./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/inv_square_int.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 03d7b7b3 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -ea -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/float-benchs/inv_square_int.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 9d6111f1172e07b7206075be423d21f33b529e79943d78b2db976fd996371e2d --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-20 16:24:07,925 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-20 16:24:07,928 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-20 16:24:07,970 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-20 16:24:07,971 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-20 16:24:07,974 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-20 16:24:07,975 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-20 16:24:07,977 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-20 16:24:07,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-20 16:24:07,983 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-20 16:24:07,984 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-20 16:24:07,985 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-20 16:24:07,986 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-20 16:24:07,988 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-20 16:24:07,989 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-20 16:24:07,991 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-20 16:24:07,993 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-20 16:24:07,994 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-20 16:24:07,996 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-20 16:24:08,001 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-20 16:24:08,002 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-20 16:24:08,003 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-20 16:24:08,004 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-20 16:24:08,005 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-20 16:24:08,011 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-20 16:24:08,011 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-20 16:24:08,012 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-20 16:24:08,013 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-20 16:24:08,014 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-20 16:24:08,015 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-20 16:24:08,015 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-20 16:24:08,015 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-20 16:24:08,016 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-20 16:24:08,017 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-20 16:24:08,018 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-20 16:24:08,018 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-20 16:24:08,019 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-20 16:24:08,020 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-20 16:24:08,020 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-20 16:24:08,021 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-20 16:24:08,021 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-20 16:24:08,022 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-02-20 16:24:08,059 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-20 16:24:08,060 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-20 16:24:08,060 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-20 16:24:08,060 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-20 16:24:08,061 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-20 16:24:08,061 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-20 16:24:08,062 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-20 16:24:08,062 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-20 16:24:08,062 INFO L138 SettingsManager]: * Use SBE=true [2022-02-20 16:24:08,062 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-20 16:24:08,063 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-20 16:24:08,063 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-20 16:24:08,064 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-20 16:24:08,064 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-20 16:24:08,064 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-20 16:24:08,064 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-20 16:24:08,064 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-20 16:24:08,064 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-20 16:24:08,065 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-20 16:24:08,065 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-20 16:24:08,065 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-20 16:24:08,065 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-20 16:24:08,065 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-20 16:24:08,066 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-20 16:24:08,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 16:24:08,066 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-20 16:24:08,066 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-20 16:24:08,068 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-20 16:24:08,068 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-20 16:24:08,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-20 16:24:08,068 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-20 16:24:08,068 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-02-20 16:24:08,069 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-20 16:24:08,069 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d6111f1172e07b7206075be423d21f33b529e79943d78b2db976fd996371e2d [2022-02-20 16:24:08,284 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-20 16:24:08,304 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-20 16:24:08,306 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-20 16:24:08,307 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-20 16:24:08,308 INFO L275 PluginConnector]: CDTParser initialized [2022-02-20 16:24:08,309 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/inv_square_int.c [2022-02-20 16:24:08,372 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28b40b0d7/acbe1b3bcfe8475fbf8f41a0b56246bb/FLAG9147436f8 [2022-02-20 16:24:08,657 INFO L306 CDTParser]: Found 1 translation units. [2022-02-20 16:24:08,657 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_square_int.c [2022-02-20 16:24:08,662 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28b40b0d7/acbe1b3bcfe8475fbf8f41a0b56246bb/FLAG9147436f8 [2022-02-20 16:24:09,099 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28b40b0d7/acbe1b3bcfe8475fbf8f41a0b56246bb [2022-02-20 16:24:09,101 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-20 16:24:09,102 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-20 16:24:09,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-20 16:24:09,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-20 16:24:09,108 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-20 16:24:09,109 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 04:24:09" (1/1) ... [2022-02-20 16:24:09,111 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45d4c483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:24:09, skipping insertion in model container [2022-02-20 16:24:09,111 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 04:24:09" (1/1) ... [2022-02-20 16:24:09,124 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-20 16:24:09,133 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-20 16:24:09,229 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_square_int.c[482,495] [2022-02-20 16:24:09,239 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 16:24:09,246 INFO L203 MainTranslator]: Completed pre-run [2022-02-20 16:24:09,256 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_square_int.c[482,495] [2022-02-20 16:24:09,259 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 16:24:09,270 INFO L208 MainTranslator]: Completed translation [2022-02-20 16:24:09,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:24:09 WrapperNode [2022-02-20 16:24:09,270 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-20 16:24:09,271 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-20 16:24:09,271 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-20 16:24:09,272 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-20 16:24:09,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:24:09" (1/1) ... [2022-02-20 16:24:09,283 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:24:09" (1/1) ... [2022-02-20 16:24:09,300 INFO L137 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 31 [2022-02-20 16:24:09,301 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-20 16:24:09,302 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-20 16:24:09,302 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-20 16:24:09,302 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-20 16:24:09,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:24:09" (1/1) ... [2022-02-20 16:24:09,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:24:09" (1/1) ... [2022-02-20 16:24:09,310 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:24:09" (1/1) ... [2022-02-20 16:24:09,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:24:09" (1/1) ... [2022-02-20 16:24:09,315 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:24:09" (1/1) ... [2022-02-20 16:24:09,317 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:24:09" (1/1) ... [2022-02-20 16:24:09,317 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:24:09" (1/1) ... [2022-02-20 16:24:09,319 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-20 16:24:09,319 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-20 16:24:09,319 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-20 16:24:09,320 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-20 16:24:09,323 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:24:09" (1/1) ... [2022-02-20 16:24:09,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 16:24:09,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 16:24:09,354 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-20 16:24:09,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-20 16:24:09,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-20 16:24:09,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-20 16:24:09,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-20 16:24:09,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-20 16:24:09,422 INFO L234 CfgBuilder]: Building ICFG [2022-02-20 16:24:09,423 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-20 16:24:09,532 INFO L275 CfgBuilder]: Performing block encoding [2022-02-20 16:24:09,537 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-20 16:24:09,537 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-20 16:24:09,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 04:24:09 BoogieIcfgContainer [2022-02-20 16:24:09,539 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-20 16:24:09,541 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-20 16:24:09,541 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-20 16:24:09,549 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-20 16:24:09,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 04:24:09" (1/3) ... [2022-02-20 16:24:09,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e6830fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 04:24:09, skipping insertion in model container [2022-02-20 16:24:09,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:24:09" (2/3) ... [2022-02-20 16:24:09,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e6830fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 04:24:09, skipping insertion in model container [2022-02-20 16:24:09,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 04:24:09" (3/3) ... [2022-02-20 16:24:09,555 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_square_int.c [2022-02-20 16:24:09,559 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-20 16:24:09,559 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-20 16:24:09,591 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-20 16:24:09,603 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-20 16:24:09,603 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-20 16:24:09,615 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:24:09,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-02-20 16:24:09,619 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 16:24:09,620 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-02-20 16:24:09,620 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 16:24:09,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 16:24:09,627 INFO L85 PathProgramCache]: Analyzing trace with hash 889508713, now seen corresponding path program 1 times [2022-02-20 16:24:09,637 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 16:24:09,638 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452386495] [2022-02-20 16:24:09,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 16:24:09,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 16:24:09,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 16:24:09,801 INFO L290 TraceCheckUtils]: 0: Hoare triple {14#true} assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3); {14#true} is VALID [2022-02-20 16:24:09,802 INFO L290 TraceCheckUtils]: 1: Hoare triple {14#true} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~z~0#1;assume -2147483648 <= main_#t~nondet4#1 && main_#t~nondet4#1 <= 2147483647;main_~x~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;assume { :begin_inline_assume_abort_if_not } true;assume_abort_if_not_#in~cond#1 := (if main_~x~0#1 >= -10 && main_~x~0#1 <= 10 then 1 else 0);havoc assume_abort_if_not_~cond#1;assume_abort_if_not_~cond#1 := assume_abort_if_not_#in~cond#1; {14#true} is VALID [2022-02-20 16:24:09,803 INFO L290 TraceCheckUtils]: 2: Hoare triple {14#true} assume 0 == assume_abort_if_not_~cond#1;assume false; {15#false} is VALID [2022-02-20 16:24:09,804 INFO L290 TraceCheckUtils]: 3: Hoare triple {15#false} assume { :end_inline_assume_abort_if_not } true;main_~y~0#1 := ~someBinaryArithmeticFLOAToperation(~convertINTToFLOAT(main_~x~0#1 * main_~x~0#1), 2.0);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if ~someBinaryFLOATComparisonOperation(main_~y~0#1, 0.0) then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; {15#false} is VALID [2022-02-20 16:24:09,804 INFO L290 TraceCheckUtils]: 4: Hoare triple {15#false} assume 0 == __VERIFIER_assert_~cond#1; {15#false} is VALID [2022-02-20 16:24:09,804 INFO L290 TraceCheckUtils]: 5: Hoare triple {15#false} assume !false; {15#false} is VALID [2022-02-20 16:24:09,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 16:24:09,806 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-20 16:24:09,807 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452386495] [2022-02-20 16:24:09,808 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452386495] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-20 16:24:09,808 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-20 16:24:09,808 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-20 16:24:09,810 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146702741] [2022-02-20 16:24:09,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-20 16:24:09,814 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-02-20 16:24:09,817 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-02-20 16:24:09,820 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:24:09,848 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 6 edges. 