-07-22 15:33:18,317 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 15:33:18,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 15:33:18,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1931219048, now seen corresponding path program 1 times [2022-07-22 15:33:18,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 15:33:18,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230902854] [2022-07-22 15:33:18,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:33:18,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 15:33:18,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 15:33:18,368 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:33:18,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 15:33:18,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230902854] [2022-07-22 15:33:18,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230902854] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 15:33:18,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815469144] [2022-07-22 15:33:18,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:33:18,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 15:33:18,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 15:33:18,370 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 15:33:18,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 15:33:18,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 15:33:18,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-22 15:33:18,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 15:33:18,562 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:33:18,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 15:33:18,655 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 15:33:18,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815469144] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 15:33:18,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-22 15:33:18,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 8] total 12 [2022-07-22 15:33:18,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327935120] [2022-07-22 15:33:18,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 15:33:18,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 15:33:18,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 15:33:18,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 15:33:18,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-07-22 15:33:18,657 INFO L87 Difference]: Start difference. First operand 18 states and 23 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2022-07-22 15:33:20,670 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 15:33:22,790 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 15:33:24,991 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 15:33:25,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 15:33:25,129 INFO L93 Difference]: Finished difference Result 31 states and 41 transitions. [2022-07-22 15:33:25,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 15:33:25,129 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 15 [2022-07-22 15:33:25,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 15:33:25,130 INFO L225 Difference]: With dead ends: 31 [2022-07-22 15:33:25,130 INFO L226 Difference]: Without dead ends: 27 [2022-07-22 15:33:25,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-07-22 15:33:25,130 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 1 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-07-22 15:33:25,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 16 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 3 Unknown, 0 Unchecked, 6.5s Time] [2022-07-22 15:33:25,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-07-22 15:33:25,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-07-22 15:33:25,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 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) [2022-07-22 15:33:25,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2022-07-22 15:33:25,134 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 15 [2022-07-22 15:33:25,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 15:33:25,134 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2022-07-22 15:33:25,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2022-07-22 15:33:25,134 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2022-07-22 15:33:25,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-22 15:33:25,134 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 15:33:25,134 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 15:33:25,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 15:33:25,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 15:33:25,336 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 15:33:25,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 15:33:25,336 INFO L85 PathProgramCache]: Analyzing trace with hash -527836022, now seen corresponding path program 1 times [2022-07-22 15:33:25,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 15:33:25,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26751958] [2022-07-22 15:33:25,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:33:25,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 15:33:25,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 15:33:25,400 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 15:33:25,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 15:33:25,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26751958] [2022-07-22 15:33:25,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26751958] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 15:33:25,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270224037] [2022-07-22 15:33:25,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:33:25,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 15:33:25,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 15:33:25,402 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 15:33:25,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 15:33:25,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 15:33:25,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-22 15:33:25,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 15:33:25,669 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:33:25,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 15:33:25,835 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-22 15:33:25,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270224037] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 15:33:25,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-22 15:33:25,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 10] total 14 [2022-07-22 15:33:25,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706203902] [2022-07-22 15:33:25,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 15:33:25,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 15:33:25,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 15:33:25,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 15:33:25,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-07-22 15:33:25,836 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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) [2022-07-22 15:33:27,854 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 15:33:28,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 15:33:28,075 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2022-07-22 15:33:28,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 15:33:28,075 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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) Word has length 19 [2022-07-22 15:33:28,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 15:33:28,076 INFO L225 Difference]: With dead ends: 27 [2022-07-22 15:33:28,076 INFO L226 Difference]: Without dead ends: 0 [2022-07-22 15:33:28,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-07-22 15:33:28,076 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-22 15:33:28,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 9 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-22 15:33:28,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-22 15:33:28,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-22 15:33:28,077 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) [2022-07-22 