./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec 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/bitvector/soft_float_5a.c.cil.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 6029375071a37af887817933cb6d522f173528f0 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-25 20:06:31,919 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-25 20:06:31,922 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-25 20:06:31,969 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-25 20:06:31,969 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-25 20:06:31,973 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-25 20:06:31,974 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-25 20:06:31,978 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-25 20:06:31,980 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-25 20:06:31,984 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-25 20:06:31,985 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-25 20:06:31,986 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-25 20:06:31,987 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-25 20:06:31,989 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-25 20:06:31,990 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-25 20:06:31,996 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-25 20:06:31,998 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-25 20:06:31,999 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-25 20:06:32,003 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-25 20:06:32,005 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-25 20:06:32,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-25 20:06:32,009 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-25 20:06:32,011 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-25 20:06:32,012 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-25 20:06:32,016 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-25 20:06:32,019 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-25 20:06:32,019 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-25 20:06:32,020 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-25 20:06:32,021 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-25 20:06:32,022 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-25 20:06:32,022 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-25 20:06:32,023 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-25 20:06:32,024 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-25 20:06:32,024 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-25 20:06:32,025 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-25 20:06:32,026 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-25 20:06:32,026 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-25 20:06:32,027 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-25 20:06:32,027 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-25 20:06:32,028 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-25 20:06:32,029 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-25 20:06:32,032 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-25 20:06:32,055 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-25 20:06:32,057 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-25 20:06:32,059 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-25 20:06:32,059 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-25 20:06:32,060 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-25 20:06:32,061 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-25 20:06:32,061 INFO L138 SettingsManager]: * Use SBE=true [2021-08-25 20:06:32,061 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-25 20:06:32,061 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-25 20:06:32,061 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-25 20:06:32,062 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-25 20:06:32,062 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-25 20:06:32,063 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-25 20:06:32,063 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-25 20:06:32,063 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-25 20:06:32,063 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-25 20:06:32,063 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-25 20:06:32,064 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-25 20:06:32,064 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-25 20:06:32,064 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-25 20:06:32,064 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-25 20:06:32,064 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-25 20:06:32,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-25 20:06:32,065 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-25 20:06:32,065 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-25 20:06:32,065 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-25 20:06:32,065 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-25 20:06:32,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-25 20:06:32,066 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-25 20:06:32,066 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-25 20:06:32,066 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6029375071a37af887817933cb6d522f173528f0 [2021-08-25 20:06:32,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-25 20:06:32,414 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-25 20:06:32,415 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-25 20:06:32,416 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-25 20:06:32,422 INFO L275 PluginConnector]: CDTParser initialized [2021-08-25 20:06:32,424 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2021-08-25 20:06:32,510 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/370735e0b/ed2032ed84a74b72bb615cda76cd6ac1/FLAG6e8a882c1 [2021-08-25 20:06:32,883 INFO L306 CDTParser]: Found 1 translation units. [2021-08-25 20:06:32,884 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2021-08-25 20:06:32,911 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/370735e0b/ed2032ed84a74b72bb615cda76cd6ac1/FLAG6e8a882c1 [2021-08-25 20:06:32,924 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/370735e0b/ed2032ed84a74b72bb615cda76cd6ac1 [2021-08-25 20:06:32,926 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-25 20:06:32,928 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-25 20:06:32,930 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-25 20:06:32,930 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-25 20:06:32,932 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-25 20:06:32,933 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 08:06:32" (1/1) ... [2021-08-25 20:06:32,933 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d22915e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:06:32, skipping insertion in model container [2021-08-25 20:06:32,933 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 08:06:32" (1/1) ... [2021-08-25 20:06:32,938 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-25 20:06:32,965 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-25 20:06:33,077 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/bitvector/soft_float_5a.c.cil.c[423,436] [2021-08-25 20:06:33,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-25 20:06:33,134 INFO L203 MainTranslator]: Completed pre-run [2021-08-25 20:06:33,159 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/bitvector/soft_float_5a.c.cil.c[423,436] [2021-08-25 20:06:33,193 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-25 20:06:33,205 INFO L208 MainTranslator]: Completed translation [2021-08-25 20:06:33,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:06:33 WrapperNode [2021-08-25 20:06:33,207 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-25 20:06:33,208 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-25 20:06:33,208 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-25 20:06:33,208 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-25 20:06:33,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:06:33" (1/1) ... [2021-08-25 20:06:33,228 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:06:33" (1/1) ... [2021-08-25 20:06:33,258 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-25 20:06:33,260 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-25 20:06:33,260 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-25 20:06:33,261 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-25 20:06:33,266 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:06:33" (1/1) ... [2021-08-25 20:06:33,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:06:33" (1/1) ... [2021-08-25 20:06:33,276 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:06:33" (1/1) ... [2021-08-25 20:06:33,276 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:06:33" (1/1) ... [2021-08-25 20:06:33,280 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:06:33" (1/1) ... [2021-08-25 20:06:33,293 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:06:33" (1/1) ... [2021-08-25 