6 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 16:24:09,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-02-20 16:24:09,849 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-20 16:24:09,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-02-20 16:24:09,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-20 16:24:09,905 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 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) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:24:09,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 16:24:09,947 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-02-20 16:24:09,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-20 16:24:09,947 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-02-20 16:24:09,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-20 16:24:09,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:24:09,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 20 transitions. [2022-02-20 16:24:09,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:24:09,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 20 transitions. [2022-02-20 16:24:09,953 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 20 transitions. [2022-02-20 16:24:09,987 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 16:24:09,993 INFO L225 Difference]: With dead ends: 19 [2022-02-20 16:24:09,993 INFO L226 Difference]: Without dead ends: 7 [2022-02-20 16:24:09,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-20 16:24:09,998 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-20 16:24:09,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-20 16:24:10,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2022-02-20 16:24:10,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2022-02-20 16:24:10,033 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-20 16:24:10,034 INFO L82 GeneralOperation]: Start isEquivalent. First operand 7 states. Second operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:24:10,034 INFO L74 IsIncluded]: Start isIncluded. First operand 7 states. Second operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:24:10,035 INFO L87 Difference]: Start difference. First operand 7 states. Second operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:24:10,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 16:24:10,043 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2022-02-20 16:24:10,043 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2022-02-20 16:24:10,043 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 16:24:10,043 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 16:24:10,043 INFO L74 IsIncluded]: Start isIncluded. First operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 7 states. [2022-02-20 16:24:10,044 INFO L87 Difference]: Start difference. First operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 7 states. [2022-02-20 16:24:10,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 16:24:10,045 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2022-02-20 16:24:10,045 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2022-02-20 16:24:10,045 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 16:24:10,045 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 16:24:10,045 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-20 16:24:10,046 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-20 16:24:10,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:24:10,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2022-02-20 16:24:10,048 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2022-02-20 16:24:10,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-20 16:24:10,049 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2022-02-20 16:24:10,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:24:10,049 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2022-02-20 16:24:10,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-02-20 16:24:10,050 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 16:24:10,050 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-02-20 16:24:10,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-20 16:24:10,050 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 16:24:10,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 16:24:10,051 INFO L85 PathProgramCache]: Analyzing trace with hash 889568295, now seen corresponding path program 1 times [2022-02-20 16:24:10,051 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 16:24:10,052 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673234736] [2022-02-20 16:24:10,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 16:24:10,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 16:24:10,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 16:24:10,073 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-20 16:24:10,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 16:24:10,096 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-20 16:24:10,097 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-20 16:24:10,098 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-20 16:24:10,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-20 16:24:10,102 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-20 16:24:10,105 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-20 16:24:10,123 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2022-02-20 16:24:10,124 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2022-02-20 16:24:10,124 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2022-02-20 16:24:10,124 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2022-02-20 16:24:10,124 WARN L170 areAnnotationChecker]: L10 has no Hoare annotation [2022-02-20 16:24:10,124 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2022-02-20 16:24:10,124 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2022-02-20 16:24:10,124 WARN L170 areAnnotationChecker]: L13-1 has no Hoare annotation [2022-02-20 16:24:10,124 WARN L170 areAnnotationChecker]: L13-1 has no Hoare annotation [2022-02-20 16:24:10,124 WARN L170 areAnnotationChecker]: L13-3 has no Hoare annotation [2022-02-20 16:24:10,124 WARN L170 areAnnotationChecker]: L26 has no Hoare annotation [2022-02-20 16:24:10,125 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2022-02-20 16:24:10,125 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-02-20 16:24:10,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.02 04:24:10 BoogieIcfgContainer [2022-02-20 16:24:10,125 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-20 16:24:10,126 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-02-20 16:24:10,126 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-02-20 16:24:10,126 INFO L275 PluginConnector]: Witness Printer initialized [2022-02-20 16:24:10,126 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 04:24:09" (3/4) ... [2022-02-20 16:24:10,128 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-02-20 16:24:10,128 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-02-20 16:24:10,129 INFO L158 Benchmark]: Toolchain (without parser) took 1027.05ms. Allocated memory was 79.7MB in the beginning and 100.7MB in the end (delta: 21.0MB). Free memory was 38.1MB in the beginning and 47.0MB in the end (delta: -8.8MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. [2022-02-20 16:24:10,129 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 79.7MB. Free memory is still 54.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 16:24:10,130 INFO L158 Benchmark]: CACSL2BoogieTranslator took 165.11ms. Allocated memory was 79.7MB in the beginning and 100.7MB in the end (delta: 21.0MB). Free memory was 37.8MB in the beginning and 72.8MB in the end (delta: -35.1MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. [2022-02-20 16:24:10,130 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.77ms. Allocated memory is still 100.7MB. Free memory was 72.8MB in the beginning and 71.