15:33:28,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-22 15:33:28,078 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2022-07-22 15:33:28,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 15:33:28,078 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-22 15:33:28,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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) [2022-07-22 15:33:28,078 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-22 15:33:28,078 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-22 15:33:28,080 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-22 15:33:28,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 15:33:28,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 15:33:28,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-22 15:33:28,317 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-22 15:33:28,317 INFO L899 garLoopResultBuilder]: For program point L27(lines 27 30) no Hoare annotation was computed. [2022-07-22 15:33:28,317 INFO L899 garLoopResultBuilder]: For program point L25(lines 25 30) no Hoare annotation was computed. [2022-07-22 15:33:28,317 INFO L899 garLoopResultBuilder]: For program point L27-2(lines 23 30) no Hoare annotation was computed. [2022-07-22 15:33:28,317 INFO L899 garLoopResultBuilder]: For program point L23(lines 23 30) no Hoare annotation was computed. [2022-07-22 15:33:28,318 INFO L895 garLoopResultBuilder]: At program point L21-2(lines 21 32) the Hoare annotation is: (= (mod |ULTIMATE.start_main_~l~0#1| 4294967296) (mod (+ |ULTIMATE.start_main_~v4~0#1| |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|) 4294967296)) [2022-07-22 15:33:28,318 INFO L899 garLoopResultBuilder]: For program point L21-3(lines 21 32) no Hoare annotation was computed. [2022-07-22 15:33:28,318 INFO L899 garLoopResultBuilder]: For program point L9(lines 9 11) no Hoare annotation was computed. [2022-07-22 15:33:28,318 INFO L902 garLoopResultBuilder]: At program point L9-2(lines 8 13) the Hoare annotation is: true [2022-07-22 15:33:28,318 INFO L902 garLoopResultBuilder]: At program point L34(lines 16 35) the Hoare annotation is: true [2022-07-22 15:33:28,318 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-22 15:33:28,318 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-22 15:33:28,318 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-22 15:33:28,319 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2022-07-22 15:33:28,319 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2022-07-22 15:33:28,320 INFO L899 garLoopResultBuilder]: For program point L10(line 10) no Hoare annotation was computed. [2022-07-22 15:33:28,323 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-07-22 15:33:28,325 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-22 15:33:28,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 03:33:28 BoogieIcfgContainer [2022-07-22 15:33:28,334 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-22 15:33:28,335 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 15:33:28,335 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 15:33:28,335 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 15:33:28,336 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 03:33:07" (3/4) ... [2022-07-22 15:33:28,341 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-22 15:33:28,348 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2022-07-22 15:33:28,348 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-22 15:33:28,348 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-22 15:33:28,348 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-22 15:33:28,369 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-22 15:33:28,371 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 15:33:28,371 INFO L158 Benchmark]: Toolchain (without parser) took 23508.28ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 58.1MB in the beginning and 65.9MB in the end (delta: -7.7MB). Peak memory consumption was 13.3MB. Max. memory is 16.1GB. [2022-07-22 15:33:28,371 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 96.5MB. Free memory is still 75.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 15:33:28,372 INFO L158 Benchmark]: CACSL2BoogieTranslator took 126.67ms. Allocated memory is still 96.5MB. Free memory was 57.9MB in the beginning and 74.7MB in the end (delta: -16.8MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. [2022-07-22 15:33:28,372 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.27ms. Allocated memory is still 96.5MB. Free memory was 74.7MB in the beginning and 73.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 15:33:28,372 INFO L158 Benchmark]: Boogie Preprocessor took 11.28ms. Allocated memory is still 96.5MB. Free memory was 73.2MB in the beginning and 72.3MB in the end (delta: 965.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 15:33:28,373 INFO L158 Benchmark]: RCFGBuilder took 2346.71ms. Allocated memory is still 96.5MB. Free memory was 71.9MB in the beginning and 62.6MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-22 15:33:28,373 INFO L158 Benchmark]: TraceAbstraction took 20965.53ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 62.1MB in the beginning and 68.0MB in the end (delta: -5.8MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. [2022-07-22 15:33:28,373 INFO L158 Benchmark]: Witness Printer took 35.95ms. Allocated memory is still 117.4MB. Free memory was 68.0MB in the beginning and 65.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 15:33:28,375 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 96.5MB. Free memory is still 75.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 126.67ms. Allocated memory is still 96.5MB. Free memory was 57.9MB in the beginning and 74.7MB in the end (delta: -16.8MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 18.27ms. Allocated memory is still 96.5MB. Free memory was 74.7MB in the beginning and 73.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 11.28ms. Allocated memory is still 96.5MB. Free memory was 73.2MB in the beginning and 72.3MB in the end (delta: 965.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 2346.71ms. Allocated memory is still 96.5MB. Free memory was 71.9MB in the beginning and 62.6MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 20965.53ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 62.1MB in the beginning and 68.0MB in the end (delta: -5.8MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. * Witness Printer took 35.95ms. Allocated memory is still 117.4MB. Free memory was 68.0MB in the beginning and 65.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s 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, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 20.9s, OverallIterations: 6, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 17.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8 mSolverCounterUnknown, 7 SdHoareTripleChecker+Valid, 17.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7 mSDsluCounter, 109 SdHoareTripleChecker+Invalid, 16.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 56 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 149 IncrementalHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 53 mSDtfsCounter, 149 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 147 GetRequests, 81 SyntacticMatches, 13 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=5, InterpolantAutomatonStates: 26, 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, 6 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 7 NumberOfFragments, 13 HoareAnnotationTreeSize, 3 FomulaSimplifications, 28 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 130 NumberOfCodeBlocks, 130 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 174 ConstructedInterpolants, 0 QuantifiedInterpolants, 1998 SizeOfPredicates, 24 NumberOfNonLiveVariables, 246 ConjunctsInSsa, 84 ConjunctsInUnsatCore, 14 InterpolantComputations, 6 PerfectInterpolantSequences, 41/72 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: 16]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 8]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: l % 4294967296 == (v4 + i + j + k) % 4294967296 RESULT: Ultimate proved your program to be correct! [2022-07-22 15:33:28,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE