./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/fermat1-ll.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/nla-digbench/fermat1-ll.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 437b10cc0003be4e4527f11cc3dda8c982e115b0 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 04:47:38,993 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 04:47:38,996 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 04:47:39,033 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 04:47:39,034 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 04:47:39,036 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 04:47:39,037 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 04:47:39,041 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 04:47:39,043 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 04:47:39,046 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 04:47:39,047 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 04:47:39,048 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 04:47:39,048 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 04:47:39,050 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 04:47:39,051 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 04:47:39,056 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 04:47:39,056 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 04:47:39,057 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 04:47:39,059 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 04:47:39,063 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 04:47:39,064 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 04:47:39,065 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 04:47:39,066 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 04:47:39,067 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 04:47:39,071 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 04:47:39,072 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 04:47:39,072 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 04:47:39,073 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 04:47:39,073 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 04:47:39,074 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 04:47:39,074 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 04:47:39,074 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 04:47:39,076 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 04:47:39,076 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 04:47:39,077 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 04:47:39,077 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 04:47:39,078 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 04:47:39,078 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 04:47:39,078 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 04:47:39,079 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 04:47:39,081 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 04:47:39,082 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 04:47:39,110 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 04:47:39,110 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 04:47:39,110 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 04:47:39,111 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 04:47:39,112 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 04:47:39,112 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 04:47:39,112 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 04:47:39,113 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 04:47:39,113 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 04:47:39,113 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 04:47:39,114 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 04:47:39,114 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 04:47:39,114 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 04:47:39,115 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 04:47:39,115 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 04:47:39,115 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 04:47:39,115 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 04:47:39,115 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 04:47:39,115 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 04:47:39,116 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 04:47:39,123 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 04:47:39,127 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 04:47:39,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 04:47:39,128 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 04:47:39,128 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 04:47:39,129 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 04:47:39,129 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 04:47:39,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 04:47:39,129 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 04:47:39,129 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 04:47:39,129 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 437b10cc0003be4e4527f11cc3dda8c982e115b0 [2021-08-26 04:47:39,384 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 04:47:39,396 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 04:47:39,398 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 04:47:39,399 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 04:47:39,399 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 04:47:39,400 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/fermat1-ll.c [2021-08-26 04:47:39,466 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfb50d1e7/93a19562245448beae0b0679dedfa7bd/FLAGb997d0e1d [2021-08-26 04:47:39,819 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 04:47:39,820 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/fermat1-ll.c [2021-08-26 04:47:39,825 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfb50d1e7/93a19562245448beae0b0679dedfa7bd/FLAGb997d0e1d [2021-08-26 04:47:39,836 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfb50d1e7/93a19562245448beae0b0679dedfa7bd [2021-08-26 04:47:39,838 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 04:47:39,839 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 04:47:39,840 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 04:47:39,840 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 04:47:39,842 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 04:47:39,842 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 04:47:39" (1/1) ... [2021-08-26 04:47:39,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e19d11c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:39, skipping insertion in model container [2021-08-26 04:47:39,843 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 04:47:39" (1/1) ... [2021-08-26 04:47:39,848 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 04:47:39,856 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 04:47:39,963 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/nla-digbench/fermat1-ll.c[535,548] [2021-08-26 04:47:39,993 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 04:47:40,004 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 04:47:40,015 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/nla-digbench/fermat1-ll.c[535,548] [2021-08-26 04:47:40,041 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 04:47:40,053 INFO L208 MainTranslator]: Completed translation [2021-08-26 04:47:40,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:40 WrapperNode [2021-08-26 04:47:40,054 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 04:47:40,055 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 04:47:40,055 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 04:47:40,056 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 04:47:40,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:40" (1/1) ... [2021-08-26 04:47:40,070 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:40" (1/1) ... [2021-08-26 04:47:40,088 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 04:47:40,089 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 04:47:40,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 04:47:40,089 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 04:47:40,094 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:40" (1/1) ... [2021-08-26 04:47:40,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:40" (1/1) ... [2021-08-26 04:47:40,097 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:40" (1/1) ... [2021-08-26 04:47:40,097 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:40" (1/1) ... [2021-08-26 04:47:40,106 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:40" (1/1) ... [2021-08-26 04:47:40,109 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:40" (1/1) ... [2021-08-26 04:47:40,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:40" (1/1) ... [2021-08-26 04:47:40,116 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 04:47:40,117 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 04:47:40,118 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 04:47:40,118 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 04:47:40,118 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:40" (1/1) ... [2021-08-26 04:47:40,123 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 04:47:40,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:47:40,154 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) [2021-08-26 04:47:40,213 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 [2021-08-26 04:47:40,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 04:47:40,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 04:47:40,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 04:47:40,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 04:47:40,501 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 04:47:40,501 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-08-26 04:47:40,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 04:47:40 BoogieIcfgContainer [2021-08-26 04:47:40,502 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 04:47:40,504 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 04:47:40,504 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 04:47:40,506 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 04:47:40,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 04:47:39" (1/3) ... [2021-08-26 04:47:40,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9a9970f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 04:47:40, skipping insertion in model container [2021-08-26 04:47:40,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:40" (2/3) ... [2021-08-26 04:47:40,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9a9970f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 04:47:40, skipping insertion in model container [2021-08-26 04:47:40,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 04:47:40" (3/3) ... [2021-08-26 04:47:40,508 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat1-ll.c [2021-08-26 04:47:40,511 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 04:47:40,511 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-08-26 04:47:40,536 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 04:47:40,540 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 [2021-08-26 04:47:40,540 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-26 04:47:40,548 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 28 states have internal predecessors, (43), 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) [2021-08-26 04:47:40,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-26 04:47:40,550 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:47:40,551 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:47:40,551 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-08-26 04:47:40,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:47:40,565 INFO L82 PathProgramCache]: Analyzing trace with hash -594062832, now seen corresponding path program 1 times [2021-08-26 04:47:40,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:47:40,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109087966] [2021-08-26 04:47:40,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:40,583 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:47:40,662 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:47:40,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1732506616] [2021-08-26 04:47:40,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:40,664 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:40,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:47:40,665 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) [2021-08-26 04:47:40,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-26 04:47:40,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 04:47:40,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 1 conjunts are in the unsatisfiable core [2021-08-26 04:47:40,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:47:40,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:47:40,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:47:40,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109087966] [2021-08-26 04:47:40,790 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:47:40,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732506616] [2021-08-26 04:47:40,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732506616] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 04:47:40,791 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 04:47:40,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 04:47:40,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308117044] [2021-08-26 04:47:40,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 04:47:40,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:47:40,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 04:47:40,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 04:47:40,807 INFO L87 Difference]: Start difference. First operand has 29 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 28 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-08-26 04:47:40,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:47:40,817 INFO L93 Difference]: Finished difference Result 55 states and 82 transitions. [2021-08-26 04:47:40,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 04:47:40,819 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2021-08-26 04:47:40,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:47:40,823 INFO L225 Difference]: With dead ends: 55 [2021-08-26 04:47:40,823 INFO L226 Difference]: Without dead ends: 25 [2021-08-26 04:47:40,825 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 04:47:40,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-08-26 04:47:40,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-08-26 04:47:40,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 24 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) [2021-08-26 04:47:40,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2021-08-26 04:47:40,847 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 9 [2021-08-26 04:47:40,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:47:40,847 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-08-26 04:47:40,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-08-26 04:47:40,847 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2021-08-26 04:47:40,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-26 04:47:40,848 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:47:40,848 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:47:40,880 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-08-26 04:47:41,083 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,SelfDestructingSolverStorable0 [2021-08-26 04:47:41,084 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-08-26 04:47:41,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:47:41,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1182791572, now seen corresponding path program 1 times [2021-08-26 04:47:41,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:47:41,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630354034] [2021-08-26 04:47:41,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:41,085 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:47:41,105 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:47:41,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [503106513] [2021-08-26 04:47:41,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:41,106 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:41,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:47:41,120 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) [2021-08-26 04:47:41,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-26 04:47:41,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 04:47:41,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-26 04:47:41,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:47:41,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:47:41,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:47:41,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630354034] [2021-08-26 04:47:41,315 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:47:41,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503106513] [2021-08-26 04:47:41,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503106513] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 04:47:41,316 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 04:47:41,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 04:47:41,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956307658] [2021-08-26 04:47:41,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 04:47:41,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:47:41,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 04:47:41,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 04:47:41,318 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2021-08-26 04:47:43,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:47:43,394 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2021-08-26 04:47:43,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 04:47:43,395 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2021-08-26 04:47:43,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:47:43,395 INFO L225 Difference]: With dead ends: 35 [2021-08-26 04:47:43,395 INFO L226 Difference]: Without dead ends: 33 [2021-08-26 04:47:43,396 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 04:47:43,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-08-26 04:47:43,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 27. [2021-08-26 04:47:43,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 26 states have internal predecessors, (29), 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) [2021-08-26 04:47:43,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2021-08-26 04:47:43,400 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 9 [2021-08-26 04:47:43,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:47:43,400 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2021-08-26 04:47:43,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2021-08-26 04:47:43,400 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2021-08-26 04:47:43,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-26 04:47:43,401 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:47:43,401 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:47:43,417 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-08-26 04:47:43,617 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,SelfDestructingSolverStorable1 [2021-08-26 04:47:43,617 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-08-26 04:47:43,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:47:43,618 INFO L82 PathProgramCache]: Analyzing trace with hash 636977420, now seen corresponding path program 1 times [2021-08-26 04:47:43,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:47:43,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312574582] [2021-08-26 04:47:43,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:43,618 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:47:43,625 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:47:43,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [775983207] [2021-08-26 04:47:43,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:43,626 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:43,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:47:43,642 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) [2021-08-26 04:47:43,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-26 04:47:43,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 04:47:43,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-26 04:47:43,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:47:43,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:47:43,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:47:43,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312574582] [2021-08-26 04:47:43,876 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:47:43,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775983207] [2021-08-26 04:47:43,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775983207] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 04:47:43,877 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 04:47:43,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-26 04:47:43,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643289638] [2021-08-26 04:47:43,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 04:47:43,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:47:43,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 04:47:43,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-26 04:47:43,878 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:44,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:47:44,061 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2021-08-26 04:47:44,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 04:47:44,062 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-08-26 04:47:44,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:47:44,062 INFO L225 Difference]: With dead ends: 27 [2021-08-26 04:47:44,062 INFO L226 Difference]: Without dead ends: 0 [2021-08-26 04:47:44,063 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 77.0ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-08-26 04:47:44,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-26 04:47:44,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-26 04:47:44,063 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) [2021-08-26 04:47:44,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-26 04:47:44,064 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2021-08-26 04:47:44,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:47:44,064 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-26 04:47:44,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:44,064 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-26 04:47:44,064 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-26 04:47:44,066 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 04:47:44,066 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 04:47:44,067 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 04:47:44,067 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 04:47:44,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-26 04:47:44,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:44,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-26 04:47:44,302 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 04:47:44,304 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 04:47:44,305 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 04:47:44,306 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 04:47:44,306 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 04:47:44,309 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 04:47:44,310 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 04:47:49,856 WARN L207 SmtUtils]: Spent 5.53 s on a formula simplification. DAG size of input: 34 DAG size of output: 27 [2021-08-26 04:47:49,868 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-08-26 04:47:49,869 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-26 04:47:49,869 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-26 04:47:49,869 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-08-26 04:47:49,869 INFO L853 garLoopResultBuilder]: At program point L12-2(lines 35 36) the Hoare annotation is: (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* 2 ULTIMATE.start_main_~u~0) (* 4 ULTIMATE.start_main_~A~0) (* ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~v~0) (* 4 ULTIMATE.start_main_~r~0)) (+ (* ULTIMATE.start_main_~u~0 ULTIMATE.start_main_~u~0) (* 2 ULTIMATE.start_main_~v~0)))) [2021-08-26 04:47:49,869 INFO L857 garLoopResultBuilder]: For program point L12-3(lines 12 15) no Hoare annotation was computed. [2021-08-26 04:47:49,869 INFO L853 garLoopResultBuilder]: At program point L12-5(lines 40 41) the Hoare annotation is: (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* 2 ULTIMATE.start_main_~u~0) (* 4 ULTIMATE.start_main_~A~0) (* ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~v~0) (* 4 ULTIMATE.start_main_~r~0)) (+ (* ULTIMATE.start_main_~u~0 ULTIMATE.start_main_~u~0) (* 2 ULTIMATE.start_main_~v~0)))) [2021-08-26 04:47:49,869 INFO L857 garLoopResultBuilder]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2021-08-26 04:47:49,870 INFO L853 garLoopResultBuilder]: At program point L12-8(lines 48 49) the Hoare annotation is: (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* 2 ULTIMATE.start_main_~u~0) (* 4 ULTIMATE.start_main_~A~0) (* ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~v~0) (* 4 ULTIMATE.start_main_~r~0)) (+ (* ULTIMATE.start_main_~u~0 ULTIMATE.start_main_~u~0) (* 2 ULTIMATE.start_main_~v~0)))) [2021-08-26 04:47:49,870 INFO L857 garLoopResultBuilder]: For program point L12-9(lines 12 15) no Hoare annotation was computed. [2021-08-26 04:47:49,870 INFO L860 garLoopResultBuilder]: At program point L12-11(lines 11 17) the Hoare annotation is: true [2021-08-26 04:47:49,870 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-08-26 04:47:49,870 INFO L857 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-08-26 04:47:49,870 INFO L857 garLoopResultBuilder]: For program point L46-1(lines 33 53) no Hoare annotation was computed. [2021-08-26 04:47:49,870 INFO L857 garLoopResultBuilder]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2021-08-26 04:47:49,871 INFO L853 garLoopResultBuilder]: At program point L46-2(lines 33 53) the Hoare annotation is: (let ((.cse0 (= (+ (* 2 ULTIMATE.start_main_~u~0) (* 4 ULTIMATE.start_main_~A~0) (* ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~v~0) (* 4 ULTIMATE.start_main_~r~0)) (+ (* ULTIMATE.start_main_~u~0 ULTIMATE.start_main_~u~0) (* 2 ULTIMATE.start_main_~v~0))))) (or (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0) (and (= (mod (+ ULTIMATE.start_main_~u~0 1) (- 2)) 0) (= ULTIMATE.start_main_~v~0 1) .cse0))) [2021-08-26 04:47:49,871 INFO L857 garLoopResultBuilder]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2021-08-26 04:47:49,871 INFO L857 garLoopResultBuilder]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2021-08-26 04:47:49,871 INFO L853 garLoopResultBuilder]: At program point L38-2(lines 38 44) the Hoare annotation is: (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* 2 ULTIMATE.start_main_~u~0) (* 4 ULTIMATE.start_main_~A~0) (* ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~v~0) (* 4 ULTIMATE.start_main_~r~0)) (+ (* ULTIMATE.start_main_~u~0 ULTIMATE.start_main_~u~0) (* 2 ULTIMATE.start_main_~v~0)))) [2021-08-26 04:47:49,871 INFO L860 garLoopResultBuilder]: At program point L56(lines 19 57) the Hoare annotation is: true [2021-08-26 04:47:49,871 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-26 04:47:49,871 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-08-26 04:47:49,872 INFO L857 garLoopResultBuilder]: For program point L8(lines 8 10) no Hoare annotation was computed. [2021-08-26 04:47:49,872 INFO L857 garLoopResultBuilder]: For program point L8-1(lines 8 10) no Hoare annotation was computed. [2021-08-26 04:47:49,872 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-26 04:47:49,872 INFO L857 garLoopResultBuilder]: For program point L33-2(lines 33 53) no Hoare annotation was computed. [2021-08-26 04:47:49,872 INFO L857 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2021-08-26 04:47:49,872 INFO L857 garLoopResultBuilder]: For program point L9-2(line 9) no Hoare annotation was computed. [2021-08-26 04:47:49,872 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-08-26 04:47:49,875 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 04:47:49,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 04:47:49 BoogieIcfgContainer [2021-08-26 04:47:49,900 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 04:47:49,901 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 04:47:49,901 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 04:47:49,901 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 04:47:49,902 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 04:47:40" (3/4) ... [2021-08-26 04:47:49,903 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-26 04:47:49,911 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-08-26 04:47:49,912 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-26 04:47:49,912 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 04:47:49,912 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 04:47:49,953 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 04:47:49,957 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 04:47:49,958 INFO L168 Benchmark]: Toolchain (without parser) took 10118.65 ms. Allocated memory was 56.6 MB in the beginning and 98.6 MB in the end (delta: 41.9 MB). Free memory was 34.9 MB in the beginning and 60.7 MB in the end (delta: -25.8 MB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. [2021-08-26 04:47:49,958 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 56.6 MB. Free memory was 38.3 MB in the beginning and 38.2 MB in the end (delta: 46.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 04:47:49,958 INFO L168 Benchmark]: CACSL2BoogieTranslator took 214.62 ms. Allocated memory was 56.6 MB in the beginning and 81.8 MB in the end (delta: 25.2 MB). Free memory was 34.7 MB in the beginning and 64.3 MB in the end (delta: -29.6 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. [2021-08-26 04:47:49,959 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.99 ms. Allocated memory is still 81.8 MB. Free memory was 64.3 MB in the beginning and 62.6 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 04:47:49,959 INFO L168 Benchmark]: Boogie Preprocessor took 27.92 ms. Allocated memory is still 81.8 MB. Free memory was 62.6 MB in the beginning and 61.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 04:47:49,961 INFO L168 Benchmark]: RCFGBuilder took 385.24 ms. Allocated memory is still 81.8 MB. Free memory was 61.3 MB in the beginning and 46.1 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-08-26 04:47:49,961 INFO L168 Benchmark]: TraceAbstraction took 9396.53 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 45.6 MB in the beginning and 64.1 MB in the end (delta: -18.5 MB). Peak memory consumption was 362.0 kB. Max. memory is 16.1 GB. [2021-08-26 04:47:49,961 INFO L168 Benchmark]: Witness Printer took 56.48 ms. Allocated memory is still 98.6 MB. Free memory was 64.1 MB in the beginning and 60.7 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-26 04:47:49,962 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 56.6 MB. Free memory was 38.3 MB in the beginning and 38.2 MB in the end (delta: 46.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 214.62 ms. Allocated memory was 56.6 MB in the beginning and 81.8 MB in the end (delta: 25.2 MB). Free memory was 34.7 MB in the beginning and 64.3 MB in the end (delta: -29.6 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.99 ms. Allocated memory is still 81.8 MB. Free memory was 64.3 MB in the beginning and 62.6 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.92 ms. Allocated memory is still 81.8 MB. Free memory was 62.6 MB in the beginning and 61.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 385.24 ms. Allocated memory is still 81.8 MB. Free memory was 61.3 MB in the beginning and 46.1 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9396.53 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 45.6 MB in the beginning and 64.1 MB in the end (delta: -18.5 MB). Peak memory consumption was 362.0 kB. Max. memory is 16.1 GB. * Witness Printer took 56.48 ms. Allocated memory is still 98.6 MB. Free memory was 64.1 MB in the beginning and 60.7 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 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: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: 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, 29 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 9339.9ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 6.0ms, AutomataDifference: 2292.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 5570.3ms, InitialAbstractionConstructionTime: 5.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 58 SDtfs, 30 SDslu, 45 SDs, 0 SdLazy, 60 SolverSat, 21 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2165.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 104.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=0, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 16.6ms AutomataMinimizationTime, 3 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 15 NumberOfFragments, 160 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 10.2ms HoareSimplificationTime, 7 FomulaSimplificationsInter, 19 FormulaSimplificationTreeSizeReductionInter, 5555.4ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 27.4ms SsaConstructionTime, 54.0ms SatisfiabilityAnalysisTime, 313.9ms InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 148 SizeOfPredicates, 13 NumberOfNonLiveVariables, 193 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: 1 == cond && 2 * u + 4 * A + v * v + 4 * r == u * u + 2 * v - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 48]: Loop Invariant Derived loop invariant: 1 == cond && 2 * u + 4 * A + v * v + 4 * r == u * u + 2 * v - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: (1 == cond && 2 * u + 4 * A + v * v + 4 * r == u * u + 2 * v) || (((u + 1) % -2 == 0 && v == 1) && 2 * u + 4 * A + v * v + 4 * r == u * u + 2 * v) - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: 1 == cond && 2 * u + 4 * A + v * v + 4 * r == u * u + 2 * v - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: 1 == cond && 2 * u + 4 * A + v * v + 4 * r == u * u + 2 * v RESULT: Ultimate proved your program to be correct! [2021-08-26 04:47:49,997 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...