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-20 16:24:10,130 INFO L158 Benchmark]: Boogie Preprocessor took 16.58ms. Allocated memory is still 100.7MB. Free memory was 71.3MB in the beginning and 70.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 16:24:10,130 INFO L158 Benchmark]: RCFGBuilder took 219.90ms. Allocated memory is still 100.7MB. Free memory was 70.3MB in the beginning and 75.8MB in the end (delta: -5.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-02-20 16:24:10,131 INFO L158 Benchmark]: TraceAbstraction took 584.69ms. Allocated memory is still 100.7MB. Free memory was 75.3MB in the beginning and 47.0MB in the end (delta: 28.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-02-20 16:24:10,131 INFO L158 Benchmark]: Witness Printer took 2.32ms. Allocated memory is still 100.7MB. Free memory is still 47.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 16:24:10,133 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 79.7MB. Free memory is still 54.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 165.11ms. Allocated memory was 79.7MB in the beginning and 100.7MB in the end (delta: 21.0MB). Free memory was 37.8MB in the beginning and 72.8MB in the end (delta: -35.1MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.77ms. Allocated memory is still 100.7MB. Free memory was 72.8MB in the beginning and 71.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.58ms. Allocated memory is still 100.7MB. Free memory was 71.3MB in the beginning and 70.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 219.90ms. Allocated memory is still 100.7MB. Free memory was 70.3MB in the beginning and 75.8MB in the end (delta: -5.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 584.69ms. Allocated memory is still 100.7MB. Free memory was 75.3MB in the beginning and 47.0MB in the end (delta: 28.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Witness Printer took 2.32ms. Allocated memory is still 100.7MB. Free memory is still 47.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 24, overapproximation of someBinaryArithmeticFLOAToperation at line 23. Possible FailurePath: [L17] int x; [L18] float y, z; [L20] x = __VERIFIER_nondet_int() [L21] CALL assume_abort_if_not(x >= -10 && x <= 10) [L11] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L21] RET assume_abort_if_not(x >= -10 && x <= 10) [L23] y = x*x - 2.f [L24] CALL __VERIFIER_assert(y != 0.f) [L13] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L13] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 10 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-02-20 16:24:10,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -ea -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/float-benchs/inv_square_int.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 9d6111f1172e07b7206075be423d21f33b529e79943d78b2db976fd996371e2d --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-20 16:24:12,010 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-20 16:24:12,011 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-20 16:24:12,056 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-20 16:24:12,056 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-20 16:24:12,057 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-20 16:24:12,058 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-20 16:24:12,060 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-20 16:24:12,061 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-20 16:24:12,062 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-20 16:24:12,063 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-20 16:24:12,064 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-20 16:24:12,065 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-20 16:24:12,065 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-20 16:24:12,066 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-20 16:24:12,067 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-20 16:24:12,068 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-20 16:24:12,069 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-20 16:24:12,070 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-20 16:24:12,071 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-20 16:24:12,073 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-20 16:24:12,074 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-20 16:24:12,075 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-20 16:24:12,075 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-20 16:24:12,077 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-20 16:24:12,078 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-20 16:24:12,078 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-20 16:24:12,079 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-20 16:24:12,079 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-20 16:24:12,080 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-20 16:24:12,080 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-20 16:24:12,081 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-20 16:24:12,081 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-20 16:24:12,082 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-20 16:24:12,083 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-20 16:24:12,083 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-20 16:24:12,084 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-20 16:24:12,084 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-20 16:24:12,084 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-20 16:24:12,085 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-20 16:24:12,086 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-20 16:24:12,086 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-02-20 16:24:12,107 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-20 16:24:12,110 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-20 16:24:12,111 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-20 16:24:12,112 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-20 16:24:12,112 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-20 16:24:12,114 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-20 16:24:12,115 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-20 16:24:12,115 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-20 16:24:12,116 INFO L138 SettingsManager]: * Use SBE=true [2022-02-20 16:24:12,116 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-20 16:24:12,117 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-20 16:24:12,117 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-20 16:24:12,117 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-20 16:24:12,117 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-20 16:24:12,117 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-20 16:24:12,117 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-20 16:24:12,118 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-02-20 16:24:12,118 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-02-20 16:24:12,118 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-02-20 16:24:12,118 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-20 16:24:12,118 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-20 16:24:12,118 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-20 16:24:12,119 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-20 16:24:12,119 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-20 16:24:12,119 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-20 16:24:12,119 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-20 