20:06:33,295 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:06:33" (1/1) ... [2021-08-25 20:06:33,300 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-25 20:06:33,302 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-25 20:06:33,302 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-25 20:06:33,302 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-25 20:06:33,303 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:06:33" (1/1) ... [2021-08-25 20:06:33,307 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-25 20:06:33,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-25 20:06:33,349 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) [2021-08-25 20:06:33,359 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 [2021-08-25 20:06:33,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-25 20:06:33,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-25 20:06:33,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-25 20:06:33,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-25 20:06:33,808 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-25 20:06:33,809 INFO L299 CfgBuilder]: Removed 24 assume(true) statements. [2021-08-25 20:06:33,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 08:06:33 BoogieIcfgContainer [2021-08-25 20:06:33,810 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-25 20:06:33,811 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-25 20:06:33,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-25 20:06:33,816 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-25 20:06:33,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 08:06:32" (1/3) ... [2021-08-25 20:06:33,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2032cbbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 08:06:33, skipping insertion in model container [2021-08-25 20:06:33,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:06:33" (2/3) ... [2021-08-25 20:06:33,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2032cbbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 08:06:33, skipping insertion in model container [2021-08-25 20:06:33,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 08:06:33" (3/3) ... [2021-08-25 20:06:33,818 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_5a.c.cil.c [2021-08-25 20:06:33,821 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-25 20:06:33,821 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-25 20:06:33,892 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-25 20:06:33,895 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 [2021-08-25 20:06:33,896 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-25 20:06:33,916 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 70 states have (on average 1.7714285714285714) internal successors, (124), 71 states have internal predecessors, (124), 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) [2021-08-25 20:06:33,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-25 20:06:33,920 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:06:33,920 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:06:33,921 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:06:33,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:06:33,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1243249868, now seen corresponding path program 1 times [2021-08-25 20:06:33,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 20:06:33,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708097147] [2021-08-25 20:06:33,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:06:33,944 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 20:06:34,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:06:34,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 20:06:34,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 20:06:34,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708097147] [2021-08-25 20:06:34,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708097147] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 20:06:34,204 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:06:34,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 20:06:34,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884683892] [2021-08-25 20:06:34,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 20:06:34,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 20:06:34,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 20:06:34,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:06:34,218 INFO L87 Difference]: Start difference. First operand has 72 states, 70 states have (on average 1.7714285714285714) internal successors, (124), 71 states have internal predecessors, (124), 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 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2021-08-25 20:06:34,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:06:34,275 INFO L93 Difference]: Finished difference Result 150 states and 251 transitions. [2021-08-25 20:06:34,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 20:06:34,278 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 25 [2021-08-25 20:06:34,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:06:34,300 INFO L225 Difference]: With dead ends: 150 [2021-08-25 20:06:34,300 INFO L226 Difference]: Without dead ends: 68 [2021-08-25 20:06:34,302 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:06:34,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-08-25 20:06:34,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2021-08-25 20:06:34,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.507462686567164) internal successors, (101), 67 states have internal predecessors, (101), 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) [2021-08-25 20:06:34,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 101 transitions. [2021-08-25 20:06:34,349 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 101 transitions. Word has length 25 [2021-08-25 20:06:34,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:06:34,349 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 101 transitions. [2021-08-25 20:06:34,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2021-08-25 20:06:34,350 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 101 transitions. [2021-08-25 20:06:34,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-08-25 20:06:34,350 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:06:34,350 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:06:34,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-25 20:06:34,351 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:06:34,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:06:34,365 INFO L82 PathProgramCache]: Analyzing trace with hash 464393210, now seen corresponding path program 1 times [2021-08-25 20:06:34,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 20:06:34,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454255619] [2021-08-25 20:06:34,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:06:34,366 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 20:06:34,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:06:34,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 20:06:34,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 20:06:34,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454255619] [2021-08-25 20:06:34,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454255619] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 20:06:34,468 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:06:34,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-25 20:06:34,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174458786] [2021-08-25 20:06:34,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-25 20:06:34,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 20:06:34,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-25 20:06:34,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-25 20:06:34,470 INFO L87 Difference]: Start difference. First operand 68 states and 101 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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) [2021-08-25 20:06:34,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:06:34,517 INFO L93 Difference]: Finished difference Result 88 states and 129 transitions. [2021-08-25 20:06:34,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-25 20:06:34,517 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 27 [2021-08-25 20:06:34,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:06:34,518 INFO L225 Difference]: With dead ends: 88 [2021-08-25 20:06:34,518 INFO L226 Difference]: Without dead ends: 68 [2021-08-25 20:06:34,519 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-25 20:06:34,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-08-25 20:06:34,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2021-08-25 20:06:34,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.492537313432836) internal successors, (100), 67 states have internal predecessors, (100), 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) [2021-08-25 