16:24:12,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 16:24:12,120 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-20 16:24:12,120 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-20 16:24:12,120 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-20 16:24:12,120 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-02-20 16:24:12,120 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-02-20 16:24:12,121 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-20 16:24:12,121 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-02-20 16:24:12,121 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-20 16:24:12,121 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-02-20 16:24:12,121 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d6111f1172e07b7206075be423d21f33b529e79943d78b2db976fd996371e2d [2022-02-20 16:24:12,430 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-20 16:24:12,446 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-20 16:24:12,448 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-20 16:24:12,449 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-20 16:24:12,450 INFO L275 PluginConnector]: CDTParser initialized [2022-02-20 16:24:12,451 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/inv_square_int.c [2022-02-20 16:24:12,515 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77152727f/73757e7ede56420caa2c2de14d98c12e/FLAG79a180fe5 [2022-02-20 16:24:12,925 INFO L306 CDTParser]: Found 1 translation units. [2022-02-20 16:24:12,926 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_square_int.c [2022-02-20 16:24:12,931 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77152727f/73757e7ede56420caa2c2de14d98c12e/FLAG79a180fe5 [2022-02-20 16:24:13,333 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77152727f/73757e7ede56420caa2c2de14d98c12e [2022-02-20 16:24:13,336 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-20 16:24:13,337 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-20 16:24:13,340 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-20 16:24:13,340 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-20 16:24:13,345 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-20 16:24:13,347 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 04:24:13" (1/1) ... [2022-02-20 16:24:13,348 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@456e95ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:24:13, skipping insertion in model container [2022-02-20 16:24:13,348 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 04:24:13" (1/1) ... [2022-02-20 16:24:13,356 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-20 16:24:13,364 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-20 16:24:13,467 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_square_int.c[482,495] [2022-02-20 16:24:13,478 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 16:24:13,498 INFO L203 MainTranslator]: Completed pre-run [2022-02-20 16:24:13,508 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_square_int.c[482,495] [2022-02-20 16:24:13,510 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 16:24:13,528 INFO L208 MainTranslator]: Completed translation [2022-02-20 16:24:13,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:24:13 WrapperNode [2022-02-20 16:24:13,530 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-20 16:24:13,532 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-20 16:24:13,532 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-20 16:24:13,532 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-20 16:24:13,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:24:13" (1/1) ... [2022-02-20 16:24:13,545 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:24:13" (1/1) ... [2022-02-20 16:24:13,576 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 31 [2022-02-20 16:24:13,577 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-20 16:24:13,578 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-20 16:24:13,578 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-20 16:24:13,578 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-20 16:24:13,584 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:24:13" (1/1) ... [2022-02-20 16:24:13,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:24:13" (1/1) ... [2022-02-20 16:24:13,598 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:24:13" (1/1) ... [2022-02-20 16:24:13,599 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:24:13" (1/1) ... [2022-02-20 16:24:13,604 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:24:13" (1/1) ... [2022-02-20 16:24:13,609 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:24:13" (1/1) ... [2022-02-20 16:24:13,615 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:24:13" (1/1) ... [2022-02-20 16:24:13,617 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-20 16:24:13,620 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-20 16:24:13,620 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-20 16:24:13,620 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-20 16:24:13,621 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:24:13" (1/1) ... [2022-02-20 16:24:13,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 16:24:13,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 16:24:13,648 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-20 16:24:13,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-20 16:24:13,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-20 16:24:13,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-02-20 16:24:13,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-20 16:24:13,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-20 16:24:13,753 INFO L234 CfgBuilder]: Building ICFG [2022-02-20 16:24:13,755 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-20 16:24:14,260 INFO L275 CfgBuilder]: Performing block encoding [2022-02-20 16:24:14,265 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-20 16:24:14,266 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-20 16:24:14,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 04:24:14 BoogieIcfgContainer [2022-02-20 16:24:14,267 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-20 16:24:14,269 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-20 16:24:14,269 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-20 16:24:14,271 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-20 16:24:14,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 04:24:13" (1/3) ... [2022-02-20 16:24:14,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c7576fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 04:24:14, skipping insertion in model container [2022-02-20 16:24:14,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:24:13" (2/3) ... [2022-02-20 16:24:14,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c7576fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 04:24:14, skipping insertion in model container [2022-02-20 16:24:14,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 04:24:14" (3/3) ... [2022-02-20 16:24:14,274 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_square_int.c [2022-02-20 16:24:14,278 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-20 16:24:14,278 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-20 16:24:14,314 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-20 16:24:14,322 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-20 16:24:14,322 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-20 16:24:14,337 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:24:14,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-02-20 16:24:14,340 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 16:24:14,341 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-02-20 16:24:14,341 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 16:24:14,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 16:24:14,351 INFO L85 PathProgramCache]: Analyzing trace with hash 889508713, now seen corresponding path program 1 times [2022-02-20 16:24:14,361 INFO L126 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-02-20 16:24:14,361 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1527683603] [2022-02-20 16:24:14,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 16:24:14,362 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-02-20 16:24:14,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-02-20 16:24:14,372 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-02-20 16:24:14,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-02-20 16:24:14,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 16:24:14,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 1 conjunts are in the unsatisfiable core [2022-02-20 16:24:14,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 16:24:14,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-20 16:24:14,522 INFO L290 TraceCheckUtils]: 0: Hoare triple {14#true} assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0bv32, 0bv32;assume 0bv1 == #valid[0bv32];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven;call #Ultimate.allocInit(2bv32, 1bv32);call write~init~intINTTYPE1(48bv8, 1bv32, 0bv32, 1bv32);call write~init~intINTTYPE1(0bv8, 1bv32, 1bv32, 1bv32);call #Ultimate.allocInit(17bv32, 2bv32);call #Ultimate.allocInit(12bv32, 3bv32); {14#true} is VALID [2022-02-20 16:24:14,523 INFO L290 TraceCheckUtils]: 1: Hoare triple {14#true} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~z~0#1;main_~x~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;assume { :begin_inline_assume_abort_if_not } true;assume_abort_if_not_#in~cond#1 := (if ~bvsge32(main_~x~0#1, 4294967286bv32) && ~bvsle32(main_~x~0#1, 10bv32) then 1bv32 else 0bv32);havoc assume_abort_if_not_~cond#1;assume_abort_if_not_~cond#1 := assume_abort_if_not_#in~cond#1; {14#true} is VALID [2022-02-20 16:24:14,524 INFO L290 TraceCheckUtils]: 2: Hoare triple {14#true} assume 0bv32 == assume_abort_if_not_~cond#1;assume false; {15#false} is VALID [2022-02-20 16:24:14,524 INFO L290 TraceCheckUtils]: 3: Hoare triple {15#false} assume { :end_inline_assume_abort_if_not } true;main_~y~0#1 := ~fp.sub~FLOAT(currentRoundingMode, ~convertINTToFLOAT(currentRoundingMode, ~bvmul32(main_~x~0#1, main_~x~0#1)), ~to_fp~FLOAT(currentRoundingMode, 2.0));assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if !~fp.eq~FLOAT(main_~y~0#1, ~Pluszero~FLOAT()) then 1bv32 else 0bv32);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; {15#false} is VALID [2022-02-20 16:24:14,525 INFO L290 TraceCheckUtils]: 4: Hoare triple {15#false} assume 0bv32 == __VERIFIER_assert_~cond#1; {15#false} is VALID [2022-02-20 16:24:14,525 INFO L290 TraceCheckUtils]: 5: Hoare triple {15#false} assume !false; {15#false} is VALID [2022-02-20 16:24:14,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 16:24:14,526 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-20 16:24:14,527 INFO L144 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-02-20 16:24:14,527 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1527683603] [2022-02-20 16:24:14,527 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1527683603] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-20 16:24:14,528 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-20 16:24:14,528 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-20 16:24:14,529 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975225085] [2022-02-20 16:24:14,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-20 16:24:14,533 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-02-20 16:24:14,534 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-02-20 16:24:14,536 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:24:14,590 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 6 edges. 6 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 16:24:14,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-02-20 16:24:14,591 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-02-20 16:24:14,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-02-20 16:24:14,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-20 16:24:14,631 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 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) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:24:15,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 16:24:15,161 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-02-20 16:24:15,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-20 16:24:15,162 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-02-20 16:24:15,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-20 16:24:15,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:24:15,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 20 transitions. [2022-02-20 16:24:15,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:24:15,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 20 transitions. [2022-02-20 16:24:15,168 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 20 transitions. [2022-02-20 16:24:15,475 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 16:24:15,481 INFO L225 Difference]: With dead ends: 19 [2022-02-20 16:24:15,483 INFO L226 Difference]: Without dead ends: 7 [2022-02-20 16:24:15,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-20 16:24:15,494 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-20 16:24:15,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-20 16:24:15,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2022-02-20 16:24:15,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2022-02-20 16:24:15,521 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-20 16:24:15,522 INFO L82 GeneralOperation]: Start isEquivalent. First operand 7 states. Second operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:24:15,523 INFO L74 IsIncluded]: Start isIncluded. First operand 7 states. Second operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:24:15,524 INFO L87 Difference]: Start difference. First operand 7 states. Second operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:24:15,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 16:24:15,528 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2022-02-20 16:24:15,529 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2022-02-20 16:24:15,529 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 16:24:15,529 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 16:24:15,530 INFO L74 IsIncluded]: Start isIncluded. First operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 7 states. [2022-02-20 16:24:15,532 INFO L87 Difference]: Start difference. First operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 7 states. [2022-02-20 16:24:15,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 16:24:15,534 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2022-02-20 16:24:15,534 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2022-02-20 16:24:15,534 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 16:24:15,534 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 16:24:15,535 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-20 16:24:15,535 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-20 16:24:15,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:24:15,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2022-02-20 16:24:15,540 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2022-02-20 16:24:15,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-20 16:24:15,541 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2022-02-20 16:24:15,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:24:15,542 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2022-02-20 