20:06:34,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 100 transitions. [2021-08-25 20:06:34,524 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 100 transitions. Word has length 27 [2021-08-25 20:06:34,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:06:34,524 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 100 transitions. [2021-08-25 20:06:34,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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) [2021-08-25 20:06:34,524 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 100 transitions. [2021-08-25 20:06:34,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-08-25 20:06:34,525 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:06:34,525 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:06:34,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-25 20:06:34,525 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:06:34,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:06:34,525 INFO L82 PathProgramCache]: Analyzing trace with hash 722558648, now seen corresponding path program 1 times [2021-08-25 20:06:34,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 20:06:34,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044621185] [2021-08-25 20:06:34,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:06:34,526 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 20:06:34,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:06:34,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 20:06:34,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 20:06:34,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044621185] [2021-08-25 20:06:34,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044621185] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 20:06:34,597 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:06:34,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 20:06:34,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616420357] [2021-08-25 20:06:34,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 20:06:34,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 20:06:34,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 20:06:34,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:06:34,599 INFO L87 Difference]: Start difference. First operand 68 states and 100 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2021-08-25 20:06:34,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:06:34,647 INFO L93 Difference]: Finished difference Result 119 states and 172 transitions. [2021-08-25 20:06:34,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 20:06:34,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 27 [2021-08-25 20:06:34,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:06:34,648 INFO L225 Difference]: With dead ends: 119 [2021-08-25 20:06:34,648 INFO L226 Difference]: Without dead ends: 69 [2021-08-25 20:06:34,648 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:06:34,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-08-25 20:06:34,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 65. [2021-08-25 20:06:34,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.453125) internal successors, (93), 64 states have internal predecessors, (93), 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) [2021-08-25 20:06:34,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 93 transitions. [2021-08-25 20:06:34,652 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 93 transitions. Word has length 27 [2021-08-25 20:06:34,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:06:34,653 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 93 transitions. [2021-08-25 20:06:34,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2021-08-25 20:06:34,653 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 93 transitions. [2021-08-25 20:06:34,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-08-25 20:06:34,653 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:06:34,654 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:06:34,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-25 20:06:34,654 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:06:34,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:06:34,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1336799219, now seen corresponding path program 1 times [2021-08-25 20:06:34,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 20:06:34,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137213771] [2021-08-25 20:06:34,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:06:34,655 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 20:06:34,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:06:34,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 20:06:34,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 20:06:34,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137213771] [2021-08-25 20:06:34,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137213771] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 20:06:34,678 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:06:34,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 20:06:34,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135820603] [2021-08-25 20:06:34,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 20:06:34,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 20:06:34,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 20:06:34,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:06:34,680 INFO L87 Difference]: Start difference. First operand 65 states and 93 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2021-08-25 20:06:34,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:06:34,703 INFO L93 Difference]: Finished difference Result 129 states and 183 transitions. [2021-08-25 20:06:34,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 20:06:34,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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 30 [2021-08-25 20:06:34,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:06:34,704 INFO L225 Difference]: With dead ends: 129 [2021-08-25 20:06:34,704 INFO L226 Difference]: Without dead ends: 75 [2021-08-25 20:06:34,705 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:06:34,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-08-25 20:06:34,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2021-08-25 20:06:34,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.4225352112676057) internal successors, (101), 71 states have internal predecessors, (101), 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) [2021-08-25 20:06:34,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 101 transitions. [2021-08-25 20:06:34,710 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 101 transitions. Word has length 30 [2021-08-25 20:06:34,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:06:34,710 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 101 transitions. [2021-08-25 20:06:34,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2021-08-25 20:06:34,710 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 101 transitions. [2021-08-25 20:06:34,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-08-25 20:06:34,711 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:06:34,711 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:06:34,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-25 20:06:34,711 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:06:34,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:06:34,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1305570860, now seen corresponding path program 1 times [2021-08-25 20:06:34,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 20:06:34,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293989321] [2021-08-25 20:06:34,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:06:34,712 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 20:06:34,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:06:34,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 20:06:34,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 20:06:34,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293989321] [2021-08-25 20:06:34,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293989321] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 20:06:34,759 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:06:34,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-25 20:06:34,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885554117] [2021-08-25 20:06:34,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-25 20:06:34,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 20:06:34,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-25 20:06:34,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-25 20:06:34,761 INFO L87 Difference]: Start difference. First operand 72 states and 101 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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) [2021-08-25 20:06:34,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:06:34,830 INFO L93 Difference]: Finished difference Result 136 states and 189 transitions. [2021-08-25 20:06:34,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-25 20:06:34,831 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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 32 [2021-08-25 20:06:34,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:06:34,832 INFO L225 Difference]: With dead ends: 136 [2021-08-25 20:06:34,832 INFO L226 Difference]: Without dead ends: 73 [2021-08-25 20:06:34,832 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-25 20:06:34,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-08-25 20:06:34,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 67. [2021-08-25 20:06:34,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.393939393939394) internal successors, (92), 66 states have internal predecessors, (92), 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) [2021-08-25 20:06:34,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 92 transitions. [2021-08-25 20:06:34,836 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 92 transitions. Word has length 32 [2021-08-25 20:06:34,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:06:34,837 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 92 transitions. [2021-08-25 20:06:34,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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) [2021-08-25 20:06:34,837 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 92 transitions. [2021-08-25 20:06:34,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-25 20:06:34,837 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:06:34,838 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:06:34,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-25 20:06:34,838 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:06:34,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:06:34,838 INFO L82 PathProgramCache]: Analyzing trace with hash 734686790, now seen corresponding path program 1 times [2021-08-25 20:06:34,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 20:06:34,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865998210] [2021-08-25 20:06:34,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:06:34,839 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 20:06:34,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:06:34,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 20:06:34,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 20:06:34,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865998210] [2021-08-25 20:06:34,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865998210] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-25 20:06:34,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23219206] [2021-08-25 20:06:34,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:06:34,865 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-25 20:06:34,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-25 20:06:34,866 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) [2021-08-25 20:06:34,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-25 20:06:34,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:06:34,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-25 20:06:34,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-25 20:06:35,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 20:06:35,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23219206] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-25 20:06:35,014 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-25 20:06:35,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-08-25 20:06:35,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296008367] [2021-08-25 20:06:35,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-25 20:06:35,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 20:06:35,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-25 20:06:35,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-08-25 20:06:35,016 INFO L87 Difference]: Start difference. First operand 67 states and 92 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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) [2021-08-25 20:06:35,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:06:35,049 INFO L93 Difference]: Finished difference Result 160 states and 218 transitions. [2021-08-25 20:06:35,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-25 20:06:35,049 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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 33 [2021-08-25 20:06:35,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:06:35,050 INFO L225 Difference]: With dead ends: 160 [2021-08-25 20:06:35,050 INFO L226 Difference]: Without dead ends: 103 [2021-08-25 20:06:35,051 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.2ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-08-25 20:06:35,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-08-25 20:06:35,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 72. [2021-08-25 20:06:35,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.380281690140845) internal successors, (98), 71 states have internal predecessors, (98), 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) [2021-08-25 20:06:35,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 98 transitions. [2021-08-25 20:06:35,055 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 98 transitions. Word has length 33 [2021-08-25 20:06:35,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:06:35,056 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 98 transitions. [2021-08-25 20:06:35,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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) [2021-08-25 20:06:35,056 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 98 transitions. [2021-08-25 20:06:35,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-08-25 20:06:35,056 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:06:35,057 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:06:35,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-25 20:06:35,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-08-25 20:06:35,274 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:06:35,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:06:35,274 INFO L82 PathProgramCache]: Analyzing trace with hash -861199835, now seen corresponding path program 1 times [2021-08-25 20:06:35,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 20:06:35,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719300825] [2021-08-25 20:06:35,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:06:35,275 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 20:06:35,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:06:35,345 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 20:06:35,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 20:06:35,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719300825] [2021-08-25 20:06:35,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719300825] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-25 20:06:35,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549150480] [2021-08-25 20:06:35,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:06:35,348 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-25 20:06:35,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-25 20:06:35,361 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) [2021-08-25 20:06:35,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-25 20:06:35,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:06:35,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-25 20:06:35,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-25 20:06:35,577 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-25 20:06:35,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549150480] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 20:06:35,578 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-25 20:06:35,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2021-08-25 20:06:35,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969548106] [2021-08-25 20:06:35,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-25 20:06:35,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 20:06:35,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-25 20:06:35,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-08-25 20:06:35,579 INFO L87 Difference]: Start difference. First operand 72 states and 98 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 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) [2021-08-25 20:06:35,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:06:35,677 INFO L93 Difference]: Finished difference Result 159 states and 215 transitions. [2021-08-25 20:06:35,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-25 20:06:35,678 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 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 35 [2021-08-25 20:06:35,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:06:35,679 INFO L225 Difference]: With dead ends: 159 [2021-08-25 20:06:35,679 INFO L226 Difference]: Without dead ends: 90 [2021-08-25 20:06:35,680 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 50.9ms TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-08-25 20:06:35,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-08-25 20:06:35,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 62. [2021-08-25 20:06:35,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.360655737704918) internal successors, (83), 61 states have internal predecessors, (83), 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) [2021-08-25 20:06:35,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 83 transitions. [2021-08-25 20:06:35,684 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 83 transitions. Word has length 35 [2021-08-25 20:06:35,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:06:35,684 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 83 transitions. [2021-08-25 20:06:35,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 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) [2021-08-25 20:06:35,684 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 83 transitions. [2021-08-25 20:06:35,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-08-25 20:06:35,685 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:06:35,685 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:06:35,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-25 20:06:35,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-08-25 20:06:35,902 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:06:35,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:06:35,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1367220671, now seen corresponding path program 1 times [2021-08-25 20:06:35,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 20:06:35,903 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571534794] [2021-08-25 20:06:35,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:06:35,903 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 20:06:35,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:06:35,948 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 20:06:35,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 20:06:35,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571534794] [2021-08-25 20:06:35,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571534794] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-25 20:06:35,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644869511] [2021-08-25 20:06:35,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:06:35,949 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-25 20:06:35,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-25 20:06:35,950 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) [2021-08-25 20:06:35,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-25 20:06:36,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:06:36,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-25 20:06:36,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-25 20:06:36,115 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-25 20:06:36,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644869511] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 20:06:36,116 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-25 20:06:36,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2021-08-25 20:06:36,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090968754] [2021-08-25 20:06:36,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-25 20:06:36,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 20:06:36,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-25 20:06:36,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-08-25 20:06:36,118 INFO L87 Difference]: Start difference. First operand 62 states and 83 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 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) [2021-08-25 20:06:36,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:06:36,174 INFO L93 Difference]: Finished difference Result 77 states and 97 transitions. [2021-08-25 20:06:36,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-25 20:06:36,175 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 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 37 [2021-08-25 20:06:36,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:06:36,175 INFO L225 Difference]: With dead ends: 77 [2021-08-25 20:06:36,175 INFO L226 Difference]: Without dead ends: 72 [2021-08-25 20:06:36,176 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 35.7ms TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-08-25 20:06:36,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-08-25 20:06:36,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 67. [2021-08-25 20:06:36,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.3333333333333333) internal successors, (88), 66 states have internal predecessors, (88), 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) [2021-08-25 20:06:36,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 88 transitions. [2021-08-25 20:06:36,184 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 88 transitions. Word has length 37 [2021-08-25 20:06:36,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:06:36,184 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 88 transitions. [2021-08-25 20:06:36,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 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) [2021-08-25 20:06:36,185 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 88 transitions. [2021-08-25 20:06:36,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-08-25 20:06:36,185 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:06:36,185 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:06:36,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-25 20:06:36,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-25 20:06:36,386 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:06:36,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:06:36,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1369067713, now seen corresponding path program 1 times [2021-08-25 20:06:36,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 20:06:36,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238600697] [2021-08-25 20:06:36,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:06:36,387 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 20:06:36,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:06:36,445 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-25 20:06:36,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 20:06:36,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238600697] [2021-08-25 20:06:36,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238600697] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 20:06:36,446 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:06:36,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-25 20:06:36,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204226452] [2021-08-25 20:06:36,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-25 20:06:36,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 20:06:36,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-25 20:06:36,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-25 20:06:36,448 INFO L87 Difference]: Start difference. First operand 67 states and 88 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2021-08-25 20:06:36,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:06:36,466 INFO L93 Difference]: Finished difference Result 72 states and 92 transitions. [2021-08-25 20:06:36,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-25 20:06:36,467 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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 37 [2021-08-25 20:06:36,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:06:36,467 INFO L225 Difference]: With dead ends: 72 [2021-08-25 20:06:36,468 INFO L226 Difference]: Without dead ends: 62 [2021-08-25 20:06:36,468 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.8ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-25 20:06:36,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-08-25 20:06:36,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-08-25 20:06:36,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.3114754098360655) internal successors, (80), 61 states have internal predecessors, (80), 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) [2021-08-25 20:06:36,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 80 transitions. [2021-08-25 20:06:36,472 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 80 transitions. Word has length 37 [2021-08-25 20:06:36,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:06:36,472 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 80 transitions. [2021-08-25 20:06:36,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2021-08-25 20:06:36,472 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 80 transitions. [2021-08-25 20:06:36,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-08-25 20:06:36,473 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:06:36,473 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:06:36,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-25 20:06:36,474 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:06:36,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:06:36,474 INFO L82 PathProgramCache]: Analyzing trace with hash -896100667, now seen corresponding path program 1 times [2021-08-25 20:06:36,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 20:06:36,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788096677] [2021-08-25 20:06:36,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:06:36,475 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 20:06:36,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:06:36,547 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 20:06:36,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 20:06:36,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788096677] [2021-08-25 20:06:36,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788096677] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-25 20:06:36,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593088610] [2021-08-25 20:06:36,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:06:36,548 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-25 20:06:36,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-25 20:06:36,570 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) [2021-08-25 20:06:36,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-25 20:06:36,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:06:36,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 16 conjunts are in the unsatisfiable core [2021-08-25 20:06:36,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-25 20:06:36,880 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-25 20:06:36,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593088610] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 20:06:36,881 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-25 20:06:36,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2021-08-25 20:06:36,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143706104] [2021-08-25 20:06:36,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-25 20:06:36,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 20:06:36,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-25 20:06:36,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-08-25 20:06:36,882 INFO L87 Difference]: Start difference. First operand 62 states and 80 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 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) [2021-08-25 20:06:37,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:06:37,038 INFO L93 Difference]: Finished difference Result 91 states and 113 transitions. [2021-08-25 20:06:37,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-25 20:06:37,038 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 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 38 [2021-08-25 20:06:37,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:06:37,039 INFO L225 Difference]: With dead ends: 91 [2021-08-25 20:06:37,039 INFO L226 Difference]: Without dead ends: 66 [2021-08-25 20:06:37,041 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 105.0ms TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2021-08-25 20:06:37,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-08-25 20:06:37,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 62. [2021-08-25 20:06:37,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.278688524590164) internal successors, (78), 61 states have internal predecessors, (78), 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) [2021-08-25 20:06:37,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 78 transitions. [2021-08-25 20:06:37,055 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 78 transitions. Word has length 38 [2021-08-25 20:06:37,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:06:37,057 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 78 transitions. [2021-08-25 20:06:37,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 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) [2021-08-25 20:06:37,057 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 78 transitions. [2021-08-25 20:06:37,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-08-25 20:06:37,059 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:06:37,059 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:06:37,083 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-08-25 20:06:37,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-25 20:06:37,277 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:06:37,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:06:37,277 INFO L82 PathProgramCache]: Analyzing trace with hash -626672262, now seen corresponding path program 1 times [2021-08-25 20:06:37,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 20:06:37,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252752072] [2021-08-25 20:06:37,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:06:37,278 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 20:06:37,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:06:37,338 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 20:06:37,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 20:06:37,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252752072] [2021-08-25 20:06:37,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252752072] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-25 20:06:37,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98318741] [2021-08-25 20:06:37,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:06:37,339 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-25 20:06:37,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-25 20:06:37,355 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-25 20:06:37,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-25 20:06:37,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:06:37,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 22 conjunts are in the unsatisfiable core [2021-08-25 20:06:37,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-25 20:06:37,648 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-25 20:06:37,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98318741] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 20:06:37,649 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-25 20:06:37,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2021-08-25 20:06:37,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647409672] [2021-08-25 20:06:37,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-25 20:06:37,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 20:06:37,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-25 20:06:37,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-08-25 20:06:37,650 INFO L87 Difference]: Start difference. First operand 62 states and 78 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 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) [2021-08-25 20:06:37,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:06:37,787 INFO L93 Difference]: Finished difference Result 67 states and 83 transitions. [2021-08-25 20:06:37,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-25 20:06:37,787 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 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 42 [2021-08-25 20:06:37,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:06:37,788 INFO L225 Difference]: With dead ends: 67 [2021-08-25 20:06:37,788 INFO L226 Difference]: Without dead ends: 0 [2021-08-25 20:06:37,789 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 95.6ms TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2021-08-25 20:06:37,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-25 20:06:37,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-25 20:06:37,789 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) [2021-08-25 20:06:37,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-25 20:06:37,790 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 42 [2021-08-25 20:06:37,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:06:37,790 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-25 20:06:37,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 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) [2021-08-25 20:06:37,790 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-25 20:06:37,790 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-25 20:06:37,793 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-25 20:06:37,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-25 20:06:38,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-08-25 20:06:38,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-25 20:06:38,034 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-25 20:06:38,041 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-25 20:06:38,044 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-25 20:06:38,045 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-25 20:06:38,045 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-25 20:06:38,046 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-25 20:06:38,048 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-25 20:06:38,048 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-25 20:06:38,049 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-25 20:06:38,051 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-25 20:06:38,052 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-25 20:06:38,052 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-25 20:06:38,054 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-25 20:06:38,056 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-25 20:06:38,057 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-25 20:06:38,059 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-25 20:06:38,059 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-25 20:06:38,060 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-25 20:06:38,061 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-25 20:06:38,061 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-25 20:06:38,062 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-25 20:06:38,063 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-25 20:06:38,064 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-25 20:06:38,064 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-25 20:06:38,120 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-25 20:06:38,120 INFO L857 garLoopResultBuilder]: For program point L235(lines 235 244) no Hoare annotation was computed. [2021-08-25 20:06:38,121 INFO L857 garLoopResultBuilder]: For program point L235-2(lines 235 244) no Hoare annotation was computed. [2021-08-25 20:06:38,121 INFO L857 garLoopResultBuilder]: For program point L252(lines 252 256) no Hoare annotation was computed. [2021-08-25 20:06:38,121 INFO L857 garLoopResultBuilder]: For program point L186(lines 186 203) no Hoare annotation was computed. [2021-08-25 20:06:38,121 INFO L857 garLoopResultBuilder]: For program point L252-2(lines 252 256) no Hoare annotation was computed. [2021-08-25 20:06:38,121 INFO L857 garLoopResultBuilder]: For program point L186-2(lines 186 203) no Hoare annotation was computed. [2021-08-25 20:06:38,121 INFO L857 garLoopResultBuilder]: For program point L21(lines 21 26) no Hoare annotation was computed. [2021-08-25 20:06:38,121 INFO L857 garLoopResultBuilder]: For program point L21-1(lines 21 26) no Hoare annotation was computed. [2021-08-25 20:06:38,121 INFO L857 garLoopResultBuilder]: For program point L21-2(lines 21 26) no Hoare annotation was computed. [2021-08-25 20:06:38,122 INFO L857 garLoopResultBuilder]: For program point L21-3(lines 21 26) no Hoare annotation was computed. [2021-08-25 20:06:38,122 INFO L853 garLoopResultBuilder]: At program point L71(lines 20 73) the Hoare annotation is: (and (= ULTIMATE.start_base2flt_~m 0) (= ULTIMATE.start_base2flt_~__retres4~0 0)) [2021-08-25 20:06:38,122 INFO L853 garLoopResultBuilder]: At program point L71-1(lines 20 73) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2021-08-25 20:06:38,122 INFO L853 garLoopResultBuilder]: At program point L71-2(lines 20 73) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2021-08-25 20:06:38,122 INFO L853 garLoopResultBuilder]: At program point L71-3(lines 20 73) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2021-08-25 20:06:38,122 INFO L857 garLoopResultBuilder]: For program point L187(lines 187 192) no Hoare annotation was computed. [2021-08-25 20:06:38,123 INFO L857 garLoopResultBuilder]: For program point L171(lines 171 176) no Hoare annotation was computed. [2021-08-25 20:06:38,123 INFO L853 garLoopResultBuilder]: At program point L72(lines 16 74) the Hoare annotation is: (and (= ULTIMATE.start_base2flt_~m 0) (= |ULTIMATE.start_base2flt_#res| 0) (= ULTIMATE.start_base2flt_~__retres4~0 0)) [2021-08-25 20:06:38,123 INFO L857 garLoopResultBuilder]: For program point L39(lines 39 43) no Hoare annotation was computed. [2021-08-25 20:06:38,123 INFO L853 garLoopResultBuilder]: At program point L72-1(lines 16 74) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2021-08-25 20:06:38,123 INFO L853 garLoopResultBuilder]: At program point L39-1(lines 29 44) the Hoare annotation is: false [2021-08-25 20:06:38,123 INFO L853 garLoopResultBuilder]: At program point L72-2(lines 16 74) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2021-08-25 20:06:38,123 INFO L857 garLoopResultBuilder]: For program point L39-2(lines 39 43) no Hoare annotation was computed. [2021-08-25 20:06:38,124 INFO L853 garLoopResultBuilder]: At program point L72-3(lines 16 74) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2021-08-25 20:06:38,124 INFO L853 garLoopResultBuilder]: At program point L39-3(lines 29 44) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2021-08-25 20:06:38,124 INFO L857 garLoopResultBuilder]: For program point L39-4(lines 39 43) no Hoare annotation was computed. [2021-08-25 20:06:38,124 INFO L853 garLoopResultBuilder]: At program point L39-5(lines 29 44) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2021-08-25 20:06:38,124 INFO L857 garLoopResultBuilder]: For program point L39-6(lines 39 43) no Hoare annotation was computed. [2021-08-25 20:06:38,124 INFO L853 garLoopResultBuilder]: At program point L39-7(lines 29 44) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2021-08-25 20:06:38,124 INFO L857 garLoopResultBuilder]: For program point L238(lines 238 242) no Hoare annotation was computed. [2021-08-25 20:06:38,124 INFO L857 garLoopResultBuilder]: For program point L238-2(lines 238 242) no Hoare annotation was computed. [2021-08-25 20:06:38,125 INFO L857 garLoopResultBuilder]: For program point L8(lines 8 10) no Hoare annotation was computed. [2021-08-25 20:06:38,125 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-25 20:06:38,125 INFO L857 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2021-08-25 20:06:38,125 INFO L853 garLoopResultBuilder]: At program point L208(lines 149 210) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~sb~0 1) (= ULTIMATE.start_main_~tmp~2 1)) (<= (+ ULTIMATE.start_main_~sb~0 1) 0) (and (= ULTIMATE.start_main_~zero~0 0) (= ULTIMATE.start_mulflt_~__retres10~1 0))) [2021-08-25 20:06:38,125 INFO L857 garLoopResultBuilder]: For program point L27(lines 27 67) no Hoare annotation was computed. [2021-08-25 20:06:38,125 INFO L857 garLoopResultBuilder]: For program point L27-1(lines 27 67) no Hoare annotation was computed. [2021-08-25 20:06:38,125 INFO L857 garLoopResultBuilder]: For program point L27-2(lines 27 67) no Hoare annotation was computed. [2021-08-25 20:06:38,126 INFO L857 garLoopResultBuilder]: For program point L27-3(lines 27 67) no Hoare annotation was computed. [2021-08-25 20:06:38,126 INFO L853 garLoopResultBuilder]: At program point L209(lines 139 211) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~zero~0 0) (= ULTIMATE.start_mulflt_~__retres10~1 0) (= |ULTIMATE.start_mulflt_#res| 0)) (and (= ULTIMATE.start_main_~sb~0 1) (= ULTIMATE.start_main_~tmp~2 1)) (<= (+ ULTIMATE.start_main_~sb~0 1) 0)) [2021-08-25 20:06:38,126 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-25 20:06:38,126 INFO L857 garLoopResultBuilder]: For program point L177(lines 177 182) no Hoare annotation was computed. [2021-08-25 20:06:38,126 INFO L857 garLoopResultBuilder]: For program point L195(lines 195 200) no Hoare annotation was computed. [2021-08-25 20:06:38,126 INFO L857 garLoopResultBuilder]: For program point L30(lines 29 44) no Hoare annotation was computed. [2021-08-25 20:06:38,126 INFO L857 garLoopResultBuilder]: For program point L30-1(lines 29 44) no Hoare annotation was computed. [2021-08-25 20:06:38,127 INFO L857 garLoopResultBuilder]: For program point L30-2(lines 29 44) no Hoare annotation was computed. [2021-08-25 20:06:38,127 INFO L857 garLoopResultBuilder]: For program point L30-3(lines 29 44) no Hoare annotation was computed. [2021-08-25 20:06:38,127 INFO L853 garLoopResultBuilder]: At program point L65(lines 27 67) the Hoare annotation is: false [2021-08-25 20:06:38,127 INFO L853 garLoopResultBuilder]: At program point L65-1(lines 27 67) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2021-08-25 20:06:38,127 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-25 20:06:38,127 INFO L853 garLoopResultBuilder]: At program point L65-2(lines 27 67) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2021-08-25 20:06:38,127 INFO L853 garLoopResultBuilder]: At program point L65-3(lines 27 67) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2021-08-25 20:06:38,128 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2021-08-25 20:06:38,128 INFO L853 garLoopResultBuilder]: At program point L49-2(lines 49 64) the Hoare annotation is: false [2021-08-25 20:06:38,128 INFO L853 garLoopResultBuilder]: At program point L49-5(lines 49 64) the Hoare annotation is: false [2021-08-25 20:06:38,128 INFO L853 garLoopResultBuilder]: At program point L49-8(lines 49 64) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2021-08-25 20:06:38,128 INFO L853 garLoopResultBuilder]: At program point L49-11(lines 49 64) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2021-08-25 20:06:38,128 INFO L857 garLoopResultBuilder]: For program point L248(lines 248 264) no Hoare annotation was computed. [2021-08-25 20:06:38,128 INFO L860 garLoopResultBuilder]: At program point L248-1(lines 248 264) the Hoare annotation is: true [2021-08-25 20:06:38,128 INFO L857 garLoopResultBuilder]: For program point L50(lines 49 64) no Hoare annotation was computed. [2021-08-25 20:06:38,129 INFO L857 garLoopResultBuilder]: For program point L50-1(lines 49 64) no Hoare annotation was computed. [2021-08-25 20:06:38,129 INFO L857 garLoopResultBuilder]: For program point L50-2(lines 49 64) no Hoare annotation was computed. [2021-08-25 20:06:38,129 INFO L857 garLoopResultBuilder]: For program point L50-3(lines 49 64) no Hoare annotation was computed. [2021-08-25 20:06:38,129 INFO L857 garLoopResultBuilder]: For program point L249(lines 249 258) no Hoare annotation was computed. [2021-08-25 20:06:38,129 INFO L857 garLoopResultBuilder]: For program point L249-2(lines 249 258) no Hoare annotation was computed. [2021-08-25 20:06:38,129 INFO L857 garLoopResultBuilder]: For program point L150(lines 150 156) no Hoare annotation was computed. [2021-08-25 20:06:38,129 INFO L857 garLoopResultBuilder]: For program point L150-2(lines 149 210) no Hoare annotation was computed. [2021-08-25 20:06:38,130 INFO L857 garLoopResultBuilder]: For program point L51(lines 49 64) no Hoare annotation was computed. [2021-08-25 20:06:38,130 INFO L857 garLoopResultBuilder]: For program point L51-1(lines 49 64) no Hoare annotation was computed. [2021-08-25 20:06:38,130 INFO L857 garLoopResultBuilder]: For program point L51-2(lines 49 64) no Hoare annotation was computed. [2021-08-25 20:06:38,130 INFO L857 garLoopResultBuilder]: For program point L51-3(lines 49 64) no Hoare annotation was computed. [2021-08-25 20:06:38,130 INFO L860 garLoopResultBuilder]: At program point L266(lines 212 268) the Hoare annotation is: true [2021-08-25 20:06:38,134 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-25 20:06:38,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 08:06:38 BoogieIcfgContainer [2021-08-25 20:06:38,146 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-25 20:06:38,147 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-25 20:06:38,147 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-25 20:06:38,147 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-25 20:06:38,148 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 08:06:33" (3/4) ... [2021-08-25 20:06:38,150 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-25 20:06:38,159 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-08-25 20:06:38,160 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-08-25 20:06:38,160 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-25 20:06:38,160 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-25 20:06:38,178 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (m == 0 && \result == 0) && __retres4 == 0 [2021-08-25 20:06:38,180 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((zero == 0 && __retres10 == 0) && \result == 0) || (sb == 1 && tmp == 1)) || sb + 1 <= 0 [2021-08-25 20:06:38,198 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-25 20:06:38,198 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-25 20:06:38,199 INFO L168 Benchmark]: Toolchain (without parser) took 5271.02 ms. Allocated memory was 69.2 MB in the beginning and 172.0 MB in the end (delta: 102.8 MB). Free memory was 53.4 MB in the beginning and 109.3 MB in the end (delta: -56.0 MB). Peak memory consumption was 46.9 MB. Max. memory is 16.1 GB. [2021-08-25 20:06:38,200 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 69.2 MB. Free memory is still 51.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-25 20:06:38,200 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.53 ms. Allocated memory is still 69.2 MB. Free memory was 53.2 MB in the beginning and 51.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-25 20:06:38,200 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.70 ms. Allocated memory is still 69.2 MB. Free memory was 51.1 MB in the beginning and 49.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-25 20:06:38,201 INFO L168 Benchmark]: Boogie Preprocessor took 41.04 ms. Allocated memory is still 69.2 MB. Free memory was 48.7 MB in the beginning and 47.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-25 20:06:38,201 INFO L168 Benchmark]: RCFGBuilder took 508.44 ms. Allocated memory was 69.2 MB in the beginning and 111.1 MB in the end (delta: 41.9 MB). Free memory was 47.1 MB in the beginning and 82.0 MB in the end (delta: -34.9 MB). Peak memory consumption was 20.8 MB. Max. memory is 16.1 GB. [2021-08-25 20:06:38,201 INFO L168 Benchmark]: TraceAbstraction took 4335.43 ms. Allocated memory was 111.1 MB in the beginning and 172.0 MB in the end (delta: 60.8 MB). Free memory was 81.5 MB in the beginning and 114.6 MB in the end (delta: -33.1 MB). Peak memory consumption was 27.4 MB. Max. memory is 16.1 GB. [2021-08-25 20:06:38,201 INFO L168 Benchmark]: Witness Printer took 51.28 ms. Allocated memory is still 172.0 MB. Free memory was 114.6 MB in the beginning and 109.3 MB in the end (delta: 5.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-08-25 20:06:38,203 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 69.2 MB. Free memory is still 51.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 277.53 ms. Allocated memory is still 69.2 MB. Free memory was 53.2 MB in the beginning and 51.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.70 ms. Allocated memory is still 69.2 MB. Free memory was 51.1 MB in the beginning and 49.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.04 ms. Allocated memory is still 69.2 MB. Free memory was 48.7 MB in the beginning and 47.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 508.44 ms. Allocated memory was 69.2 MB in the beginning and 111.1 MB in the end (delta: 41.9 MB). Free memory was 47.1 MB in the beginning and 82.0 MB in the end (delta: -34.9 MB). Peak memory consumption was 20.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4335.43 ms. Allocated memory was 111.1 MB in the beginning and 172.0 MB in the end (delta: 60.8 MB). Free memory was 81.5 MB in the beginning and 114.6 MB in the end (delta: -33.1 MB). Peak memory consumption was 27.4 MB. Max. memory is 16.1 GB. * Witness Printer took 51.28 ms. Allocated memory is still 172.0 MB. Free memory was 114.6 MB in the beginning and 109.3 MB in the end (delta: 5.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 9]: 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, 72 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4243.0ms, OverallIterations: 11, TraceHistogramMax: 2, EmptinessCheckTime: 13.9ms, AutomataDifference: 804.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 91.6ms, InitialAbstractionConstructionTime: 18.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 906 SDtfs, 342 SDslu, 1714 SDs, 0 SdLazy, 515 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 333.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 247 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 332.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=72occurred in iteration=0, InterpolantAutomatonStates: 60, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 89.6ms AutomataMinimizationTime, 11 MinimizatonAttempts, 81 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 24 LocationsWithAnnotation, 24 PreInvPairs, 58 NumberOfFragments, 108 HoareAnnotationTreeSize, 24 FomulaSimplifications, 393 FormulaSimplificationTreeSizeReduction, 32.8ms HoareSimplificationTime, 24 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 50.8ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 72.4ms SsaConstructionTime, 305.5ms SatisfiabilityAnalysisTime, 1162.6ms InterpolantComputationTime, 548 NumberOfCodeBlocks, 548 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 532 ConstructedInterpolants, 0 QuantifiedInterpolants, 947 SizeOfPredicates, 28 NumberOfNonLiveVariables, 794 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 16 InterpolantComputations, 10 PerfectInterpolantSequences, 15/31 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: zero == 0 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: m == 0 && __retres4 == 0 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 149]: Loop Invariant Derived loop invariant: ((sb == 1 && tmp == 1) || sb + 1 <= 0) || (zero == 0 && __retres10 == 0) - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 139]: Loop Invariant Derived loop invariant: (((zero == 0 && __retres10 == 0) && \result == 0) || (sb == 1 && tmp == 1)) || sb + 1 <= 0 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 248]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 212]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: (m == 0 && \result == 0) && __retres4 == 0 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2021-08-25 20:06:38,237 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...