16:24:15,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-02-20 16:24:15,546 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 16:24:15,547 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-02-20 16:24:15,561 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-02-20 16:24:15,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-02-20 16:24:15,759 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 16:24:15,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 16:24:15,760 INFO L85 PathProgramCache]: Analyzing trace with hash 889568295, now seen corresponding path program 1 times [2022-02-20 16:24:15,760 INFO L126 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-02-20 16:24:15,761 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1160401535] [2022-02-20 16:24:15,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 16:24:15,761 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-02-20 16:24:15,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-02-20 16:24:15,763 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-02-20 16:24:15,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-02-20 16:24:15,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 16:24:15,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-20 16:24:17,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 16:24:17,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-20 16:24:21,897 INFO L290 TraceCheckUtils]: 0: Hoare triple {77#true} assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0bv32, 0bv32;assume 0bv1 == #valid[0bv32];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven;call #Ultimate.allocInit(2bv32, 1bv32);call write~init~intINTTYPE1(48bv8, 1bv32, 0bv32, 1bv32);call write~init~intINTTYPE1(0bv8, 1bv32, 1bv32, 1bv32);call #Ultimate.allocInit(17bv32, 2bv32);call #Ultimate.allocInit(12bv32, 3bv32); {82#(= currentRoundingMode roundNearestTiesToEven)} is VALID [2022-02-20 16:24:21,898 INFO L290 TraceCheckUtils]: 1: Hoare triple {82#(= currentRoundingMode roundNearestTiesToEven)} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~z~0#1;main_~x~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;assume { :begin_inline_assume_abort_if_not } true;assume_abort_if_not_#in~cond#1 := (if ~bvsge32(main_~x~0#1, 4294967286bv32) && ~bvsle32(main_~x~0#1, 10bv32) then 1bv32 else 0bv32);havoc assume_abort_if_not_~cond#1;assume_abort_if_not_~cond#1 := assume_abort_if_not_#in~cond#1; {82#(= currentRoundingMode roundNearestTiesToEven)} is VALID [2022-02-20 16:24:21,899 INFO L290 TraceCheckUtils]: 2: Hoare triple {82#(= currentRoundingMode roundNearestTiesToEven)} assume !(0bv32 == assume_abort_if_not_~cond#1); {82#(= currentRoundingMode roundNearestTiesToEven)} is VALID [2022-02-20 16:24:23,912 WARN L290 TraceCheckUtils]: 3: Hoare triple {82#(= currentRoundingMode roundNearestTiesToEven)} assume { :end_inline_assume_abort_if_not } true;main_~y~0#1 := ~fp.sub~FLOAT(currentRoundingMode, ~convertINTToFLOAT(currentRoundingMode, ~bvmul32(main_~x~0#1, main_~x~0#1)), ~to_fp~FLOAT(currentRoundingMode, 2.0));assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if !~fp.eq~FLOAT(main_~y~0#1, ~Pluszero~FLOAT()) then 1bv32 else 0bv32);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; {92#(= |ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32))} is UNKNOWN [2022-02-20 16:24:23,913 INFO L290 TraceCheckUtils]: 4: Hoare triple {92#(= |ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32))} assume 0bv32 == __VERIFIER_assert_~cond#1; {78#false} is VALID [2022-02-20 16:24:23,913 INFO L290 TraceCheckUtils]: 5: Hoare triple {78#false} assume !false; {78#false} is VALID [2022-02-20 16:24:23,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 16:24:23,914 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-20 16:24:23,914 INFO L144 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-02-20 16:24:23,914 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1160401535] [2022-02-20 16:24:23,914 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1160401535] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-20 16:24:23,914 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-20 16:24:23,914 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-20 16:24:23,920 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351897302] [2022-02-20 16:24:23,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-20 16:24:23,922 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-02-20 16:24:23,922 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-02-20 16:24:23,922 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:24:25,575 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 6 edges. 6 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 16:24:25,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-20 16:24:25,575 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-02-20 16:24:25,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-20 16:24:25,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-20 16:24:25,576 INFO L87 Difference]: Start difference. First operand 7 states and 6 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:24:26,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 16:24:26,430 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2022-02-20 16:24:26,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-20 16:24:26,430 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-02-20 16:24:26,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-20 16:24:26,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:24:26,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2022-02-20 16:24:26,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:24:26,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2022-02-20 16:24:26,432 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 6 transitions. [2022-02-20 16:24:27,632 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 6 edges. 6 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 16:24:27,632 INFO L225 Difference]: With dead ends: 7 [2022-02-20 16:24:27,632 INFO L226 Difference]: Without dead ends: 0 [2022-02-20 16:24:27,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-20 16:24:27,634 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 1 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-20 16:24:27,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 6 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-20 16:24:27,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-20 16:24:27,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-20 16:24:27,635 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-20 16:24:27,636 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:24:27,636 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:24:27,636 INFO L87 Difference]: Start difference. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:24:27,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 16:24:27,636 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-02-20 16:24:27,636 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-20 16:24:27,636 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 16:24:27,636 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 16:24:27,636 INFO L74 IsIncluded]: Start isIncluded. First 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) Second operand 0 states. [2022-02-20 16:24:27,637 INFO L87 Difference]: Start difference. First 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) Second operand 0 states. [2022-02-20 16:24:27,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 16:24:27,637 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-02-20 16:24:27,637 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-20 16:24:27,637 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 16:24:27,637 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 16:24:27,637 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-20 16:24:27,637 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-20 16:24:27,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:24:27,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-20 16:24:27,639 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2022-02-20 16:24:27,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-20 16:24:27,639 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-20 16:24:27,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:24:27,640 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-20 16:24:27,640 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 16:24:27,642 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-20 16:24:27,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-02-20 16:24:27,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-02-20 16:24:27,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-02-20 16:24:27,851 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-02-20 16:24:27,851 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-02-20 16:24:27,851 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-02-20 16:24:27,851 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-02-20 16:24:27,852 INFO L861 garLoopResultBuilder]: At program point L26(lines 15 27) the Hoare annotation is: true [2022-02-20 16:24:27,852 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2022-02-20 16:24:27,852 INFO L858 garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed. [2022-02-20 16:24:27,852 INFO L858 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2022-02-20 16:24:27,853 INFO L858 garLoopResultBuilder]: For program point L11(line 11) no Hoare annotation was computed. [2022-02-20 16:24:27,853 INFO L858 garLoopResultBuilder]: For program point L10(lines 10 12) no Hoare annotation was computed. [2022-02-20 16:24:27,853 INFO L861 garLoopResultBuilder]: At program point L13-3(line 13) the Hoare annotation is: true [2022-02-20 16:24:27,856 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-20 16:24:27,857 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-20 16:24:27,860 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2022-02-20 16:24:27,861 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2022-02-20 16:24:27,861 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2022-02-20 16:24:27,861 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2022-02-20 16:24:27,861 WARN L170 areAnnotationChecker]: L10 has no Hoare annotation [2022-02-20 16:24:27,861 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2022-02-20 16:24:27,861 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2022-02-20 16:24:27,862 WARN L170 areAnnotationChecker]: L13-1 has no Hoare annotation [2022-02-20 16:24:27,862 WARN L170 areAnnotationChecker]: L13-1 has no Hoare annotation [2022-02-20 16:24:27,862 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2022-02-20 16:24:27,862 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2022-02-20 16:24:27,862 INFO L163 areAnnotationChecker]: CFG has 1 edges. 1 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-02-20 16:24:27,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.02 04:24:27 BoogieIcfgContainer [2022-02-20 16:24:27,865 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-20 16:24:27,866 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-02-20 16:24:27,866 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-02-20 16:24:27,867 INFO L275 PluginConnector]: Witness Printer initialized [2022-02-20 16:24:27,867 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 04:24:14" (3/4) ... [2022-02-20 16:24:27,870 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-02-20 16:24:27,878 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-02-20 16:24:27,878 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-02-20 16:24:27,878 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-02-20 16:24:27,878 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-02-20 16:24:27,914 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-02-20 16:24:27,914 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-02-20 16:24:27,915 INFO L158 Benchmark]: Toolchain (without parser) took 14577.92ms. Allocated memory was 60.8MB in the beginning and 83.9MB in the end (delta: 23.1MB). Free memory was 41.6MB in the beginning and 56.5MB in the end (delta: -14.9MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. [2022-02-20 16:24:27,916 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 60.8MB. Free memory was 43.0MB in the beginning and 42.9MB in the end (delta: 49.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 16:24:27,916 INFO L158 Benchmark]: CACSL2BoogieTranslator took 191.21ms. Allocated memory is still 60.8MB. Free memory was 41.5MB in the beginning and 44.7MB in the end (delta: -3.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-02-20 16:24:27,920 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.28ms. Allocated memory is still 60.8MB. Free memory was 44.7MB in the beginning and 43.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-20 16:24:27,920 INFO L158 Benchmark]: Boogie Preprocessor took 40.61ms. Allocated memory is still 60.8MB. Free memory was 43.1MB in the beginning and 42.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 16:24:27,920 INFO L158 Benchmark]: RCFGBuilder took 647.38ms. Allocated memory is still 60.8MB. Free memory was 41.8MB in the beginning and 33.1MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-02-20 16:24:27,921 INFO L158 Benchmark]: TraceAbstraction took 13596.66ms. Allocated memory was 60.8MB in the beginning and 83.9MB in the end (delta: 23.1MB). Free memory was 32.6MB in the beginning and 59.1MB in the end (delta: -26.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 16:24:27,921 INFO L158 Benchmark]: Witness Printer took 48.02ms. Allocated memory is still 83.9MB. Free memory was 59.1MB in the beginning and 56.5MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-20 16:24:27,923 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 60.8MB. Free memory was 43.0MB in the beginning and 42.9MB in the end (delta: 49.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 191.21ms. Allocated memory is still 60.8MB. Free memory was 41.5MB in the beginning and 44.7MB in the end (delta: -3.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.28ms. Allocated memory is still 60.8MB. Free memory was 44.7MB in the beginning and 43.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.61ms. Allocated memory is still 60.8MB. Free memory was 43.1MB in the beginning and 42.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 647.38ms. Allocated memory is still 60.8MB. Free memory was 41.8MB in the beginning and 33.1MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 13596.66ms. Allocated memory was 60.8MB in the beginning and 83.9MB in the end (delta: 23.1MB). Free memory was 32.6MB in the beginning and 59.1MB in the end (delta: -26.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 48.02ms. Allocated memory is still 83.9MB. Free memory was 59.1MB in the beginning and 56.5MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: 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, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 13.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1 mSDsluCounter, 16 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1 IncrementalHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 13 mSDtfsCounter, 1 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 2 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 8.1s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 18 SizeOfPredicates, 4 NumberOfNonLiveVariables, 46 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-02-20 16:24:27,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE